Overview
The Martin Sprocket 1B40SH is a single-groove cast iron V-belt pulley engineered for reliable performance in industrial power transmission systems. This pulley is part of Martin’s standard SH series and features QD (Quick Disconnect) bushing compatibility, allowing for flexible bore sizing and easy installation. The robust cast iron construction ensures durability in demanding operating environments.
Key Features
- Single-groove design accommodates A or B belt section sizes
- Cast iron construction for durability and longevity
- QD bushing compatibility (SH series) with variable bore range from 1/2″ to 1-11/16″
- Precision pitch diameters: 3.6″ (A belt) or 4″ (B belt)
- Made in USA by Martin Sprocket & Gear Inc.
Technical Specifications
- Outside Diameter (OD): 4.35 inches
- Number of Grooves: 1
- Material: Cast Iron
- Pitch Diameter (A Section): 3.6 inches
- Pitch Diameter (B Section): 4 inches
- Face Width: 7/8 inch
- Length Through Bore: 1-5/16 inches
- Bushing Type: QD (Quick Disconnect)
- Bushing Bore Range: 1/2″ to 1-11/16″
- Keyway Options: Multiple sizes available depending on bore (1/4 x 1/8″, 3/16 x 3/32″, 3/8 x 1/16″, 5/16 x 5/32″)
- Series: SH (Standard Bushing)
Typical Applications
The Martin Sprocket 1B40SH is suitable for:
- Industrial conveyor systems and material handling equipment
- Fan and blower drive applications
- Pump and compressor drive systems
- Agricultural machinery
- Manufacturing and assembly line equipment
- Replacement pulley in existing v-belt power transmission systems
Compatibility & Replacements
Compatible With
- A and B section V-belts
- Martin QD quick-disconnect bushings (all bore sizes 1/2″ to 1-11/16″)
- Standard industrial shafts with keyed or plain bore configurations
- Existing Martin pulley systems and installations
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or equipment manufacturer before ordering, as direct cross-reference information is limited for this specific model. The 1B40SH dimensions and QD bushing standard make it suitable for retrofitting equivalent 4.35″ OD, single-groove pulley applications.
Works With
- Martin standard QD bushings and pilot bore adapters
- A and B profile V-belts (classical industrial standards)
- Sheave interchangeability documentation available from Martin Sprocket & Gear
- Standard motor and gearbox shafts with appropriate bore matching
