TB Wood's SK218-SK212 Self-Lubricating Bushing

Description:

The TB Wood's SK218-SK212 Self-Lubricating Bushing is used in industrial power transmission systems to securely mount sheaves, sprockets, pulleys, and couplings onto keyed shafts while providing reliable torque transmission and precise shaft alignment. Commonly installed in conveyors, pumps, compressors, fans, mixers, crushers, and other industrial machinery. Maintenance teams, OEMs, and system integrators use this quick detachable bushing for equipment replacement, drive system maintenance, machinery retrofits, and new power transmission installations.

Applications:

The TB Wood's SK218-SK212 Self-Lubricating Bushing is commonly used in industrial automation environments including conveyor systems, mining equipment, aggregate processing plants, material handling machinery, HVAC equipment, agricultural machinery, and manufacturing production lines where secure shaft mounting, accurate component alignment, and dependable torque transmission are essential. Its Sure-Grip® Quick Detachable (QD) design provides rapid installation, easy removal, and a true clamp fit for demanding industrial power transmission applications. The split-through flange and taper design eliminates the need for lubrication while ensuring reliable shaft retention.

Technical Specifications:

• Manufacturer: TB Wood's (Regal Rexnord)
• Model / Part Number: SK218 / SK212
• Product Type: Self-Lubricating Quick Detachable (QD) Bushing
• Bushing Series: Sure-Grip® SK Series
• Bushing Type: Split Taper QD Bushing
• Bore Diameter: 2-1/8 in. (SK218) / 2-1/2 in. (SK212)
• Bore Type: Finished Bore with Keyway
• Keyway Size: 1/2 × 1/4 in. (SK218); 5/8 × 5/16 in. (SK212)
• Material: Ductile Iron / Steel (model dependent)
• Flange Outside Diameter: 3.875 in.
• Barrel Diameter: 2.813 in.
• Overall Length (Length Through Bore): 1.875 in.
• Length Less Flange: 1.375 in.
• Flange Thickness: 0.500 in.
• Bolt Circle Diameter: 3.313 in.
• Number of Cap Screws: 3
• Cap Screw Size: 5/16-18 × 2 in.
• Installation Torque: 15 ft-lb
• Torque Capacity: 7,000 in-lb
• Taper: 3/4 in. per ft. on diameter
• Mounting Style: Conventional or Reverse Mounting
• Features: Split-through flange and taper, true clamp fit, reusable design, precision shaft centering, maintenance-free operation, easy installation and removal.

Common Replacements:

• TB Wood's SK218 / SK212
• Martin SK218 / SK212
• Browning SK218 / SK212