66
Item Check method Criteria When failed
Opening and
Abrasion of
the Hook
Abrasion
of the
Suspension
eye
• Check visually and measure
with vernier caliper.
c
a
Embossed mark
• Compare the dimensions of a, b
and c with those at purchasing.
Check that they are within the
criteria.
The use of the Hooks with these
dimensions exceeding the criteria
may result in bodily injury or property
damage.
Mandatory
CAUTION
Measured value (mm)
Limit value
Bottom Hook
Dimension a
Not to exceed the dimension at purchasing
Dimension b
Abrasion not to exceed 5%
Dimension c
Suspension Eye
Dimension d
Dimension e
•
Following tables shows the nominal standard
values. Please be aware that these values
include tolerance because of forging.
Guidelines on the Hook and Suspension Eye
(refer to P87) or its criteria
Replace the Hook and
Suspension eye.
Deformation,
Flaw,
Corrosion
• Check visually. • No deformation such as bend or twist
• No deep cut
• No loosened bolt or not, or their fall off
• No considerable corrosion
• No attachment of foreign matter such as
sputter
Replace the Hook.
Frequent Inspection (continued)
Chapter 2 Inspection
■
Suspension Eye, Bottom Hook
Electric Chain Hoist (EQ) Frequent Inspection Frequent Inspection
2
Code Capacity
Bottom Hook Suspension Eye
Dimension a (mm)
Dimension b (mm) Dimension c (mm) Dimension d (mm) Dimension e (mm)
Standard Standard Limit value Standard Limit value Standard Limit value Standard Limit value
EQ001IS 125kg
45.0 17.5 16.6 23.5 22.3 8.0 7.6 16.0 15.2
EQ003IS 250kg
EQ004IS 490kg
EQ005IS 500kg
EQ0101S 1t 50.0 22.5 21.4 31.0 29.5 12.3 11.7 22.0 20.9
e
d
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