... .Suitable for power motor, DC 5~24V 2. Outside dimension: 90mm. Shaft size: 40mm 1. Features of IHA9040 Series Incremental hollow shaft ... rotary encoder * Complete hollow shaft encoder, suitable for power motor. * Outside dimension: 90mm, or ... CO.LTD 40mm Hollow Shaft Incremental Rotary Encoder , Encoder , IHA Series Motor Encoder (IBEST)