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Transmission Fluid Anti-Shudder Friction Tester GB/T 11118

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Whats/App: +86 185 0176 3615

Web: qinsun-lab.com

The Passenger Vehicle Automatic Transmission Fluid Anti-Shudder Friction Tester is a specialized friction testing system designed to evaluate the friction characteristics and anti-shudder durability of automatic transmission fluids (ATF) under controlled pressure, speed, and temperature conditions.

You can use this tester to accurately simulate the real operating conditions of wet friction pairs in automatic transmissions, enabling quantitative analysis of friction behavior during running-in, low-speed operation, and long-term durability. It provides reliable technical support for lubricant development, quality control, and compliance verification.

Standards

The tester is designed to meet and support the following domestic and international standards and test methods:

(1) GB/T 11118 — Tribological Performance Test Methods for Lubricants

(2) GB/T 3142 — General Test Methods for Lubricant Viscosity and Performance

(3) JASO M348 — Friction Characteristics Test Method for Automatic Transmission Fluids

(4) SAE No.2 — Friction Test Method for Automatic Transmission Fluids

Note: Differences in speed profiles, loading modes, temperature programs, and data processing requirements among standards can be accommodated through software parameter configuration.

Parameters

CategoryParameterTechnical SpecificationRemarks
Load system Axial load range 200 N – 10,000 N Servo-hydraulic loading
Load indication relative error ±0.5%
Long-term load holding error ±0.05 MPa
Stroke Axial loading stroke 150 mm
Friction measurement Maximum friction torque 320 N·m
Friction torque relative error ±2%
Drive system Sliding speed range 0.01 – 1.5 m/s Continuously adjustable
Speed control accuracy ±0.01 m/s
Drive motor 380 V / 11 kW AC servo motor
Temperature control Temperature range –30 °C to 200 °C Indirect heating & cooling
Temperature control accuracy ±2 °C
Heating power 220 V / 300 W
Cooling power 220 V / 2.37 kW
System power Total power 16.5 kW Including load, drive, temperature
Control & monitoring Time setting range 1 s – 9999 min
Real-time monitored parameters Load, friction force, speed, temperature, time

Features

(1) Servo-hydraulic constant-force loading ensures high stability and fast response of axial load

(2) AC servo drive system meets strict accuracy requirements for low-speed friction testing

(3) Supports both LVFA low-speed friction tests and SAE No.2 durability test modes

(4) High-precision strain-gauge sensors simultaneously measure load and friction torque

(5) Integrated heating and cooling temperature control system enables wide temperature testing

(6) Integrated control and data acquisition system provides fully automated test operation

(7) Built-in μ–V curve analysis and anti-shudder life evaluation logic reduces operator influence


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