Continental Contitech 20043139 Timing Belt 285L 76T

Product Description

The CONTINENTAL CONTITECH 20043139 is an L-section timing belt designed for positive-drive power transmission applications. It features 76 trapezoidal teeth, a nylon construction, and a fiberglass tension cord that resists stretching under load. With a pitch length of 285.00 mm and a belt number designation of 285L, this belt delivers accurate synchronous motion transfer between shafts and sprockets. It is suited for mechanical drives where precise timing and low backlash are critical. Installation is typically performed by maintenance technicians and mechanical trades working on light industrial, HVAC, or equipment drive systems.

This timing belt fits L-series positive-drive applications across a range of mechanical equipment. The 285L designation places it within the standard L-pitch belt family, making it a direct replacement candidate for equipment originally specifying the 285L belt number. Typical applications include fan drives, conveyor systems, pump drives, and other synchronous belt drive assemblies that call for an L-section trapezoidal-tooth belt. The nylon tooth facing helps reduce noise and wear against mating sprocket teeth during continuous operation.

Key Features

• L-section trapezoidal tooth profile for positive synchronous drive
• 76 teeth with 285L belt number designation and 285.00 mm pitch length
• Nylon belt material provides wear resistance and reduced operating noise
• Fiberglass tension cord resists elongation and maintains tooth pitch under load
• L Series Positive Drive configuration for accurate shaft-to-shaft timing

Compatibility

Designed as a standard L-section synchronous belt replacement for mechanical drive systems specifying a 285L belt. Confirm sprocket tooth count, belt pitch, and width requirements against the existing drive design before installation.

Installation Notes

Timing belt replacement should be performed by a qualified technician familiar with synchronous drive systems. Disconnect and lock out all power to the drive before removing guards or belts. Do not force the belt over sprocket flanges; relieve tension on the drive by adjusting center distance before seating the belt. Inspect sprocket teeth for wear and replace worn components before installing a new belt to avoid premature failure.