MHD56114 - Edition 4
11
Wire Rope Installation
(Dwg. MHP0652)
Safe Wire Rope Handling Procedures
1.
Always use gloves when handling wire rope.
2.
Never use wire rope which is frayed or kinked.
3.
Never use wire rope as a sling.
4.
Always ensure wire rope is correctly spooled and the first
layer is tight against the drum.
5.
Always follow wire rope manufacturer’s recommendations
on use and maintenance of wire rope.
Wire Rope and Fleet Angle Installation Drawing
(Dwg. MHP0498)
‘A’ = 1.6 feet (0.5 metre) per inch of drum length:
‘A’ = 11.2 feet (3.41 metres) for 7 inch drum.
‘A’ = 21.6 feet (6.58 metres) for 13-1/2 inch drum.
‘A’ = 32 feet (9.75 metres) for 20 inch drum.
‘A’ = 38.4 feet (11.7 metres) for 24 inch drum.
Notes:
1.
Maintain a minimum of 3 tight wraps of wire rope on drum at
all times.
2.
Refer to “Winch Wire Rope Storage Capacities” for
additional information.
Wire Rope Spooling
Refer to Dwg. MHP2450 on page 11.
To compensate for uneven spooling and the decrease in line pull
capacity as the drum fills up, use as short a wire rope as practical.
When rewinding apply tension to the end of the wire rope to
eliminate line slack. This helps achieve level winding and tight
spooling.
Support wire rope spool and have wire rope come off top of spool
and over top of winch drum. This will prevent damage to wire rope.
(Dwg. MHP2450)
Rigging
Make sure all wire rope blocks, tackle and fasteners have a
sufficient safety margin adequate enough to handle the required
load under all conditions. Do not allow wire rope to contact sharp
edges or make sharp bends which will cause damage to wire rope,
use a sheave
. Refer to the wire rope manufacturer's handbook for
proper sizing, use and care of wire rope.
Safe Installation Procedures
1.
Do not use wire rope as a ground (earth) for welding.
2.
Do not attach a welding electrode to winch or wire rope.
3.
Never run the wire rope over a sharp edge. Use a correctly
sized sheave.
4.
When a lead sheave is used, it must be aligned with the
center of the drum. The diameter of the lead sheave must be
at least 18 times the diameter of the wire rope. Refer to Dwg.
MHP0498 on page 11.
5.
Always maintain at least three full, tight wraps of wire rope
on the drum.
Lead Sheave
(centered on drum)
1-1/2˚
Maximum
Note 2
Note 1
‘A’
Drum
Flange
90˚
CORRECT
Wire Rope
Spooling
Wire Rope
Spooling
Wire Rope
Spooling
Spool
INCORRECT
Winch
Drum
Spool
Winch
Drum
CORRECT
Underwound
Overwound
Spool
Winch
Drum
