Cosmos Impex Senior Engineer- Maintenance Interview Questions and Answers

VMC is a vertical milling center while HMC is a horizontal milling center.

• VMC has a vertical spindle orientation while HMC has a horizontal spindle orientation.

• VMC is ideal for drilling and milling while HMC is best for heavy-duty cutting.

• VMC is more compact and takes up less floor space than HMC.

• VMC is generally less expensive than HMC.

• Examples of VMC include Haas VF-2 and DMG Mori CMX 1100 V while examples of HMC inc

Direct drive spindle is directly connected to the motor while belt drive spindle uses a belt to transfer power.

• Direct drive spindle has higher accuracy and faster response time.

• Belt drive spindle is less expensive and easier to maintain.

• Direct drive spindle is commonly used in high-end machines while belt drive spindle is used in low to mid-range machines.

• Examples of direct drive spindle machines include Mazak Integrex...read more

There are various types of bearings used in spindle assembly including ball bearings, roller bearings, and angular contact bearings.

• Ball bearings are commonly used in spindle assemblies due to their high load capacity and low friction.

• Roller bearings are used for heavier loads and can handle both radial and axial loads.

• Angular contact bearings are used for high-speed applications and can handle both radial and axial lo...read more