SKF Stud Type Track Rollers
Cam followers of the KR design are fitted with needle rollers and have a thick outer ring making them suitable for shock loads.
Concentric cam follower
The outer ring is guided via the integral flange at the head of the stud and the pressed on side washer
SKF Cam followers on the PPA design have axial slide rings of polyamide 66
These slide rings reduce the friction and give relatively cool operation that is advantageous for the grease service life
In the radial direction the slide ring forms a narrow gap to the outer ring that protects against course contaminations
Operating temperature range is -30 to +100°C
The PPA design has an improved profile of the runner surface which gives a better stress distribution, also under misaligned conditions
The PPA design has a crowned running surface
Supplied with grease nipples
Lubrication can be done at the Head or thread end, except KR 16 & 19 which can only be lubricated at the head
Dimensions
Bearing Reference
Length (mm) B
Roller Outside Diameter (mm) D
Roller Length (mm) C
Stud Diameter (mm) d
Stud Length (mm) B
1
Stock no.
KR16-PPA
28
16
11
6
16
514-180
KR19-PPA
32
19
11
8
20
514-203
KR22-PPA
36
22
12
10
23
514-192
KR26-PPA
36
26
12
10
23
513-834
KR30-PPA
40
30
14
12
25
513-824
KR32-PPA
40
32
14
12
25
513-828
KR35-PPA
52
35
18
16
32.5
514-215
KR40-PPA
58
40
20
18
36.5
514-219
KR47-PPA
66
47
24
20
40.5
514-209
KR52-PPA
66
52
24
20
40.5
514-041
KR62-PPA
80
62
29
24
49.5
513-979
KR72-PPA
80
72
29
24
49.5
513-953
KR80-PPA
100
80
35
30
63
514-045
KR90-PPA
100
90
35
30
63
513-957