19mm Outer Diameter x 25mm Length, 4mm x 6.35mm Inner Diameter RB Aluminium Flexible Shaft Coupling
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19mm Outer Diameter x 25mm Length, 4mm x 6.35mm Inner Diameter RB Aluminium Flexible Shaft Coupling

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  • Product SKU: LGSTM087
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Specification

Description

19mm Outer Diameter x 25mm Length, 4mm x 6.35mm Inner Diameter RB Aluminium Flexible Shaft Coupling

The RB Aluminium Flexible Shaft Coupling is a compact shaft connector made for joining 4mm and 6.35mm shafts in systems that require smooth and stable rotation. With a 19mm outside diameter and 25mm body length, it is ideal for compact assemblies where precise shaft connection is important. Its spiral beam cut design gives the coupling enough flexibility to accommodate slight shaft misalignment while maintaining efficient torque transfer.

Built from strong aluminium, this single-piece flexible coupling is suitable for applications requiring low backlash, reduced vibration, and consistent rotational performance. It can be used in automation equipment, DIY machinery, 3D motion systems, and light mechanical drive setups where dependable shaft coupling is needed.

Drawing

Drawing

Main Features

  • Flexible spiral structure helps reduce stress from minor shaft offset
  • Compact size suitable for small and medium mechanical assemblies
  • One-piece aluminium body offers durable performance
  • Supports smooth torque transmission with low backlash effect
  • Helical beam design helps limit binding during shaft rotation
  • Suitable for precision-oriented shaft connection tasks

Common Uses

  • Stepper motor to shaft coupling
  • Small CNC and engraving machines
  • 3D printer transmission assemblies
  • Robotics and motion control mechanisms
  • Encoder and motor interconnection
  • Prototype and DIY engineering projects

Technical Details

  • Coupling Type: Flexible Shaft Coupling
  • Series: RB
  • Body Material: Aluminium
  • Outer Diameter: 19mm
  • Overall Length: 25mm
  • Bore Diameter Side A: 4mm
  • Bore Diameter Side B: 6.35mm
  • Bore Configuration: 4mm x 6.35mm
  • Grub Screws: 2 x M3
  • Body Style: One Piece
  • Backlash Type: Zero Backlash

Physical Attributes

  • Weight: 16g
  • Dimensions: 19mm x 25mm
  • Bore Diameter (Both Sides): 4mm x 6.35mm

Package Includes

  • 1 Γ— RB Aluminium Flexible Shaft Coupling 4mm x 6.35mm