Unique-Bargains
Unique-Bargains 12mm Rigid Flange Coupling 32mm 22g
A 12 mm bore brass flange coupling with 32 mm diameter and 13 mm height for rigid motor shaft connections
- 12 mm bore fits standard motor shafts
- 32 mm flange diameter provides secure mounting
- Brass construction resists wear in drive systems
- 22 g net weight keeps rotating mass low
- M4 screw apertures simplify installation
Coupling for 12 mm shafts
This brass flange coupling joins two 12 mm cylindrical shafts in a fixed, rigid connection. The 32 mm outer diameter and 13 mm overall height keep the assembly compact for tight RC model installations. Weighing 22 g, it adds minimal mass to rotating assemblies. The M4 screw apertures provide secure fastening without additional hardware.
Rigid torque transfer under load
Because the coupling is solid brass with no flexible element, it transmits torque directly and maintains precise angular alignment during sustained operation. There is no wind-up or backlash to accumulate heat in long runs, so the joint stays dimensionally stable. The metal construction resists deformation when the motor delivers continuous power through the drivetrain.
Replaces flexible or undersized couplers
Builders moving from plastic or flexible couplings gain a stiffer, more durable joint that does not stretch or wear under repeated cycles. The step up is worthwhile when shaft alignment is already accurate and the application demands zero compliance. It is not suited for setups that require misalignment absorption or vibration damping between motor and driven load.
Highlights
- 12 mm bore fits standard motor shafts
- 32 mm flange diameter provides secure mounting
- Brass construction resists wear in drive systems
- 22 g net weight keeps rotating mass low
- M4 screw apertures simplify installation
Specifications
| Brand | Unique Bargains |
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Questions about this item
Does the 22 g brass coupling add noticeable vibration or heat to a motor running continuously?
The coupling weighs 22 g and is solid brass, so it adds minimal rotating mass and no active heat source; any vibration depends on shaft alignment rather than the coupler itself.
What shaft size and fastening method must my motor already have for this 12 mm cylindrical bore with M4 screw holes?
Your motor shaft must be 12 mm in diameter, and you will need M4 set screws or bolts to secure the coupling through its four apertures.
Will the 32 mm flange diameter and 13 mm height clear the mounting face on an older RC gearbox I plan to keep?
The flange measures 32 mm across and stands 13 mm tall, so check that your gearbox face provides at least that much diameter and axial space.
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