Crosby L-180 Winchline Tail Chain Instruction Manual

Crosby L-180 Winchline Tail Chain

• Loads may disengage from the winchline tail chain if proper procedures are not followed.
• A falling load or disengaged winchline tail chain may cause serious injury or death.
• Inspect the winchline tail chain for damage before each use.
• Wire rope should not be terminated to tail chain by the use of a knot.
• Do not attach slings or other devices to hook for overhead lifting – see operating practices.

Important Safety Information Read & Follow

• Only winchline tail chains made from alloy chain, Grade 80 or Grade 100, should be used for overhead lifting applications.
• Working Load Limit (WLL) is the maximum load in pounds that should ever be applied to a winchline tail chain.
• The Working Load Limit or Design Factor may be affected by wear, misuse, overloading, corrosion, deformation, intentional alterations, sharp corner cutting action and other use conditions.
• Never repair, alter, rework, or reshape a hook or chain by welding, heating, burning or bending.
• Recommended for IPS or XIP (EIP), RRL, FC or IWRC wire rope.
• Shock loading and extraordinary conditions must be taken into account when selecting winchline tail chains.

CAUSE FOR REMOVAL FROM SERVICE

• A winchline tail chain shall be removed from service if any of the following are visible on chain or hook:
• Wear, nicks, cracks, breaks, gouges, stretch, bend, weld splatter and discoloration from excessive temperature. Minimum thickness on chain link shall not be below the values listed on Table 1.
• Chain links and hook that do not hinge freely to adjacent links.
• Excessive pitting or corrosion on chain, hook or termination fitting.
• Makeshift fasteners, hooks, or links formed from bolts, rods, etc.

Table 1

L- 180

Stock No.

| Wire Rope Diameter (in)| Nominal Chain Size
(in)| (mm)
1091482| 1/2 – 5/8| 5/8| 16
 |  |  |
1091516| 1-1-1/8| 1| 26
 |  |  |
1091532| 1-1/4| 1-1/4| 32

• Mechanical coupling links in the body of the chain.
• Other damage would cause doubt as to the strength of the chain.
• Winchline tail chains should not be subjected to galvanizing or any plating process. If it is suspected the chain has been exposed to a chemically active environment, remove it from service.
• Termination of end attachments that are cracked, deformed or worn.
• For wire rope inspection procedures and removal from service criteria refer to the manufacturer’s recommendations.

OPERATING PRACTICES

• Know the winch lifting/pulling systems capacity rating.
• Know the applied load on tail chain. In dragging applications, the applied load may be greater or less than its weight due to friction.
• During lifting/dragging with or without the load, personnel should be alert for possible snagging.
• WORKING LOAD LIMIT (WLL) is the maximum load in pounds which should ever be applied to winchline tail chain when the chain is new or in “as-new” condition, and when the load is uniformly applied in direct tension to a straight length of chain.

Wire Rope Diameter (in)

|

L- 180

Stock No.

| Working Load Limit

3.5 to 1 Design Factor

(lb)

---|---|---
1/2 – 5/8| 1091482| 13000
 |  |
1 – 1-1/8| 1091516| 47700
 |  |
1-1/4| 1091532| 73200

5/16 thru 5/8 made from Grade 40 High Test carbon steel. 3/4 thru 1-1/4 made from Grade 80 or Grade 100 alloy steel. Only alloy tail chain should be used for overhead lifting applications.

• Wire rope termination efficiency and tail chain Working Load Limit (WLL) must be considered when selecting termination fitting and tail chain.
• The efficiency of wire rope end termination is based on the catalog breaking strength of the wire rope.

Typical Termination Method & Efficiency

Termination

S-409 Swage

| Efficiency

Button 80%

• The winchline tail chain hook is designed to fit the winchline diameter when hooked or connected back to the winchline (See Figure 1).
• When used to pull or drag a load, the winchline tail chain may be wrapped around the load and the hook connected to the winchline. Also, when used to pull or drag a load over the tail board roller, the tail chain hook may be attached directly to the load at a connection point authorized by a competent rigger (See Figure 5). In either case, visual verification of proper hook engagement is required during the entire operation.
• When used in overhead lifting applications, the winchline tail chain may be wrapped around the load and the hook connected to the winchline (See Figure 1). Used in this manner, this connection provides the same load control advantages and limitations as a single-leg wire rope sling basket or choker hitch. The winchline tail chain should contain and support the load from the sides, above the center of gravity, so the load remains under control.

This application/warning information applies to Crosby products only.

Copyright © 2022 The Crosby Group LLC All Rights Reserved

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>