THK SHW21CA2UU370L LINEAR GUIDE BLOCKS RAIL

Description:

The THK SHW21CA2UU370L Linear Guide Blocks and Rail Assembly is a complete caged ball linear motion guide consisting of two SHW21CA flange-type bearing blocks mounted on a 370 mm SHW21 wide guide rail. It is designed for compact, high-rigidity linear motion applications requiring excellent moment load capacity, smooth travel, and precise positioning. Commonly installed in semiconductor manufacturing equipment, automated assembly systems, packaging machinery, medical devices, precision inspection equipment, and industrial robotics. Maintenance teams and system integrators use this assembly for machine repair, OEM replacement, retrofit projects, and new automation systems requiring reliable and accurate linear guidance.

Applications:

The THK SHW21CA2UU370L is engineered for compact precision motion systems where space savings, high rigidity, and long service life are essential. Its wide-rail configuration provides outstanding resistance to moment loads while maintaining smooth, low-friction movement, making it suitable for laboratory automation, electronic manufacturing equipment, vision systems, CNC auxiliary axes, pick-and-place machines, and precision material handling applications.

Technical Specifications:

• Manufacturer: THK
• Manufacturer Part Number: SHW21CA2UU370L
• Product Type: Caged Ball Linear Motion Guide Wide-Rail Assembly
• Series: SHW Wide-Rail LM Guide
• Bearing Block Model: SHW21CA
• Number of Bearing Blocks: 2
• Rail Model: SHW21
• Rail Length: 370 mm
• Rail Size: 21 mm
• Guide Type: Wide-Rail, Low-Profile Linear Motion Guide
• Block Style: Flange Type (CA)
• Block Mounting: Bolts Mounted from Above and Below
• Ball Retainer: Caged Ball Design
• Loading Direction: Four-Way Equal Load
• Rail Width: 68 mm
• Block Height: 21 mm
• Block Length: 59 mm
• Basic Dynamic Load Rating: 8.24 kN
• Basic Static Load Rating: 12.8 kN
• Lubrication: Grease or Oil Lubrication
• Seal Type: UU Double End Seals
• Preload Options: Normal (No Symbol), Light Preload (C1)
• Accuracy Grades: Normal, High (H), Precision (P), Super Precision (SP), Ultra Precision (UP)
• Operating Temperature: -15°C to 80°C
• Material: Hardened Bearing Steel
• Features: Wide rail construction, low-profile design, high moment rigidity, self-adjusting capability, low noise, long maintenance intervals, high positioning accuracy, and compatibility with THK QZ lubrication systems.

Common Replacements:

• THK SHW21CA2UU310L
• THK SHW21CA2UU470L
• THK HRW21CA2UU370L