Harrington Hoists and Cranes TNER Theater Hoist - Manual (Page 24)

Table 5-4 Chain Hook & Bottom Hook Dimensions
“k” Measured When New:
Chain: ________________________
Body: ________________________
C = Chain Hook
B = Body Hook
Capacity Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Standard Discard Standard Discard
005L
C 1.65 (42) 0.93 (23.5) 0.83 (21) 0.69 (17.5) 0.63 (16)
B 1.92 (48.8) 0.86 (21.8) 0.77 (19.6) 0.63 (16.0) 0.57 (14.4)
010L
C 1.97 (50) 1.22 (31) 1.10 (28) 0.89 (22.5) 0.79 (20)
B 2.22 (56.3) 1.04 (26.5) 0.94 (23.9) 0.77 (19.5) 0.69 (17.6)
020L
C 2.46 (62.5) 1.57 (40) 1.42 (36) 1.14 (29) 1.02 (26)
B 2.52 (64.1) 1.32 (33.5) 1.19 (30.2) 0.96 (24.3) 0.86 (21.9)
* 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
005L 3.76 (95.5) 3.82 (96.9) 0.25 (6.3) 0.22 (5.7)
010L, 020L 4.76 (121.0) 4.91 (124.6) 0.31 (8.0) 0.28 (7.2)
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