Browning 1026558 Single Groove Sheave 4.6 in Od Cast Iron

Product Description

The BROWNING 1026558 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability under continuous load, this sheave features a 4.6-inch outside diameter and a pre-finished 7/8-inch bore ready for direct shaft mounting. The groove is machined to accept standard B-section or A-section belts as well as 3L-section belts, making it a versatile choice for blower and fan drive assemblies. Bore length through the hub measures 1-5/32 inches. HVAC technicians, millwrights, and mechanical contractors install this component when servicing or replacing belt-drive systems on air handling units, furnace blowers, and similar equipment.

This sheave is suited for single-belt drive configurations in light to medium duty applications including residential and light commercial HVAC blower assemblies, ventilation fans, and general-purpose power transmission setups. It is designed for use with 3L, 4L, or A-section V-belts. The finished bore eliminates field machining and allows direct installation onto a 7/8-inch shaft diameter. Its compact profile and standard groove geometry make it a practical OEM-style replacement in applications where the original drive design is preserved.

Key Features

• Finished bore at 7/8 inch — no field machining required for 7/8-inch shafts
• 4.6-inch outside diameter with single groove configuration
• Compatible with 3L, 4L, and A-section V-belts for broad belt application coverage
• Cast iron construction provides strength and resistance to wear under belt tension loads
• Groove width of 3/4 inch suits standard V-belt profiles
• Hub length through bore of 1-5/32 inches provides stable shaft engagement

Compatibility

Designed as an OEM-style replacement single groove sheave for V-belt drive systems using 3L, 4L, or A-section belts on a 7/8-inch shaft diameter.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Always de-energize and lock out the equipment before removing or installing drive components. Verify shaft diameter and belt section before installation, and check belt tension and sheave alignment after assembly to prevent premature wear. Consult applicable mechanical and electrical codes for lockout/tagout requirements.