Rectorseal 74436 Classical B-section V-belt 46 Inch

Product Description

The RECTORSEAL 74436 is a molded classical B-section V-belt engineered for higher-load HVAC blower and motor drive applications. It features a wrapped fabric cover construction built on an oil and heat resistant rubber compound, and incorporates a static dissipating design suited to fractional and light industrial horsepower drives. The belt runs a 21/32-inch top width and 13/32-inch thickness, with a 46-inch outside length and a 44-inch inside length. HVAC technicians and mechanical contractors rely on this belt for reliable power transmission in single-belt drive configurations on blower and fan assemblies.

This B-section V-belt is commonly installed in residential and light commercial HVAC systems where blower motors drive air handlers, furnace fans, and similar rotating equipment. The B44 designation reflects the standard classical B cross-section at a 44-inch inside length, making it a widely recognized fit for equipment that specifies a B44 belt. Its oil and heat resistant construction holds up in mechanical rooms and equipment closets where temperature and contamination exposure are routine service conditions.

Key Features

• Classical B-section cross section: 21/32-inch top width, 13/32-inch thickness
• 46-inch outside length, 44-inch inside length
• Wrapped fabric cover construction for durability and surface protection
• Oil and heat resistant rubber compound for demanding mechanical environments
• Static dissipating design reduces static buildup in sensitive drive applications
• Rated for fractional and light industrial horsepower single-belt drive configurations

Compatibility

Designed as an OEM-style replacement B44 classical B-section V-belt for HVAC blower and motor drive systems specifying a B-section belt with a 44-inch inside length and 46-inch outside length.

Installation Notes

Installation is typically performed by a licensed HVAC technician or qualified mechanical contractor. Disconnect and lock out power to the equipment before removing or installing any drive belt. Inspect pulleys and sheaves for wear, misalignment, and proper groove profile before fitting the new belt, and verify correct belt tension per the equipment manufacturer's specifications using a belt tension gauge. Do not pry the belt over pulley flanges using sharp tools, as this can damage the belt cover and reduce service life.

Technical Specifications

• Belt Section: Classical B-section
• Top Width: 21/32 inches
• Thickness: 13/32 inches
• Outside Length: 46 inches
• Inside Length: 44 inches
• Construction: Wrapped fabric cover
• Compound: Oil and heat resistant rubber
• Drive Configuration: Single belt
• Application: Fractional and light industrial horsepower drives

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: 74436