Rigid Single Split Shaft Coupling For One-Half To Three-Eighths Inch Bore, One-And-One-Eighth Inch Outside Diameter, One-And-Three-Quarters Inch Length, Black Oxide Coated With Set Screws, Perfect For DIY 3D Printer Motors And Wheels

Rigid split shaft coupling for 1/2-3/8 bore, 1.125" OD
✔️ Bore: 1/2-3/8 in (9.5-12.7 mm); OD 1.125 in (28.6 mm); L: 1.75 in (44.5 mm); set screws

This rigid single split shaft coupling securely joins two shafts to transfer torque in compact drives. It's a popular choice for DIY projects like 3D printer motors, wheel hubs, and small gear setups where precise alignment and solid torque transfer matter.

✅ Material: 45# steel with black oxide coating for corrosion resistance
✅ Bore range: 1/2-3/8 in (9.5-12.7 mm); OD 1.125 in (28.6 mm); length 1.75 in (44.5 mm)
✅ Set screws: #8-32 x 1/2 in (12.7 mm) included
✅ Finish: black oxide coating for durability and low glare
✅ Application: ideal for connecting motors, wheels, pumps, and small drives

💡 What is a shaft coupling used for in small drive systems?

This handy overview explains the concept and best uses.

- It links two shafts to transfer torque and rotate connected parts. - It maintains alignment and minimizes backlash in compact drives. - It’s easy to install with common bore sizes and set screws.