What term describes a rigid coupling used when machines share the same bed plate?

What term describes a rigid coupling used when machines share the same bed plate?

• A. Solid coupling
• B. Flexible coupling
• C. Magnetic coupling
• D. Clutch coupling

Answer: (A)

The main idea is a coupling that has no give or flexibility, used to connect two shafts that are mounted on a common bed plate so they stay perfectly aligned and transmit torque without any slip. That rigid, solid connection is why this term fits best when machines share the same bed plate: the bases keep the shafts in exact alignment, and a solid coupling simply locks them together, offering high torque transmission with no backlash or play. Flexible couplings, by contrast, are designed to accommodate some misalignment and vibration, which isn’t ideal when you need a strictly fixed, precise alignment. Magnetic couplings transmit torque through magnetic attraction with an air gap, which introduces a non-contact connection and is used for fluid isolation or soft engagement in some cases. Clutch couplings are intended for engaging and disengaging power, not for maintaining a permanently fixed, rigid link between shafts.

The main idea is a coupling that has no give or flexibility, used to connect two shafts that are mounted on a common bed plate so they stay perfectly aligned and transmit torque without any slip. That rigid, solid connection is why this term fits best when machines share the same bed plate: the bases keep the shafts in exact alignment, and a solid coupling simply locks them together, offering high torque transmission with no backlash or play.

Flexible couplings, by contrast, are designed to accommodate some misalignment and vibration, which isn’t ideal when you need a strictly fixed, precise alignment. Magnetic couplings transmit torque through magnetic attraction with an air gap, which introduces a non-contact connection and is used for fluid isolation or soft engagement in some cases. Clutch couplings are intended for engaging and disengaging power, not for maintaining a permanently fixed, rigid link between shafts.