Warning – Harrington Hoists and Cranes (N)ER Hoist - ((N)ER1) User Manual
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6.2 Lubrication
6.2.1 Load
Chain
For longer life, the load chain should be lubricated.
The load chain lubrication should be accomplished after cleaning the load chain with an acid free
cleaning solution.
Apply Harrington lubricating grease (Part No. ER1BS1951) or an equivalent to industrial general
lithium grease, NLGI No. 0, to the bearing surfaces of the load chain links as indicated by the
shaded areas in
Figure 6-2
. Also apply the grease to the areas of the load chain (shaded areas in
Figure 6-2
) that contact the load sheave. Insure that the grease is applied to the contact areas in
the load sheave pockets.
Machine or gear oil (grade ISO VG 46 or 68 oil or equivalent) may be used as an alternative
lubricant but must be applied more frequently.
Figure 6-2
Chain Grease Application
The chain should be lubricated every 3 months (more frequently for heavier usage or severe
conditions).
For dusty environments, it is acceptable to substitute a dry lubricant.
6.2.2
Hooks and Suspension Components:
Hooks - Bearings should be cleaned and lubricated at least once per year for normal usage. Clean
and lubricate more frequently for heavier usage or severe conditions.
Suspension Pins - Lubricate at least twice per year for normal usage; more frequently for heavier
usage or severe conditions.
6.2.3 Gear
Box:
WARNING
Using an incorrect type/grade of gearbox oil or the wrong quantity of oil may
prevent the friction clutch from working properly and may affect the ability of the hoist to hold the
load. Refer to
Section 3.1
for the correct oil and quantity.
The oil level can be checked using the oil check hole on the side of the hoist body shown in
Figure
3-1
. The oil level should be in accordance with
Table 6-3
below.
Table 6-3
Criteria for Checking Hoist Gear Oil Level
Capacity Code
Oil Level (Hoist at level position)
Min Max
Up to and including 010M
½ “ below bottom
edge of check hole
Even with bottom
edge of check hole.
010S and Up
1“ below bottom
edge of check hole
Even with bottom
edge of check hole.