IN'S Linear Ball Bearing
　 　 Flanged Slide Bearing
　 　
SMF 　 SMK
SMT 　 KBF
KBK 　 SWF
SWK 　 SMF-W
SMK-W 　 KBF-W
KBK-W 　 SMT-W
SMFC/SMKC
KBFC/KBKC
SWFC/SWKC
SMF-E/SMK-E
SMF-W-E/SMK-W-E
SMTC 　 SMT-E
SMT-W-E
　 　 Super Linear Ball Bearing
　 　 IN'S Linear Ball Bearing System Case Unit
　 　 IN'S Linear Ball Bearing System Support Rail Unit
　 　 IN'S Linear Ball Bearing System Shaft Support
　 　 IN'S Linear Ball Bearing System SM Shaft
　 　 IN'S Linear Ball Bearing System Interchangeability list
　 　 IN'S Linear Ball Bearing System Tolerances for inside diameter of housing
　 　 　 　
　

Nominal Shaft Diameter (Inch/mm) Nominal Part No.
Major Dimensions and Tolerance
(mm)
Eccen
tricity
μm
Squar
eness
μm
Basic Load Rating
Dynamic    Static
CN   CoN
 Nominal
shaft
diameter

Inch/μm
Steel Retainer

Resin Retainer		 Ball Circuit  
Weight
    g
Dr
         Tolerance
D
         Tolerance
L
    
Tolerance
Flange
Df
t
DP
X
Y
Z
1/4
6.350		 SWF 4  
SWF 4G		 4    32 .2500
6.350		 .5000      0
12.700 -.00050
                0
               -13		 .7500
19.050		 1.2500
31.750		 0.219
5.556		 .8750
22.225		 .1560
3.969		 .2500
6.350		 .1410
3.572		 .0005
12		 .0005
  12		 206  265 1/4
6.350
3/8
9.525		 SWF 6
SWF 6G		 4    47 .3750       0
9.525  -.00040		 .6250
15.875     0		 .8750
22.225		 1.5000
38.100		 .2500
6.350		 1.0620
26.988		 .1875
4.763		 .2970
7.541		 .1720
4.366		 .0005
  12		 .0005
  12		 225  314 3/8
9.525
1/2
12.700		 SWF 8
SWF 8G		 4    88 .5000        0
12.700 -0.009		 .8750 -.00065
22.225    0		 1.2500
31.750		 1.7500
44.450		 .2500
6.350		 1.312
33.338		 .1875
4.763		 .2970
7.541		 .1720
4.366		 .0005
  12		 .0005
  12		 510  784 1/2
12.700
5/8
15.875		 SWF 10
SWF 10G		 4  140 .6250
15.875		 1.1250 -0.016
28.575		 1.5000
38.100		 2.0000
50.800		 .2500
6.350		 1.5620
39.688		 .1875
4.763		 .2970
7.541		 .1720
4.366		 .0005
  12		 .0005
  12		 774  1,180 5/8
15.875
3/4
19.050		 SWF 12
SWF 12G		 4  190 .7500        0
19.050 -.00040		 1.2500         0
31.750 -.00075		 1.6250
41.275 ±.012		 2.1875
55.563		 .3125
7.938		 1.7180
43.660		 .2187
5.556		 .3440
8.731		 .2030
5.159		 .0006
  15		 .0006
  15		 862  1,370 3/4
19.050
1
25.400		 SWF 16
SWF 16G		 5  325 1.0000     0
25.400 -0.01		 1.5625       0
39.688 -0.019		 2.2500
57.150 ±0.3		 2.5000
63.500		 .3125
7.938		 2.0310
51.594		 .2187
5.556		 .3440
8.731		 .2030
5.159		 .0006
  15		 .0006
  15		 980  1,570 1
25.400
1-1/4
31.750		 SWF 20
SWF 20G		 5  665 1.2500
31.750   0		 2.0000       0
50.800 -.0009		 2.6250
66.675		 3.1250
79.375		 .3750
9.525		 2.5625
65.088		 .2812
7.144		 .4060
10.319		 .2656
6.747		 .0008
 20		 .0008
 20		 1,570 2,740 1-1/4
31.750
1-1/2
38.100		 SWF 24
SWF 24G		 6 1,100 1.5000 -.00050
38.100      0		 2.3750       0
60.325 -0.022		 3.0000
76.200		 3.7500
95.250		 .5000
12.700		 3.0625
77.788		 .3440
8.731		 .5000
12.700		 .3280
8.334		 .0010
 25		 .0010
 25		 2,180 4,020 1-1/2
38.100
2
50.800		 SWF 32
SWF 32G		 6 1,760 2.0000 -0.012
50.800		 3.0000
76.200  0		 4.0000
101.600		 4.3750
111.125		 .5000
12.700		 3.6875
93.662		 .3440
8.731		 .5000
12.700		 .3280
8.334		 .0010
 25		 .0010
 25		 3,820 7,940 2
50.800
2-1/2
63.500		 SWF 40
SWF 40G		 6 3,570 2.5000     0
63.500 -.00060		 3.7500 -.00100
95.250  0		 5.0000
127.000		 5.3750
136.525		 .7500
19.050		 4.5625
115.887		 .4062
10.319		 .6250
15.875		 .3750
9.525		 .0010
 25		 .0010
 25		 4,700 10,000 2-1/2
63.500
3
76.200		 SWF 48
SWF 48G		 6 5,600 3.0000      0
76.200 -0.015		 4.5000  -0.025
114.300		 6.0000
152.400		 6.1250
155.575		 .7500
19.050		 5.3125
134.937		 .4062
10.319		 .6250
15.875		 .3750
9.525		 .0010
 25		 .0010
 25		 7,350 16,000 3
76.200
4
101.600		 SWF 64
SWF 64G		 6 12,000 4.000         0
101.600 -.00080
                  0
              -0.020		 6.0000       0
152.400 -.00115
                  0
              -0.029		 8.0000
203.200		 8.0000
203.200		 .8750
22.225		 7.0000
177.800		 .5000
12.700		 .7125
18.097		 .5000
12.700		 .0012
30		 .0012
30		 14,100 34,800 4
101.600
SI Unit 1N＝0.225 lbs   
1kg=2.205 lbs   
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