Thk SR-25-TB Linear Motion Guide Block

Description:

The THK SR-25TB Linear Motion Guide Block is a flange-type radial linear bearing block designed for SR25 guide rails, providing high rigidity, excellent load capacity, and smooth linear motion for precision industrial equipment. Commonly installed in CNC machining centers, factory automation systems, semiconductor equipment, packaging machinery, robotics, and precision assembly machines where stable, accurate linear guidance is required. Maintenance teams and system integrators use this bearing block for OEM replacement, machine repair, retrofit projects, and the construction of high-performance linear motion systems.

Applications:

The THK SR-25TB is engineered for medium- to heavy-duty linear motion applications requiring high accuracy, superior rigidity, and reliable performance. Its flange-type radial design provides excellent resistance to vertical and horizontal loads, making it suitable for industrial automation, machine tools, inspection systems, material handling equipment, electronic manufacturing, and precision positioning systems.

Technical Specifications:

• Manufacturer: THK
• Product Type: Linear Motion Guide Bearing Block
• Model: SR-25TB
• Series: SR Full-Ball LM Guide
• Guide Type: Radial Type Linear Motion Guide
• Compatible Rail Size: SR25
• Block Style: TB Flange Type
• Bearing Design: Full Ball
• Overall Height (M): 33 mm
• Overall Width (W): 73 mm
• Overall Length (L): 83 mm
• Block Width (B): 60 mm
• Block Height (H): 35 mm
• Block Length (L1): 59 mm
• Mounting Thread: M6
• Basic Dynamic Load Rating: 30.9 kN
• Basic Static Load Rating: 44.7 kN
• Preload Options: Normal (No Symbol), C1 (Light Preload), C0 (Medium Preload)
• Accuracy Grades: Normal, H, P, SP, UP
• Lubrication: Grease or Oil Lubrication
• Standard Grease Nipple: B-M6F
• Seal Options: None, UU, SS
• Operating Temperature: -15°C to 80°C
• Material: Hardened Bearing Steel
• Features: Radial load design, flange mounting configuration, smooth low-friction motion, high rigidity, high positioning accuracy, long service life, low maintenance requirements, and compatibility with optional THK LaCS lubrication system.

Common Replacements:

• THK SR25TBM
• THK SR25SB
• THK SR25SBM