Modern metal-forming operations require more than high nominal capacity. A production press must combine structural rigidity, repeatable motion, practical die access, reliable overload protection, operator safety, and efficient control. The BLPC-250 Robust Heavy-Duty Open-Type Double-Point Power Press is designed around these requirements. With a nominal capacity of 2,500 kN, a press weight of approximately 44 tons, a large 2,700 x 900 mm worktable, and a maximum die height of 605 mm in its horizontal configuration, it is intended for demanding industrial forming applications where stability and working space are essential.
The machine is part of a heavy-duty open-type double-point press platform developed for industrial stamping, forming, blanking, drawing, bending, and related operations. Its double-point slide drive helps distribute working loads across the slide, reducing the tendency toward twisting that can occur when a large die is loaded unevenly. The open-front construction provides useful access for loading, unloading, die installation, inspection, and integration with automated transfer systems.
Rather than focusing on capacity alone, this article examines how the BLPC-250 combines frame design, double-point transmission, precision adjustment, production flexibility, safety equipment, controls, and manufacturing quality. It also explains the practical advantages that distinguish a high-capacity open-type press from a conventional single-point or less rigid alternative.
The BLPC-250 is engineered for high-force stamping lines that require a broad work area and a substantial die envelope. Its 2,500 kN nominal capacity places it in a class suitable for large automotive components, structural hardware, appliance parts, industrial panels, chassis-related components, and other formed products requiring considerable pressing force.
The machine uses an open-type frame arrangement. This configuration leaves the working area accessible from the front and allows the press to accommodate large workpieces and dies without the enclosed restrictions associated with many straight-side or closed-frame machines. At the same time, the frame is built as a high-rigidity structure weighing approximately 44 tons. The heavy mass helps resist vibration and deflection during high-load operation.
Its double-point design uses two connected points of force application on the slide. This is especially valuable when the die is wide or when the forming load is distributed over a large area. A two-point drive can improve slide balance, support more consistent die alignment, and reduce the risk of angular movement caused by off-center loading. These characteristics make the press appropriate for large dies and multi-operation tooling.
The BLPC-250 is available in vertical and horizontal configuration data within the supplied technical range. For the horizontal version, the listed maximum die height is 605 mm, with a 2,700 x 900 mm worktable and a 2,300 x 700 mm slide bottom. These dimensions give production engineers a generous working envelope for large progressive, compound, transfer, and forming dies.
The following table summarizes the main specifications associated with the BLPC-250 configuration. Values are presented according to the supplied product information. The machine configuration, electrical standards, guarding arrangement, and optional equipment should be confirmed during the quotation and technical review process.
| Specification | BLPC-250 Vertical Configuration | BLPC-250 Horizontal Configuration |
|---|---|---|
| Nominal capacity | 2,500 kN | 2,500 kN |
| Nominal pressure stroke | 7 mm | 3.5 mm |
| Slide stroke | 280 mm | 170 mm |
| Slide strokes per minute | 20–35 S.P.M. | 30–60 S.P.M. |
| Maximum die height | 550 mm | 605 mm |
| Die height adjustment | 120 mm | 120 mm |
| Throat depth | 455 mm | 455 mm |
| Worktable size | 2,700 x 900 x 170 mm | 2,700 x 900 x 170 mm |
| Slide bottom size | 2,300 x 700 x 95 mm | 2,300 x 700 x 95 mm |
| Working face height | 1,100 mm | 1,100 mm |
| Distance between columns | 2,239 mm | 2,239 mm |
| Main motor | 22 kW x 4, four-pole configuration | 22 kW x 4, four-pole configuration |
| Die height adjustment motor | 1.5 kW | 1.5 kW |
| Air pressure | 0.55 MPa | 0.55 MPa |
| Overall dimensions | Approximately 2,545 x 3,000 x 4,304 mm | Approximately 2,545 x 3,000 x 4,304 mm |
| Press weight | Approximately 44 tons | Approximately 44 tons |
| Mold pad capacity | 140 kN x 2 | 140 kN x 2 |
| Ram stroke | 100 mm | 100 mm |
| Effective cushion area | 640 x 470 mm x 2 groups | 640 x 470 mm x 2 groups |
The listed specifications show the machine’s balance between capacity, working space, and controllable speed. The horizontal configuration offers a maximum die height of 605 mm and a slide stroke of 170 mm, while the vertical configuration provides a longer 280 mm slide stroke. This allows the product family to address different tooling requirements within the same general press platform.
A press frame must withstand repeated compressive and dynamic loads without excessive deflection. If the frame flexes significantly, the die may experience uneven contact, accelerated wear, dimensional variation, or localized damage. Frame stiffness is therefore directly related to product quality, die life, and long-term maintenance cost.
The BLPC-250 uses a massive high-rigidity structure with an approximate machine weight of 44 tons. This mass is not simply a measure of size. It contributes to the press’s ability to absorb operating forces and resist vibration. A heavier and properly reinforced structure can provide a more stable base for large tooling, particularly during blanking, piercing, forming, and operations involving abrupt load changes.
The open-type construction is designed to balance accessibility with structural performance. Open presses are valued for convenient front access, but a large opening can create challenges for rigidity if the frame is not properly designed. The BLPC-250 addresses this requirement through a heavy industrial structure intended for high-load service. Its design supports wide dies while maintaining the practical advantages of an open work area.
For production managers, structural stability can influence several operating results. It can help maintain more consistent bottom dead center behavior, reduce vibration transmitted to the floor, improve tooling alignment, and support dependable operation over extended production cycles. These benefits are particularly important when a press is used for expensive dies or when parts must meet close dimensional requirements.
The double-point arrangement is one of the most important characteristics of the BLPC-250. A single-point press applies the slide drive through one central area. This is effective for many applications, but large or asymmetrical dies may produce unequal loading across the slide. Unequal loading can create slide tilting, die wear, and inconsistent clearance.
A double-point power press applies the driving force at two separated points. The distance between the points supports more balanced movement across the width of the slide. When the die is large, the two-point arrangement can help maintain parallel motion and reduce the effects of off-center loading. It is especially suitable for wide panels, multi-station tools, and dies with multiple forming zones.
The BLPC-250 provides a slide bottom measuring approximately 2,300 x 700 mm. This large surface enables the installation of substantial tooling and supports a broad range of die layouts. The 2,700 x 900 mm worktable provides additional space for die bases, guide systems, material handling arrangements, and auxiliary components.
Balanced slide movement also benefits die maintenance. When the slide remains more stable during repeated cycling, guide posts, bushings, inserts, and cutting edges can experience more uniform loading. This may reduce premature wear and make it easier for maintenance teams to identify genuine tooling issues rather than compensate for press-related movement.
Compared with a basic single-point press of similar nominal capacity, the BLPC-250’s double-point architecture offers a practical advantage for wide and heavy dies. It is not merely a higher-force replacement; it is a platform designed for tooling where load distribution and slide balance are central production concerns.
BLPC-250 Robust Heavy-Duty Open-Type Double-Point Power Press
Tooling dimensions often determine whether a press can be used for a particular production program. A machine with adequate tonnage but insufficient die height, throat depth, or table area may not be suitable for the intended application. The BLPC-250 is designed to provide a generous die envelope for large industrial tools.
The horizontal configuration offers a maximum die height of 605 mm and a 120 mm die height adjustment range. This allows production teams to accommodate dies with different shut heights while maintaining an appropriate operating position. The die height adjustment system can help simplify setup changes and support more accurate matching between the press and the installed tool.
The throat depth is listed at 455 mm. This dimension gives the die designer useful space from the front of the press toward the working line. A larger throat can be valuable when forming deeper components or when the tool includes additional stations, material guides, sensors, or transfer mechanisms.
The table size of 2,700 x 900 mm is suited to large dies used for automotive, appliance, construction, and industrial hardware components. The table thickness of 170 mm contributes to support and stability. The slide bottom size of 2,300 x 700 x 95 mm provides a broad mounting surface while preserving the working clearance required by many tooling designs.
Because tooling costs can be substantial, a press should be selected with future production flexibility in mind. The BLPC-250’s working envelope gives manufacturers the opportunity to use multiple die formats rather than limiting the machine to a narrow set of small tools. This can improve equipment utilization and help consolidate several forming operations within a larger production cell.
The BLPC-250 delivers a nominal capacity of 2,500 kN. This level of force is intended for substantial forming and cutting operations. The actual capacity required for a specific part depends on material type, thickness, tensile strength, blank shape, die design, forming method, and the location of the load within the permitted operating range.
Nominal press capacity should not be interpreted as a recommendation to operate continuously at maximum force for every stroke. Good production planning considers the tonnage curve, pressure stroke, die design, eccentric loading, cycle rate, and the dynamic characteristics of the operation. Properly matched tooling allows the press to use its force efficiently while reducing unnecessary mechanical stress.
The supplied specification lists nominal pressure strokes of 7 mm for the vertical configuration and 3.5 mm for the horizontal configuration. These values indicate the region of the stroke where the rated pressing force is available. Understanding this relationship helps die designers determine whether a proposed blanking or forming operation is compatible with the machine.
The horizontal configuration provides a slide stroke of 170 mm and a speed range of 30 to 60 strokes per minute. The vertical configuration provides a 280 mm slide stroke and a speed range of 20 to 35 strokes per minute. These ranges enable the press to serve different process requirements, from relatively fast repetitive stamping to operations requiring longer forming travel.
Speed control is particularly important when processing materials that require carefully managed forming rates. Inverter-based control allows operators and engineers to adjust the motor and machine operating speed to suit the tooling, material, lubrication, and production target. A slower setting may be selected for demanding forming work, while a higher setting can support productivity in simpler cutting or shallow-forming operations.
The main drive is listed as a 22 kW x 4, four-pole configuration for the BLPC-250. An inverter-based drive provides practical control over operating speed and can support smoother adaptation to different production conditions. Instead of treating every job as identical, the operator can select a speed that corresponds to the die design and material behavior.
Variable-speed operation can improve process control in several ways. It may reduce impact during setup, allow a controlled trial run, help manage heat and lubrication conditions, and support a more appropriate cycle rate for different materials. The ability to adjust speed is also helpful when a single machine is used for several product families with different forming requirements.
Inverter control can contribute to energy management by avoiding unnecessary operation at a higher speed than the process requires. Actual energy performance depends on load, cycle rate, motor efficiency, control settings, auxiliary equipment, and production conditions. Nevertheless, adjustable drive behavior gives the production team more control over how the press consumes power during different phases of operation.
The main drive must work in coordination with the clutch, brake, slide motion, lubrication system, control circuit, and safety devices. A well-integrated system helps prevent abrupt or uncontrolled motion and provides operators with a more predictable machine response during setup and production.
The BLPC-250 incorporates a touch screen interface for machine operation and parameter management. A modern interface can make a large mechanical press easier to configure and monitor, especially when multiple operating modes, speed settings, die adjustments, and safety conditions must be coordinated.
Touch screen control provides a centralized view of important machine functions. Depending on the final control configuration, operators may use the interface to select operating modes, monitor status information, adjust speed-related parameters, review alarms, and confirm that safety circuits are ready before production begins.
A clear interface is also valuable during setup. Die changes and trial strokes require careful verification of slide position, die height, material placement, and guarding. Displayed status information can help operators identify whether a condition is caused by a machine setting, a safety circuit, an overload event, or an external automation signal.
For maintenance personnel, diagnostic messages can reduce troubleshooting time. Instead of relying only on mechanical inspection, technicians can use the control system to narrow the source of a stoppage. This does not replace proper electrical and mechanical diagnosis, but it can improve the efficiency of service procedures.
When implementing the press in a factory, the control interface should be integrated with the plant’s training system. Operators should understand the meaning of each mode, the correct response to alarms, the limits of speed adjustment, and the required lockout and maintenance procedures. Good interface design is most effective when supported by disciplined operating practices.
Overload protection is essential for a high-capacity press. Unexpected material thickness, incorrect die settings, foreign objects, misfed stock, or a tooling malfunction can create a force higher than the die or press should sustain. Without a suitable protection system, an overload may damage the die, connecting components, slide, frame, or drive mechanism.
The BLPC-250 includes integrated hydraulic overload protection. This system is intended to respond when the working load exceeds the permitted level, helping protect the press and tooling from severe overload conditions. The exact response time, reset procedure, pressure setting, and integration with the control system should be verified in the machine documentation and commissioning process.
Hydraulic overload protection offers an advantage over relying solely on mechanical strength. A press frame can be extremely robust, but deliberately allowing overloads to pass through the machine is not an appropriate production strategy. A protection system adds a controlled layer of defense and can reduce the consequences of abnormal operating conditions.
Overload protection is especially important in automated lines. A material feed error may occur quickly and may not be visible to the operator before the next stroke. Automatic protection can interrupt or limit the event, protecting high-value tooling and reducing unplanned downtime.
Operators should still follow proper setup practices. Overload protection is not a substitute for correct die design, accurate feed adjustment, suitable material control, regular inspection, and safe operating procedures. It is one part of a broader risk-reduction strategy.
The press is equipped with highly sensitive photo-electronic safety devices. These devices are designed to detect an interruption in the protected area and prevent or stop hazardous operation according to the configured safety logic. For an open-type press, effective guarding and presence detection are particularly important because the working area is accessible from the front.
Photo-electronic protection can improve operator safety during production, setup, and material handling. It is often used in combination with fixed guards, interlocked access points, emergency stop devices, two-hand controls, and other protective systems. The final arrangement should reflect the machine’s risk assessment and the applicable safety requirements in the destination market.
Safety devices must be correctly positioned, tested, and maintained. Optical components should remain clean and aligned. Operators should never bypass, cover, reposition, or defeat a safety device. Maintenance teams should verify the response of the safety circuit at scheduled intervals and after any change to the tooling, guarding, electrical system, or automation layout.
The photo-electronic system also supports more efficient production when properly integrated. Operators can load material and monitor the process with greater confidence, while the machine control system can coordinate protective signals with the press cycle. Safety, however, must remain the priority over speed or convenience.
The BLPC-250 is listed with a mold pad capacity of 140 kN x 2, a ram stroke of 100 mm, and an effective cushion area of 640 x 470 mm x 2 groups. These specifications indicate support for operations where controlled force beneath or within the die is required.
A cushion system can be used in drawing, forming, reverse forming, and other applications where material flow must be controlled. By applying an upward or counteracting force, the cushion can help regulate blank movement and improve the consistency of formed parts. It can also support better control of wrinkles, tearing, and surface deformation when the die and process are correctly designed.
The two-group effective cushion arrangement can be useful for dies requiring distributed support. The exact application depends on the tooling design, pressure requirements, material characteristics, and the selected forming sequence. Before production, the cushion capacity and available stroke should be compared with the die manufacturer’s requirements.
Integrated cushion capability increases the range of parts that can be produced on the press. A machine limited to simple cutting may require additional equipment for deeper forming work. By contrast, a press with suitable cushion provisions can support more advanced forming operations and may reduce the need for separate specialized machinery.
As with the main press mechanism, cushion components require regular inspection. Hydraulic pressure, seals, connections, alignment, and control signals should be reviewed according to the maintenance schedule. Any unusual noise, pressure fluctuation, leakage, or change in forming quality should be investigated promptly.
The BLPC-250 is manufactured by Zhejiang Bolun High-Precision Machinery Co., Ltd., a machinery producer based in Zhejiang Province, China. The company’s stated capabilities cover research and development, design, production, sales, and service. This integrated structure is important for a heavy industrial machine because press performance depends on the coordination of mechanical design, fabrication, machining, electrical control, assembly, inspection, and customer support.
The company describes its development as being built on approximately two decades of experience in machinery manufacturing. Its product focus includes forging and forming machinery, with an emphasis on precision, customization, and industrial application requirements. A manufacturer with experience across these areas can bring practical knowledge to decisions involving frame construction, transmission design, tooling compatibility, safety integration, and production commissioning.
One of the company’s stated strengths is a full-chain production system. This means that key stages, from basic design and component development to final assembly, are managed within an organized manufacturing structure. For customers, this can make technical communication more direct and may simplify the process of coordinating modifications or special requirements.
The producer also emphasizes non-standard customization capabilities. Industrial stamping applications often differ significantly from standard catalog requirements. Customers may need changes to table dimensions, working height, automation interfaces, electrical standards, die adjustment systems, safety guarding, cushion arrangements, or control functions. A manufacturer capable of engineering these variations can provide a more suitable machine than a rigidly standardized product.
Advanced processing equipment and a mature industrial environment support the production of large press components. Heavy frames, tables, slides, shafts, and drive parts require appropriate fabrication, machining, alignment, and inspection procedures. The quality of these processes directly affects the final press’s rigidity, accuracy, operating noise, vibration behavior, and service life.
The manufacturing process for a large power press begins with engineering review. Designers analyze the required capacity, load distribution, stroke, die envelope, drive arrangement, safety functions, and customer operating conditions. For a double-point machine, special attention is given to the relationship between the two drive points, slide balance, connecting components, and the rigidity of the frame.
Frame fabrication requires careful preparation of plates, structural members, welded sections, and stress management. Large welded structures can develop internal stress if welding sequences and thermal control are not properly managed. A disciplined fabrication process can help reduce distortion before machining and assembly.
After fabrication, critical surfaces are machined to establish the required reference relationships. The worktable, slide mounting surfaces, guide areas, bearing locations, and other precision interfaces must be processed with suitable equipment. Large components require machines capable of maintaining accuracy over substantial dimensions.
Precision machining is not limited to achieving a nominal dimension. Parallelism, flatness, perpendicularity, concentricity, and alignment all influence press performance. A table that is flat but not properly aligned with the slide can cause uneven die loading. A drive component with inaccurate bearing locations can create vibration or accelerated wear. Each relationship must be considered as part of the complete machine system.
Core components are assembled after machining and inspection. The assembly process includes the frame, slide, drive system, adjustment mechanism, clutch and brake components, hydraulic overload protection, cushion equipment, electrical controls, safety devices, and lubrication arrangements. A careful assembly sequence helps ensure that the machine’s sub-systems operate together rather than merely functioning independently.
Final testing should include no-load operation, speed verification, slide movement checks, die height adjustment, overload protection response, safety device testing, control interface verification, and inspection for abnormal vibration or noise. Where applicable, the press can also be evaluated under representative load conditions before shipment or during commissioning at the customer’s facility.
Quality control for a heavy press should cover raw materials, fabricated structures, machined surfaces, purchased components, assembly accuracy, electrical wiring, hydraulic circuits, and final machine performance. A finished-product inspection system helps identify issues before the machine reaches the production floor.
The producer states that it applies rigorous inspection to processes and components. This approach is important because long-term reliability is usually determined by many small details. Correct fastener torque, proper bearing installation, clean hydraulic lines, accurate sensor positioning, secure electrical connections, and correct lubrication can all affect service performance.
Precision inspection also supports the declared punch accuracy of Level 1GB and JIS 1 class, subject to the applicable test method and machine condition. Customers should review the acceptance criteria, inspection instruments, test loads, and documentation during technical negotiation. Clear acceptance standards help align expectations between the manufacturer and the buyer.
Reliability is further supported by preventive maintenance. Even a robust 44-ton press requires scheduled inspections. Maintenance teams should monitor lubrication, brake and clutch behavior, hydraulic pressure, slide guidance, die height adjustment, fastener condition, electrical cabinets, safety devices, and abnormal changes in sound or vibration.
When a press is used in high-volume production, maintenance planning should be connected to production data. Stroke counts, overload events, alarm history, and tooling changes can help determine when inspections are needed. A planned maintenance program is generally more economical than waiting for a failure that stops an entire line.
The BLPC-250 offers several advantages when compared with lower-capacity, single-point, lightly built, or less configurable presses. The most direct advantage is its 2,500 kN capacity, which enables the machine to address larger and stronger workpieces than smaller presses. This can reduce the need to divide an operation among multiple machines.
Its 44-ton high-rigidity structure provides a more stable platform than a lightly constructed press of similar external dimensions. The additional structural mass and reinforcement are valuable in applications involving large dies, high impact, repeated blanking, or unevenly distributed forming loads.
The double-point slide drive is another important distinction. Compared with a central single-point drive, it can provide better support for wide dies and help reduce slide tilting under off-center loads. This may improve die life, part consistency, and maintenance intervals when the tooling is properly matched to the machine.
The large worktable and 605 mm maximum die height in the horizontal configuration provide greater tooling flexibility than machines intended only for small or shallow dies. Manufacturers can use larger dies, more complex forming tools, and auxiliary systems without exceeding the available working envelope.
Variable-speed inverter control improves process adaptability. A fixed-speed press may force the operator to use the same operating rate for different materials and dies. The BLPC-250 allows a more suitable speed to be selected for the process, which can improve control during setup and support better productivity during stable production.
Hydraulic overload protection and photo-electronic safety devices add protective functions that may not be available on basic or older equipment. These features help protect the machine, tooling, and operators when correctly installed, maintained, and used in accordance with documented procedures.
Finally, the producer’s customization and integrated manufacturing capabilities can be an advantage for customers with special requirements. Rather than adapting every project to a fixed machine format, the customer can review technical options related to die size, controls, safety, automation, cushions, working height, and electrical standards.
The BLPC-250 is suitable for industrial sectors that require high-force and wide-die stamping. Automotive production is a major potential application area. The machine can support forming and blanking of structural components, brackets, reinforcement parts, panels, and other medium-to-large metal products, subject to material and tooling calculations.
Hardware manufacturing is another suitable field. Industrial hardware often includes brackets, frames, covers, fittings, and reinforced components that require substantial blanking or forming force. The machine’s large work area permits multi-station dies and larger component layouts.
Appliance manufacturing can benefit from the press’s die height and table dimensions. Components such as shells, panels, supports, and internal structural parts may require a combination of cutting, bending, shallow drawing, or forming operations. The adjustable speed range can help accommodate different materials and surface-quality requirements.
Construction and infrastructure components may also be produced on a machine of this class. Heavy brackets, connection plates, reinforcement elements, and formed sections can require significant force and robust tooling. In these applications, frame stability and overload protection are especially important because material thickness and local forming loads may vary.
General engineering and contract stamping companies can use the BLPC-250 as a flexible production asset. A job shop may need to change dies frequently and serve customers with different material specifications. The large working envelope, adjustable die height, variable speed, and double-point layout can support a broader order portfolio than a smaller specialized press.
A machine weighing approximately 44 tons requires careful site planning. The foundation must be evaluated for load-bearing capacity, levelness, vibration behavior, anchor arrangement, and access for installation. The final foundation design should be based on the manufacturer’s installation drawings and the conditions of the customer’s facility.
Transport and positioning require appropriate lifting equipment, qualified personnel, and a controlled installation plan. The machine’s dimensions, center of gravity, access route, ceiling clearance, and floor loading should be confirmed before shipment. Electrical power, compressed air, hydraulic service requirements, and ventilation should also be prepared in advance.
Commissioning normally includes leveling, anchoring, electrical connection, air connection, control verification, lubrication inspection, safety circuit testing, die height adjustment checks, and trial operation. If the machine will be connected to an automatic feeder or transfer system, the interface signals and emergency stop logic should be tested together.
Initial production trials should begin with a suitable die and controlled operating speed. The team should verify material feeding, slide motion, die alignment, cushion behavior, safety response, overload settings, part quality, and operating temperature. Any abnormal vibration, noise, leakage, or repeated alarm should be addressed before full-rate production.
Operator and maintenance training should be completed during commissioning. Training should cover normal operation, setup, die changes, speed selection, alarm handling, emergency stop procedures, lubrication, inspection, and safe isolation for maintenance.
Preventive maintenance begins with daily checks. Operators should inspect the work area, guards, photo-electronic devices, emergency stops, lubrication indicators, air pressure, hydraulic conditions, visible fasteners, and signs of leakage. They should also listen for changes in operating sound and observe whether the slide moves smoothly.
Regular maintenance intervals should include inspection of the clutch and brake, drive components, slide guides, die height adjustment system, hydraulic overload unit, cushion system, electrical cabinet, sensors, and control interface. The schedule should be adapted to the actual production rate, material type, stroke frequency, and number of die changes.
Lubrication is essential for reducing wear in moving components. The correct lubricant, quantity, delivery pressure, and application interval should follow the machine manual. Too little lubrication can produce heat and wear, while excessive or contaminated lubricant can create other problems.
Hydraulic systems should be checked for pressure stability, contamination, hose condition, seal performance, and abnormal temperature. The overload protection system should not be adjusted casually. Any change to its setting must be performed by authorized personnel using the correct procedure and appropriate test equipment.
Photo-electronic safety devices require regular cleaning and functional testing. The protective field must remain unobstructed, and the electrical safety circuit should be tested after maintenance or changes to the surrounding equipment. Safety components should be replaced with suitable parts that meet the required specifications.
Maintenance records should include dates, stroke counts where available, parts replaced, overload events, alarms, inspection results, and corrective actions. This information helps identify recurring issues and supports better planning for spare parts and service interventions.
Buyers should begin by identifying the maximum material thickness, tensile strength, blank size, forming depth, required tonnage, die dimensions, production rate, and automation method. The nominal 2,500 kN capacity is important, but the complete tonnage curve and pressure stroke must also match the actual operation.
Die dimensions should be checked against the worktable, slide bottom, maximum die height, adjustment range, throat depth, and column spacing. The die should have adequate support and clearance, and the machine should not be operated outside the permitted eccentric load or tooling limits.
Customers should determine whether the vertical or horizontal configuration is more suitable. The longer slide stroke of the vertical configuration may benefit certain forming operations, while the horizontal configuration provides a maximum die height of 605 mm and a higher listed speed range. The correct selection depends on the process and tooling rather than on one specification alone.
Electrical and safety requirements should be discussed early. Buyers should confirm voltage, frequency, control language, guarding, emergency stop arrangement, photo-electronic protection, automation signals, and applicable local regulations. These details can affect both delivery and installation.
Customization should be documented in a technical agreement. Any special table dimensions, die height, cushion requirements, feeder interface, working height, control functions, or inspection criteria should be clearly recorded. This reduces ambiguity and provides a useful reference for factory acceptance and final commissioning.
Before each production run, the operator should confirm that the correct die, material, program, speed setting, die height, and safety configuration are selected. The work area should be free from loose tools, scrap, and unauthorized personnel. The die should be secured according to the approved setup procedure.
Trial strokes should be performed at a controlled speed before the press is placed into continuous operation. Operators should observe the material feed, die clearance, slide movement, cushion response, part ejection, and safety circuit behavior. If an abnormal condition appears, the press should be stopped and the cause investigated.
Speed should be selected according to the process rather than simply the maximum available rate. A high rate may be suitable for stable blanking but inappropriate for a deep forming operation. Correct speed selection can help maintain part quality, reduce die stress, and limit unnecessary machine loading.
Operators should never bypass overload protection or safety devices. Repeated overload events indicate a process or tooling problem that must be corrected. Continuing production without resolving the cause can result in damage to the machine, die, material, or finished product.
At the end of a production run, the machine should be left in the condition specified by the operating procedure. Scrap should be removed, the work area cleaned, the slide placed in the appropriate position, and any alarm or maintenance issue recorded for the next shift.
Efficient production involves more than maximum strokes per minute. A press is productive when it delivers consistent parts with minimal downtime, manageable maintenance requirements, and effective use of tooling. The BLPC-250’s large working envelope and double-point architecture can support high-value dies and reduce the need for multiple secondary operations in suitable applications.
Variable-speed operation gives production managers an opportunity to align the machine cycle with the process. Running at the highest possible speed is not always the most efficient choice if it increases scrap, die wear, or unplanned maintenance. A controlled rate can produce a better total cost per acceptable part.
Durable construction can also support resource efficiency by extending the useful life of the machine and tooling. Stable operation, accurate adjustment, and timely maintenance reduce the likelihood of premature component replacement. Actual environmental performance depends on operating conditions, production planning, energy management, and the maintenance practices used at the facility.
Noise, vibration, lubrication management, and scrap handling should be considered in the overall factory layout. A properly prepared foundation, suitable guarding, organized material flow, and routine inspection can improve both working conditions and equipment availability.
The BLPC-250 has a nominal capacity of 2,500 kN. The appropriate operating force for a particular job depends on the material, die design, operation type, pressure stroke, and load location. Production engineers should confirm the complete capacity requirements before selecting tooling.
The double-point arrangement helps distribute the driving force across the width of the slide. This can reduce slide tilting and improve stability when using wide dies or when the forming load is not perfectly centered.
The listed maximum die height is 605 mm for the horizontal configuration and 550 mm for the vertical configuration. Both configurations include a 120 mm die height adjustment range according to the supplied specifications.
The worktable is listed as 2,700 x 900 x 170 mm. This provides a substantial surface for large dies, guide systems, material handling equipment, and related tooling components.
The vertical configuration has a 280 mm slide stroke and a listed speed range of 20 to 35 strokes per minute. The horizontal configuration has a 170 mm slide stroke and a listed speed range of 30 to 60 strokes per minute.
Yes. The press uses an inverter-based main drive, allowing the operating speed to be adjusted within the applicable machine range. The correct speed should be selected according to the die, material, forming process, and production requirements.
The integrated hydraulic overload protection is designed to respond to excessive loading and help protect the press and tooling. It should be used together with correct die design, material control, setup procedures, and regular maintenance.
The supplied product information identifies highly sensitive photo-electronic safety devices. The final safety arrangement may also include fixed guards, emergency stops, interlocks, and other equipment based on the machine configuration and the applicable risk assessment.
It can be suitable for forming applications when the required force, stroke, die height, cushion capability, material behavior, and tooling arrangement are compatible with the machine. The listed mold pad capacity, ram stroke, and effective cushion area support applications requiring controlled material movement.
Potential applications include automotive components, industrial hardware, appliances, construction parts, structural brackets, formed panels, and general contract stamping. Suitability depends on the specific component, material, die, and process calculations.
Buyers should confirm the required configuration, capacity curve, die dimensions, electrical standards, working height, automation interfaces, guarding, cushion requirements, foundation conditions, acceptance criteria, and available service support.
Maintenance should include daily operator inspections and scheduled checks of lubrication, hydraulic systems, overload protection, clutch and brake components, slide guidance, die height adjustment, electrical controls, safety devices, and structural fasteners. The manufacturer’s manual should be followed for exact intervals and procedures.
The BLPC-250 Robust Heavy-Duty Open-Type Double-Point Power Press is designed for manufacturers that need substantial force, a large die envelope, and reliable control in demanding stamping operations. Its 2,500 kN capacity, approximately 44-ton high-rigidity frame, double-point slide drive, 2,700 x 900 mm worktable, and 605 mm maximum die height in the horizontal configuration make it a strong candidate for large and complex tooling.
The machine’s advantages extend beyond its tonnage rating. Variable-speed inverter control supports process flexibility, the touch screen interface simplifies machine interaction, hydraulic overload protection helps defend against abnormal loading, and photo-electronic safety devices provide an important layer of operator protection. The cushion and mold pad specifications further broaden the range of forming operations that can be considered.
Its overall value also depends on the manufacturing capabilities behind the machine. Zhejiang Bolun High-Precision Machinery Co., Ltd. presents an integrated approach that combines design, production, customization, inspection, and service. Advanced fabrication, precision machining, careful assembly, and disciplined quality control are essential for transforming a large press design into dependable production equipment.
For customers selecting a high-capacity stamping machine, the most important step is to match the press with the complete production requirement. When the tooling, material, force, stroke, speed, safety system, and installation conditions are properly aligned, the BLPC-250 can provide a stable and flexible platform for demanding automotive, hardware, appliance, construction, and general industrial applications.
1. Manufacturer-supplied BLPC-250 product description and technical specification sheet.
2. Manufacturer-provided information on high-rigidity open-type double-point power press construction.
3. General principles of mechanical power press selection, die matching, and capacity evaluation.
4. General industrial guidance on press safeguarding, photo-electronic protective devices, and emergency stop systems.
5. General maintenance practices for mechanical presses, hydraulic overload systems, cushions, drives, and control equipment.
A buyer comparing a 45-ton open-gap press for a bracket line often receives two...
What Is a Power Press? A power press — also called a stamping press or punch pr...
Understanding Mechanical Power Presses and Their Essential Functions A mechani...
In the fields of metal forming, sheet metal fabrication, blanking, and punching,...
Two presses can both carry a 200-tonne nameplate and still produce very differe...
Start With the Purchase Decision, Not the Definitions A procurement engineer co...
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