Technical Drawing
Exploded View
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NUTR - Track Roller
Grinded thrust rings, which form a labyrinth protection system, along with steel sealing sheets forced on the outer ring. One of the lateral thrust rings can be a closed thrust ring, to allow the fixing of the rollers at the edge of the shaft.
Full-
Tolerance of execution according to normal class, possibility of special execution according to class P5 (DIN 620).
Other important features of these bearings are:
Outer ring with double border of the rollers obtained entirely and accurately grinded to allow the roller to bear loads with axial components. The ring is usually cambered on the outer part, in order to improve working condition with heavy loads and to prevent the concentration of load onto side bands of the raceway. On request, C.R. can supply rollers with cylindrical outer surface.
Inner ring with holes and channels for the inflow of lubricants.
Technical Characteristics
The main characteristic of this series of rollers is the high thickness of the outer ring, which is suitable to bear high specific pressures and the thrusts deriving form the use of these bearings as pressure rollers, cam followers, conveyor belt rollers, bearings for fork lift masts.
Cw : Dynamic load
COW : Static load
D
mm
35
40
42
47
47
52
52
62
62
72
72
80
80
85
90
90
100
110
Vel. max
RPM min-
6500
5500
6500
5500
4200
4200
3400
3400
2600
2600
2100
2100
1600
1400
1600
1300
1400
1300
d
mm
15
17
15
17
20
20
25
25
30
30
35
35
40
45
40
50
45
50
C
mm
18
20
18
20
24
24
24
24
28
28
28
28
30
30
30
30
30
30
B
mm
19
21
19
21
25
25
25
25
29
29
29
29
32
32
32
32
32
32
r min.
mm
0,6
1
0,6
1
1
1
1
1
1
1
1,1
1,1
1,1
1,1
1,1
1,1
1,1
1,1
d1
mm
20
22
20
22
27
27
31
31
38
38
44
44
51
55
51
60
55
60
r1 min.
mm
0,3
0,5
0,3
0,5
0,5
0,5
0,5
0,5
0,5
0,5
0,6
0,6
0,6
0,6
0,6
0,6
0,6
0,6
Cw
KN
15
18,4
18,1
21,3
28
31,5
29
35,5
40
47,5
44,5
51
55
56
66
57
71
76
Cow
KN
16,8
22,6
21,9
28
35
41
37,5
50
50
64
60
72
75
78
95
81
107
120
C.R. Rif.
NUTR 15
NUTR 17
NUTR 15 42
NUTR 17 47
NUTR 20
NUTR 20 52
NUTR 25
NUTR 25 62
NUTR 30
NUTR 30 72
NUTR 35
NUTR 35 80
NUTR 40
NUTR 45
NUTR 40 90
NUTR 50
NUTR 45 100
NUTR 50 110
1. Seal sheet
2. Support thrust ring
3. Outer ring
4. Cylindrical rollers
5. Inner ring
6. Support thrust ring
7. Seal sheet
C.R. s.r.l. -
