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NATIONAL ALUMINIUM COMPANY LIMITED - Rites

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13. Make, ratings, type of limit switches<br />

14 Effort required for manual operator, kgf<br />

15. Type of limit switches<br />

2.5 ELECTRIC HOISTS<br />

Sl. No Description<br />

1. Location<br />

2. Capacity<br />

3. Duty classification as per IS:3938 IS:3938-1983<br />

4. Total weight of hoist including electrical equipment<br />

5. Make of hoist block<br />

6. Speeds with safe working load<br />

7. Lifting height<br />

a) Above floor level<br />

b) Below floor level<br />

8. Wire ropes<br />

a) Type of construction<br />

b) Size<br />

c) Number of falls<br />

d) Factor of safety<br />

9. Rope drum<br />

a) Materials<br />

b) Diameter<br />

10. Drives<br />

11. Motors<br />

a) Type & material of gear box<br />

b) Gear & pinion<br />

c) Material & hardness<br />

a) Type & number<br />

b) Kw rating<br />

c) Synchronous speed<br />

d) Class of insulation<br />

e) Pull out torque<br />

f) Frame size<br />

12. Brakes<br />

a) Type<br />

b) size<br />

c) Torque rating<br />

13. Type & details of limit switches<br />

14. Type of couplings<br />

15. Type of bearings<br />

16. Lifting hook<br />

a) Type<br />

b) Material<br />

17. Type & details of control<br />

18. Trolley Speed with safe working load<br />

19. Wheels<br />

Technical Specification:Sec-9,Miscellaneous<br />

Page 26 of 55

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