Model CFS SERIES

THK’s Cam Follower Model CFS SERIES represents a specialized category of linear motion components engineered for applications requiring precise tracking of cam profiles and robust support under high radial and axial loads. These units integrate a stud-type design with a heavy-duty outer ring, available in both standard and crowned outer diameter configurations to accommodate varying contact stress distributions and alignment tolerances. The CFS SERIES features deep-groove ball tracks optimized for smooth rolling motion and extended service life, with optional configurations including sealed or shielded variants to enhance contamination resistance in harsh operating environments. Constructed from high-carbon chromium bearing steel (SUJ2) subjected to stringent heat treatment processes, these followers achieve a core hardness of HRC 58-64 while maintaining dimensional stability under dynamic loading conditions.

Technical innovations in the CFS SERIES include precision-ground raceways with controlled micro-geometry to minimize vibration and noise generation during high-speed operation. The stud portion incorporates a threaded shank with machined flats for secure mounting, while the crowned outer ring design—designated as CF…S variants—effectively mitigates edge loading by distributing contact forces across a broader surface area. Lubrication is facilitated through radial grease holes and grooves, ensuring consistent film formation between rolling elements and raceways. Performance advantages manifest as exceptional durability under shock loads, with dynamic load ratings reaching 14.3 kN for standard models and operational temperatures spanning -10°C to 120°C. The optimized contact angle enables simultaneous absorption of radial and axial forces, reducing system complexity by eliminating need for additional thrust elements.

Industrial implementations leverage these characteristics across multiple sectors. In automotive transfer lines, CFS units guide indexing mechanisms in engine block machining stations where cam-actuated lifting arms require zero-backlash motion. Packaging machinery employs them in intermittent motion assemblies, such as rotary fillers where followers engage with barrel cams to convert rotational input into precise linear strokes. Semiconductor manufacturing equipment utilizes the sealed CFS variants in wafer handling robots, maintaining positioning accuracy despite particulate contamination risks. For heavy-duty applications like steel processing lines, the series’ high moment load capacity stabilizes oscillating guide rolls in continuous casting machines. The crowned profile variants prove critical in printing press registration systems, compensating for parallel misalignment between cam shafts and follower arrays while maintaining print registration within ±0.1mm. Through these deployments, the CFS SERIES demonstrates its fundamental role in enhancing mechanical efficiency and reliability across industrial automation landscapes.

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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
CFS 2.5-A Cam Follower
5
M2.5×0.45
3
4.5
9.5
0.41
0.335
1
1.08
CFS 3-A Cam Follower
6
M3×0.5
4
5.5
11.5
0.63
0.61
1.37
1.77
CFS 4-A Cam Follower
8
M4×0.7
5
7
15
1.08
1.08
2.35
3.04
CFS 5-A Cam Follower
10
M5×0.8
6
8
18
1.57
1.86
3.14
4.71
CFS 6-A Cam Follower
12
M6×1.0
7
9.5
21.5
2.06
2.16
4.61
6.27