Nexen AIR CHAMP LSCC-32 User manual

1FORM NO. L-21099-K-1214
Straight-Bore Clutch
LSCC-32, 44, 54

FORM NO. L-21099-K-1214 2
Copyright 2014 Nexen Group, Inc.
Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, Minnesota 55127
ISO 9001 Certified
This document is the original, non-translated, version.
Conformity Declaration: In accordance with Appendix II B of CE Machinery Directive (2006/42/EC):
A Declaration of Incorporation of Partly Completed Machinery evaluation for the applicable EU directives
was carried out for this product in accordance with the Machinery Directive. The declaration of incorporation
is set out in writing in a separate document and can be requested if required.
This machinery is incomplete and must not be put into service until the machinery into which it is to be
incorporated has been declared in conformity with the applicable provisions of the Directive.
Read this manual carefully before installation and operation.
Follow Nexen’s instructions and integrate this unit into your
system with care. This unit should be installed, operated and
maintained by qualified personnel ONLY. Improper installation
can damage your system, cause injury or death. Comply with
all applicable codes.
DANGER
In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this
manual are subject to change without notice. Technical data listed in this manual are based on the latest information
available at the time of printing and are also subject to change without notice.
Technical Support: 800-843-7445
[phone]
www.nexengroup.com

3FORM NO. L-21099-K-1214
Table of Contents
General Specifications ----------------------------------------------------------------------------------------------------------------------- 4
General Safety Precautions ---------------------------------------------------------------------------------------------------------------- 4
Installation ----------------------------------------------------------------------------------------------------------------------------------------- 5
Lubrication ---------------------------------------------------------------------------------------------------------------------------------------- 5
Air Connections --------------------------------------------------------------------------------------------------------------------------------- 6
Operation ------------------------------------------------------------------------------------------------------------------------------------------ 6
Troubleshooting --------------------------------------------------------------------------------------------------------------------------------- 7
Maintenance:
Facing Kit ------------------------------------------------------------------------------------------------------------------------------------ 8
Repair Kit ------------------------------------------------------------------------------------------------------------------------------------- 9
Repair Kits --------------------------------------------------------------------------------------------------------------------------------------- 10
Replacement Parts --------------------------------------------------------------------------------------------------------------------------- 11
Warranty ----------------------------------------------------------------------------------------------------------------------------------------- 12

FORM NO. L-21099-K-1214 4
GENERAL SPECIFICATIONS
GENERAL SAFETY PRECAUTIONS
WARNING
This product is capable of emitting
a spark if misused therefore is not
recommended for use in any explosive
environment.
CAUTION
This product has possible pinch
points. Care should be taken when
interacting with this product.
Specifications
Torque: Up to 452 Nm ( 4000 in-lbs)
Actuation Pressure: 1 - 5.5 bar (14.5 - 80 psi)
Service Temperature: 4.5 - 104 C (40 - 220 F)
Approximate Weight: Up to 11.8 kg (26 lbs)
CAUTION
Use appropriate guarding for moving
components. Failure to guard could
result in serious bodily injury.
CAUTION
Watch for sharp features when
interacting with this product. The
parts have complex shapes and
machined edges.
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
Surface temperature may exceed
safe handling limits during
operation. Do not touch.
CAUTION
Use appropriate guarding for moving
components. Failure to guard could
result in serious bodily injury.
CAUTION
This product has possible pinch
points. Care should be taken when
interacting with this product.

5FORM NO. L-21099-K-1214
INSTALLATION
Refer to Figure 1.
1. Secure a sheave or sprocket onto the Pilot end of the
clutch using the appropriate bolts (See Table 1).
2. Insert the key onto the machine shaft keyway.
3. Slide the LSCC onto the machine shaft..
4. Secure the Clutch to the machine shaft using the three
Set Screws (Item 16).
5. Attach the airline in the six o’clock position to avoid
water from accumulating inside.
Figure 1
16
Table 1
Model LSCC-32 LSCC-44 LSCC-54
Bolt Size 1/4 - 20 1/4 - 20 5/16 - 20
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.
LUBRICATOR DRIP RATE SETTINGS
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.
LUBRICATION
CAUTION
These settings are for Nexen supplied
lubricators. If you are not using a Nexen
lubricator, calibration must follow the
manufacturer's suggested procedure.
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.

FORM NO. L-21099-K-1214 6
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 are common air supply schemes used with
this product. These are examples and not an all-inclusive
list. All air circuits to be used with this product must be
designed following ISO 4414 guidelines.
WARNING
Never exceed maximum operating
speeds listed for your product.
(See Table 2).
OPERATION
TABLE 2
CAUTION
The temperature limits for this
product line are 4.5-100 Degree
Celsius (40-220 Degree F).
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).
Maximum RPM
PSI Size 32 Size 44 Size 54
80 300 250 250
70 400 300 300
60 550 350 350
50 800 450 450
40 1000 750 750
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”.
Air
Supply
Brake
Inlet
Gauge
Regulator
Filter
Dryer
Brake Control Circuit
Quick Exhaust
Valve
3/2 (3 Way)
N.O. Valve
AIR PRESSURE:
8 BAR (120 PSI) ABSOLUTE MAX
0 BAR (0 PSI) ABSOLUTE MIN

7FORM NO. L-21099-K-1214
Springs
Friction Facings
Pilot
Retaining Ring
Retaining Ring
Hub
Bearing (Item 6)
Friction Discs
Clutch Release Bearing
(Item 10)
O-Ring
Air Chamber
Bearing (Item 6)
Retaining Ring
TROUBLESHOOTING
FIGURE 2
Symptom Probable Cause Solution
Failure to engage
Worn Friction Facings Replace the Friction Facings.
Air not getting to the Mutiple Disc.
Clutch
Check for a control valve malfunction
or low air pressure and replace the
control valve if necessary.
Air leaks around the O-ring Seals Replace the O-ring Seals
Failure to disengage Broken or weak Springs Replace the Springs.
Excessive drag Defective Ball Bearings Replace the Ball Bearings.

FORM NO. L-21099-K-1214 8
MAINTENANCE
Nexen offers two different kits to aid in the maintenance of the LSCC: a facing kit and a repair kit (See REPAIR KITS
SECTION for part numbers). The facing kit contains friction facings, steel friction plates, and springs. The repair kit
includes O-Rings and bearings.
FACING KIT
NOTE
The following tools are needed to press the unit
apart: a shaft, two sections of I-beam, and standard
retaining ring pliers.
To press the unit together, you will use a hollow shaft
fixture, making sure there is contact with the inner
race of the bearing while pressing (See Table 3 and
Figure 3).
Disassembly
ledoM ØtfahS ØtfahSwolloH beW
ssenkcihT
23-CCSL
mm8.43-4.52
]"73.1-00.1[
DI]"4.1[mm5.53 mm6.6
]"52.0[
DO]"01.2[mm3.35
44-CCSL
mm1.34-3.14
]"07.1-526.1[
DI]"08.1[mm7.54 mm2.01
]"04.0[
DO]"06.2[mm0.66
45-CCSL
8.05-1.14
]"00.2-26.1[
DI]"52.2[mm2.75 mm6.8
]"43.0[
DO]"05.3[mm9.88
Table 3
Figure 3
Shaft Ø
Web Thickness
Support the pilot end while pressing on the hub to prevent the
unit from falling to the floor.
PRESS
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.
Refer to Figure 3.
1. Remove the Retaining Ring (Item 14) from the Hub
Item 1) at the Air Chamber end of the unit.
2. Set the unit on the two pieces of I-beam with the Air
Chamber end of the unit resting on the I-beams.
3. Using an Arbor Press, align the proper shaft (as shown
in Table 3) with the Hub and apply pressure with the
Arbor Press.
NOTE
Support the pilot end of the unit as the Hub is
pressed out to prevent the unit from falling to the
floor.
4. Remove the Friction Facings (Item 4) and Friction
Plates (Item 5) along with the springs from the drive
pins.
Reassembly
5. Using a degreaser, clean both ends of the unit removing
all facing dust and grease before reassembly.
6. Reassemble the unit (Pilot end down) by replacing (in
order) the Facings, Friction Plates, and Springs on the
Drive Pins.
7. Position the unit in an Arbor Press and place the Air
Chamber/Piston combination on top of the Hub.
8. Holding the Air Chamber (Item 3) and the hollow shaft
on top of the Hub (Item 1), press the Air Chamber (Item
3) back onto the Hub using the hollow shaft fixture.
9. Insert the Retaining Ring (Item 14) back onto the Hub
(Item 1).
10. Verify that the unit is functional by applying air to the
unit and watching it engage and disengage.
14
61
215
4
17
5454
10
13
19
7
3
6
14
12
7
Figure 4

9FORM NO. L-21099-K-1214
REPAIR KIT
The repair kit replaces bearings and O-Rings.
NOTE
See Table 3 and Figure 3 for correct tools.
1. Remove the Retaining Ring (Item 14) from the Hub
(Item 1) at the Air Chamber end of the unit.
2. Set the unit on the two pieces of I-beam with the unit
sitting on the I-beams.
3. Using an Arbor Press, align the proper diameter
shaft with the Hub and apply pressure with the Arbor
Press.
NOTE
Support the pilot end of the unit as the Hub is
pressed out to prevent the unit from falling to the
floor.
4. Remove the Friction Facings (Item 4) and Friction
Plates (Item 5) along with Springs from the drive
pins.
NOTE
Take care not to lose any springs as they are not
provided in this kit.
Refer to Figures 5 & 6.
5. Carefully and Slowly apply air to the Air Chamber (Item
3) while rocking the bearing and piston combination.
The Piston (Item 11) and Bearing (Item 10) should now
be separated from Air Chamber (Item 3) housing.
6. Remove Bearing (Item 10) from Piston (Item 11).
7. Clean the new Bearing (Item 10) and Piston (Item 11)
surface and apply an adequate amount of Loctite®680
to evenly coat the outer race of the new bearing.
8. Press the new Bearing (Item 10) onto the Piston.
9. Press the Bearing (Item 6) out of the Air Chamber
(Item 3).
10. Clean the new Bearing (Item 6) and Air Chamber
(Item 3) surface and apply an adequate amount of
Loctite®680 to evenly coat the outer race of the new
bearing.
11. Install the new bearing (Item 6) into the Air Chamber
(Item 3), taking care to press on the OD of the bearing
to prevent Brinelling of the races.
12. Remove the O-Rings (Items 12 & 13) from the Piston
(Item 11) and clean the piston so it is free of any
contaminants.
13. Install new O-Rings (Items 12 & 13) and apply a
generous amount of lubrication to the O-Rings and
the Air Chamber wall it rides against.
Figure 5
10 12
13
11 3
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.
MAINTENANCE (continued)
Figure 6
3
6
14
14. Remove Retaining Rings (Item 7 & 14) from the Pilot
(Item 2) end of the unit.
15. Remove the Hub (Item 1) from the Pilot (Item 2).
16. Using the proper fixtures, press the old bearing (Item
6) out of the Pilot (Item 2).
NOTE
Be sure to use a fixture that will support the Pilot
(Item 3), keeping the pins from being damaged.
17. Clean the new Bearing (Item 6) and Pilot (Item 2)
surface and apply an adequate amount of Loctite®680
to evenly coat the outer race of the new bearing.
18. Press new Bearing (Item 6) into Pilot (Item 2).

FORM NO. L-21099-K-1214 10
Figure 8
215
444
19
55
Reassembly
Refer to Figures 3 -8.
19. Support the inner race of the pilot Bearing (Item 6)
and press the Hub into the Pilot (Item 1). Reinstall
the retaining rings.
20. Reinstall all of Friction Facings (Item 4), Friction Plates
(Item 5), Springs (Item 19) and Washers (Item 20).
21. Set the Pilot/Hub assembly on the Arbor Press and
place the Air Chamber/Piston assembly on top of the
Hub.
22. Holding the Air Chamber (Item 3) and the hollow shaft
on top of the hub, press Air Chamber back onto the
unit.
23. Insert the Retaining Ring (Item 14) onto the Hub (Item
1).
24. Verify the unit is functional by applying air to the unit
and watching it engage and disengage.
Figure 7
6
215
7
MAINTENANCE (continued)
REPAIR KITS
MODEL
LSCC-32
LSCC-44
LSCC-54
FACING KIT
923560
923552
923578
REPAIR KIT
923559
923551
923577 *
*For use on all LSCC-44 units except P/N 923606
Use Repair Kit P/N 923642 for this unit.

11 FORM NO. L-21099-K-1214
ITEM DESCRIPTION QTY ITEM DESCRIPTION QTY
1 Hub 1 12
1
O-Ring Seal 1
2 Pilot Drive Flange 1 13
1
O-Ring Seal 1
3 Air Chamber 1 14 Retaining Ring 2
4
2
Friction Facing 3 15 Dowel Pin 6
5
2
Friction Plate 2 16 Set Screw 3
6
1
Ball Bearing 2 17
2
Compression Spring 12
7 Retaining Ring 2 18 Square Key 1
10
1
Clutch Release Ball Bearing 1 19 Slotted Spring Pin 1
11 Piston 1
14
6
1
2
15
4
16
17
54
54
10
13
19
11
3
6
14
12
7
7
REPLACEMENT PARTS
FIGURE 9
1Denotes repair kit items.
2Denotes facing kit items.
The item or balloon number for all Nexen products is used
for part identification on all product parts lists, product
price lists, unit assembly drawings, bills of materials, and
instruction manuals.
When ordering replacement parts, specify model
designation, item number, part description, and quantity.
Purchase replacement parts through your local Nexen
Distributor.

FORM NO. L-21099-K-1214 12
Nexen Group, Inc.
560 Oak Grove Parkway
Vadnais Heights, MN 55127
800.843.7445
Fax: [phone]
www.nexengroup.com
ISO 9001 Certified
WARRANTY
Warranties
Nexen warrants that the Products will (a) be free from any defects in material or workmanship for a period of 12 months
from the date of shipment, and (b) will meet and perform in accordance with the specifications in any engineering drawing
specifically for the Product that is in Nexen’s current product catalogue, or that is accessible at the Nexen website, or
that is attached to this Quotation and that specifically refers to this Quotation by its number, subject in all cases to any
limitations and exclusions set out in the drawing. NEXEN MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND
ALL IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. This warranty applies only if: (a) the
Product has been installed, used and maintained in accordance with any applicable Nexen installation or maintenance
manual for the Product; (b) the alleged defect is not attributable to normal wear and tear; (c) the Product has not been
altered, misused or used for purposes other than those for which it was intended; and (d) Buyer has given written notice
of the alleged defect to Nexen, and delivered the allegedly defective Product to Nexen, within one year of the date of
shipment.
Exclusive Remedy
The exclusive remedy for the Buyer for any breach of any warranties provided in connection with this agreement will be,
at the election of Nexen: (a) repair or replacement with new, serviceably used, or reconditioned parts or products; or (b)
issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products.
Agent's Authority
Buyer agrees that no agent, employee or representative of Nexen has authority to bind Nexen to any affirmation,
representation, or warranty concerning the Products other than those warranties expressly set forth herein.
Limitation on Nexen’s Liability
TO THE EXTENT PERMITTED BY LAW NEXEN SHALL HAVE NO LIABILITY TO BUYER OR ANY OTHER PERSON
FOR INCIDENTAL DAMAGES, SPECIAL DAMAGES, CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF
ANY KIND OR NATURE WHATSOEVER, WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER
BREACH OF CONTRACT, NEGLIGENCE OR OTHER TORT, OR OTHERWISE, EVEN IF NEXEN SHALL HAVE
BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SUCH POTENTIAL LOSS OR DAMAGE. For all of
the purposes hereof, the term "consequential damages" shall include lost profits, penalties, delay damages, liquidated
damages or other damages and liabilities which Buyer shall be obligated to pay or which Buyer may incur based upon,
related to or arising out of its contracts with its customers or other third parties. In no event shall Nexen be liable for any
amount of damages in excess of amounts paid by Buyer for Products or services as to which a breach of contract has
been determined to exist. The parties expressly agree that the price for the Products and the services was determined
in consideration of the limitation on damages set forth herein and such limitation has been specifically bargained for and
constitutes an agreed allocation of risk which shall survive the determination of any court of competent jurisdiction that
any remedy herein fails of its essential purpose.
Inspection
Buyer shall inspect all shipments of Products upon arrival and shall notify Nexen in writing, of any shortages or other failures
to conform to these terms and conditions which are reasonably discoverable upon arrival without opening any carton
or box in which the Products are contained. Such notice shall be sent within 14 days following arrival. All notifications
shall be accompanied by packing slips, inspection reports and other documents necessary to support Buyer's claims. In
addition to the foregoing obligations, in the event that Buyer receives Products that Buyer did not order, Buyer shall return
the erroneously shipped Products to Nexen within thirty (30) days of the date of the invoice for such Products; Nexen will
pay reasonable freight charges for the timely return of the erroneously shipped Products, and issue a credit to Buyer for
the returned Products at the price Buyer paid for them, including any shipping expenses that Nexen charged Buyer. All
shortages, overages and nonconformities not reported to Nexen as required by this section will be deemed waived.
Limitation on Actions
No action, regardless of form, arising out of any transaction to which these terms and conditions are applicable may be
brought by the Buyer more than one year after the cause of action has accrued.