21270Radial shaft seal with double metal case, SKF Wave lip and auxiliary, non-contacting lip, for oil or grease
Radial shaft seals are used between rotating and stationary machine components, or between components in relative motion. CRWHA1 seals are designed with a double metal case, an SKF WAVE lip made of elastomer with a higher pumping rate to reduce heat generation, a garter spring to optimize sealing against the shaft, and a dust lip to improve contamination exclusion. Most of the seals feature the SKF Bore Tite coating on the outside diameter that helps fill small imperfections in the housing bore.
| Type of outside diameter |
Metal-cased with sealant coating on the outside diameter
|
| Lip material |
Silicone rubber (MVQ)
|
| Seal design |
CRWHA1
|
Dimensions
| d1 |
53.975 mm
|
Shaft diameter |
|---|---|---|
| D |
81.001 mm
|
Housing bore diameter |
| b |
11.91 mm
|
Seal width |
Application and operating conditions
| Operating temperature |
min. -70 °C
|
| Operating temperature |
max. 160 °C
|
| Circumferential speed |
max. 26.05 m/s
|
| Rotational speed |
max. 5 000 r/min
|
| Pressure differential |
0.07 N/mm²
|
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