GPM-40 Microcomputer-Controlled Rolling Contact Fatigue Test Bench

I. Main Purpose

The GPM-40 microcomputer-controlled rolling contact fatigue test bench is used to simulate failure tests under working conditions of rolling contact components such as bearings, wheel rims, and rollers. It applies a constant load to specimens undergoing rolling or rolling plus sliding contact, causing cyclic contact stress on their surfaces. By controlling and varying parameters such as load, speed, slip ratio, time, friction pair materials, surface roughness, and hardness, the test evaluates the comprehensive performance of the specimen materials. It meets the requirements of the standard GB10622-89, "Test Method for Rolling Contact Fatigue of Metallic Materials."

II. Main Technical Specifications

1.1 Test Force: 1.2–30 kN
1.2 Relative Error of Test Force Indication: ≤ ±1%
1.3 Long-Term Holding Error of Test Force Indication: ≤ ±1% F.S
1.4 Maximum Test Torque: 20 Nm
1.5 Relative Error of Torque Indication: ≤ ±1%
1.6 Test Speed: 5–2000 r/min, steplessly adjustable
1.7 Test Time Control Range: 1 s–9999 min
1.8 Test Revolution Display and Control Range: 999,999,999
1.9 Specimen Dimensions: As per standard requirements
1.10 Test Space: Accommodates clamping of friction pairs
1.11 Servo Motor Power: 5 kW (dual-motor control)
1.12 Shutdown Control Methods: Manual/Automatic (time, test force, etc.)
1.13 Main Unit Dimensions: 1700 × 860 × 1230 mm
1.14 The quality of electrical equipment, assembly quality, and appearance quality of the testing machine shall comply with the relevant provisions of GB/T 2611.