Overview
The Martin 2 5V 750 SK is a Hi-Cap® wedge stock sheave pulley manufactured by Martin Sprocket & Gear for narrow V-belt (5V) drive applications. This is a Type C-1 solid sheave with a quick-detachable (QD) SK bushing bore, designed for smooth power transmission in industrial machinery and motion control systems. The sheave is cast from class 30 gray iron with industry-leading engineering for durability and reliability.
Key Features
- 5V Narrow V-Belt Compatible: Designed for standard 5V-cross-section V-belts used across industrial equipment
- QD SK Bushing: Quick-detachable SK bushing bore allows easy shaft mounting and removal; accommodates bores from 1/2 to 2-5/8 inches
- Statically Balanced: Factory-balanced to minimize vibration during normal operation
- Cast Iron Construction: Class 30 gray iron (30,000 PSI tensile strength) provides durability and consistent performance
- Type C-1 Solid Sheave: Rigid, single-piece design for stable belt engagement and torque transmission
Technical Specifications
- Groove Count: 2 grooves
- Pitch Diameter: 7.4 inches
- Outside Diameter (OD): 7.5 inches
- Face Width: 1.688 inches
- Overall Length: 1.94 inches
- Bushing Type: SK (Quick-Detachable)
- Bore Range: 1/2 to 2-5/8 inches (via SK bushing)
- Belt Section: 5V narrow wedge
- Maximum Speed: 6,500 FPM (feet per minute)
- Material: Class 30 gray cast iron
- Tensile Strength: 30,000 PSI
Typical Applications
The Martin 2 5V 750 SK is used in a wide range of industrial drive systems including:
- Conveyor systems and material handling equipment
- Fan and blower drives
- Pump drives (mechanical power transmission)
- Motor-to-machinery power coupling
- Manufacturing and processing equipment with V-belt drive trains
- Machine tool drives requiring precise speed reduction or multiplication
Compatibility & Replacements
Compatible With
- 5V-cross-section V-belts (standard narrow wedge belts)
- SK-series quick-detachable bushings (1/2 to 2-5/8 inch bore capacity)
- Standard industrial V-belt drive systems and motor couplings
- Shaft-mounted applications with flexible bushing bore requirements
Replaces / Drop-In Replacement For
The Martin 2 5V 750 SK is interchangeable with other manufacturer QD bushings that conform to industry standards for 5V sheaves with SK-type quick-detachable bore systems. Always verify compatibility with your specific shaft diameter and drive configuration before ordering.
Works With
- Martin SK bushings and QD bushing systems
- Standard 5V V-belt drive configurations
- Fractional-horsepower to moderate industrial motor drives
- Variable-speed and fixed-speed pulley systems
