The TST is a manually operated torque / angle tester that is available in seven force ranges: 0.3, 3, 25, 100, 200, 500 and 1,300 in-lb. The solid steel base and aluminum frame is rugged for durability in many different testing environments. The TST, like all LSI testers, comes standard with an NIST traceable certificate of calibration.
Absolute Zero
Take the guesswork out of testing with LSI’s revolutionary absolute zeroing technique. Used with custom interchangeable tooling, this technique improves repeatability of setups and results during testing. Parts are then measured against the nominal dimensions according to the drawing or specifications, not to a relative point requiring intuition and guesswork.
Custom Interchangeable Tooling
Using LSI’s custom interchangeable tooling technique, you can machine tooling blanks to fit your specific applications or send the information to us and we will do the work for you.
Achieve 30 second tool-less changeovers from type to type
Identical setups each time enhance repeatability
Pre-machined blanks make tooling inexpensive and standardized
Tooling can be designed to exactly match assembly features for best correlation
Built-in angle zeroing provides ± 0.1° setup accuracy every time
The best solution for repeating parts or specific spring types or families
With the universal tooling supplied by LSI, you can test many parts with no special fittings. This is great for unique or one-time job runs with a minimum of setup time.
Universal Tooling Example
2″, 3″ & 4″ universal fittings
A conventional approach that has good flexibility in making setups
Includes chuck, mandrill set to 17/32″ diameter and reaction plate
Both custom and universal tooling is designed to be changed in seconds… YES! In just seconds, you can go from one setup to the next, maintaining your repeatability and reproducibility. Setups within ± 0.1°.
Smart Interchangeable Torque Cartridges
Switch from one torque cartridge to another in just minutes, allowing for a single tester to test a wide range of capacities quickly and accurately. Smart torque cartridges can be digitally calibrated. You can also send in only the smart torque cartridge to LSI for remote calibration (full system calibration is better than individual component calibration).
Part sorting using bright LED limit lights for good / bad parts and a statistical summary printout that includes a histogram and data run chart.
This software option lets the user program the limit lights to make sorting reliable and efficient. This option also uses the programmed limits to enable the Mean, Standard Deviation, Range, Range Chart, Histogram, Cp and Cpk statistical printed outputs. Limit Lights and Full Statistics Analysis is a tester software feature. A PC is not needed for this software.
The TST has a built-in mean, standard deviation, range, statistical summary and data logger that can store up to 1,800 test points. It also has automatic deflection compensation, which corrects for torque windup and always displays accurate angle measurements. RS 232 is standard. Soft keys give the user access to digital calibration, linearization and features like user programmable force filter, programmable length offset, user customized print headings, automatic calculation of mean, standard deviation and range of data. Use the RS 232 port for statistical printout or talking to a PC. It works great with LSI’s SSS, a PC-based “Statistical & Spreadsheet Interface Software,” which features dynamic data exchange, allowing you to communicate to spreadsheets like Excel. Measure torque in in-lb, N-mm, gm-mm, kg-m, in-oz, ft-lb, N-m, kg-mm and kg-cm.
Torsion Tests Under Compression
Create a more life-like test with optional adjustable compression. The X-Axis Compression Adjuster allows you to apply up to 250 lb of compression force, (based on prior force / length measurements) and gain more accurate readings for your part tests.
Use the optional X-Axis Linear Scale to set compression by length.
2 Point with Rate
Test two points with spring rate calculation in one deflection of the spring.
2 Point With Rate is a tester software option that allows you to calculate the rate (or spring constant) between two points. To use this feature, press the Test Mode button to enter 2 Point With Rate mode. Set your first test point by using the tester’s force and length readings as a guide and pressing the F1 button. Set the second test point using the same method. When both test points are set the tester automatically calculates and displays the rate as shown. This is all accomplished in just one deflection of the spring!
2 Point with Rate is a tester software feature. A PC is not needed for this software.
Two-point testing with automatic free angle calculation. Calculate your torsion springs free angle without measuring by testing two points in one deflection of the spring.
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Three Rotational Stops
For repetitive applications requiring multiple test points on a given spring, the Torsion Spring Tester comes equipped with three stops that can be preset to any given test point.
Battery or AC Powered
A self-contained tester with an internal, rechargeable battery pack (approximately 8-10 hours of continuous operation). AC charger also included with each tester.
Loading Capability
The TST comes standard with two cranking ratios, giving the operator flexibility when testing. Use the 1:1 ratio for light springs or course movements. Choose the 40:1 micro adjust to fine tune the measurements.
Part Number: 050-0000-0072-00
2 Point With Rate is a tester software option that allows you to calculate the rate (or spring constant) between two points. To use this feature, press the Test Mode button to enter 2 Point With Rate mode. Set your first test point by using the tester’s force and length readings as a guide and pressing the F1 button. Set the second test point using the same method. When both test points are set the tester automatically calculates and displays the rate as shown. This is all accomplished in just one deflection of the spring!
2 Point with Rate is a tester software feature. A PC is not needed for this software.
Part Number: 050-0000-0073-00
This software option lets the user program the limit lights to make sorting reliable and efficient. This option also uses the programmed limits to enable the Mean, Standard Deviation, Range, Range Chart, Histogram, Cp and Cpk statistical printed outputs.
Limit Lights and Full Statistics Analysis is a tester software feature. A PC is not needed for this software. Sample printouts are examples of testing with limits on an SDHT tester.
Part Number: 050-1000-0040-01
Calculated Free Angle is a tester software option that allows you to calculate the free angle of a torsion spring. To use this feature, press the Test Mode button to enter 2 Point with Free Angle mode. Set your first test point by using the tester’s force and angle readings as a guide and pressing the F1 button. Set the second test point using the same method. When both test points are set the tester automatically calculates and displays the rate and the free angle.
Calculated Free Angle is a tester software feature. A PC is not needed for this software.
Part Number: 0025-0000-0379-00
The universal tooling assembly available from LSI can be configured to test many parts without attaching any other fixtures. This assembly includes 2”, 3”, and 4” universal fixtures, a chuck, a mandrill set to 17/32” diameter and a reaction plate.
Part Number: 025-0000-0353-00
The universal tooling assembly available from LSI can be configured to test many parts without attaching any other fixtures. This assembly includes 2”, 3”, and 4” universal fixtures, a chuck, a mandrill set to 17/32” diameter and a reaction plate.
Part Number: 025-0000-0477-00
If you need to know how many revolutions your wire or other material can withstand, these attachments are perfect. This can be used to measure wire twist before breakage or twist and load characteristics. Choose between two jacobs chuck grip sizes.
Part Number: 025-0000-0477-01
If you need to know how many revolutions your wire or other material can withstand, these attachments are perfect. This can be used to measure wire twist before breakage or twist and load characteristics. Choose between two jacobs chuck grip sizes.
Part Number: 025-0000-0480-00
If you need to know how many revolutions your wire or other material can withstand, these attachments are perfect. This can be used to measure wire twist before breakage or twist and load characteristics. Choose between two jacobs chuck grip sizes.
Part Number: 025-0000-0368-03
This set includes the following weight sizes for a total of 40.5 lb:
(1) 0.5 lb slotted weight
(1) 1 lb slotted weight
(2) 2 lb slotted weights
(1) 5 lb slotted weight
(1) 10 lb slotted weight
(1) 20 lb slotted weight
The SSS software can connect to any LSI manual tester, including the DHT and the TST, and virtually any measuring device that can send data via RS232. The SSS can also accept data from the keyboard. By setting up a specific testing method, you can test your springs reliably and repeatedly and generate one comprehensive report.