NSSL Mechanical Maintenance Engineer Interview Questions, Process, and Tips

Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.

• Ball bearings: use balls to reduce friction between two surfaces

• Roller bearings: use cylindrical rollers to reduce friction

• Plain bearings: have a simple surface with no moving parts

• Fluid bearings: use a thin layer of liquid or gas to reduce friction

Types of gears include spur, helical, bevel, worm, rack and pinion, etc.

• Spur gears have straight teeth and are used for parallel shafts

• Helical gears have angled teeth for smoother operation

• Bevel gears are used for intersecting shafts

• Worm gears have a screw-like appearance and are used for high torque applications

• Rack and pinion gears convert rotational motion into linear motion

Hydraulic power pack is a device that uses hydraulic pressure to generate power for various mechanical operations.

• Hydraulic power pack consists of a hydraulic pump, reservoir, valves, and hydraulic fluid.

• The pump draws in fluid from the reservoir and pressurizes it to create hydraulic pressure.

• Valves control the flow of hydraulic fluid to different components like cylinders or motors.

• Hydraulic power packs are commonly ...read more

ATC alignment is done by adjusting the position of the tool center point relative to the machine's coordinate system.

• Ensure the machine is properly calibrated and in good working condition.

• Use a precision measuring device such as a laser tracker or a dial indicator to measure the tool center point.

• Adjust the machine's axes to align the tool center point with the desired position.

• Repeat the process until the alignment i...read more