D-Shaped
🔧 1. D-Shaped Clamping Hub (Best Balance of Strength + Simplicity)
Why: The flat face prevents slipping; the clamp applies even pressure all around the shaft without damaging it.
Torque Handling: Very good — suitable for most high-torque hobby and light industrial setups.
2. D-Shaft Gear/Pulley with Dual Set Screws
Why: Set screws bite into the flat and round sides of the shaft. Dual screws reduce slippage.
Torque Handling: Medium-high (depends on the hub material and screw torque).