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Computer Controlled Torsion Testing Equipment ASTM A938

Computer Controlled Torsion Testing Equipment ASTM A938

Model: NJW

NJW series torsion testing machine consist of loading system, weight balancing system, transmission system, data collection system, and computer measuring and control system. Suitable to test the metal material, non-metal material, various kinds of structures like shaft, bolts, alloy components, etc., static torsion performance test. Can measure the torque, rotate angle. Show the torque-angle, torque-time, angle-time curve. The machine equipped with two sets independent working fixture. 


It is mainly used to check the material performance of bolts nuts, double-screw bolts etc., fastener and connection pairs of various grade 12.9, 10.9, 9.8, 8.8. Can measure the preload, fastening axial force F, yield fastening axial force, yield clamp force, limit clamp force, safety load, breaking load, torque T, angle etc., Conform with standard: DIN2510/5, DIN2510/6, ASME/ASNIB18.2.2, ASTM.A320/A320M, ASTM A325, ASTM A354.  


Horizontal structure, computer to display and data collection, fully digital AC servo system. Loading uniform and stable, no shock phenomenon, high data collection accuracy. 


General Introduction

NJW series torsion testing machine consist of loading system, weight balancing system, transmission system, data collection system, and computer measuring and control system. Suitable to test the metal material, non-metal material, various kinds of structures like shaft, bolts, alloy components, etc., static torsion performance test. Can measure the torque, rotate angle. Show the torque-angle, torque-time, angle-time curve. The machine equipped with two sets independent working fixture. 


It is mainly used to check the material performance of bolts nuts, double-screw bolts etc., fastener and connection pairs of various grade 12.9, 10.9, 9.8, 8.8. Can measure the preload, fastening axial force F, yield fastening axial force, yield clamp force, limit clamp force, safety load, breaking load, torque T, angle etc., Conform with standard: DIN2510/5, DIN2510/6, ASME/ASNIB18.2.2, ASTM.A320/A320M, ASTM A325, ASTM A354.  

Computer Controlled Torsion Testing Equipment ASTM A938

Computer Controlled Torsion Testing Equipment ASTM A938

Horizontal structure, computer to display and data collection, fully digital AC servo system. Loading uniform and stable, no shock phenomenon, high data collection accuracy. 

Key Features

  • Features
  • Protection and Key components
  • Standard
  • Application Material

1), Adopt servo control system, through the servo to control motor, cycloidal pin gear speed reducer drive the active chuck rotate;

2), High precision torsion sensor to measure the sample torque; 

3), Photoelectric encoder to measure torsion angle;

4), Computer display test result,

5), With high stiffness and high endurance straight guide rail.

6), Controller can adjust sampling rate, at material yield stage can use high sampling rate;

7), Software can divide three level management, different level has different limit of authority;

8), Main test software operation, function, curve, data real time display on the main window, easy operation, can display torque-torsion angle, torque-corner, torque-time, torsion angle-time etc. curve;

9), Software can calculate and analysis shear modulus G, provision non-proportional torsion strengthτP0.015 and τP0.3, upper torsion yield strength τSu, lower torsion yield strength τSl, torsion strength τb, max. non-proportional shearing strainγ max.;

10), Can turn positive and negative two directions, after test finish, automatically or manually return to test original position.

★Loadframe: use horizontal structure, the main structure is frame casting structure, to ensure the whole rigidity, main spindle and clamper use super steel to ensue lone working life; specimen load and unload convenient and fast; clamper moving side adopt precision guide rail, minimum the specimen axial load.

★The driving system: using imported AC servo motor, with wide adjusting range, and loading stable, uniform;

★The transmission system: using precision reducer drive, ensure uniform, stable and transmission precision.

★Measurement and display system: the machine adopts the photoelectric encoder to collect the samples of the torsional angle data, high precision torque sensor to collect the torque data, high precision rotary encoder to measure specimen deformation; PC screen to display test parameter like torque, angle, deformation and curves.

★Security protection system: overload protection, over current protection.

ISO 7800: Metallic materials -- Wire -- Simple torsion test

ISO 6475: Implants for surgery -- Metal bone screws with asymmetrical thread and spherical under-surface -- Mechanical requirements and test methods.

ASTM F543: Standard Specification and Test Methods for Metallic Medical Bone Screws

ASTM F383 Static Bend and Torsion Testing of Intramedullary Rods

ASTM E2207 Axial-Torsional Fatigue Thin-Walled Tubular Materials Test Equipment

ASTM D5279 Thermoset & Thermoplastic Dynamic Torsion Testing Machine

ASTM D1043 Torsion Plastics Test Equipment

ASTM A938 Torsional Test of Wire


Steel material: Steel wire, steel rod, steel rebar etc.,

Copper material: copper wire, copper rod, copper alloy etc., 

Aluminum material: Aluminum wire, aluminum rod, aluminum alloy etc., 

Other metal wire, rod, glass fiber reinforced plastic, alloy steel etc., 

Hexagon bolts, steel structure bolts. 

Main Technical Specification

1, 5~200N.m 


Model

NJW-

NJW-10

NJW-20

NJW-50

NJW-100

NJW-200

Max. torque

5N.m

10N.m

20N.m

50N.m
100N.m
200N.m
Torque measuring   range2%---100% F.S
Torque   indication accuracy±1%
Torque   resolution0.01N.m0.1N.m
Torsion   angle Min. reading0.1º
Max.   torque angle 9999.9º
Effective   test space0~260mm (customized available)
Dimensions920*300*300mm950*330*400mm
Power supply50Hz, 220V, Single   phase
Weight100Kg130Kg


2, 500~5000N.m 

ModelNJW-500NJW-1000NJW-2000NJW-3000NJW-5000
Max. torque500N.m1000N.m2000N.m3000N.m5000N.m
Torque measuring   range2%---100% F.S
Torque   indication accuracy±1%
Torque   resolution0.1N.m
Torsion   speed1 º/min ~ 720   º/min1 º/min ~ 360   º/min
Speed   accuracy±1%
Torsion   angle measuring error±1%
Torsion   angle Min. reading0.1º
Effective   test space0~500mm (customized available)
Dimensions1650*450*1120mm1750*550*1250mm
Power supply50Hz, 220V, Single   phase
Weight600Kg800Kg1000Kg


Main Accessories

Frame1   set
Metal sheet torsion test fixture1   set
Fully digital AC servo motor1   set
AC servo driving system1   set
High accuracy torque sensor 2000N.m1   set
Torsion angle sensor1   pc
Precision heavy duty liner guideway2   pairs
Precision speed reducer2   sets
Cycloidal pin wheel speed reducer1   set
FTS inspection software1   set
Computer (DELL or HP)1 set
Printer (HP)1   set
Documents (Manual, packing list, certificate)


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Beijing United Test Co., Ltd.