Cylindrical Coupling

The Cylindrical Coupling is a compact shaft-connection component with rigid and elastic structural options in a cylindrical form. It is used with servo motors, stepper motors, small reducers, instruments, CNC equipment, medical devices, and other compact rotary transmission systems.

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Product Introduction

Product Overview

Core Advantages

Rigid and Elastic Configurations
The rigid version uses a metal body for direct shaft connection, while the elastic version incorporates a rubber element within the cylindrical structure. A rigid version suits assemblies where alignment is already controlled and torsional movement must be minimized. The elastic version is used where a small amount of buffering is needed between connected shafts.

Zero-Backlash Rigid Transmission Option
The rigid configuration is designed for zero-backlash torque transfer. In servo, stepper, instrument, or CNC axes where reversal accuracy depends on the connection responding immediately to shaft motion, eliminating an intentional elastic gap helps preserve the positional relationship between the driving and driven sides.

Precision-Turned Bore and Outer Diameter
The shaft bore and outside diameter are precision turned and polished. In compact equipment where the coupling must seat concentrically on small shafts and rotate close to nearby components, controlled cylindrical geometry reduces fit variation and supports the alignment established during assembly.

Customization

Rigid or Elastic Structure
The coupling can be specified as a rigid metal design or an elastic design with an internal rubber element according to the transmission requirement.

Bore and Outside Dimensions
Shaft bores, outside diameter, length, and related mounting dimensions can be produced to non-standard equipment drawings.

Material and Surface Condition
Metal grade and surface treatment can be matched to the installation environment, while the elastic version can use a project-specified rubber element.

Quality Control

Incoming metal and elastic components are checked against the specified product configuration before machining or assembly. Rigid and elastic versions remain separately identified through production.

Bores, outer diameter, length, and the geometry controlling concentric installation are measured against the drawing. For elastic versions, the rubber element is also checked for complete molding, tears, flash, and correct seating within the cylindrical body.

Finished couplings receive a final dimensional and surface-condition inspection before packing. Part identity, quantity, and packaging information are verified against the order, and third-party inspection can be arranged if required.