Browning 1043090 2BK70H Qd Bushed V-belt Sheave 2 Groove

Product Description

The BROWNING 1043090, model 2BK70H, is a two-groove, QD-bushed V-belt sheave designed for power transmission applications in HVAC, industrial, and mechanical drive systems. The sheave accepts an H-style quick-detach bushing, allowing for rapid installation and removal without specialty tooling. The outside diameter measures 6.75 inches, with a belt pitch A diameter of 6.0 inches and a belt pitch B diameter of 6.4 inches. Bore diameter is field-configurable from 0.375 inches to 1.5 inches depending on the bushing selected. Weighing 5.45 pounds, this sheave suits applications where reliable belt-driven power transfer is required. Licensed trades and mechanical contractors install this component during drive system assembly, replacement, or redesign.

This sheave is used in belt-drive assemblies found in residential and commercial HVAC air handlers, blower systems, cooling towers, pumps, and general industrial machinery. The two-groove configuration supports dual A-section or B-section V-belts running in parallel, making it appropriate for higher-torque or redundant-drive setups. The H-style QD bushing interface is a widely used standard in split-taper bushing systems, simplifying shaft fitment across a range of bore sizes within the specified min-max range.

Key Features

• Two-groove design supports dual A-section or B-section V-belt configurations
• QD H-style bushing mount allows fast installation and removal with standard hand tools
• Bore diameter adjustable from 0.375 inches to 1.5 inches via H-style bushing selection
• 6.75 inch outside diameter with 6.0 inch belt pitch A diameter and 6.4 inch belt pitch B diameter
• Weighs 5.45 pounds for straightforward handling during installation
• UNSPSC Code 31171804 for procurement and catalog classification

Compatibility

Designed as an OEM-style replacement or new-install sheave for belt-drive systems requiring an H-style QD bushed, two-groove V-belt sheave with a 6.75 inch outside diameter. Specific bushing must be ordered separately to achieve the desired bore diameter within the 0.375 inch to 1.5 inch range.

Installation Notes

Installation should be performed by a qualified mechanical contractor or HVAC technician. Always de-energize and lock out the drive system before removing or installing sheaves, per OSHA lockout/tagout procedures. Ensure the mating QD H-style bushing is correctly torqued per the bushing manufacturer specifications before running the drive. Verify belt alignment and tension after installation to prevent premature wear.