This standard is applicable to determination of PV limit of dry friction and oil lubrication of plastic sliding bearing and the sliding bearing with plastic cladding.
1 Terms and definitions
1.1 PV value of plastic bearing
the product of plastic bearing pressure and the sliding linear velocity relative to bearing surface
1.2 PV limit of plastic bearing
at a certain sliding velocity, the pressure that the plastic bearing can bear has a certain limit value, and the product of the limit pressure (p) and the sliding linear velocity (v) is called PV limit of plastic bearings
2 Sample
2.1 The sample is a friction pair composed of plastic bearing and steel shaft sleeve. See Figure 1. See Figures 2 and 3 for the dimension of plastic bearing and steel shaft sleeve.
1 Terms and definitions 2 Sample 3 Instruments 4 Conditioning and test environment 5 Test procedures 6 Calculation of results 7 Test report Additional information:
Standard
GB 7948-1987 Test method for PV limit of plastics bearings (English Version)
This standard is applicable to determination of PV limit of dry friction and oil lubrication of plastic sliding bearing and the sliding bearing with plastic cladding.
1 Terms and definitions
1.1 PV value of plastic bearing
the product of plastic bearing pressure and the sliding linear velocity relative to bearing surface
1.2 PV limit of plastic bearing
at a certain sliding velocity, the pressure that the plastic bearing can bear has a certain limit value, and the product of the limit pressure (p) and the sliding linear velocity (v) is called PV limit of plastic bearings
2 Sample
2.1 The sample is a friction pair composed of plastic bearing and steel shaft sleeve. See Figure 1. See Figures 2 and 3 for the dimension of plastic bearing and steel shaft sleeve.
Contents of GB 7948-1987
1 Terms and definitions
2 Sample
3 Instruments
4 Conditioning and test environment
5 Test procedures
6 Calculation of results
7 Test report
Additional information:
