Harrington Hoists and Cranes (N)ER Hoist - ((N)ER1) - Manual (Page 27)

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Table 5-4 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Top: _________________________
Bottom: ______________________
Capacity Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" 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
Capacity Code
“P” Dimension
inch (mm)
“d” Dimension
inch (mm)
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)