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High Precision Bearings > XR/JXR Series 

Identification number
Main dimensions (mm)
Basic dynamic load rating
Speed Limitied
weight
　
d
D
T
r
Radial
Axial
Oil
kg
XR496051
203.2
279.4
31.75
1.5
41000
49200
800
6.5
XR678052
330.2
457.2
63.5
3
80000
98400
620
35
XR766051
457.2
609.6
63.5
3
106000
133000
520
51
XR820060
580
760
80
5
106000
209000
300
100
XR855053
685.8
914.4
79.375
3
180000
224000
260
150
XR882055
901.7
1117.6
82.55
3
225000
297000
200
185
XR889058
1028.7
1327.15
114.3
3
283000
374000
160
400
XR897051
1549.4
1828.8
101.6
3
326000
489000
80
500
JXR637050
300
400
37
1.5
47200
60000
720
13
JXR652050
310
425
45
2.5
61600
76500
640
20
JXR699050
370
495
50
3
70200
89200
600
30

Identification number corresponding table 

Boundary dimensions
Identification number
(mm)
d
D
B
r
Timken
SKF
NACHI
URB
150
230
30
1
　
BFKB353243/HA4
　
　
160
240
30
1.1
　
BFKB353240/HA4
　
　
200
280
30
1.5
　
　
200XRN28
　
203.2
279
31.75
1.5
XR496051
616093A
　
　
203.2
279
31.75
1.5
XR496052
　
　
　
240
300
30
1
　
BFKB353203/HA4
　
　
250
310
25
1
　
BFKB353212/HA4
　
　
250
350
40
1.3
　
BFKB353215/HA4
250XRN35
　
300
400
36.492
1.5
JXR637050
　
　
　
300
400
37
1.5
XR637050
616094A
300XRN50
　
300
480
60
1.5
JXR678054
　
　
　
310
425
45
2.5
JXR652050
BFKB634097
　
　
330
457
63.5
3.3
XR678052
615661A
　
　
350
470
50
3.3
　
BFKB353216/HA4
350XRN47
　
370
495
50
3.3
JXR699050
　
　
　
400
480
40
1.1
　
BFKB353224/HA4
　
　
400
550
60
2.5
　
BFKB353219/HA4
400XRN55
　
432.03
571.5
38.1
3.3
XR736052
　
　
　
457.2
609.6
63.5
3.3
XR766051
615894A
0457XRN060
XD.10.0457P5
424.95
614.924
65
　
XR766052
　
　
　
580
760
80
3.3
XR820060
615662A
580XRN76
XD.10.0580P5
580
760
80
6.4
XR820061
　
　
　
600
830
80
6.4
XR836050
　
600XRN83
　
685.8
914.4
79.375
6.4
XRA844050
　
　
　
685.8
914.4
79.375
3.3
XR855053
615659A
0685XRN091
XD.10.0686P5
685.8
914.4
79.375
　
XR855056
　
　
　
901.7
1117.6
82.555
3.3
XR882054
　
　
　
901.7
1117.6
82.555
3.3
XR882055
615895A
0901XRN112
XD.10.0902P5
939.8
1117.6
82.55
3.3
XR882058
　
　
　
950
1170
85
3
　
BFKB353251/HA4
　
　
1028.7
1327.15
114.3
3.3
XR889058
BFKB353282/HA4
1028XRN132
XD.10.1029P5
1028.7
1327.15
95.25
3.3
XR889059
　
　
　
1028.7
1327.15
114.3
3.3
XR889060
　
　
　
1270
1524
95.25
1.8
　
615897A
　
　
1549.4
1828.8
101.6
3.3
XR897051
615898A
　
XD.10.1549P5
1879.6
2197.1
101.6
5.4
XR903054
615899A
　
XD.10.1880P5
2463.8
2819.4
114.3
5.4
　
634078A
　
　
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