OZ Lifting Products HD OZ Economy Chain Hoist OM - Manual (Page 12)

pg.12
Use the following chart to determine when the hook must be replaced. Replacement of the hook
is necessary if any of the previous page problems are found or the maximum dimensions on the
charts that follow are reached.
Chain Inspection
Inspect chain before each use. Between regular inspections visually check on a daily basis the following:
• Clean chain before inspection using a non-caustic/non-acid solvent
• Lubrication of the chain may be necessary if it binds up or is noisy
• Chain feeds smoothly into and from the hoist and does not emit cracking noise when hoisting a load
• Visually examine link by link for any nicks, gouges, weld splatter, corrosion, or distorted links pay close
attention to chain’s contact points, which may show excessive wear.
• Test hoist with load and observe operation of chain over load sheaves.
Size Standard K (mm) (in) Max K (mm) (in)
0.5 ton 28 (1.10”) 30.5 (1.20”)
1 ton 26 (1.02”) 28.5 (1.12”)
2 ton 32 (1.25”) 35 (1.37”)
Size Standard H
(mm) (in)
Min H
(mm) (in)
Standard T
(mm) (in)
Min T
(mm) (in)
.5 ton 19.1 (.75”) 17.1 (.67”) 13 (.51”) 11.7 (.46”)
1 ton 25.7 (1.01”) 23.1 (.90”) 16 (.62”) 14.4 (.56”)
2 ton 34.3 (1.35”) 30.9 (1.21”) 21 (.82”) 18.9 (.74”)
Hook throat opening
Hook lower profile
Chain wear