RSB4-13000-AD2Hydraulic buffer seal, with slide ring and energizer
These hydraulic buffer seals consist of a PTFE slide ring and a nitrile rubber energizer that keeps the slide ring in its proper position against the rod seal side of the housing. This design ensures that the buffer seal is positioned to handle any pressure spikes that might occur in the hydraulic cylinder. On request, for the most demanding applications of large equipment, SKF can manufacture these with polyamide slide rings for additional extrusion and wear resistance.
Dimensions
| d |
330.2 mm
|
Rod diameter |
|---|---|---|
| D |
351.28 mm
|
Housing groove diameter |
| L |
8.13 mm
|
Housing groove width |
| S |
10.54 mm
|
Radial depth |
| R |
max. 0.89 mm
|
Groove radius |
| C |
min. 7.92 mm
|
Lead-in chamfer length |
| tol d |
0 mm
|
Upper limit deviation |
|---|---|---|
|
-0.13 mm
|
Lower limit deviation | |
| tol D |
0.15 mm
|
Upper limit deviation |
|
0 mm
|
Lower limit deviation | |
| tol L |
0.254 mm
|
Upper limit deviation |
|
0 mm
|
Lower limit deviation |
Maximum extrusion gap
| Reference temperature for extrusion gap |
80 °C
|
|
| Extrusion gap at 160 bar | e |
0.51 mm
|
| Extrusion gap at 250 bar | e |
0.36 mm
|
| Extrusion gap at 400 bar | e |
0.25 mm
|
Pressure and speed
| Pressure |
max. 400 bar
|
| Speed |
max. 1 m/s
|
Operating temperature
| T6 |
120 °C
|
Extreme upper temperature limit |
|---|---|---|
| T5 |
110 °C
|
Reduced performance upper temperature limit |
| T4 |
100 °C
|
Upper operating temperature limit |
| T3 |
-50 °C
|
Lower operating temperature limit |
| T2 |
-55 °C
|
Reduced performance lower temperature limit |
| T1 |
-60 °C
|
Extreme lower temperature limit |
|
Maximum values of application parameters (e.g. pressure, speed, temperature) should not be applied continuously nor simultaneously.
|
||
Materials
| Primary sealing element |
Polytetrafluoroethylene (PTFE 741)
|
| Additional element |
Nitrile Rubber (NBR A-8504)
|
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