19mm Outer Diameter x 25mm Length, 4mm x 8mm Inner Diameter RB Aluminium Flexible Shaft Coupling
Made from strong aluminium, this one-piece flexible coupling offers zero backlash performance, low rotational inertia, and reliable operation in compact mechanical systems. It is widely used in CNC machines, 3D printers, robotics, and motor-driven assemblies where steady torque transfer and reduced vibration are required.
19mm Outer Diameter x 25mm Length, 4mm x 8mm Inner Diameter RB Aluminium Flexible Shaft Coupling
Available:In Stock
- Product SKU: LGSTM089
₹ 149
₹ 199
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Specification
Description
19mm Outer Diameter x 25mm Length, 4mm x 8mm Inner Diameter RB Aluminium Flexible Shaft Coupling
The RB Aluminium Flexible Shaft Coupling is a compact and durable shaft connector made to join 4mm and 8mm shafts in motion control and transmission assemblies. With a 19mm outer diameter and 25mm overall length, it is suitable for systems where accurate shaft connection and smooth operation are important. Its helical beam cut design helps compensate for slight shaft misalignment while reducing stress on connected parts during use.Made from strong aluminium, this one-piece flexible coupling offers zero backlash performance, low rotational inertia, and reliable operation in compact mechanical systems. It is widely used in CNC machines, 3D printers, robotics, and motor-driven assemblies where steady torque transfer and reduced vibration are required.
Drawing

Applications
- Motor and shaft connection assemblies
- 3D printer drive mechanisms
- CNC and engraving systems
- Robotics and automation equipment
- Precision motion control setups
- DIY mechanical projects
Technical Details
- Product Type: Flexible Shaft Coupling
- Series: RB
- Material: Aluminium
- Outer Diameter: 19mm
- Total Length: 25mm
- Bore Diameter Side 1: 4mm
- Bore Diameter Side 2: 8mm
- Bore Combination: 4mm x 8mm
- Screw Type: 2 x M3
- Construction: One Piece
- Torsional Performance: Zero Backlash
Physical Attributes
- Weight: 16g
- Dimensions: 19mm x 25mm
- Bore Diameter (Both Sides): 4mm x 8mm
Package Includes
- 1 × RB Aluminium Flexible Shaft Coupling 4mm x 8mm