INSTALLATION AND MAINTENANCE

A better experience will be achieved with the proper use of the product.

The rigidity of the base, the flatness of the installation surface and the dimensional tolerance of the shaft are inspected if they are qualified.

The tolerances recommendation for mounted shaft

Shaft Diameter

UC,SB Series
Shaft tolerances recommendation (h7)

mm
in
 μm
in
>

>

max
min
max
min
10
18
7/16
11/16
0
-18
0
-0.0007
18
30
3/4
1-1/8
0
-21
0
-0.0008
30
50
1-3/16
1-15/16
0
-250
-0.0010
50
80
2
3-1/8
0
-300
-0.0012
80
120
3-3/16
4-11/16
0
-350
-0.0014
120
180
4-3/4
7-1/16
0
-400
-0.0016

The mounted ball bearing unit is inserted into the shaft, under the fixed position.

Tighten the mounting bolts of the bearing housings with the torque wrench according to the specified locking torque.

The locking torque recommendation for mounted bolts of bearing housings

Bolt Specification

 Locking torque
(±10%)
mm
in
N.m
lbf.in
lbf.ft
M6
1/4
4.0
33
3
M8
5/16
8.0
71
6
M10
3/8
17
151
13
M12
7/16
29
257
21
M14
1/2
47
416
35
M16
5/8
73
646
54
M18
-
107
947
79
M20
3/4
145
1280
107
M22
7/8
200
1770
148
M27
1
372
3290
275
M30
1-1/8
500
4430
369
M33
1-1/4
690
6110
509
M36
1-3/8
880
7790
649

Note: apply to P, F, FS, FL, FC, FT, FA, FB, LF, FD bearing housings

Equally tighten the set screws of the bearing inner ring according to the specified locking torque

The locking torque recommendation for set screws

Set screw specification

 Locking torque

Applicable model

mm
inN.m
lbf.in
lbf.ft
UC200
UCX00
SB200
UC300
M5×0.8
10-32UNF
3.0272.2201-203
(SΦ40)

201-203

M6×1.0
1/4-28UNF
4.0353201-206X05204-206305-306
M8×1.0
5/16-24UNF9756207-209X06-X08207-211307
M10×1.25
3/8-24UNF
1815513210-213X09-X12212308-309
M12×1.5
7/16-20UNF
2824821214-218X13-X17
310-314
M14×1.5
1/2-20UNF
3531026
X18
315-316
M16×1.5
5/8-18UNF
5649641220X20
317-319
M18×1.5
5/8-18UNF
6254946


320-324
M20×1.5
3/4-16UNF
8373561


326-328

Turn the shaft manually to ensure the bearing rotation bearing is normal.