Double Pass Brass Universal Adapter Coupling 2.3mm x 3mm

Double Pass Brass Universal Adapter Coupling 2.3mm × 3mm – Motor Coupler Connector

This compact motor coupler connector is engineered to join 2.3mm and 3mm shafts where smooth and aligned torque transfer is essential. Its rigid brass body ensures consistent performance, making it useful for setups involving coupling motor to pump components or small mechanisms requiring a stable motor with coupling interface. The precision-machined sleeve improves durability and maintains reliable rotation in miniature assemblies.

When assembling, insert each shaft into the matching bore and tighten the supplied M3 screws. This secure clamping method reduces slip and enhances alignment, allowing the motor coupler connector to deliver stable output in robotics, RC drive steps, and experimental transmission systems. Its corrosion-resistant exterior also ensures longevity in environments where clean movement and firm grip matter for coupling motor to pump applications or compact motor with coupling layouts.

Technical Details

• Material: Brass
• Bore Sizes: 2.3mm and 3mm
• Body Length: 20 mm
• Outer Diameter: 9 mm
• Fastening Hardware: M3 clamp screws (4 pcs)
• Coupler Style: Rigid straight sleeve
• Weight: 8 g
• Color Tone: Gold Brass

Features

• Adapts 2.3mm shafts to 3mm rotational interfaces
• Rigid for stable torque flow
• Machined brass design enhances long-term durability
• Four clamping screws improve grip on each shaft
• Useful for compact driveline setups

Applications

• Miniature robotic transmission assemblies
• Robotic transmission and micro-powertrain builds
• Prototype rotational diameter matching
• Precision instrument drive tasks
• RC and model drive assemblies 

Physical Attributes

• Coupler Length: 20 mm
• Cylinder Diameter: 9 mm
• Bore Diameters: 2.3 mm and 3 mm
• Thread Specification: M3
• Included Screws: 4 pcs
• Total Mass: 8 g
• Body Formation: Solid cylindrical sleeve
• Surface Finish: Smooth precision-machined brass

Package Includes

• 1 × Double Pass Brass Coupling (2.3mm × 3mm)
• 4 × M3 Clamp Screws