Type
|
Tensile Strength/ MPa
|
Breaking elongation/ %
|
Abrasion loss/ mm3
|
LO
|
≥14.0
|
≥350
|
≤200
|
DO
|
≥16.0
|
≥350
|
≤160
|
Note:LO-used in general oily working conditions.DO-used in high abrasion & oily working conditions.
|
Serial number
|
Test conditions of soak liquid
|
Volume change rate/% ≤
|
|||
Oil number in GB/T1690
|
Soak temperature/℃
|
Soak time/h
|
LO
|
DO
|
|
1
|
#2 oil
|
70±2
|
70+0/-1
|
+20
|
-5
|
2
|
#3 oil
|
70±2
|
70+0/-1
|
+50
|
+5
|
3
|
#3 oil
|
100±2
|
22±0.25
|
+50
|
+5
|
Note:You only need to choose one of the above three methods.
|