SNL plummer block housings solve the housing problems

1 Product information 2 Recommendations 3 Product data
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Page ............. 3 Standard seals Page ............. 46
Permissible shaft speeds for contact
seals
Table
2
2
C design A design G design
felt seals V-ring seals double-lip seals
Shaft Guideline values for the permissible shaft speed 1)
diameter for standard seals of design
d a , d b C 2) A G
mm
r/min
20 3 820 6 680 7 640
25 3 060 5 350 6 110
30 2 550 4 460 5 090
35 2 180 3 820 4 360
40 1 910 3 340 3 820
45 1 700 2 970 3 390
50 1 530 2 670 3 060
55 1 390 2 430 2 780
60 1 270 2 230 2 550
65 1 180 2 060 2 350
70 1 090 1 910 2 180
75 1 020 1 780 2 040
80 960 1 670 1 910
85 900 1 570 1 800
90 850 1 490 1 700
95 800 1 410 1 610
100 760 1 340 1 530
110 690 1 220 1 390
115 660 1 160 1 330
120 640 1 110 1 270
125 610 1 070 1 220
130 590 1 030 1 180
135 570 990 1 130
140 550 960 1 090
145 530 920 1 050
150 510 890 1 020
155 490 860 990
160 480 840 960
165 460 810 930
170 450 790 900
The speeds are valid when the seals are operated at temperatures between −40 and
+100 °C (permissible temperature range). At temperatures outside this range and/or
at speeds higher than those given, labyrinth seals should be used.
1) The guideline values are based on the permissible sliding speed at the seal/counterface contact. However,
the permissible shaft speed is determined by the speed rating for the bearing to be used in the housing
2) The guideline values are based on a peripheral speed of 4 m/s. Higher speeds are possible,
see under “Felt ring seals”
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