19mm Outer Diameter x 25mm Length, 4mm x 6mm Inner Diameter RB Aluminium Flexible Shaft Coupling
Made from durable aluminium, this one-piece flexible coupling offers low rotational inertia, zero backlash performance, and dependable operation in precision assemblies. It is commonly used in CNC systems, 3D printers, robotics, and motor-driven mechanisms where stable coupling and reduced vibration are required.
19mm Outer Diameter x 25mm Length, 4mm x 6mm Inner Diameter RB Aluminium Flexible Shaft Coupling
Available:In Stock
- Product SKU: LGSTM086
₹ 149
₹ 199
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Specification
Description
19mm Outer Diameter x 25mm Length, 4mm x 6mm Inner Diameter RB Aluminium Flexible Shaft Coupling
The RB Aluminium Flexible Shaft Coupling is designed for reliable connection between 4mm and 6mm shafts in compact power transmission and motion control systems. With a 19mm outer diameter and 25mm total length, it is suitable for applications where smooth shaft rotation and accurate torque transfer are important. Its helical slit construction allows the coupling to handle minor shaft misalignment while helping reduce stress on connected parts during operation.Made from durable aluminium, this one-piece flexible coupling offers low rotational inertia, zero backlash performance, and dependable operation in precision assemblies. It is commonly used in CNC systems, 3D printers, robotics, and motor-driven mechanisms where stable coupling and reduced vibration are required.
Drawing

Applications
- CNC machines and engraving setups
- 3D printer motor and lead screw assemblies
- Robotics and automation systems
- Motor-to-shaft and encoder connections
- Precision transmission and motion control systems
- DIY engineering and mechanical projects
Features
- Helical cut body helps compensate for slight shaft misalignment
- Zero backlash design supports precise rotational transmission
- Aluminium construction offers strength and corrosion resistance
- Compact design fits easily into limited installation space
- Low moment of inertia supports smooth operation
- One-piece structure provides durability and stable performance
Technical Details
- Product Type: Flexible Shaft Coupling
- Series Type: RB
- Material: Aluminium
- Outer Diameter: 19mm
- Total Length: 25mm
- Inner Diameter Side 1: 4mm
- Inner Diameter Side 2: 6mm
- Bore Combination: 4mm x 6mm
- Locking Screws: 2 x M3
- Structure: One Piece
- Torsional Property: Zero Backlash
Physical Attributes
- Weight: 16g
- Dimensions: 19mm x 25mm
- Bore Diameter (Both Sides): 4mm x 6mm
Package Includes
- 1 × RB Aluminium Flexible Shaft Coupling 4mm x 6mm