We turned down the included KOP hub and machined the inside to press fit a bearing that would fit over the fixed metal idler shaft on the motor (I think it was 5/16"). I drilled and tapped the end of the shaft on the motor (your allowed to modify the output shafts on motors <R47>), and held it all together with a number #10 screw and washer. You can just bolt whatever you like to the modified KOP hub. Just be careful with side loads because the metal shaft on the motor is not well supported.
We used this on our ball pinching system last year with V-belts. It was a low torque application and it never failed.
