Continental Contitech 20039555 BX42 Cogged V-belt 45 in

Product Description

The CONTINENTAL CONTITECH 20039555 is a BX-section cogged V-belt rated for demanding drive applications in HVAC, industrial, and mechanical power transmission systems. Built with Fiber-Reinforced Vytracord construction, this Torque-Flex belt delivers flexibility and grip across a wide temperature range. The cogged underside reduces bending resistance and heat buildup, making it well-suited for smaller-diameter sheaves and high-torque loads. It carries a belt number designation of BX42, with an outside length of 45.0 inches and an internal length of 43.80 inches. Oil-resistant construction helps the belt maintain performance in environments where fluid exposure is a factor.

This belt fits standard BX-section sheave drives found in residential and light commercial HVAC systems, refrigeration equipment, agricultural machinery, and general industrial power transmission setups. It is a direct replacement for any drive requiring a BX42 belt. HVAC technicians and mechanical contractors install this belt in blower drives, condenser fan drives, and similar rotating equipment where a cogged BX-profile belt is specified.

Key Features

• BX42 cogged profile reduces bending resistance for improved efficiency on smaller sheaves
• Fiber-Reinforced Vytracord construction provides strength and flexibility
• Oil-resistant material resists degradation in fluid-exposed environments
• Rated from -40 degrees F (-40 degrees C) to 140 degrees F (60 degrees C)
• Torque-Flex style design handles variable-speed and high-torque drive applications
• Outside length of 45.0 inches with internal length of 43.80 inches

Compatibility

Designed as a direct-replacement BX42 cogged V-belt for any drive system specifying a BX-section belt with a 45.0-inch outside length and 43.80-inch internal length.

Installation Notes

Belt replacement is typically performed by HVAC technicians or millwrights. Always de-energize and lock out the equipment before removing the old belt. Adjust sheave spacing to allow belt installation without forcing the belt over the sheave flanges, then tension according to the equipment manufacturer's deflection specification. Inspect sheaves for wear or misalignment before installing the new belt.