Jet 131000 1ss-3c-10 - 1-ton capacity 10-ft 3-phase electric chain hoist User Guide
18
Inspection Procedures: Allowable Limits
Load Chain
Carefully inspect the entire load chain. Measure
five consecutive links with calipers in the manner
shown in Figure 21. Check every three feet and
especially where excessive wear is indicated. Any
load chain that shows noticeable deformation or
heat influence must be replaced with a new one.
Never extend load chain by welding a second
piece to the original.
five consecutive links with calipers in the manner
shown in Figure 21. Check every three feet and
especially where excessive wear is indicated. Any
load chain that shows noticeable deformation or
heat influence must be replaced with a new one.
Never extend load chain by welding a second
piece to the original.
Capacity
Load
Chain
5 Links
Normal
Normal
5 Links
Limit
1/2 ton
6.3x19mm
3.74”
3.8”
1 ton
8x24mm
4.72”
4.79”
2 ton
8x24mm
4.72”
4.79”
3 ton
8x24mm
4.72”
4.79”
5 ton
8x24mm
4.72”
4.79”
Hooks (Top and Bottom)
Replace the hook when the “A” or “B”
measurement, as shown in Figure 22, reaches the
limit shown in the tables below. Never heat treat
the hook or attach anything to the hook by welding.
measurement, as shown in Figure 22, reaches the
limit shown in the tables below. Never heat treat
the hook or attach anything to the hook by welding.
NOTE: Excessive hook throat opening or twist
indicates abuse or overloading of the hoist. If such
deformation is discovered, inspect the hoist, chain
and all supporting members very carefully for
additional indications of excessive hoist loading.
indicates abuse or overloading of the hoist. If such
deformation is discovered, inspect the hoist, chain
and all supporting members very carefully for
additional indications of excessive hoist loading.
Throat – “A”
Capacity
A – Normal
A – Limit
1/2 ton
1.26”
1.386”
1 ton
1.42”
1.562”
2 ton
1.73”
1.903”
3 ton
1.73”
1.903”
5 ton
1.97”
2.167”
Seat – “B”
Capacity
B – Normal
B – Limit
1/2 ton
1”
under 0.9”
1 ton
1.15”
under 1.035”
2 ton
1.56”
under 1.404”
3 ton
1.56”
under 1.404”
5 ton
1.78”
under 1.602”
Figure 21
Figure 22