Continental Contitech 20039628 Bx Cogged V-belt 136in BX133

Product Description

The CONTINENTAL CONTITECH 20039628 is a BX-section cogged V-belt designed for demanding power transmission applications in HVAC, industrial, and mechanical drive systems. Built with fiber-reinforced Vytracord construction, this belt delivers high tensile strength and dimensional stability under load. The cogged profile reduces bending resistance and heat buildup, improving efficiency on smaller-diameter sheaves. It carries a 136-inch outside length (134.80-inch internal length) and is rated for operation from -40 degrees F to 140 degrees F, making it suitable for both outdoor and mechanical room installations. This belt corresponds to the standard industry belt number BX133.

This belt fits a wide range of belt-driven equipment including commercial and residential HVAC fan assemblies, blower drives, compressor drives, pump drives, and general industrial machinery requiring a BX-section cogged belt. It is commonly installed by HVAC technicians, millwrights, and mechanical contractors on variable-speed and fixed-speed drive systems where heat and oil exposure are factors. The oil-resistant compound helps maintain belt integrity in environments where incidental oil contact is possible.

Key Features

• BX cogged section profile reduces bending resistance and improves drive efficiency on small-diameter sheaves
• Fiber-reinforced Vytracord construction provides high tensile strength and resistance to elongation
• Oil-resistant compound protects belt integrity in service environments with incidental oil exposure
• Rated from -40 degrees F to 140 degrees F for use across a broad range of operating conditions
• 136-inch outside length with 134.80-inch internal length matches standard BX133 belt dimensions
• Torque-Flex style design accommodates flex and wrap on variable-pitch and fixed sheave drives

Compatibility

Designed as a direct replacement for standard BX133 belt applications across HVAC blower drives, industrial fan drives, pump drives, and other equipment specifying a BX-section cogged V-belt with 136-inch outside length.

Installation Notes

Belt replacement should be performed by a qualified HVAC technician or mechanical contractor after de-energizing and locking out all power to the drive system per OSHA lockout/tagout procedures. Never pry or force a belt over sheave flanges; adjust the drive center distance to allow proper belt seating. After installation, check belt tension and alignment per the equipment manufacturer specifications before restoring power. Inspect sheaves for wear, misalignment, or damage and replace as needed to prevent premature belt failure.