Unique-Bargains
Unique-Bargains 12mm to 8mm Aluminum Alloy Shaft Coupling Silver
Connects 12 mm and 8 mm shafts with a zero-backlash aluminium spring coupling that absorbs misalignment in light-duty drives
- Zero backlash ensures precise motion transfer via one-piece spring design
- Spring action absorbs parallel and angular misalignment plus shaft end-play
- Aluminium alloy construction provides light-to-medium duty torsionally flexible coupling
- Connects 12 mm to 8 mm shafts for encoders, lead screws and small pumps
- Compact 30 mm length and 25 mm diameter fits tight drive assemblies
12 mm to 8 mm shaft coupling
This aluminium-alloy flexible coupler joins a 12 mm shaft to an 8 mm shaft with zero backlash. Its one-piece metallic spring design absorbs parallel and angular misalignment as well as shaft end-play. Total length is 30 mm and outside diameter is 25 mm. Intended for light-to-medium torque drives such as encoders, lead screws and small pumps.
Check shaft sizes and torque needs
Verify that your driven and driving shafts measure exactly 12 mm and 8 mm respectively before ordering. Confirm the application torque falls within the light-to-medium duty range the spring element is designed for. Ensure there is 30 mm of axial space and 25 mm radial clearance at the joint. The coupling is supplied as a single unit without mounting hardware.
Suits precision motion and light drives
Builders of CNC axes, 3D-printer Z-axes, instrumentation rigs or small pump assemblies will value the backlash-free spring action. Users needing high-torque rigid transmission, keyed shafts or flanged mounting should look elsewhere. The fixed 12 mm to 8 mm bore combination also means it cannot adapt to other shaft diameters.
Highlights
- Zero backlash ensures precise motion transfer via one-piece spring design
- Spring action absorbs parallel and angular misalignment plus shaft end-play
- Aluminium alloy construction provides light-to-medium duty torsionally flexible coupling
- Connects 12 mm to 8 mm shafts for encoders, lead screws and small pumps
- Compact 30 mm length and 25 mm diameter fits tight drive assemblies
Specifications
| Brand | Unique Bargains |
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Questions about this item
Does the package include only the coupling or are fasteners and tools supplied as well?
The package contains one shaft coupling; fasteners and installation tools are not included and must be sourced separately.
When should I select the 12 mm to 8 mm size versus a different bore combination?
Choose this coupling when the driving shaft measures 12 mm and the driven shaft measures 8 mm; other bore pairs are not compatible with this model.
How does the 30 mm overall length affect installation in a compact drive assembly?
At 30 mm long and 25 mm in outside diameter the coupling fits in tight spaces while its one-piece spring design absorbs parallel and angular misalignment without adding extra components.
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