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Unit : min-1
High-speed blowers (S5) Max RPM rating
SIZE CODE Diameter series
2 X 3
01 8700    
02 8700    
03 8700    
04 8700 - -
05 7700 6400 6700
06 6400 5500 5800
07 5500 5000 5100
08 5000 4600 4600
09 4600 4300 4100
10 4300 3800 3700
11 3800 3500 3400
12 3500 3200 3100
13 3200 3100 2900
14 3100 2900 2700
15 2900 2700 2600
16 2700 2600 2400
17 2600 2400 2300
18 2400 2300 2100
19 - - 2000
20   2000 1900
21   - 1800
22     1700
24     1600
26     1500
28     1400
Type of ball
bearing units

Fitting factor fc (recommended)

Shaft tolerance range class
h5 , j5 j6 h6 h7 h8 h9
For blower
(special code:S3 or S5)
1 - 0.8  0.6 -  -