CF-AB SERIES

THK’s Cam Follower Model CF AB SERIES represents a specialized class of linear motion components engineered for applications involving cam mechanisms, guide mechanisms, and linear motion under high moment and heavy load conditions. These units are characterized by their integral stud shaft and yoke-type outer ring, a design that provides exceptional rigidity and load-bearing capacity. The outer ring is meticulously manufactured from high-carbon chromium bearing steel (SUJ2), ensuring superior surface hardness and wear resistance, which is further enhanced through specialized heat treatment processes. A key technical feature is the incorporation of a crowned outer ring surface. This deliberate profiling is critical for mitigating edge loading, a common failure mode in such followers, by ensuring a more uniform distribution of contact stress between the cam surface and the follower, thereby significantly extending the service life of both components.

The performance advantages of the CF AB SERIES are substantial and directly address the demanding requirements of modern machinery. The high rigidity of the yoke-type design allows these followers to withstand significant overturning moments and shock loads without deformation, ensuring consistent and precise tracking of the cam profile. This results in smoother operation, reduced vibration, and lower noise levels, which are essential for high-speed applications. The inclusion of high-quality, long-life lubricants and effective sealing mechanisms, such as seals or shields, protects the internal precision-ground rollers from contamination by dust, debris, or moisture, ensuring reliable performance and minimal maintenance even in harsh operating environments. This combination of robust construction, optimized geometry, and effective sealing delivers unparalleled durability, high rotational speed capability, and long-term operational accuracy.

Typical applications for the THK CF AB SERIES are found across a wide spectrum of industries where reliable motion transfer from a cam is paramount. In industrial automation and machinery, they are indispensable in high-speed automated assembly lines, packaging machinery, and transfer systems, where they accurately convert rotary cam motion into precise linear or oscillating movements for pick-and-place operations, indexing, and workpiece clamping. Within the automotive manufacturing sector, these cam followers are critical components in engine valve train systems for testing rigs, robotic welding and handling arms, and heavy-duty press feeds. Their ability to handle high loads and moments makes them suitable for the rigorous demands of stamping and forming equipment. Furthermore, in precision equipment such as printing presses, textile machinery, and semiconductor manufacturing apparatus, the CF AB SERIES ensures the exact, repeatable motion required for high-quality output and micron-level accuracy, proving to be a vital component for enhancing productivity and reliability.

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Model No. Main dimensions Basic load rating
Outer
diameter
D
Threaded
G
Outer ring
width
C

B
Overall
length
B1
With cage Full-roller type
Dynamic rating
C
Static rating
C0
Dynamic rating
C
Static rating
C0
mm mm mm mm mm kN kN kN kN
CF 12-AB Cam Follower
30
M12×1.5
14
15
40
7.87
9.79
13.4
19.8
CF 12-1-AB Cam Follower
32
M12×1.5
14
15
40
7.87
9.79
13.4
19.8
CF 16-AB Cam Follower
35
M16×1.5
18
19.5
52
12
18.3
20.6
37.6
CF 18-AB Cam Follower
40
M18×1.5
20
21.5
58
14.7
25.2
25.2
51.3
CF 20-AB Cam Follower
52
M20×1.5
24
25.5
66
20.7
34.8
33.2
64.8
CF 20-1-AB Cam Follower
47
M20×1.5
24
25.5
66
20.7
34.8
33.2
64.8
CF 24-AB Cam Follower
62
M24×1.5
29
30.5
80
30.6
53.2
46.7
92.9
CF 24-1-AB Cam Follower
72
M24×1.5
29
30.5
80
30.6
53.2
46.7
92.9
CF 30-AB Cam Follower
80
M30×1.5
35
37
100
45.4
87.6
67.6
145
CF 30-1-AB Cam Follower
85
M30×1.5
35
37
100
45.4
87.6
67.6
145
CF 30-2-AB Cam Follower
90
M30×1.5
35
37
100
45.4
87.6
67.6
145