19mm Outer Diameter x 25mm Length, 3mm x 6.35mm Inner Diameter RB Aluminium Flexible Shaft Coupling
Made from durable aluminium, this one-piece flexible coupling offers zero backlash torsional stiffness, low moment of inertia, and long-lasting performance in demanding applications. It helps protect connected shaft members from the harmful effects of misalignment, vibration, shock loads, and shaft expansion, making it an excellent choice for precision drive systems and motion control assemblies.
19mm Outer Diameter x 25mm Length, 3mm x 6.35mm Inner Diameter RB Aluminium Flexible Shaft Coupling
Available:In Stock
- Product SKU: LGSTM081
₹ 149
₹ 199
Need Volume Discounts? Deals are specially designed for you. Click here
Need Customization? Provide us more details Click here
🏠
Warehouse Details:
Specification
Description
19mm Outer Diameter x 25mm Length, 3mm x 6.35mm Inner Diameter RB Aluminium Flexible Shaft Coupling
The RB Aluminium Flexible Shaft Coupling is a compact and reliable component designed to connect 3mm and 6.35mm shafts for smooth and efficient power transmission. With a 19mm outer diameter and 25mm length, this coupling is suitable for use in CNC machines, 3D printers, stepper motor assemblies, robotics, and other precision motion control systems. Its spiral cut design provides flexibility that helps compensate for minor shaft misalignment while reducing binding during operation.Made from durable aluminium, this one-piece flexible coupling offers zero backlash torsional stiffness, low moment of inertia, and long-lasting performance in demanding applications. It helps protect connected shaft members from the harmful effects of misalignment, vibration, shock loads, and shaft expansion, making it an excellent choice for precision drive systems and motion control assemblies.
Drawing

Technical Details
- Product Type: Flexible Shaft Coupling
- Model Type: RB Aluminium Flexible Coupling
- Material: Aluminium
- Outer Diameter OD: 19mm
- Length L: 25mm
- Bore Diameter ID1: 3mm
- Bore Diameter ID2: 6.35mm
- Bore Size: 3mm x 6.35mm
- Screw Size: 2 x M3
- Torsional Stiffness: Zero Backlash
- Construction Type: One Piece
Features
- Spiral cut body helps compensate for minor shaft misalignment
- Zero backlash design suitable for precision motion systems
- Corrosion-resistant aluminium construction
- Low moment of inertia for constant velocity transmission
- One-piece structure for reliable and long-lasting performance
- Helical cut design reduces binding effects between connected shafts
Applications
- CNC machines and engraving systems
- 3D printers and stepper motor setups
- Robotics and automation projects
- Motor-to-shaft connection assemblies
- Precision linear motion and drive systems
- DIY mechanical and motion control applications
Physical Attributes
- Weight: 16g
- Dimensions: 19mm x 25mm
- Bore Diameter (Both Sides): 3mm x 6.35mm
Package Includes
- 1 × RB Aluminium Flexible Shaft Coupling 3mm x 6.35mm