Tensioner & idler bearings

A timing belt camshaft drive system comprises of belt, drive and driven pulleys, idlers, and tensioner. Tensioner & idler are not a power transmission component. They provide the life-of-engine tension control when installed and additional belt wrap.

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Structure

A tensioner is one of automotive components which applies a force to create or maintain engine belt tension. There are several types of tensioners.
Fixed tension type, spring tension type, and hydraulic type.

Hydraulic type : HAT

Spring type : TBT

Spring type : ADT

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Product Types-For Timing System

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Product Types-For Accessory System

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Function

• Provides constant tension to the belt to prevent slip or noise
• Prevents belt tooth skip
• Dampens belt vibrations caused by engine firing
• Compensates for effects of engine thermal expansion and contraction on timing drive

Advantage

• Wide range of applications
  (Timing belt system & accessory belt drive system)
• GMB tensioner and idler bearings have met rigorous requirements from car manufacturers