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FORM NO. L-20255-H-0822
LUBRICATION
CAUTION
LUBRICATOR DRIP RATE SETTINGS
NOTE
Nexen pneumatically actuated devices require clean, pressure regulated air for maximum performance
and life. All seals in Nexen pneumatically operated devices are lubricated for life, and do not require
additional lubrication.
However, some customers prefer to use an air line lubricator, which injects oil into the pressurized
air, forcing an oil mist into the air chamber. This is acceptable, but care must be taken to ensure once
an air mist lubrication system is used, it is continually used over the life of the product as the oil mist
may wash free the factory installed lubrication.
Locate the lubricator above and within ten feet of the product, and use low viscosity oil such as SAE-10.
Synthetic lubricants are not recommended.
Nexen product's bearings are shielded and pre-lubricated, and require no further lubrication.
These settings are for Nexen supplied
lubricators. If you are not using a Nexen
lubricator, calibration must follow the
manufacturer's suggested procedure.
1. Close and disconnect the air line from the unit.
2. Turn the Lubricator Adjustment Knob counterclockwise
three complete turns.
3. Open the air line.
4. Close the air line to the unit when a drop of oil forms
in the Lubricator Sight Gage.
5. Connect the air line to the unit.
6. Turn the Lubricator Adjustment Knob clockwise until
closed.
7. Turn the Lubricator Adjustment Knob counterclockwise
one-third turn.
8. Open the air line to the unit.
AIR CONNECTIONS
All Nexen pneumatically actuated devices require clean and
dry air, which meets or exceeds ISO 8573.1:2001 Class
4.4.3 quality.
The following is a common air supply scheme used with this
product. This is an example and not an all-inclusive list. All
air circuits to be used with this product must be designed
following ISO 4414 guidelines.
NOTE
For quick response, Nexen recommends
a quick exhaust valve and short air lines
between the Control Valves and the unit.
Align the air inlet ports to a down position
to allow condensation to drain out of the air
chambers of the product.
CAUTION
CAUTION
Low air pressure will cause slippage and
overheating. Excessive air pressure will
cause abrupt starts and stops, reducing
product life.
Due to bearing seal drag, the cylinder/piston assembly
will rotate, resulting in hose breakage when clutch is
engaged. For models 5H30(P)-SE through 5H60(P)-SE,
resting the hose against a support mounted parallel to the
clutch centerline stops this rotation. On 5H80P-SE and
5H100P-SE, where seal drag is more apparent, a 3/8-16
tapped holes is provided 180° from the air inlet. Install
a bolt or stud in this hole and rest it against a support to
relieve stress on the hose.
NOTE
Use only flexible hose or tubing when making
air line connections. Rigid pipe or tubing
connected directly to the Tooth Clutch will
prevent proper actuation of the Tooth Clutch.
Air
Supply
Brake
Inlet
Gauge
Regulator
Filter
Dryer
Typical Brake Control Circuit
3/2 (3 Way)
N.C. Valve
Quick
Exhaust Valve
AIR PRESSURE:
8 BAR (120 PSI) ABSOLUTE MAX
0 BAR (0 PSI) ABSOLUTE MIN
