ASTM D5707-2005
用高频率,线性摆动试验机测量润滑油脂开裂和磨损特征的标准试验方法
Standard Test Method for Measuring Friction and Wear Properties of Lubricating Grease Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
ASTM D5707-2005 中，可能用到以下仪器设备
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- 标准号
- ASTM D5707-2005
- 发布日期
- 2005年
- 实施日期
- 废止日期
- 无
- 中国标准分类号
- E34
- 国际标准分类号
- 75.100 (Lubricants, industrial oils and related pr
- 发布单位
- US-ASTM
- 适用范围
This test method can be used to determine wear properties and coefficient of friction of lubricating greases at selected temperatures and loads specified for use in applications where high-speed vibrational or start-stop motions are present for extended periods of time under initial high Hertzian point contact pressures. This test method has found application in qualifying lubricating greases used in constant velocity joints of front-wheel-drive automobiles and for lubricating greases used in roller bearings. Users of this test method should determine whether results correlate with field performance or other applications.
1.1 This test method covers a procedure for determining a lubricating grease's coefficient of friction and its ability to protect against wear when subjected to high-frequency, linear-oscillation motion using an SRV test machine at a test load of 200 N, frequency of 50 Hz, stroke amplitude of 1.00 mm, duration of 2 h, and temperature within the range of the test machine, specifically, ambient to 280C. Other test loads (10 to 1200 N for SRVI-model, 10 to 1400 N for SRVII-model, and 10 to 2000 N for SRVIII-model), frequencies (5 to 500 Hz) and stroke amplitudes (0.1 up to 4.0 mm) can be used, if specified. The precision of this test method is based on the stated parameters and test temperatures of 50 and 80C. Average wear scar dimensions on ball and coefficient of friction are determined and reported.
Optimol Instruments supplies an upgrade kit to allow SRVI/II-machines to operate with 1600 N, if needed.
1.2 This test method can also be used for determining a fluid lubricant's ability to protect against wear and its coefficient of friction under similar test conditions.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.