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Accessory Drive Systems

As a global leader in belt drive systems since the invention of single belt drives, Litens has experience with every manner of system tensioning and isolating strategies including simulation, testing, validation, and production. We are focused on friction-based damping systems as they offer superior performance, reliability and cost over hydraulic based devices. Our belt tensioners have a number of choices for pivot system and damping control depending on customer and applications requirements.
Linear Belt Tensioner

Compact Rotary Tensioner™

The latest iteration of our automatic belt tensioner delivers controlled accessory drive belt tension over the life of the engine with even lighter weight and superior performance.

Fuel Economy Noise Reduction
Strut Tensioner

Linear Belt Tensioner™

Our linear tensioner innovation is ideally suited to engines where space is constrained. The design offers superior damping stability and light weight with lifetime reliability.

Fuel Economy Noise Reduction
Idler Pulley

Idler Pulley™

High strength light weight pulleys with proprietary engineered bearings used to facilitate advantageous belt routing.

Noise Reduction

Timing Drive Systems

Our engineered products are designed for dynamic optimization of timing systems allowing them to achieve lifetime durability and improved fuel efficiency. Litens was the first to design and develop automatic timing belt tensioners and we continue to be the global leader with hundreds of millions of parts in the field. We also invented the revolutionary SmartSprocket concept. It consists of a non-round engineered sprocket profile for chain or belt drives designed to reduce or cancel system resonance through torque cancellation while significantly improving durability, noise and fuel efficiency.
Compact Rotary Tensioner

Timing Belt Tensioner™

Designed for demanding overhead cam engine applications, the tensioner significantly extends timing belt life and protects the engine from damaging tooth skip.

Fuel Economy Noise Reduction Weight Reduction


Shaped sprockets that smooth the effect of camshaft pulsations through carefully engineered geometry synchronized to the engine firing. Depending on the system, they may be elliptical, triangular or “square” and provides vibration control in a single part.

Fuel Economy Noise Reduction Weight Reduction