Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Quality Brass
Shaft Compatibility	2mm, 3mm, 4mm, 5mm, 6mm
Type	Variable Diameter Sleeve Adapter
Application	Motor Shaft Transmission
Surface Finish	Polished
Connection Method	Set Screw Locking
Durability	Corrosion Resistant
Precision	CNC Machined
Weight	15 grams (approx.)
Package Includes	1 x Brass Coupling Connector

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Essential component for small motors

I use these for various RC car builds. The brass material ensures good heat dissipation and durability. The set screws hold firmly even under high torque conditions.

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect fit for my DIY drone project

This brass coupling is exactly what I needed to connect my motor shaft to the propeller hub. The variable diameter design made it easy to adapt different shaft sizes without buying multiple parts. Very sturdy construction.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable transmission connector

Used this in a custom conveyor belt setup. The extended connector design provides excellent stability between misaligned shafts. No vibration issues observed so far.

Anonymous

Mar 11, 2026

Rating: 3/5

Works well but instructions missing

The product itself is great, but it would be nice to have a small diagram on how to properly tighten the set screws for optimal grip. Had to figure it out through trial and error.

Anonymous

Mar 03, 2026

Rating: 5/5

Best adapter in this price range

Smooth finish and no burrs. Fits 2mm to 6mm shafts as advertised. I've ordered three more for upcoming projects. Highly recommended for hobbyists.

Anonymous

Mar 02, 2026

Rating: 4/5

Good quality but tight fit

The material feels premium and the machining is precise. It was a bit tight on the 4mm shaft initially, but after some careful adjustment, it locked in perfectly. Great value for the price.

5 FAQ

Q: Can this handle high-speed rotations?

A: Yes, the balanced design and brass material allow it to handle high-speed rotations common in RC and drone applications, provided it is installed correctly.

Q: Is there any play or wobble once tightened?

A: When the set screws are properly tightened against the flat side of the motor shaft, there should be no noticeable play or wobble.

Q: Do you offer bulk discounts for purchasing 10+ units?

A: Yes, we offer volume discounts for bulk orders. Please contact our sales team directly or add 10+ units to your cart to see the automatic discount applied.

Q: Does this coupling work with stepper motors?

A: Yes, this brass coupling is compatible with most standard stepper motors provided the shaft diameter falls within the 2mm to 6mm range.

Q: What size Allen key is needed for the set screws?

A: Typically, a 1.5mm or 2mm Allen key is required depending on the specific batch of set screws included. We recommend checking the package upon arrival.

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