Nexen DPC-11T 961200 - Manual (Page 10)

7 FORM NO. L-20070-F-1209
OPERATION
WARNING
Never exceed maximum operating speeds
listed for your product (See Table 5).
WARNING
Ensure proper guarding of the product is
used. Nexen recommends the machine
builder design guarding in compliance
with OSHA 29 CFR 1910 “Occupa-
tional Safety and Health Hazards.”
The temperature limits for this product line
are 4.5º - 104º C (40º-220º F).
CAUTION
CAUTION
Never exceed life of facing material. Facing
life depends on the volume of material and
the total energy over the life of the unit.
Expected life (in hrs) can be found by:
Time=
Volume /
(Power • Wear Rate)
CAUTION
Before placing the DPC Clutch into
service; verify that all screws are secured
to the proper torque (See Table 4).
The “DPC” Clutch engages when air pressure is introduced
into the Cylinder/Drive Disc. Air pressure pushes the
Cylinder/Drive Disc against the Flange Mount Disc, and
forces the Cylinder/Drive Disc in the opposite direction.
This engages the Friction Facings with the friction surfaces
of the Flange Mount Disc and the Friction Disc.
Torque is transmitted through the Cylinder/Drive Disc, and
Piston/Drive Disc Splines to the Splined Hub attached to
the Shaft with a Q.D. Bushing.
Heat generated at the friction surfaces is dissipated by
windage created by the fins on the Flange Mount Disc,
and the Friction Disc.
When air is exhausted from the Cylinder, Return Springs
pull the Piston to disengaged position.
TABLE 4 Recommended Tightening Torques
TABLE 5 Maximum Allowable Speed
Description DPC-9T DPC-11T
Shoulder Screw (Item 12)
9 ft-lbs
[12 Nm]
9 ft-lbs
[12 Nm]
Cap Screw (Item 15)
48 ft-lbs
[65 Nm] 48 ft-lbs
[65 Nm]
Cap Screw (Item 24)
13 ft-lbs
[18 Nm] 13 ft-lbs
[18 Nm]
Cap Screw (Item 28)
48 ft-lbs
[65 Nm] 48 ft-lbs
[65 Nm]
Pull-up Bolts
15 ft-lbs
[20 Nm] 30 ft-lbs
[41 Nm]
Model Outer Assembly Inner Assembly
DPC-9T 2200 RPM 3000 RPM
DPC-11T 1800 RPM 2500 RPM