Technical Drawing
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Needle bearings with entire borders
Lubrication is made through one groove and hole on the outer ring.
The inner ring allows an axial shifting.
The bearings can be supplied with RS seals on request.
Needle bearings with inner ring are used when the shaft cannot act as rolling raceway.
Needle bearings with entire borders have the following characteristics:
Outer ring and inner ring are manufactured in core-
The cages are in moulded sheet.
Technical Characteristics
Massive needle bearings with entire borders obtained on the outer ring form a unique body that cannot be disassembled, as the outer ring, the cages and the needle rollers cannot be disassembled.
These bearings have very small dimensions but a great load capacity. The bearings are available with inner ring or without inner ring. Needle bearings without inner ring are used in plants whose project foresees a grinded and tempered shaft that acts as rolling raceway.
Cw : Dynamic load
COW : Static load
F
mm
120
130
145
155
165
175
185
195
210
220
240
265
285
305
330
350
370
390
415
d
mm
110
120
130
140
150
160
170
180
190
200
220
240
260
280
300
320
340
360
380
B
mm
30
30
35
35
40
40
45
45
50
50
50
60
60
69
80
80
80
80
100
D
mm
140
150
165
175
190
200
215
225
240
250
270
300
320
350
380
400
420
440
480
r1 min.
mm
1
1
1,1
1,1
1,1
1,1
1,1
1,1
1,5
1,5
1,5
2
2
2
2,1
2,1
2,1
2,1
2,1
Cw
KN
106
112
134
136
172
181
209
219
255
260
275
400
415
510
700
710
730
740
1130
Max speed
RPM min-
3900
3150
3300
3100
2900
2700
2550
2420
2280
2180
2000
1810
1690
1560
1440
1360
1290
1230
1140
s
mm
0,8
0,8
1
1
1,5
1,5
1,5
1,5
1,5
1,5
1,5
2
2
2,5
2
2
2
2
2
Cow
KN
216
239
310
325
400
435
510
550
690
720
790
1080
1160
1300
1770
1850
1940
2020
2900
C.R. Rif.
NA 4822
NA 4824
NA 4826
NA 4828
NA 4830
NA 4832
NA 4834
NA 4836
NA 4838
NA 4840
NA 4844
NA 4848
NA 4852
NA 4856
NA 4860
NA 4864
NA 4868
NA 4872
NA 4876
1. Outer ring
2. Needle rollers
3. Cage
4. Inner ring
C.R. s.r.l. -
