Description

Overview

Optibelt Idler to Fan Shaft Belt SMX / SL is a replacement V-belt for Thermo King refrigeration units that use an electric motor fan drive. It connects the idler-to-fan shaft drive path, so it matters when belt wear, cracking or loss of tension affects fan operation and routine reefer servicing.

Features

• Suits Thermo King SMX and SL-100 to SL-400-50 electric motor applications.
• Used on the idler to fan shaft drive path rather than the engine-to-compressor side.
• Helps restore the intended belt drive path when the existing belt is worn, glazed or damaged.
• Match the unit family, electric motor arrangement and existing belt markings before ordering.

Specifications and Materials

Product type: idler to fan shaft belt.

Application: Thermo King SMX / SL-100 to 400-50 with electric motor.

Part number: TK-78-0983-OP.

See the Optibelt V-belt technical guide

Compatibility and Fitment

Check the unit family, electric motor setup and belt routing before ordering, because similar Thermo King belts are used across different drive positions. This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 78-0983, 780983, 780-983, 78-983, 78983, 78-0927, 780927, 78-927, 78927, 47-1788, 471788, 471-788

Compliance and Safety

Install the belt without forcing it over the pulley edges, then recheck alignment and tension after fitting. If the old belt failed from misalignment or seized components, correct that cause as well before returning the unit to service.

Trailer Applications

Optibelt Idler to Fan Shaft Belt SMX / SL suits trailer refrigeration units in the Thermo King SMX and SL range where the electric motor arrangement drives the fan shaft through the idler path. It is the belt to inspect and replace during belt-drive servicing when fan performance or belt condition points to wear.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

When you need Optibelt Idler to Fan Shaft Belt SMX / SL for Thermo King service work, ICS Trailers lists it within the broader Thermo King parts range used in trailer refrigeration maintenance. Browse Thermo King parts at ICS Trailers