MasterDrive SF1.1/4 Taper-Lock Bushing, 1-1/4" Bore

MasterDrive SF 1‑1/4 Taper‑Lock® bushing is a precision power‑transmission mounting component designed to securely fasten pulleys, sprockets, and sheaves to 1‑1/4 inch shafts, providing high concentricity, easy installation, and reliable torque transmission in industrial applications. Technical specifications: Manufacturer: MasterDrive Power Transmission Products Part number: SF 1.1/4 Bushing type: Taper‑Lock® SF series Bore diameter: 1‑1/4 in (1.250 in / 31.75 mm) Bore tolerance: Standard Taper‑Lock® commercial tolerance Keyway: 1/4 in x 1/8 in (ANSI standard for 1‑1/4 in shafts) Keyway type: Straight parallel keyway Taper angle: 8° included taper (Taper‑Lock® standard) Mounting style: Split tapered bushing with flange Flange type: SF standard flange Number of mounting holes: 3 Mounting hardware: Cap screws (included or required per application), standard SF size Material: High‑strength cast iron Surface finish: Black oxide / phosphate protective finish Operating temperature range: ‑20 °F to +250 °F (‑29 °C to +121 °C), typical Application compatibility: SF‑series pulleys, sprockets, sheaves, and timing components Torque transmission method: Frictional taper grip with key assistance Installation method: Draw‑in cap screws for easy mounting and removal Reusability: Fully reusable when properly installed and removed Standards compliance: Designed to industry‑standard Taper‑Lock® dimensions Country of manufacture: China Typical applications: Industrial machinery, conveyors, pumps, compressors, HVAC equipment, general power‑transmission systems Please review pictures carefully and let us know if you have any questions!