The bearing on which end of a DC hoist motor cannot be inspected without removing it from the bedplate?

• A. Brake pulley end
• B. Gear end
• C. Armature end
• D. Commutator end

Answer: (A)

Access to a motor bearing is controlled by what’s mounted on each end. On a DC hoist motor, the end that holds the brake pulley is blocked by the brake assembly and its housing. That brake drum and pulley sit right in front of the bearing, so you can’t remove the end cap or visually inspect the bearing surface while the brake is in place and the motor is still mounted on the bedplate. To inspect that bearing properly, you have to remove the brake hardware (and typically lift the motor off the bedplate) to expose the end bearing. The other ends aren’t blocked by brake components, so their bearings can be inspected without removing the motor from the bedplate.