SKF - Industrial Shaft Seals

Radial shaft seals
Diagram 5
Permissible speeds for spring-loaded sealing lips where no pressure differential exists across seal in operation
For permissible speeds for seals at shaft diameters > 200 mm, refer to seal selection chart starting on page 92.
Circumferential speed [m/s (ft/min)]
Rotational speed [1 000 r/min]
40
15,0 10,0 9,0 8,0 7,0 6,0 5,0 4,5 4,0
(7 874)
Fluoro rubber
3,5
35
(6 890)
30
(5 906)
3,0
25
(4 921)
20
(3 937)
2,5
Polyacrylate elastomer
2,0
15
(2 953)
10
(1 969)
1,5
Nitrile rubber
1,0
5
(984)
0,5
0
0 20 40 60 80 100 120 140 160 180 200
(0.787) (1.575) (2.362) (3.150) (3.937) (4.724) (5.512) (6.299) (7.087) (7.874)
Shaft diameter [mm (in.)]
Source: DIN standard 3760
64