Harrington Hoists and Cranes CF Hand Chain Hoist - Manual (Page 21)

21
Twisted Hook Hook Swivel
Figure 5-1 Top & Bottom Hook Checks
Table 5-4 Top Hook & Bottom Hook Dimensions
“k” Measured When New:
Top: _________________________
Bottom: ______________________
Product Code
Nominal "k"
Dimension*
inch (mm)
"u" Dimension
inch (mm)
"t" Dimension
inch (mm)
Standard Discard Standard Discard
CF005 1.76 (44.6) 0.67 (17.0) 0.59 (15.0) 0.47 (12.0) 0.43 (10.8)
CF010 1.92 (48.8) 0.86 (21.8) 0.79 (20.0) 0.63 (16.0) 0.57 (14.4)
CF015 2.22 (56.3) 1.04 (26.5) 0.94 (24.0) 0.79 (20.0) 0.71 (18.0)
CF020 2.36 (59.9) 1.18 (30.0) 1.06 (27.0) 0.87 (22.0) 0.78 (19.8)
CF030 2.72 (69.1) 1.48 (37.5) 1.34 (34.0) 1.06 (27.0) 0.96 (24.3)
CF050 3.06 (77.8) 1.87 (47.5) 1.69 (43.0) 1.38 (35.0) 1.24 (31.5)
* 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 Pin Hole and Top Pin Hole Wear Dimensions
Product Code
Hole Diameter (d)
Chain Pin Hole
inch (mm)
Top Pin Hole
inch (mm)
Standard Discard Standard Discard
CF005 0.252 (6.4) 0.272 (6.9) 0.480 (12.2) 0.500 (12.7)
CF010, CF020 0.319 (8.1) 0.339 (8.6) 0.480 (12.2) 0.500 (12.7)
CF015, CF030, CF050 0.350 (8.9) 0.370 (9.4) 0.638 (16.2) 0.658 (16.7)