Nexen 5H70P 917500 - Manual (Page 8)

8 FORM NO. L-20008-V-0511
Although 5H Tooth Clutches are air actuated with a
maximum operating air pressure of 80 psi [5.52 bar], use
only enough air pressure to deliver ample torque for the
application. Operating air pressures in excess of 80 psi
[5.52 bar] will eventually cause accelerated bearing and
O-Ring seal damage.
Due to bearing seal drag, the cylinder/piston assembly will
rotate, resulting in hose breakage when clutch is engaged.
For models 5H30(P) through 5H60(P), resting the hose
against a support mounted parallel to the clutch centerline
stops this rotation.
On 5H70(P) and 5H80(P), where seal drag is more
apparent, a 3/8-16 tapped hole 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. On the 5H100P, a
1/2-13 tapped hole is provided.
AIR CONNECTIONS
NOTE
For quick response, Nexen recommends a quick exhaust
valve and short air lines between the Control Valves and
the product. Align the air inlet ports to a down position
to allow condensation to drain out of the air chambers
of the product.
CAUTION
Low air pressure will cause slippage and
overheating. Excessive air pressure will
cause abrupt starts and stops, reducing
product life.
All Nexen pneumatically actuated devices require clean
and dry air, which meet 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 EN983 guidelines.
OPERATION
WARNING
Never exceed maximum operating
speeds listed for your product.
(See Table 5).
CAUTION
The temperature limits for this
product line are 4.5-100 Degree
Celsius (40-220 Degree F).
TABLE 5
Size Max RPM
5H20P 4000
5H30, 5H30P 3700
5H35, 5H35P 3200
5H40, 5H40P 3000
5H45, 5H45P 3000
5H50, 5H50P 3000
5H60, 5H60P 2400
5H70, 5H70P 2000
5H80P 2000
5H100P 1000
WARNING
Ensure proper guarding of the product is
used. Nexen recommends the machine builder
design guarding in compliance with OSHA 29
CFR 1910 “Occupational Safety and Health
Hazards”.
CAUTION
Rigid pipe or tubing when connected directly
to the clutch will prevent proper actuation of
the clutch. Use only flexible hose or tubing
when making air line connections to clutch.