S-Series Serpentine Drive The InfiniTran™ S-Series product line is directed toward electric motor drive applications.

It too can achieve a neutral point enabling the electric motor to spin up to full speed — with zero RPM on the output shaft — prior to engaging the load.

1. Input Shaft 2. Output Shaft 3. Serpentine Belt 4. Carrier (crank) - Attached to input shaft 5. Carrier (follower) - Floating; Pulled by belt 6. Planetary Gear 7. Sun Gear - Attached to output gear 8. Variator - Hidden from view beneath belt

Key Characteristics:

Multi-rib serpentine belt for high torque capacity. Adapts to a range of belt widths to meet application demands.

Split carrier for belt enables self-tension of the belt, achieving greater tension (for better traction) as the torque demand increases, but relaxing tension under low demand conditions to improve belt wear.

Capable of delivering greater than 10 times input torque at low speed ratios (low output RPM). In some cases can eliminate post drive step-down gearing.

Enables high efficiency electric motors to have speed control with no impact on motor efficiency and no thermal limits to extended low RPM operations.

Can be implemented as a variable speed drive (computer control) or an adjustable speed drive (manual control).

The InfiniTran™ S-Series products normally come in models tailored for 1 to 10hp electric motors. However, we have found that the S-design can efficiently scale to smaller and larger hp/torque applications. Please contact us to discuss how we can adapt this very flexible technology to your applications.