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KR

Cam follower (stud-type track roller) are designed to run on and to be used in cam drives, bed ways, conveyor systems, linear guidance systems, etc. They are based on a needle roller bearing with a threaded solid stud instead of an inner ring. They have a thick-walled outer ring with a crowned running surface and are supplied ready-to-mount. A narrow gap between the outer ring and the adjacent components forms a gap-type seal. The bearings can be relubricated via the stud.

They are available in several designs and variants:

  • with cage or without cage (full complement needle roller)
  • concentric stud or with an eccentric collar
  • with crowned or cylindrical outer running surface
  • gap seals or three-stage sealing by plastic axial plain washers
  • without coating or with corrosion resistance special coating

PRODUCT FILTERS AND TABLE

Roller diameter (mm)

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Stud diameter (mm)

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Overall width (mm)

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Outer ring width (mm)

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Outer ring profile
Crowned
Cylindrical
Roller guide
Cage
Full complement roller
Stud type
Centric
Centric stud with eccentric collar
Eccentric
Heavy duty,Centric
Sealing type
Gap type
Axial plain washer
Labyrinth
Lip
Designation

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Toggle ： Metric Imperial   Sort By :
Designation Stud diameter Overall width Outside diameter Outer ring width Thread stud Thread length Maximum dynamic radial load Maximum static radial load
d B D C G G1 Fr F0r
mm
mm
mm
mm
mm
kN
kN
KR 10 3 17 10 7 M3 x 0.5 5 1.32 0.56
KR 10 PP 3 17 10 7 M3 x 0.5 5 1.32 0.56
KR 10 X 3 17 10 7 M3 x 0.5 5 1.32 0.56
KR 10 PPX 3 17 10 7 M3 x 0.5 5 1.32 0.56
KRV 10 3 17 10 7 M3 x 0.5 5 1.32 0.56
KRV 10 PP 3 17 10 7 M3 x 0.5 5 1.32 0.56
KRV 10 X 3 17 10 7 M3 x 0.5 5 1.32 0.56
KRV 10 PPX 3 17 10 7 M3 x 0.5 5 1.32 0.56
KR 12 4 20 12 8 M4 x 0.7 6 1.86 0.725
KR 12 PP 4 20 12 8 M4 x 0.7 6 1.86 0.725
KR 12 X 4 20 12 8 M4 x 0.7 6 1.86 0.725
KR 12 PPX 4 20 12 8 M4 x 0.7 6 1.86 0.725
KRV 12 4 20 12 8 M4 x 0.7 6 1.86 0.725
KRV 12 PP 4 20 12 8 M4 x 0.7 6 1.86 0.725
KRV 12 X 4 20 12 8 M4 x 0.7 6 1.86 0.725
KRV 12 PPX 4 20 12 8 M4 x 0.7 6 1.86 0.725
KR 13 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KR 13 PP 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KR 13 X 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KR 13 PPX 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 PP 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 X 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 PPX 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 SL 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 PP SL 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 X SL 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KRV 13 PPX SL 5 23 13 9 M5 x 0.8 7.5 2.06 1.65
KR 16 6 28 16 11 M6 x 1 8 3.15 3.3
KR 16 PP 6 28 16 11 M6 x 1 8 3.15 3.3
KR 10
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KR 10 PP
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KR 10 X
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KR 10 PPX
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KRV 10
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KRV 10 PP
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KRV 10 X
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KRV 10 PPX
d Stud diameter 3 mm
B Overall width 17 mm
D Outside diameter 10 mm
C Outer ring width 7 mm
G Thread stud M3 x 0.5
G1 Thread length 5 mm
Fr Maximum dynamic radial load 1.32 kN
F0r Maximum static radial load 0.56 kN
KR 12
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KR 12 PP
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KR 12 X
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KR 12 PPX
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KRV 12
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KRV 12 PP
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KRV 12 X
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KRV 12 PPX
d Stud diameter 4 mm
B Overall width 20 mm
D Outside diameter 12 mm
C Outer ring width 8 mm
G Thread stud M4 x 0.7
G1 Thread length 6 mm
Fr Maximum dynamic radial load 1.86 kN
F0r Maximum static radial load 0.725 kN
KR 13
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KR 13 PP
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KR 13 X
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KR 13 PPX
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 PP
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 X
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 PPX
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 SL
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 PP SL
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 X SL
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KRV 13 PPX SL
d Stud diameter 5 mm
B Overall width 23 mm
D Outside diameter 13 mm
C Outer ring width 9 mm
G Thread stud M5 x 0.8
G1 Thread length 7.5 mm
Fr Maximum dynamic radial load 2.06 kN
F0r Maximum static radial load 1.65 kN
KR 16
d Stud diameter 6 mm
B Overall width 28 mm
D Outside diameter 16 mm
C Outer ring width 11 mm
G Thread stud M6 x 1
G1 Thread length 8 mm
Fr Maximum dynamic radial load 3.15 kN
F0r Maximum static radial load 3.3 kN
KR 16 PP
d Stud diameter 6 mm
B Overall width 28 mm
D Outside diameter 16 mm
C Outer ring width 11 mm
G Thread stud M6 x 1
G1 Thread length 8 mm
Fr Maximum dynamic radial load 3.15 kN
F0r Maximum static radial load 3.3 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
3 mm
Overall width
B
17 mm
Outside diameter
D
10 mm
Outer ring width
C
7 mm
Thread stud
G
M3 x 0.5
Thread length
G1
5 mm
Maximum dynamic radial load
Fr
1.32 kN
Maximum static radial load
F0r
0.56 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
4 mm
Overall width
B
20 mm
Outside diameter
D
12 mm
Outer ring width
C
8 mm
Thread stud
G
M4 x 0.7
Thread length
G1
6 mm
Maximum dynamic radial load
Fr
1.86 kN
Maximum static radial load
F0r
0.725 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
5 mm
Overall width
B
23 mm
Outside diameter
D
13 mm
Outer ring width
C
9 mm
Thread stud
G
M5 x 0.8
Thread length
G1
7.5 mm
Maximum dynamic radial load
Fr
2.06 kN
Maximum static radial load
F0r
1.65 kN
Stud diameter
d
6 mm
Overall width
B
28 mm
Outside diameter
D
16 mm
Outer ring width
C
11 mm
Thread stud
G
M6 x 1
Thread length
G1
8 mm
Maximum dynamic radial load
Fr
3.15 kN
Maximum static radial load
F0r
3.3 kN
Stud diameter
d
6 mm
Overall width
B
28 mm
Outside diameter
D
16 mm
Outer ring width
C
11 mm
Thread stud
G
M6 x 1
Thread length
G1
8 mm
Maximum dynamic radial load
Fr
3.15 kN
Maximum static radial load
F0r
3.3 kN
Designations

Designations of KR series cam followers

KR V E 19 PP SK X SS RR
1 2 3 4 5 6 7 8 9
1. Cam followers series: KR
2. Roller guide: With cage – remove prefix “V”; Full complement roller – add prefix “V”
3. Stud adjustable: Centric – remove prefix “E”; Centric stud with eccentric collar – add prefix “E”; Eccentric stud – add prefix “H”
4. Roller size:  this data is outside dimeter 
5. Sealing type: Without plastic axial plain washers – remove suffix “PP”; With plastic axial plain washers – add suffix “PP”
6. Mounting hole: Hex socket – blank or suffix “SK”; Screwdrive slot – suffix “SL”
7. Profile outer ring: Crowned-blank; Cylindrica l- suffix “X”
8. Material: High Carbon chrome steel – blank; Stainless steel-suffix “SS”; Casehardened steel-suffix “CS”
9. Coating: Special corrosion resistance coating – add suffix “RR”; Oxide black surface finish – add suffix “B”

KR design cam followers, sizes 16 and 19

  • have a hexagonal recess in the head of the stud, enablling the stud to be held in place by a hexagonal key (Allen wrench) during mounting
  • have a relubrication hole with a pressed-in grease fitting (Accessories) in the centre of the hexagonal recess

KR design cam followers, sizes 22 and 26

  • have a hexagonal recess at each end of the stud, enabling the cam follower to be held in place by a hexagonal key (Allen wrench) during mounting
  • have a relubrication hole for a press-in grease fitting (Accessories) in the centre of each hexagonal recess:
    • with the grease fitting already pressed-in at stud head side
    • with the second grease fitting enclosed

KR design cam followers, sizes  30 to 90 

  • have a hexagonal recess at each end of the stud, enabling the cam follower to be held in place by a hexagonal key (Allen wrench) during mounting
  • have a relubrication hole for a press-in grease fitting (Accessories) in the centre of each hexagonal recess:
    • with the grease fitting already pressed-in at stud head side
    • with the second grease fitting enclosed
  • have a relubrication hole in the stud seat

 

Features and Benefits

Features of KR series cam followers

  • a needle roller and cage assembly or a full complement needle roller set
  • have the outer ring axially guided by the pressed-on flange ring and the stud head (integral flange), forming a gap-type seal
  • have the stud head and stud thread black oxidized
  • are also available with with a PP contact seal (three-stage sealing by plastic axial plain washer) fitted on both sides
    • protecting against coarse contaminants
    • retaining grease reliably in the cam follower
    • improving lubrication conditions in the cam follower, keeping friction and frictional heat low, and extending grease life
  • have a hexagonal recess at each end of the stud, enabling the cam follower to be held in place by a hexagonal key (Allen wrench) during mounting
  • have a relubrication hole for a press-in grease fitting or an adapter from a centralized lubrication system in the centre of each hexagonal recess (Accessories)
  • have a relubrication hole and an annular groove in the stud seat
  • accommodate relatively heavy axial loads that can occur because of skew or tilting

Benefits of KR series cam followers

  • High radial load carrying capacity
    The thick-walled outer ring enables high radial loads, while reducing distortion and bending stresses.
  •  Accommodate axial loads due to skew or tilting
    The integral flange (stud head) and the pressed-on flange ring enable cam followers to accommodate axial loads that can occur because of skew or tilting.
  • Long service life
    The crowned outer ring running surface is beneficial for applications where outer ring tilting relative to the track may occur or where edge stresses need to be minimized.
  • Easy to mount
    The threaded solid stud (pin) of cam followers can be quickly and easily attached to appropriate machine components by means of a hexagonal nut.
  •  Sealed for increased reliability, with relubrication feature
Temperature limits

The permissible operating temperature for cam followers can be limited by:

  • the stud, the outer ring and rollers
  • the cage
  • the seals
  • the lubricant
  • the other components

When temperatures outside the permissible range, please contact us.

Stud, outer ring and rollers

Cam followers are heat stabilized up to at least:

  • 140 °C (280 °F) for designs based on a cylindrical roller bearing
  • 120 °C (250 °F) for designs based on a needle roller bearing

Cages

The permissible operating temperature for cages depends on the seal material:

  • steel cages can be used at the same operating temperature as the stud, the outer ring and rollers
  • 120 °C (248 °F) for polyamide 66 cages

Seals

The permissible operating temperature for seals depends on the seal material:

  • NBR: –40 to +100 °C (–40 to +210 °F)
    Temperatures up to 120 °C (250 °F) can be tolerated for brief periods
  • PP: –20 to +80 °C (–5 to +185 °F)
    PTFE: -196 to +260 °C (–320 to +500°F)  * continuous working temperature had better below +200 °C ( +392°F)
  • Sheet metal angle rings can be used at the same operating temperatures as the stud, the outer rings and rollers

Lubricants

Lithium Soap Grease NLGI #2 

  • SINOPEC Hangu 2# :  –20 to +120 °C (–4 to +248 °F)
  • Shell Alvania EP2: –20 to +120 °C (–4 to +248 °F)

Other components

Eccentric collars and pressed-on flange rings can be used at the same operating temperature as the stud, the outer ring and rollers.

Tolerance and Clearance

Bearing tolerances and clearances

Fit:

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