70
Item Check method Criteria When failed
Opening and
Abrasion of
the Hook
• 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
Dimension a
Not to exceed the dimension at purchasing
Dimension b
Abrasion not to exceed 5%
Dimension c
•
Following tables shows the nominal standard
values. Please be aware that these values
include tolerance because of forging.
ER2 Hook Service Limit (P92) or Criteria
Replace the Hook.
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
Code Capacity
Dimension
a (mm)
Dimension b (mm) Dimension c (mm)
Standard Standard
Limit
value
Standard
Limit
value
ER2-001H/IH/HD 125kg
45.0 17.5 16.6 23.5 22.3
ER2-003S/IS/H/IH/HD 250kg
ER2-005L/IL/LD
500kg
ER2-005S/IS/SD
ER2-010L/IL/LD
1t 50.0 22.5 21.4 31.0 29.5
ER2-010S/IS/SD
ER2-015S/IS/SD 1.5t 60.0 26.5 25.2 36.5 34.7
ER2-020L/IL/LD
2t
69.0 31.5 29.9 43.5 41.3ER2-020S/IS/SD
ER2-025S/IS/SD 2.5t
ER2-028S/IS
3t 73.0 34.5 32.8 47.5 45.1
ER2-030S/IS/SD
ER2-050S/IS/SD 5t 83.0 42.5 40.4 56.0 53.2
■
Top Hook, Bottom Hook
Electric Chain Hoist (ER2) Frequent Inspection Frequent Inspection
2
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