THK SR30SB LINEAR GUIDE BLOCK BEARING SR30SB1SS (GK) SR30SBTB

Description:

The THK SR30SB Linear Guide Block Bearing SR-30TB is a radial-type full-ball linear motion bearing block designed for SR30 guide rails, delivering high rigidity, smooth linear travel, and excellent load capacity for precision industrial applications. The SR30SB is a compact flange block, while the SR30TB is the longer flange version with increased bearing length for enhanced load distribution and rigidity. Commonly installed in CNC machine tools, semiconductor manufacturing equipment, industrial automation systems, packaging machinery, robotic equipment, and precision material handling systems. Maintenance teams and system integrators use these bearing blocks for OEM replacement, machine repair, retrofit projects, and new linear motion installations.

Applications:

The THK SR30SB bearing blocks SR30TB are engineered for precision linear motion systems requiring smooth movement, high positioning accuracy, and reliable radial load performance. Their flange-type construction provides secure mounting while the full-ball design minimizes friction and ensures long service life, making them suitable for factory automation, machine tools, vision systems, electronic assembly equipment, inspection machines, medical equipment, and automated production lines. 

Technical Specifications:

• Manufacturer: THK
• Product Type: Linear Motion Guide Bearing Block
• Series: SR Full-Ball LM Guide (GK Series)
• Models: SR30SB1SS (GK), SR30SB, SR30TB
• Compatible Rail Size: SR30
• Guide Type: Radial Type Linear Motion Guide
• Bearing Design: Full Ball
• Block Style: SB (Compact Flange Type) / TB (Long Flange Type)
• Overall Height (M): 42 mm
• Overall Width (W): 90 mm
• Overall Length (SB): 67.9 mm
• Overall Length (TB): 96.8 mm
• LM Block Width (B): 72 mm
• LM Block Height (H): 40 mm
• LM Block Length (L1): 40.4 mm (SB) / 69.3 mm (TB)
• Mounting Thread: M8
• Grease Nipple: B-M6F
• Basic Dynamic Load Rating: 29.5 kN (SB1SS)
• Basic Static Load Rating: 34.4 kN (SB1SS)
• Static Permissible Moment (MA): 0.173 kN·m (Single Block)
• Lubrication: Grease or Oil Lubrication
• Seal Configuration (SR30SB1SS): End Seal + Side Seal + Inner Seal
• Accuracy Grades: Normal, H, P, SP, UP
• Maximum Standard Rail Length: Up to 3000 mm (model dependent)
• Material: Hardened Bearing Steel
• Features: Compact radial design, flange mounting, smooth low-friction operation, high rigidity, high positioning accuracy, long service life, and compatibility with THK GK Series SR30 guide rails.

Common Replacements:

• THK SR30TB1SS (GK)
• THK SR30SBM (GK)
• THK SHS30V