Oldham Coupling

Oldham Coupling – Precision Sliding Disc Coupling for Misalignment Compensation

Product Overview

The Oldham Coupling (Cross-Sliding Coupling) is a highly reliable, zero-backlash flexible coupling designed to accommodate significant parallel misalignment while maintaining precise torque transmission. Its unique three-piece construction with a floating center disc makes it ideal for servo systems, encoders, and motion control applications where shaft alignment is challenging.

Key Features & Advantages

1. Triple-Component Sliding Design

Two aluminum/stainless steel hubs with precision-machined grooves

Center sliding disc (POM/PTFE composite) with cross-shaped tenons

Low inertia design for high dynamic response

2. Superior Misalignment Handling

Parallel offset capacity: Up to 10% of coupling diameter

Angular compensation: ±0.5°

Zero backlash operation maintains positioning accuracy

3. Maintenance-Free Operation

Self-lubricating center disc materials available

No wearing parts except replaceable sliding element

Corrosion-resistant versions for harsh environments

Technical Specifications

Performance Parameters

Torque range: 0.5Nm–800Nm

Max speed: 8,000 RPM

Operating temperature: -30°C to +120°C

Material Options

Hubs: Aluminum alloy (6061-T6), stainless steel (304/316)

Disc: POM (standard), reinforced nylon, PTFE composite

Special: ESD-safe, FDA-compliant, or vacuum-rated materials

Application-Specific Benefits

For Precision Machinery

Maintains encoder signal integrity

Compensates for machine tool thermal drift

In Clean Environments

Non-particle generating versions

Ultra-clean materials for semiconductor equipment

Harsh Condition Applications

Stainless steel models for food processing

ATEX-approved versions for explosive atmospheres

Installation Advantages

Radial assembly possible without shaft displacement

Fail-safe design prevents decoupling

Visual wear indicators on sliding element

The Oldham Coupling delivers perfect alignment compensation where other couplings fail – the smart choice when precision meets misalignment challenges.