A hoist load chain should be checked before use for obvious damage, correct reeving and smooth travel. A detailed inspection then uses the exact hoist manufacturer's criteria for link wear, pitch or elongation, lubrication and mating parts. Remove the hoist from service when the chain is cracked, twisted, deformed, heavily corroded, heat- or chemical-damaged, binds or jumps, or cannot be confirmed within its model-specific limits. Do not keep operating it to see whether the condition worsens.
This article concerns the calibrated load-bearing chain that passes through a manual, lever or electric chain hoist. It is not the hand chain used to operate a manual hoist, loose alloy chain for making slings, or a finished chain sling. Those products have different functions and acceptance criteria. For product context, see Liftool's manual chain hoists and calibrated load chain.
Start with the hoist identity and its instructions
Record the manufacturer, model, serial number, rated capacity, number of chain falls and asset identifier before making a discard decision. Find the current operating and maintenance manual for that exact model. Similar-looking chains can have different link diameter, pitch, heat treatment, finish and dimensional limits.
Inspection frequency is not one universal interval. It depends on the hoist type, jurisdiction, service severity, environment, duty and manufacturer instructions. For covered US overhead and gantry cranes, OSHA 29 CFR 1910.179 calls for daily visual inspection of hoist chains, including end connections, and a monthly inspection with a certification record. That rule is specific to its stated US scope; it is not a schedule for every portable hoist or every country. CCOHS guidance similarly advises daily and pre-lift checks plus detailed inspection to the manufacturer's schedule under the rules that apply in Canada.
Before inspecting, unload the hoist and control it so another person cannot use it. Follow the manufacturer's isolation and access instructions. Clean only as permitted by the manual so dirt does not hide damage, and never grind, weld or reshape a link to make it look acceptable.
What to check before use
A pre-use check is a screening step, not a substitute for a periodic detailed inspection. Inspect the accessible chain and its travel path without placing yourself below a suspended load.
| Check | Look or listen for | Safe decision |
|---|---|---|
| Chain path and reeving | Twist, kink, capsized chain in a multi-fall hoist, poor seating or damaged end connection | Stop if the chain path is wrong or uncertain; correct it only by the model instructions. |
| Link surfaces | Cracks, nicks, gouges, dents, weld spatter, abrasion, corrosion, heat discoloration or chemical attack | Tag and remove the hoist from service for competent evaluation. |
| Link shape | Bent, twisted, stretched or otherwise distorted links | Do not straighten, weld or return a questionable link to use. |
| Travel | Binding, jumping, rough motion, abnormal noise or failure to enter and leave the load sheave smoothly | Stop; inspect the chain and the parts that guide or engage it. |
| Lubrication and cleanliness | Dry, contaminated or packed link contact areas | Apply only the specified lubricant and cleaning method; contamination may require further inspection. |
Columbus McKinnon's pre-operational hoist inspection guidance highlights inner-link wear, gouges, nicks, twists, broken or bent links, chemical damage, corrosion and measured stretch, and says a hoist with a concerning condition should be removed from service for trained evaluation. This is manufacturer training guidance, not a replacement for the manual or local law.
Measure wear and elongation by the model criteria
Visual condition can require removal even when a dimensional measurement appears acceptable. Conversely, a chain can exceed a wear or pitch limit without a dramatic-looking defect. Detailed inspection should expose the interlink bearing areas and measure the locations and number of links specified by the hoist maker.
Do not apply a generic percentage or a chain-sling discard table to hoist load chain. Use the manual's original dimensions, measurement method and discard values for the exact chain and hoist. A Harrington CF hand-chain-hoist manual, for example, gives product-code-specific limits for chain pitch and wire diameter and also requires inspection of the load sheave when the chain is replaced. Those figures apply to the models listed in that manual; they are evidence of why an inspector must not invent a universal limit.
Keep the measurement record tied to the hoist and chain identifier. Record the date, inspector, method, points measured, readings, applicable limit, condition found and disposition. A trend in wear can help the responsible person review inspection frequency and operating conditions, but it does not extend a discard limit.
Inspect the parts that work with the chain
Unusual wear may be caused by more than the chain. A detailed inspection should include the load sheave or pocket wheel, idle sheave on multi-fall units, chain guides, stripper, end anchorage and chain container where fitted. It should also consider hooks, blocks, bearings, housing, fasteners, brake behavior and any evidence of overload or side loading.
Replacing only the chain can leave a damaged mating part in service and mark the new chain quickly. If the chain jumps, binds or wears unevenly, identify the cause before return to service. For replacement planning, see Lever Hoist Load Chain Replacement: Compatibility and Safety Checks.
When to stop and escalate
Remove the hoist from service, identify it clearly and prevent reuse when:
- a crack, deformation, severe corrosion, heat or chemical damage is visible or suspected;
- wear, diameter, pitch or elongation reaches the exact model's discard limit;
- the chain is twisted, incorrectly reeved, binding, jumping or making abnormal noise;
- an end connection, guide, sheave or anchor is damaged or uncertain;
- the hoist has experienced an overload, shock load or unauthorized repair; or
- its identity, chain specification, inspection history or acceptance criteria cannot be verified.
A competent person should determine the repair, replacement, examination and testing required by the manufacturer and applicable rules. Do not proof-load a questionable hoist as an improvised diagnostic step, and do not replace its load chain with general-purpose chain or a chain chosen only because the nominal diameter looks similar.
For a replacement-chain enquiry, send Liftool the hoist manufacturer, model, serial number, rated capacity, number of falls, required lift, current chain part number or dimensions, operating environment and destination market. The exact hoist documentation remains the controlling source for compatibility and discard limits.