Technical Drawing
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PWTR - Track Roller
Grinded thrust rings which, along with ZRS seals forced on the outer ring, guarantee an extremely efficient protection system. One of 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 rollers obtained entirely on the outer ring and accurately grinded in order to allow the roller to bear loads with axial components. Usually, the ring is 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, rollers with cylindrical outer surface can be supplied.
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 outer ring, which is suitable to bear high specific pressures and the impacts deriving form the use of these bearings as pressure rollers, cam followers, conveyor belt rollers, bearings for fork lift masts. It differs from NUTR series as far as the characteristics of the seals are concerned, as they are of ZRS type (steel and rubber).
C.R. Special Profile
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
Max speed
RPM min-
6000
5000
6000
5000
3800
3800
3800
3800
2200
2200
1800
1800
1500
1300
1500
1100
1300
1100
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
11,6
13,2
13,5
14,8
23,2
25,5
24,2
29
35
41
38,5
43,5
44,5
45
52
45,5
56
59
Cow
KN
11,3
13,8
14,1
16,4
25,5
29,5
28
36
39,5
49
46,5
55
53
55
66
57
74
82
C.R. Rif.
PWTR 15 2RS
PWTR 17 2RS
PWTR 15 42 2RS
PWTR 17 47 2RS
PWTR 20 2RS
PWTR 20 52 2RS
PWTR 25 2RS
PWTR 25 62 2RS
PWTR 30 2RS
PWTR 30 72 2RS
PWTR 35 2RS
PWTR 35 80 2RS
PWTR 40 2RS
PWTR 45 2RS
PWTR 40 90 2RS
PWTR 50 2RS
PWTR 45 100 2RS
PWTR 50 110 2RS
1. Zrs seal ring
2. Support thrust ring
3. Outer ring
4. Cylindrical rollers
5. Inner ring
6. Support thrust ring
7. Zrs seal ring
C.R. s.r.l. -
