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DAYS
HOURS
MINUTES
SECONDS
 
You're currently browsing our

Chain Hoists

section within our JET Tools department
 
Operational Time Ratings at 65% Load Factor
Uniformity Dist.
Work Periods
Infrequent
Work Periods
Hoist
Duty
Typical Areas of Application
Max On
Time Min/Hr.
Max.
No.
Starts/Hr.
Max.
From
Cold Start
Max.
No.
of Starts
H1
Powerhouse and Utilities, infrequent handling, Hoists used primarily to install and service heavy equipment, loads frequently approach capacity and hoist idle for long periods between use.
7.5 min
(12.5 %)
75
15 min.
100
H2
General machine shop fabricating, assembly, storage, and warehousing; loads and utilization randomly distributed. Total running time not over 25% of work period.
7.5 min
(12.5 %)
75
15 min.
100
H3
General machine shop fabricating, assembly, storage, and warehousing; loads and utilization randomly distributed. Total running time not over 25% of work period.
15 min
(25 %)
150
30 min.
200
H4
High volume handling of heavy loads, frequently near rated load in steel warehousing, machine and fabricating shops, mills, and foundries, with total running time not over 50% of the work period. Manual or automatic cycling operations of lighter loads with rated loads infrequently handled such as in heat treating and plating operations, with total running time frequently 50% of the work period.
30 min
(50 %)
300
30 min.
300
H5
Bulk handling of material in combination with buckets, magnets, or other heavy attachments. Equipment often cab operated. Duty cycles approaching continuous operation are frequently necessary. User must specify exact details of operation, including weight of attachments.
60 min
(100 %)
600
N/A
(Note 1)
N/A
(Note 1)
Note:   (1) Not applicable since there are no infrequent work periods in Class H5 service.

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