Selection Guide

Zero-Backlash Couplings

Why servo positioning systems need zero backlash, and which couplings deliver it.

What is backlash

Backlash is the tiny clearance between drive elements. When a servo reverses direction, that clearance lets the shaft "wind up" briefly, causing positioning error and vibration. The higher the accuracy required, the more backlash matters.

How zero backlash is achieved

Three mainstream zero-backlash couplings: diaphragm (metal flexure, rigid, no clearance), jaw (elastomer pre-compressed, no clearance), bellows (one-piece metal bellows). Every SAILINK coupling is zero-backlash.

Applications

Zero-backlash couplings serve: servo-to-ballscrew drives, encoder feedback shafts, CNC feed axes, robot joints, semiconductor inspection equipment.

Why servo positioning systems need zero backlash, and which couplings deliver it.

Free Selection Help →

Ordering & delivery

Minimum order
1 pc
Lead time
3 days in stock · 15 days custom
Warranty
6 months
Payment50% deposit, balance before shipment
Bank transferCompany-to-company only, no personal accounts
PackagingCarton, or pallet with wooden case by quantity
CertificationISO 9001

Request a quote