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High-frequency rotating linear-oscillation SRV friction testing machine

High-frequency rotating linear-oscillation SRV friction testing machine

Model: UT1054SRV, ASTM D5707, ISO 20120, ASTM D7421

UT1054SRV High-frequency rotating linear-oscillation SRV friction testing machine, also known as high-frequency reciprocating friction and wear tester, the diesel lubricity tester, is an instrument used to assess the wear resistance of oils like diesel and lubricants. It's mainly used in fields like chemical engineering, petroleum, and aerospace. This test can simulate the lubrication situation of piston rings in car engine cylinders and generate Stribeck curves in a reciprocating mode. Besides that, it's also used to study tribological behavior in high-temperature environments. It's a key tool for evaluating how engine oils reduce friction and wear, as well as how their performance degrades during use. 

Conform with: ISO 20120 Lubricants — Determination of the coefficient of friction of synchronizer lubricated by manual transmission fluids (MTF) — High-frequency, linear-oscillation (SRV) test machine

ASTM D7421 Standard Test Method for Determining Extreme Pressure Properties of Lubricating Oils Using High-Frequency, Linear-Oscillation (SRV) Test Machine

ASTM D5707 Standard Test Method for measuring friction and wear properties of lubricating grease using a high-frequency, linear-oscillation test machine


Core Testing Capabilities

Simulates real working conditions (low temperature, variable load, high frequency) and supports dynamic tribological performance testing of friction pairs. Can test the changes in friction coefficient, meet dry friction conditions, and support high-frequency reciprocating friction tests for pin-on-disk samples.

General Introduction

UT1054SRV High-Frequency SRV Friction and Wear Tester | UnitedTest

UnitedTest manufactures the UT1054SRV High-frequency Rotating Linear-Oscillation SRV Friction Testing Machine, also widely recognized as a high-frequency reciprocating friction and wear tester or diesel lubricity tester. This advanced tribology testing instrument is purpose-built to evaluate the wear resistance and lubrication performance of diesel fuel, engine oil, and industrial lubricants, serving critical quality testing needs for petroleum, chemical engineering, and aerospace industries.


The UT1054SRV SRV friction wear tester excels at simulating real-world engine operating conditions, accurately replicating the lubrication state of piston rings inside automotive engine cylinders. Featuring professional reciprocating testing mode, it generates precise Stribeck curves for comprehensive lubrication performance analysis. Beyond standard room-temperature testing, the machine supports high-temperature tribological behavior research, making it a core testing tool for assessing engine oil friction reduction capabilities, anti-wear performance, and long-term performance degradation during service cycles.

Core Testing Capabilities of UT1054SRV SRV Friction Tester

This high-frequency reciprocating friction and wear testing machine simulates authentic industrial and engine working conditions, including low-temperature environments, variable load pressures, and high-frequency oscillation motion, enabling accurate dynamic tribological performance testing of various friction pairs. It real-time monitors and records real-time friction coefficient changes throughout the test process, supports dry friction condition testing, and completes high-frequency reciprocating friction tests for standard pin-on-disk samples. Ideal for lubricant formula optimization, fuel lubricity verification, and mechanical component tribology research, it delivers stable, repeatable test data for industrial R&D and quality control.


Environmental Simulation

Temperature needs to run at the set value, range: room temperature to 150℃, control accuracy ±1℃;

Atmosphere control; inert gas environment (helium/nitrogen), when filling gas must meet purity requirements and ensure no water vapor contamination;

Key Features

  • Key Specifications
  • Displacement Measurement System
  • Intelligent Control and Data Management
  • Standard
  • Keywords

① Mechanical Performance:

Maximum normal load needs to run at the set value, range: 150N, dynamic loading accuracy ±1% FS.

Reciprocating frequency needs to run at the set value, range: 1-200Hz;

Reciprocating stroke needs to run at the set value, range: 0~10mm; accuracy 0.01mm;

② Measurement System:

Friction force testing: range ±100N, resolution 0.05N, sampling frequency 2ms;

Temperature monitoring: can monitor sample surface temperature; (accuracy ±1℃);

③ Structural Design:

Main structure: uses high-strength, high-rigidity design to ensure stability without vibration at high speed, equipment frame and moving parts must withstand a maximum load of 500N without deformation;

Transmission system: uses high-precision electromagnetic drive to ensure smooth and accurate high-speed reciprocating motion; motor must support 200Hz high-frequency reciprocating motion and operate continuously for 100 hours without failure; accuracy requirement: under 200Hz operation, amplitude fluctuation ≤0.01mm;

High-frequency rotating linear-oscillation SRV friction testing machine

Linear motor (also called a linear electric motor) is a device that directly converts electrical energy into linear mechanical motion, without the need for intermediate transmission mechanisms like a ball screw that traditional rotary motors require. Here are the key points: 

1) Working Principle and Structure

Basic Principle:

It can be seen as a rotary motor cut along the radial direction and flattened, generating linear thrust through electromagnetic induction. When the stator is powered, it creates a traveling magnetic field that drives the mover (secondary) to move linearly along the guide rail, with the speed synchronized to the magnetic field.

2) Technical Advantages

High Performance:

Speed can reach 208 m/min, with acceleration exceeding 30g (much higher than the traditional 60 m/min and 1g). Positioning accuracy reaches 0.1–0.01 μm, with nanometer-level resolution.

Zero Transmission Structure:

Eliminates intermediate parts like screws and gears, reducing elastic deformation, backlash, and mechanical wear.

Long Stroke and High Adaptability:

The stators can be linked indefinitely, supporting ultra-long strokes (e.g., over 40 m); because there's no contact motion, noise is low and lifespan is long.


The laser head is a high-precision displacement measurement device based on optical principles. It achieves position feedback by detecting the markings on a linear scale or encoder, and is widely used in precision manufacturing, testing equipment, and scientific research. Its core technologies and applications are as follows:

High-frequency rotating linear-oscillation SRV friction testing machine

1) Working Principle and Structure

Measurement Principle:

The laser head emits a laser beam onto a linear scale, receives the reflected or transmitted light signal, and converts the marking displacement into electrical signals through interference or diffraction effects, achieving nanometer-level position resolution. Some high-end models (like Renishaw RESOLUTE) use absolute encoding technology and support BISS protocol communication, so there’s no need to reset the origin after a power outage.

2) Key Technical Indicators:

Resolution: Up to 1 nm (linear scale) or 32-bit (rotary scale), with an electronic subdivision error of ±40 nm.

Interference Resistance: IP64 sealing level, resistant to dust and oil contamination, with a built-in independent position verification algorithm to enhance reliability.


Friction Pair Device: The friction pair is firmly installed, with high alignment and vertical precision, easy to replace and adjust, ensuring the repeatability and accuracy of experiments; requires parts machining precision ≤0.02mm. Modular Clamping System: Supports quick replacement of friction pairs and provides custom fixtures for irregular parts.


Precision Requirements: Moving parts need high machining precision, with parts machining precision ≤0.01mm, ensuring positional accuracy and repeat positioning during experiments.

Uses high-rigidity alloy steel base, natural frequency >200Hz, to avoid resonance interference.


Computer automatic control with high-speed data processing capabilities.

Supports various experiment modes, such as constant-speed friction, variable-speed friction, constant-load friction, variable-load friction, and program-controlled friction.

Automatic control of loading time to achieve automatic loading.

Automatically and in real-time collects and processes experimental data such as friction force, loading force, speed, displacement, temperature, etc., saving records or outputting for easy access.

Experimental reports can include temperature curves, friction force curves, load curves, and reciprocating frequency curves.

Automatically stops when temperature, current, load, speed, etc., exceed preset limits or the experiment reaches the preset time.


Safety and Reliability: Overvoltage, undervoltage, motor overcurrent, test load exceeding preset limits, temperature exceeding preset limits, speed exceeding preset limits, vibration level exceeding preset limits, safety guard interlock that stops when opened, ELCB (earth leakage circuit breaker), and emergency stop button.

Noise at the workstation <50dB(A), instantaneous noise <60dB(A).


ISO 20120 Lubricants — Determination of the coefficient of friction of synchronizer lubricated by manual transmission fluids (MTF) — High-frequency, linear-oscillation (SRV) test machine

ASTM D7421 Standard Test Method for Determining Extreme Pressure Properties of Lubricating Oils Using High-Frequency, Linear-Oscillation (SRV) Test Machine

ASTM D5706 Standard Test Method for determining extreme pressure properties of lubricating greases using a high-frequency, linear-oscillation test machine 

ASTM D5707 Standard Test Method for measuring friction and wear properties of lubricating grease using a high-frequency, linear-oscillation test machine

ASTM D6425 Equivalent to DIN 51834 part 2, Standard test method for measuring the friction and wear properties of EP lubricating oils using the SRV test machine

ASTM D 7217 Standard Test Method for Determining Extreme Pressure Properties of Solid Bonded Films Using a High Frequency Linear Oscillation SRV Test Machine

ASTM D7420 Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation  Test Machine

ASTM D7594 – Standard Test Method for Determining Fretting Wear Resistance of Lubricating Greases Under High Hertzian Contact Pressures Using a High-Frequency, Linear-Oscillation Test Machine

DIN 51834-1 Tribological test in the translatory oscillation apparatus Part 1: General working principles

DIN 51834-2 Tribological test in the translatory oscillation apparatus

Part 2: Standard test method for measuring the friction and wear properties of EP lubricating oils 

DIN 51834-3 Tribological test in the translatory oscillation apparatus Determination of tribological behavior of materials in co-operation with lubricants

DIN 51834-4 Tribological test in the translatory oscillation apparatus Testing the tribological performance of gear and hydraulic fluids

DIN 62136-1 Textile machinery and accessories – Needle and sinker lubricating oils for weft knitting machines

DIN 51834-5 Standardization project in the automotive sector 

DIN 51834-6 Standard Test Method for Measuring Friction and Wear Properties of Lubricating Grease Using a High-Frequency, Linear-Oscillation Test Machine

DIN 51834-7 Standard Test Method for Determining Extreme Pressure Properties of Lubricating Greases Using a High-Frequency, Linear-Oscillation  Test Machine

DIN 51834-8 Tribological test in translatory oscillation apparatus of bonded solid films DIN 51834-9 Evaluation of plastic greases with plastic specimens

UnitedTest UT1054SRV tester, SRV friction and wear tester, high-frequency reciprocating friction tester, diesel lubricity testing machine, engine oil tribology tester;

High temperature tribological behavior testing equipment, piston ring cylinder lubrication Stribeck curve tester, pin-on-disk high frequency friction wear test machine, petroleum aerospace lubricant anti-wear performance analyzer, variable load dynamic friction coefficient testing device


Main Technical Specification

Normal force5-150N
Accuracy grade0.5
Horizontal   force5-100N
Horizontal force loading frequency1-200Hz (actuator supports 500Hz)
Accuracy grade0.5
Horizontal displacement stroke±10mm
Displacement accuracy50nm
Environmental chamber temperatureroom temperature to 150°C
Environmental chamber sizeCustomized
Overall dimensionsapprox. 650*450*600mm
Total weight110kg
Operating voltage220V
Total powerapprox. 3kW


Main Accessories

ItemQuantity
Aluminum alloy machine frame1 set
Electromagnetic actuator2 sets
Imported brand force transducer2 sets
Environmental chamber1 set
Dual-channel fatigue controller1 set
Dual-channel software1 set
Computer1 set
Printer1 set
Documents (Manual, packing list, certificate)



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Beijing United Test Co., Ltd.