Continental Contitech 20039629 Bx Cogged V-belt 139 in

Product Description

The CONTINENTAL CONTITECH 20039629 is a BX-section cogged V-belt designed for industrial and HVAC drive applications requiring reliable power transmission. Built with Fiber-Reinforced Vytracord construction, this Torque-Flex belt delivers high flex strength and resistance to heat, cold, and oil contamination. With an outside length of 139 inches and an internal length of 137.80 inches, it fits larger drive systems where dimensional accuracy is critical. The cogged profile reduces bending resistance, improves heat dissipation, and increases efficiency across variable-load conditions. This belt weighs 1.6 pounds and is sold individually.

This belt is suited for use in HVAC blower drive systems, industrial fan drives, compressor drives, and general power transmission equipment operating in demanding environments. The BX section is a common replacement standard across belt-driven equipment in commercial and residential HVAC installations, as well as light industrial machinery. Its oil-resistant compound makes it appropriate for environments where fluid exposure is a concern. The belt number BX136 identifies it within the classical cogged belt sizing system.

Key Features

• BX-section cogged profile reduces bending resistance and improves drive efficiency
• Fiber-Reinforced Vytracord construction provides high tensile strength and dimensional stability
• Oil-resistant compound for use in environments with fluid exposure
• Wide operating temperature range: -40 degrees F minimum to 140 degrees F maximum (equivalent to -40C to 60C)
• Outside length of 139 inches with internal length of 137.80 inches for precise fitment
• Torque-Flex style design supports variable-load and high-torque drive applications

Compatibility

This belt is identified as BX136 within the classical cogged V-belt sizing standard and is designed as a direct replacement for BX136-designated drives in HVAC blower assemblies, industrial fan systems, and general belt-driven equipment using BX-section sheaves.

Installation Notes

Installation is typically performed by HVAC technicians or industrial maintenance personnel. Always de-energize and lock out the drive system before removing or installing belts. Do not pry or roll belts onto sheaves under tension; adjust center distance to allow proper seating. Inspect sheave grooves for wear and alignment before installing a replacement belt, and confirm correct tension per equipment manufacturer specifications before returning the system to service.