Whitney No. 9 Key for Lufkin RS1818H

The Whitney No. 9 key, part number N938018, is a mechanical component used in the Lufkin RS1818H marine gear transmission. This key is specifically utilized in the pump drive assembly to ensure that rotating components remain synchronized during operation. By fitting into the keyway between a shaft and a mating component such as a gear or pulley, it facilitates the transmission of torque and prevents relative movement between the parts.

This component is manufactured by Whitney and is intended for use in the Lufkin RS1818H model. The No. 9 designation refers to the specific size and dimensional standard required for this application. Ensuring the correct fit of the key within the shaft and hub assembly is necessary for the mechanical integrity of the drive system.

Keys serve as the primary locking mechanism in rotating machinery, allowing for the transfer of rotational force from a shaft to an attached component. They are standard elements in power transmission systems, providing a secure connection that maintains alignment and prevents slippage under load.