This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Today’s answer for high cyclic,heavy-duty industrial applications.
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).
Copyright Eaton Corporation, 2001, All Rights Reserved.
Where used:
• Automatic Punching Machines
• Press Brakes
• Printing Machines
• Shears
• Stamping and Forming Presses
• Woodworking Machines
Piston
Brake Disc
Cylinder
Brake Springs
Hub
Clutch Disc
Torque Tube & Bushing
2
CBC Clutch/Brake Combination Component Parts
Copyright Eaton Corporation, 2001, All Rights Reserved.
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
3
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
Kit Description Alpha Designation
Bushing Kit AAShort Arm Kit BBLong Arm Kit CCLining Kit DDPiston Seal Kit FF
Copyright Eaton Corporation, 2001, All Rights Reserved.
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
Copyright Eaton Corporation, 2001, All Rights Reserved.
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
Copyright Eaton Corporation, 2001, All Rights Reserved.8
CBC Clutch/Brake Combination –– Bushing and Arm Mounting Dimensions*
Ratings are with new linings. Reduce clutch torque by 10% and brake torque by 15% for fully worn linings. 2 Maximum allowable pressure 100 psi.1 2
1
1
2
Catalog A-156A2.5M801APPrinted in U.S.A.
For More Information
Eaton offers many other answers toyour clutch and brake problems.Write or call Eaton for a free copy of the Airflex 410 page engineeringcatalog which covers the complete line of Airflex clutchesand brakes. It contains descriptions, dimensions, application information and technical data over nineteen types of clutches and brakes offered by Eaton. Ask for Catalog 800.
Eaton’s worldwide network of Sales Engineers and Distributorsare ready to assist you with additional technical data orapplication information. Call the 800 number below for the name of your nearest Airflex sales office.Call: 1-800-824-1586 or FAX: 216-281-3890