X A 63 H25TVT X series Universal Worm Gear Reducer A Shaft input. 19mm j6 tolerance x 30mm, M8x20 tapped end, 6mm seated key. 63mm Size, distance from center of worm wheel bore to center of worm. Ratio 5, 10, 15, 20, 25, 30, 40, 50, 65, 80, 100 to 1 ratios standard. H25 Output Bore 25mm, to H7 ground tolerance, hollow bore with 8mm wide keyway. Orientation Universal orientation B3, B6, B8, V5, V6, B7 same no vent design. Synthetic Lubed Shell Omala S4 WE 320