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Pioneering a New Pressing Method

Beckwood LSP™ is a high-end linear servo press line that uses patented gearbox technology to achieve the highest degree of forming flexibility at production-level speeds. With presses ranging from 125 – 500 tons, Beckwood LSP™ offers the highest tonnage capacity of any linear servo press available. While hydraulic and mechanical presses have seen some improvements over the last few decades to increase efficiency and precision, these technologies have remained relatively unchanged—until now.  High precision, uptime, reliability, and unmatched forming flexibility are pillars of this world-class press technology.

How Does a Linear Servo Press Work?

A linear servo press works by using a servo motor to drive a linear motion system, such as a ball screw or roller screw, to control the ram motion. During the pressing process, sensors monitor the force, speed, and position of the ram, and adjust the servo motor as needed to maintain desired process parameters. Once the pressing is complete, the servo motor and linear motion system return the ram to its home position. Unlike traditional hydraulic or mechanical presses, which use fixed-speed motors to drive the ram, linear servo presses can adjust speeds quickly throughout the cycle to control the motion of the ram with a high degree of precision and accuracy.

Linear Servo Press Uses

Linear servo presses work optimally for both servo-mechanical press applications and hydraulic press applications. The use of a servo motor and linear motion system allows for greater control over the pressing process, including the ability to adjust the press force, speed, and stroke. This makes linear servo presses ideal for stamping of high-strength steels, complex draw forming, progressive die forming, assembly, and any application that requires high-precision and/or accuracy.

Benefits of a Linear Servo Press

  • Flexible Forming: Complex draw work and stamping high-strength alloys require tight process control.  With Beckwood LSP™, you can easily program ram position, travel distance, and speeds for maximum productivity. With instant feedback for diagnostics and data acquisition to record and measure torque, force, position, and time, no press offers more precision or better part quality.
  • Full Tonnage Throughout the Stroke: Unlike servo-mechanical presses, linear servo presses achieve full tonnage at any point in the stroke, eliminating BDC and TDC.  This also means we don’t de-rate tonnages for long draws or long strokes, and tooling can be designed to accommodate any shut height. Never over-buy on tonnage to compensate for BDC again!
  • Improved Die Handling: Because the linear servo actuators maintain extreme parallelism during each cycle, tooling lasts longer than with traditional pressing methods. Additionally, tonnage monitoring with overload protection comes standard on every cycle. And eliminating the counterbalance system makes die setup and changeover simple.
  • Fewer Components=No Maintenance: The all-electric actuation on a linear servo press means it doesn’t require crankshafts, flywheels, external lubrication systems, or hydraulic power units. This eliminates prolonged downtime, part contamination, and costly repairs. The simplified design results in up to 60%  fewer components on your BOM, easy set-up, and fast troubleshooting. Linear servo presses can run millions of cycles before needing any maintenance.
  • Energy Efficiency: Hydraulic systems consume a large amount of electricity, even during idle times.  Linear servo presses use energy on-demand, yielding energy and cost savings of up to 70% compared to hydraulic presses.
  • Low Noise Output: Eliminating the HPU and large crankshaft and only using energy on-demand results in greatly reduced ambient noise levels.

ARTICLE: The growing popularity of Linear Servo Press Technology

ARTICLE: Linear Servo Presses Find Roles in Automotive Manufacturing

WHITEPAPER: Hydraulic vs. Servo-Electric Presses 

Standard Linear Servo Presses

The Beckwood LSP™ product line features 8 standard models in an array of sizes, speeds, and tonnages. Refer to the chart below for our standard model specifications.

System Specs
Model #
Tonnage
Bed / Ram Size
Daylight / Stroke
Shut Height
Upper Die Weight
LSP-125-2436
125
24" x 36"
24" / 24"
0"
1,000 lbs
LSP-125-3648
125
36" x 48"
36" / 24"
12"
1,000 lbs
LSP-250-3660
250
36" x 60"
36" / 24"
12"
3,000 lbs
LSP-250-4896
250
48" x 96"
48" / 36"
12"
3,000 lbs
LSP-375-3672
375
36" x 72"
36" / 24"
12"
4,500 lbs
LSP-375-4896
375
48" x 96"
48" / 36"
12"
4,500 lbs
LSP-500-4896
500
48" x 96"
48" / 36"
12"
5,000 lbs
LSP-500-60120
500
60" x 120"
60" / 36"
24"
5,000 lbs
Speed Packages
Fast Approach / Retract (No Load)
Speeds (IPM)
Motor (KW)
388
15
604
30
Process Speeds
Speeds (IPM)
Motor (KW)
0-47
15
0-73
22
0-94
30
0-140*
45
*No Fast Approach/Retract
Any configuration of No Load and Process speeds can be applied to any model.
Universal Specs
Rated Tonnage Point
Full Stroke - Unlimited
Dwell*
5 seconds
Power*
480V/3PH/60HZ
Controls
21" color touchscreen with Beckwood iFlex
*Alternate power configurations and infinite dwell capability available upon request.

Standard Features

  • 8-Point gib-guided unitized frame
  • Vibration dampening pads
  • T-slots
  • Data acquisition
  • Recipe handling (1,000 capacity)
  • 21” PC-based touchscreen
  • Beckwood’s iFlex Controls
  • Part quality monitoring
  • Built-in ram Active Level Control (250T+)
  • Overload protection

Options

  • Light curtains & safety guarding
  • Additional speed configurations
  • Additional power configurations
  • Infinite dwell
  • Die protection
  • Custom die mounting provisions
  • Quick die change systems
  • Complete press customization

LSP™ vs. Servo-Mechanical Presses:

  • No crankshaft, flywheel, or recirculating lubrication system
  • Full tonnage throughout the stroke—no BDC
  • No derating tonnages for long draws or long strokes & no over-buying on tonnage to accommodate for loss above BDC
  • No scheduled maintenance for millions of cycles
  • No counterbalance system or EMS
  • Prolonged die life with overload protection
  • Easy die setup and changeover; tooling can accommodate any shut height
  • Tight process control for complex draw work
  • Minimized breakthrough & reverse tonnage shock
  • Easily create and edit motion profiles, changing speeds throughout the cycle if needed
  • Improved part quality and throughput
  • Readily available, small servo motors that are affordable with short lead times
  • Lower cost of acquisition

LSP™ vs. Hydraulic Presses:

  • No hoses, fittings, tanks, or hydraulic fluid
  • No part contamination & reduced scrap = higher throughput
  • High precision & force accuracy
  • Precision linear actuators provide superior rigidity
  • No scheduled maintenance for millions of cycles
  • Up to 70% less energy usage
  • Reduced carbon footprint
  • Improved safety by keeping facility floors oil-free
  • 60% fewer components on your BOM for easy setup and troubleshooting
  • Significantly lower noise output
  • Increased speed control flexibility
  • Multiple cylinder design controls press parallelism
  • Optional extended dwell capability for compression molding applications
  • Improved control over decompression shock when used with in-die nitrogen springs

Custom Presses & Retrofits

If your linear servo press needs fall outside of the Beckwood LSP™ line, we also offer fully custom options up to 500 tons. You’ll not only get the intuitive controls package that accompanies our LSP™ machines, but your bed size, tonnage, frame style, and more will be engineered to your exact specifications. If a new press isn’t in your budget at this time, we can also retrofit existing presses with our patented linear servo actuation system to achieve all of the benefits listed above at a fraction of the cost. Contact us for a custom quote today!

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