CVTBTD3 is a full-radius pump shaft key listed for group 3 in the BTD gear-pump accessory document. The compatibility table identifies a 1:8 shaft taper.
The drawing distinguishes the key profile dimensions F, W, C and E, with a separate set of values for each CVTBTD model. For CVTBTD3, the printed values are F=16, W=4, C=6.5, E=1.5. The document does not state the unit of these drawing values, so they are retained as raw catalog dimensions.
No material, independent pressure rating or interchangeability with another shaft-key design is stated.
