MNM Comp-1K-0.1 for Spring, Actuator, Clamp & Bench Force Testing
- pete8781
- Jul 30
- 2 min read
Phone: (832) 290-3120 | Email: mnmscales@yahoo.com
Contact MNM Scales for help choosing fixtures and confirming that the 1,000 lb range is appropriate for your expected peak force.
Comp-1K-0.1 Spring, Actuator, Clamp & Bench Force Testing
The Comp-1K-0.1 combines a 1,000 lb S-type load cell with a 0.1 lb-reading LP7515 indicator. That range works well for many shop and laboratory tests where a 500 lb system would be too limited but a multi-thousand-pound setup would sacrifice useful low-force resolution.
Spring force testing
Use a guided compression fixture to compare spring force at defined heights or deflections. Force data is only useful when the spring position is also repeatable, so add a height stop, ruler, dial indicator, digital position sensor or machine travel reference. Pre-cycle springs when your test method requires it and keep loading rate consistent.
Actuator and cylinder thrust
For electric linear actuators, pneumatic cylinders and small hydraulic devices, mount the load cell in line with the output shaft and reaction frame. Compare extension and retraction forces separately when both matter. A test fixture should prevent the actuator from side-loading the S-beam as the rod travels.
Clamp and fixture force
Clamp-force checks can help standardize manual, pneumatic or toggle-clamp setups. Use consistent contact pads and geometry, because moving the load cell even slightly can change leverage. Peak Hold can be helpful for capturing the maximum force during clamp closure, while static hold force should be read after the fixture settles.
Bench press and assembly-force testing
Small arbor presses, assembly stations and press-fit fixtures can use the 1,000 lb system to compare insertion force, seating force, breakaway force or operator technique. For production quality checks, define the part location, stroke/height, loading rate and pass/fail force window so results are repeatable between operators.
Peak Hold: useful, but not the whole test
Peak Hold is ideal for a single maximum value, such as pull-off force or maximum spring compression. It does not show the force curve. If the test depends on force versus displacement, combine the load-cell system with position measurement and data capture.
Fixture design checklist
Keep the S-beam axially aligned in tension or compression.
Use guides/bearings to carry side loads rather than asking the load cell to guide machine motion.
Keep normal peak force comfortably below 1,000 lb and account for impact or overshoot.
Protect the cable and indicator from moving tooling and pinch points.
Verify calibration after changing adapters, fixtures or load-cell orientation.
FAQ
Is 1,000 lb enough for automotive springs?
It depends on the spring and test point. Estimate or measure expected peak force first and choose a capacity with reasonable margin. Do not use a 1,000 lb system when the spring can exceed its range.
Can I measure pull force too?
An S-type sensor can measure tension when connected through properly rated aligned hardware. Confirm the complete setup and calibrate/verify in the intended direction.
Why do two identical tests give different peaks?
Common causes include loading rate, part seating, fixture flex, side load, starting position and actuator pressure/speed variation. Improve the test method before changing calibration.
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