Flexible Mechanical Drive Coupling - 300 Series

The flexible hub or coupling is the key component responsible for transmitting rotational force (torque) from your electric motor shaft to the hydraulic pump shaft. For an inexperienced user, it acts as the "force buffer" that connects both pieces of equipment: if you were to connect them with a rigid pipe, any millimeter of misalignment would completely break the pump. This coupling, working in conjunction with its elastic spider (not included), absorbs those small alignment errors and the mechanical impacts of startup.

Each variant in this list corresponds to the Hydro-Craft 300 Series (same outer size), but the diameter of the central bore and the size of the keyway (the safety groove that prevents the coupling from slipping on the shaft) change. You only need to measure the shaft diameter of your motor or pump to choose the correct variant.

General Specifications:

• Line: 300 Series (Intermediate Transmission).

• Material: High-strength cast steel/iron.

• Component: Precision-machined individual hub.