Browning 1001387 3-groove Qd Bushed V-belt Sheave 4.35 in Od

Product Description

The BROWNING 1001387 is a three-groove, Quick-Detachable (QD) bushed V-belt sheave designed for power transmission drives in HVAC, industrial, and mechanical equipment applications. It carries Browning part number 3TB40 and accepts P1-style QD bushings with a bore range of 0.5 inches to 1.75 inches, allowing flexible shaft fitment without stocking multiple fixed-bore sheaves. The outside diameter measures 4.35 inches, the A-series belt pitch diameter is 3.6 inches, and the B-series belt pitch diameter is 4.0 inches. The three-groove configuration supports 5V, A, and B belt cross-sections. The iron construction provides the rigidity and balance required for continuous-duty motor and blower drive service.

This sheave is suited for belt-driven HVAC blowers, commercial air handlers, exhaust fans, pumps, and general mechanical equipment where a compact, multi-groove drive is required. The QD bushing system makes it a practical choice for field installations and replacements where disassembly speed and shaft-size flexibility matter. Licensed HVAC technicians, industrial mechanics, and millwrights install this type of sheave when configuring or servicing belt drive systems on rotating equipment.

Key Features

• Three grooves accept 5V, A, and B belt cross-sections for drive flexibility
• P1-style QD bushing system accommodates 0.5 inch to 1.75 inch shaft diameters
• 4.35 inch outside diameter with 3.6 inch A-belt pitch diameter and 4.0 inch B-belt pitch diameter
• Iron construction for durability and balance in continuous-duty drive service
• Single-piece package quantity supports direct one-for-one replacement ordering

Compatibility

Designed as a QD bushed replacement sheave compatible with P1-style bushings and drives using 5V, A, or B cross-section V-belts. Specific model compatibility depends on driven equipment shaft size and belt selection; confirm pitch diameter and belt trade size match before installation.

Installation Notes

De-energize and lock out the motor and drive system before removing or installing any sheave. The QD bushing must be sourced separately and installed to the correct shaft diameter within the 0.5 inch to 1.75 inch bore range. Align sheaves to manufacturer tolerance using a straightedge or laser alignment tool before tensioning belts. Follow OSHA lockout/tagout procedures and applicable machinery guarding codes whenever working on exposed belt drives.