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Nexen 5H70P 917500 User Manual

Page 8

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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.