Metalfab Electric Chain Hoist ER and NER Series - Manual (Page 27)

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Table 5-4 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Top: _________________________
Bottom: ______________________
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Capacity Code
Nominal "k"
Dimension*
inch (mm)
Standard Discard Standard Discard
001H, 003S, 003H,
005L, 005S
1.65 (42) 0.93 (23.5) 0.83 (21) 0.69 (17.5) 0.63 (16)
010L, 010M, 010S 1.97 (50) 1.22 (31) 1.10 (28) 0.89 (22.5) 0.79 (20)
015S 2.36 (60) 1.44 (36.5) 1.30 (33) 1.04 (26.5) 0.94 (24)
020L, 020M, 020S 2.46 (62.5) 1.57 (40) 1.42 (36) 1.14 (29) 1.02 (26)
025S 2.72 (69) 43.5 (1.71) 1.54 (39) 1.24 (31.5) 1.10 (28)
030C, 030L, 030S 2.95 (75) 1.87 (47.5) 1.69 (43) 1.36 (34.5) 1.22 (31)
050L 3.27 (83) 2.20 (56) 1.97 (50) 1.67 (42.5) 1.50 (38)
* These values are nominal since the dimension is not controlled to a tolerance. The "k"
dimension should be measured when the hook is new - this becomes a reference measurement.
Subsequent measurements are compared to this reference to make determinations about hook
deformation/stretch. See
Section 5.7 , “Hooks - Stretch”.
Table 5-5 Chain Wear Dimensions
“P” Dimension
inch (mm)
“d” Dimension
inch (mm)
Capacity Code
Standard Discard Standard Discard
001H, 003S, 2.97 (75.5) 3.02 (76.6) 0.22 (5.0) 0.18 (4.5)
003H, 005L, 005S 3.76 (95.5) 3.82 (96.9) 0.25 (6.3) 0.22 (5.7)
010L, 010M, 010S 4.76 (121.0) 4.91 (124.6) 0.31 (8.0) 0.28 (7.2)
015S, 020L, 020M,
020S, 030C 5.96 (151.5) 6.05 (153.8) 0.39 (10.0) 0.35 (9.0)
025S, 050L 6.75 (171.5) 6.85 (174.1) 0.44 (11.2) 0.40 (10.1)
030L, 030S 7.52 (191) 7.74 (196.7) 0.49 (12.5) 0.44 (11.3)