Electric hoist motor axis and roll Relationship

Wire rope hoist is a  hoist equipment  similar to a  lift hoist.   rope hoist to become part of the main motor, the motor axis installation There are many ways, each of which will bring different results, the next to explain.
1, the motor axis is perpendicular to the axis of the hoist drum worm gear used, the width aspect large size, bulky structure, processing more difficult.
2, the motor axis is parallel to the roll axis of rope hoist, the advantages of small size, height and length. The disadvantage is the track turning radius.
3, the motor mounted on the inside of the drum hoist, and its advantages for the length of the small size, compact structure. The main drawback for the motor cooling conditions are poor, poor grouping.
4, the motor mounted on the outside of the drum hoist, the advantage of the group is good, high level of generalization, lifting height is easy to change, easy installation and maintenance. Often used as a general way the motor is mounted on the roll axis outside.