THK Co., Ltd. CF20UUR Stud-Type Cam Follower Bearing

Description:

The THK CF20UUR Steel Cam Follower is a stud-type cam follower bearing designed to support high radial loads while providing smooth rolling motion in cam mechanisms and linear guide applications. It features a crowned outer ring and double seals to reduce friction, prevent contaminant ingress, and ensure reliable performance in demanding industrial environments. Commonly installed in packaging machinery, conveyors, automated production equipment, machine tools, and material handling systems. Maintenance teams and machine builders use this cam follower for equipment repair, replacement, and new machine construction.

Applications:

The THK CF20UUR belongs to the THK CF Series of stud-type cam followers. The base model CF20 features a 52 mm outer diameter with an M20 × 1.5 threaded stud, making it suitable for medium- to heavy-duty guide roller and cam applications. The suffix "UU" indicates double seals for enhanced protection against dust and contaminants, while the suffix "R" designates a crowned (spherical) outer ring that helps compensate for slight mounting misalignment and minimizes edge loading. The marking "N50" is a proprietary THK manufacturing, inspection, or production lot code and is not publicly documented by THK; therefore, its meaning should not be inferred without the original manufacturing documentation.

Technical Specifications:

• Brand: THK
• Part Number: CF20UUR
• Product Type: Stud-Type Cam Follower Bearing
• Series: CF
• Bearing Type: Cam Follower
• Stud Diameter: 20 mm
• Thread Size: M20 × 1.5
• Outer Diameter: 52 mm
• Outer Ring Width: 24 mm
• Inner Width (B): 25.5 mm
• Overall Length (B1): 66 mm
• Outer Ring Profile: Crowned (Spherical)
• Seal Type: Double Seal (UU)
• Basic Dynamic Load Rating (C): 20.7 kN
• Basic Static Load Rating (C₀): 34.8 kN
• Lubrication: Grease lubricated
• Material: Bearing Steel
• Features: Crowned outer ring, double-sealed construction, high radial load capacity, compact stud-type design, smooth rolling motion, high rigidity, and long service life.

Common Replacements:

• THK CF20 Cam Follower
• THK CF20R Cam Follower
• THK CFT20UUR Cam Follower