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EATON Airflex® Clutches & Brakes 10M1297GP November 2012202
Dimensional and Technical Data ................................................................................................................................................. 205
Dimensional and Technical Data ................................................................................................................................................ 215
Dimensional and Technical Data ................................................................................................................................................ 225
Dimensional and Technical Data ................................................................................................................................................ 228
Clutch/Brake PackagesSection F
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CBC Clutch/Brake CombinationSection F
The Airflex® CBC clutch/brake combina-tion consists of an air-actuated discclutch and a spring-applied disc brake.Its compact design combined with itshigh thermal capacity and low air consumption makes it ideal for highspeed, high cyclic, heavy-duty industrialapplications.
The CBC hub is pressed on and keyed tothe driven shaft. The clutch disc is fastened to the driving member (a flywheel in most applications). Thebrake disc is reacted to the machine.Three different means of disc attachmentresults in five possible mounting arrangements. Operation is simple. Whenthe cylinder is pressurized, the pistonclamps the clutch disc to the hub, whichtransmits torque to the shafts. When the cylinder exhausts, the springs move thepiston shaft. Overlapping cannot occurbetween the clutching and braking.Efficient cooling permits a stable coefficient of friction resulting in repro-ducible torque control. Minimal torqueloss combined with generous friction lining area results in low operating and maintenance costs.
CBC units are available in 14 standardsizes with clutch torque to 1,140,000lb·in (129.000 N·m) and brake torque to529,000 lb·in (60.000 N·m).
Where used:
Brake Disc
Cylinder
Hub
Clutch Disc
Torque Tube & Bushing
6 standard
EATON Airflex® Clutches & Brakes 10M1297GP November 2012204
Item Description Item Description Item Description1 Hub 31 Bushing 49 Strap (sizes 30-72)2 Cylinder 32 Inner Spring 50 Long Arm Bushing (round)3 Piston 33 Plug 51 Long Arm Reaction Pin (round)5 Clutch Friction Disc 36 Short Arm Bushing (round) 52 Long Arm Bushing (rectangular)6 Brake Friction Disc 37 Short Arm Reaction Pin (round) 53 Hex Head Screw 7 Torque Tube 38 Short Arm Bushing (rectangular) 54 Long Arm Reaction Pin (square)9 Piston Seal (ID) 39 Hex Head Screw 55 Retaining Plate10 Piston Seal (OD) 40 Short Arm Reaction Pin (square) 56 Long Arm Reaction Arm11 Face Seal 41 Retaining Plate 57 Retaining Ring13 Socket Head Screw 42 Short Reaction Arm 58 Torque Tube Bushing14 Outer Spring 43 Hex Head Screw 63 Quick release Valve (not shown)17 Spring Pin 44 Hex Head Screw 64 Manual Release Screw (not shown)19 Strap 45 Washer 93 Socket Head Screw20 Socket Head Screw 46 Bushing 94 Nut22 Spring Pin 47 Nut26 Hex Head Screw 48 Retaining Ring
1
7
10
35
6219
20
22
9
11
3214 31
58
2626
31
33, (63, 64)
13
17
51, 54
50, 5255 53 57
56
47
94 94
46 46
456
4443
51, 5437, 40
50, 52 36, 3855 53
41
47
9445
39
57 48
5642
4744
436, 5
46
37, 40
36, 38
41
47
4745
39
48
42
49
93
4320
5, 646
456
49
43
20
93
Sizes 5-25 Sizes 30-72 Sizes 5-25 Sizes 30-72Long Arm Components Short Arm Components
CBC Clutch/Brake Combination
Component PartsSection F
EATON Airflex® Clutches & Brakes 10M1297GP November 2012 205
Note:
Tolerance: +0.004/-0.004 in. +0.10/-0.10 mm
Maximum bores are based on two flat English keys. Consult factory for other arrangements.
The standard CBC mounting arrangementutilizes 12 bushings (shown above) toguide each friction disc. The clutch friction disc bushings attach to the driving component. The brake frictiondisc bushings attach to a stationery reaction member. Optional mountingarrangements using arms and bushingsare shown, as well as their mountingdimensions, on the following pages.
1
1
CBC Clutch/Brake Combination –
Dimensional Data: BB ArrangementSection F
Size Airflex Rotorseal Size
30 thru 45 CBC 1RH50 & 55 CBC 1 1/4 RH
EATON Airflex® Clutches & Brakes 10M1297GP November 2012 207
Face Seal
Locking Assembly and SealRotorseal
Alternate methods of sealing air supply between theclutch/brake housing and shaft.
EATON Airflex® Clutches & Brakes 10M1297GP November 2012208
Bushing Mounting
Long Arm Mounting
L5
SS ArrangementThe clutch and brake frictions discs eachuse two short arms for mounting. Thearms are located 180° apart and are pinreacted.
BS ArrangementIn this arrangement, twelve bushings areused for clutch friction disc mounting. Two short arms are used for mounting and reacting the brake friction disc.
SL ArrangementIn this arrangement, a short pair of armsare used for mounting the clutch frictiondisc. A longer pair of arms are used formounting and reacting the brake frictiondisc.
BL ArrangementThis arrangement uses twelve bushings forclutch friction disc mounting and two longarms for mounting and reacting the brakefriction disc. K Bolt Circle for
12 Bushing Mounting
A1 for Long Arm Mounting
B1 for Long Arm Mounting
Bushing Mounting
Short Arm
Mounting
Short Arm Mounting
Short Arm Mounting
Short Arm
Mounting
O
O
L1 L4
L2
Long Arm Mounting
A for Short Arm Mounting
B for Short Arm Mounting
CBC Clutch/Brake Combination –
Optional Mounting ArrangementsSection F
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EATON Airflex® Clutches & Brakes 10M1297GP November 2012 213
Description
The press application flywheel clutch/brake package is de-signed primarily for stamping press applications. However, it can be easily adapted to other types of flywheel machines requiring cyclic operation. The major components of the pack-age are:
1. An Airflex CB or VC clutch element.
2. An Airflex CS, CSA or CTE spring-applied air-released brake.
3. A flywheel or bullgear with anti-friction bearings.
4. Clutch and brake drums.
5. Airflex quick release valves.
6. An Airflex rotorseal.
The combination or separate clutch and brake drums are keyed to the driven shaft. The bearing mounted flywheel or bullgear rides on the outside diameter of the clutch drum hub. The clutch element is attached to the flywheel or bullgear. The brake is attached to and reacted by the machine frame.
Operating air is introduced through a standard Airflex ro-torseal. Air to engage the clutch simultaneously releases the brake, allowing the driven shaft to rotate. When air pressure is released, air from the clutch exhausts through the quick release valves. The spring-applied brake engages, stopping the driven shaft.
The most frequently used mounting arrangement includes a combination clutch and brake drum as illustrated in the components parts figure. An alternate arrangement provides separate drums for the clutch and brake allowing the brake to be mounted at any convenient point along the driven shaft.
The flywheel can be grooved for drive belts and furnished with barring holes to facilitate die set-up for stamping press-es. An optional bumping pin can be provided to mechanically connect the flywheel and clutch drum for manually freeing a stuck press die. Gear teeth can be provided in the flywheel blank for crankshaft mounting the package on geared press-es.
An Airflex rotorseal is furnished with the standard package. Units are available in a large variety of sizes and mounting ar-rangements with clutch torques to 320000 lb·in (36200 N·m).
Where Used:
Can making machines
Press brakes
Shears
Stamping and forming presses
Airflex® FSPA Package DescriptionSection F
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13
11 15
6
4
2
18
1
3
8
17
16
14
9
7
5
12
Airflex® Press ApplicationSection F
Item Description
1 Flywheel or Bullgear2 Oil Seal3 Bearing4 Clutch5 Brake6 Brake Reaction Pin7 Clutch and Brake Drum8 Quick Release Valve9 Rotorseal Air Tube11 Rotorseal Air Hose12 Brake Air Hose13 Rotorseal Adapter14 Rotorseal Air Tube15 Rotorseal16 Rotorseal Air Hose17 End Plate18 Optional Bumping Pin
EATON Airflex® Clutches & Brakes 10M1297GP November 2012 215
Airflex® Press Application Packages having CB Clutch ElementsSection F, Form PP 301 — Technical Data
EATON Airflex® Clutches & Brakes 10M1297GP November 2012222
Airflex® Press Application Packages having VC Clutch ElementsSection F
Form PP 305 — Dimensional Data
Dmin
D12
D15
D13
D REF
Rotorseal
D22
H5
H
See Section G for var-ious types ofspring-applied brakeswhich can be usedwith this fly-wheel/clutch pack-age.
Notes:
� Optional belt grooving or gear teeth can be machined in the flywheel rim
at additional cost.
� Shaft radius 0.25 in (6 mm) for all sizes.
� American National Pipe Thread
1/4-18 for sizes 1127 thru 1136
1/2-14 for sizes 1431 thru 2456
1-11 1/2 for all other sizes
EATON Airflex® Clutches & Brakes 10M1297GP November 2012 223
AMCB AccuStopTM
Clutch/Brake Combination
Section F
Installation and Operation
The AMCB AccuStop™ clutch/brake unit is adaptable to new or existing flywheel drives. The hub is pressed on and keyed to the drive shaft. The clutch disc is fastened to the flywheel, and the brake disc is reacted to the machine. When the cylinder is pressurized during operation, the piston clamps the clutch disc to the hub, transmitting torque to the shaft. As the cylinder exhausts, the springs move the piston in the opposite direction, clamping the brake disc and stopping the shaft.
A maximum operating pressure of 7.0 bar (100 psi) allows for added torque when needed, and a large torque tube ensures even distribution of torque loads throughout the unit. Efficient air cooling permits a stable coefficient of friction, resulting in reproducible torque control even at maximum wear.
AMCB AccuStop™ units provide clutch torque from 9,830 N·m to 16,140 N·m at 6.0 bar (85 psi) and brake torque of 7,490 N·m.
Standard applications include:
Automatic punching machines
Press brakes
Printing machines
Shears
Stamping and forming presses
Woodworking machines
Features
The AMCB AccuStop™ unit is precision engineered and manufactured from high- performance materials to reduce maintenance time and maintain production. Standard features include:
Ductile iron cylinder for long cycle life under tough industrial conditions
Low inertia housing provides less energy per stop
maximizes cycle times
reduces friction material wear
Long life friction material results in less downtime, main-tenance and replacement cost
Consistent, stable stopping angle decreases the need for adjustments to the press
Bolted friction shoes allow for easy replacement without requiring disc removal
Designed in safety feature provides a signal at the end of friction material life and ensures torque remains to stop the operation
Engineered, self-lubricating composite bushings for quiet operation
Eaton is ISO 9001 certified
AMCB AccuStop™ design conforms to all relevant portions of ANSI B11.1 standard for metal forming presses
The Airflex AMCB AccuStop™ clutch/brake combination
consists of an air-actuated disc clutch and a spring-applied
disc brake. Engineered for small-to-medium tonnage
(40 to 400 ton), high speed, high cycle punch presses,
the AMCB AccuStop™ unit delivers high torque and low
inertia in a compact design.
EATON Airflex® Clutches & Brakes 10M1297GP November 2012224
20 1821
11
1614
24
8
2
23
15 13 1225
2622
3130
1719
27
32
1
109
6
5
47
3
Item Description
1 Cylinder 2 Piston3 Hub4 Spring Retainer5 Compression Spring6 Friction Disc Assembly7 Torque Tube8 Torque Tube Bushing9 Piston Seal (Outer)10 Piston Seal (Inner)11 Short Reaction Arm12 Long Reaction Arm13 Long Arm Bushing (Round)14 Short Arm Bushing (Round)15 Long Arm Bushing (Rectangular)
Item Description
16 Short Arm Bushing (Rectangular)17 Long Arm Reaction Pin (Round)18 Short Arm Reaction Pin (Round)19 Long Arm Reaction Pin (Square)20 Short Arm Reaction Pin (Square)21 Retaining Ring22 Retaining Ring23 Shoulder Bolt24 Shoulder Bolt25 Flat Washer26 Hexagon Nut27 Socket Head Screw30 Retaining Plate31 Hex Head Screw32 Pipe Plug
AMCB AccuStop™ Component Parts
AMCB AccuStopTM
Clutch/Brake Combination Component Parts
Section F
EATON Airflex® Clutches & Brakes 10M1297GP November 2012 225
DIMENSIONALS - METRIC UNITS (MM)*
AMCB AccuStop™ Bore Range (mm)** Model D (Min) D (Max) A A1 B B1 D1 D2 D3 d G L L1 L5 M M1
*Torque Ratings are with new linings. Reduce clutch torque by 10% and brake torque by 15% for fully worn linings.
**Maximum allowable pressure is 7.0 bar / 100 psi.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
AMCB AccuStopTM Clutch/Brake Combination Technical Data Section F
EATON Airflex® Clutches & Brakes 10M1297GP November 2012228
TECHNICAL DATA - METRIC UNITS
AMCB AccuStop™ Maximum Speed Maximum Air Brake Release Air Pressure (Bar) AMCB AccuStop™ Total Weight (Kg) AMCB Housing Inertia Model RPM* Pressure (Bar) 15 Spring Configuration Includes friction disc/arms (Kg-m2)
30
35
40
45 900 7.0 2.5 160 4.8
50
TECHNICAL DATA - ENGLISH UNITS
AMCB AccuStop™ Maximum Speed Maximum Air Brake Release Air Pressure (psi) AMCB AccuStop™ Total Weight (lb) AMCB Housing Inertia Model RPM* Pressure (psi) 15 Spring Configuration Includes friction disc/arms (lb-ft2)
30
35
40
45 900 100 36 352.7 114.4
50
*Maximum speed for non-cyclic operation. Maximum speed for single stroke operation is dependent upon clutch and brake thermal requirements.
KIT DESCRIPTION ALPHA DESIGNATION
Lining Kit KA
Element Seal Kit KB
Short Arm Kit KC
Long Arm Kit KD
AMCB ACCUSTOP™ BASIC BASIC KIT MODEL PART NUMBER PART NUMBER
30
35
40
45 146512 146512##
50
AMCB AccuStop™ Kits
AMCB AccuStop™ Assembly Numbers
AMCB ACCUSTOP™ AIRFLEX MODEL ROTORSEAL SIZE
30
35
40
45 1 RH
50
Rotorseal Size
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
This information will be available at a later date.
AMCB AccuStopTM
Clutch/Brake Combination
Section F
EATON Airflex® Clutches & Brakes 10M1297GP November 2012 229
Airflex® 21 DCB Clutch/BrakeSection F
Description and Technical Data
Description
The 21DCB combination clutch/brake package was specifi-cally designed for the can making industry to withstand the cyclic impact loads associated with high speed can extruding machinery. A patented quick release air manifold provides fast clutch/brake response; stopping the ram to prevent die damage due to material misfeed.
The unit is ideally suited for high speed continuously running machinery requiring an extremely fast stop.
The package consists of an air-actuated disc clutch and a spring-applied disc brake. The clutch disc is guided axially at its outside diameter by a series of bushings which attach to the driving flywheel. The brake disc is reacted to the machine frame by two reaction arms. The housing hub is pressed on and keyed to the driven shaft.
When the cylinder is pressurized, the piston clamps the clutch disc to the hub, transmitting torque to the shaft. When the cylinder exhausts, springs move the piston in the oppo-site direction, clamping the brake disc and stopping the shaft. Overlapping cannot occur between clutching and braking.
Technical Data
Torque Rating Mr� at 85 psi (5,9 bar)
Clutch static torque: 75000 lb·in (8475 N·m)
Brake dynamic torque: 55000 lb·in (6215 N·m)
Operating Pressure
Maximum allowable pressure pr : 85 psi (5,9 bar)
Brake releasing pressure ps : 38 psi (2,6 bar)
Maximum Speed�
1000 rpm
Inertia
Housing : 90 lb·ft2 (3,8 kg·m2)
Clutch disc : 18 lb·ft2 (0,76 kg·m2)
Weight
Housing and manifold: 290 lb (130 kg)
Each friction disc : 52 lb (24 kg)
Air Cylinder Volume�
With new linings : 55 in3 (0,8 dm3)
With worn linings: 80 in3 (1,3 dm3)
Brake Response to Full Torque
With new linings : 0.035 sec
With worn linings: 0.045 sec
Thermal Capacity
Non-Cyclic: 400000 ft·lb (542400 J)
Cyclic:
100 rpm: 1.5 HP (1,1 kW)
300 rpm: 2.1 HP (1,6 kW)
500 rpm: 2.6 HP (1,9 kW)
700 rpm: 3.1 HP (2,3 kW)
900 rpm: 3.4 HP (2,5 kW)
Notes:
� Ratings are for worn in new linings. Decrease ratings 12% for worn
linings.
� Maximum speed for non-cyclic operation. Maximum speed for single
stroke operation is dependent upon thermal requirements. Dynamic
balancing required for operating speeds over 750 rpm.
� Absolute volume required per engagement.
EATON Airflex® Clutches & Brakes 10M1297GP November 2012230