Browning 2VP50X1 2-Groove Variable Pitch FHP Sheave 4.75" OD 1" Bore

The Browning 2VP50X1 is a two-groove, finished bore, cast iron variable pitch sheave from Browning's VP Series FHP (Fractional Horsepower) line. Featuring a 4.75" outside diameter and a 1" finished bore, this adjustable pitch sheave is designed for belt drive systems requiring precise speed control without changing components.

Variable pitch sheaves work by allowing the threaded angular-faced discs that form the V-shaped groove to move relative to each other. When the disc flanges are moved closer together, the belt rides higher in the groove, increasing the effective pitch diameter and driven speed. Moving the flanges apart lowers the belt in the groove, reducing the pitch diameter and driven speed. This on-the-fly adjustability makes the VP Series ideal for HVAC air handling equipment, fans, and blowers where optimal operating speed must be fine-tuned.

Key Features:

• Outside Diameter: 4.75"
• Bore: 1" finished bore with standard keyseat
• Grooves: 2 grooves
• Belt Sections: Compatible with 3L, 4L/A, and 5L/B cross-section FHP V-belts
• Material: Durable gray cast iron, Class 30
• Horsepower Rating: Up to 25 HP
• Max Rim Speed: 6,500 feet per minute
• Adjustment: Pitch diameter adjusted by rotating the movable flange on the threaded hub; secured via setscrews on flat surfaces
• Any standard Browning sheave can be used as a companion sheave

The Browning 2VP50X1 is precision-balanced for smooth, vibration-free operation and is a trusted choice for HVAC technicians and industrial maintenance professionals. Note: Do not rebore this sheave, as concentricity may be lost.