Continental Contitech 20039583 Bx Cogged V-belt BX70

Product Description

The CONTINENTAL CONTITECH 20039583 is a BX-section cogged V-belt designed for power transmission applications in HVAC, industrial, and mechanical drive systems. Built with fiber-reinforced Vytracord construction, this belt delivers high tensile strength with flexibility suited for variable-pitch and fixed-sheave drives. The cogged profile reduces bending resistance and heat buildup, extending belt life in demanding duty cycles. It has an outside length of 73 inches and an internal length of 71.80 inches, conforming to the standard BX70 designation. The belt is rated oil-resistant and handles operating temperatures from -40 degrees F to 140 degrees F (approximately -40 C to 60 C).

This belt is used in residential and light commercial HVAC systems, refrigeration equipment, air handlers, agricultural machinery, and general industrial drive applications where a BX-section cogged belt is specified. It is a direct form-fit replacement for any system calling out the BX70 belt size. Installation is handled by HVAC technicians, millwrights, and mechanical service professionals familiar with sheave-and-belt drive systems.

Key Features

• BX-section cogged profile reduces bending resistance and heat for longer belt life
• Fiber-reinforced Vytracord construction provides high tensile strength and dimensional stability
• Oil-resistant compound suitable for environments with incidental oil or coolant exposure
• Wide operating temperature range: -40 degrees F to 140 degrees F
• 73-inch outside length (71.80-inch internal length) — standard BX70 sizing
• Torque-Flex style construction for compatibility with variable-speed and standard fixed drives

Compatibility

Designed as a standard BX70 replacement V-belt for any drive system specifying a BX-section cogged belt with a 73-inch outside length and 71.80-inch internal length.

Installation Notes

Belt replacement should be performed by a qualified technician with the drive system fully de-energized and locked out per OSHA lockout/tagout procedures. Proper sheave alignment and belt tension are critical — use a tension gauge where available and follow the equipment manufacturer's deflection specifications. Do not pry the belt over sheave flanges; always move the driven component to relieve tension before removal and installation. Inspect sheave grooves for wear before installing a new belt.