An Explanation of Differential Drives

A differential is a gearbox that consists of three elements which impose a definite speed and torque relationship upon each other. It can be used with two inputs and one output or one input and two outputs.

Andantex USA offers several different types of differentials; each of which provides unique solutions that are ideal for specific power transmission applications. The following explains the types of differentials, their characteristics, advantages, and the applications they are used on:

Compound Epicyclic Differentials

Applications:	Reducer/Increaser Two or More Speeds Phase-Shifting Precise Speed Adjustment Creation of a Relative Speed While Running Cyclic Synchronization of Two Speeds Timing Movements Balance Speed & Torque
Products:	Planetary Epicyclic Drive - Type SA Narrow-Band Draw Control Differentials - Type DLA
Advantages:	Compact Versatile Concentric Shafts Reduced Backlash < 12 arc-minutes Ratios from 1:1 to 260:1
Industries:	Printing: Register Control of Print Units Converting: Phase-Shifting of Cutoff Knives Textile: Advance & Return Motion on Non-Woven Textile, Tension regulation Wire/Metal: Tensioning Bridle Drive, Control of Coiling Machines, Speed Synchronization for Linear Capstans, Strip Tension Control Machine Tool: Automatic Two-Speed for Transfer Tables.

Planetary Differentials

Applications:	Register Control Speed and Position Control
Products:	Differential Phase-Shifters In-line: Type DLO & DLO.D Right-Angle: Type DR Right-Angle Clutching: Type DRD & DRI
Advantages:	Compact Easy Mounting Minimum Backlash Low Transmission Error
Industries:	Printing: High-Quality Print Unit Register Control, Web Tension Regulation Packaging: Die-Cutter Phase-Shifting on Pre-Printed Web, Positioning on Tubular Wrapping Converting: Web Tension Regulation, Cut to Length Positioning

Cycloidal Differentials

Applications:	Cyclic Synchronization of Two-Speeds Dynamic Register Control Creation of a Relative Speed While Running
Products:	Cycloidal Differentials - Type DLS & 2SRD Corbac Servo-Reducers - Type 2SR84
Advantages:	< 1 Arc-Min. Backlash High Stiffness Low Inertia Dynamic Drive
Industries:	Converting: Surface Rewinder Ejection Roll Drive, Cut to Length by Constant Diameter Knife Cylinder. Printing: Constant Diameter Impression Cylinder Drive for Different Impression Lengths.

If you have any questions regarding the information provided here or require more information, please call us at (800) 713-6170 or e-mail us. Our Sales and Engineering departments are ready to help you with your specific power transmission needs.