How it Works
Warner Electric
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PCBC-1525
User Manual
30 pgs1.58 Mb0

Warner Electric PCBC-1525, PCBC-1225 User Manual

PCB-1225/1000, PCB-1525/1225
Clutch-Brake, Pin Drive, Spline Drive
PCBC-1225/1000, PCBC-1525/1225
Clutch-Brake/Coupling
P-214 819-0518
Installation Instructions
Contents
Installation Instructions
PCB-1225/1000 PCB-1525/1225 . . . . . . . . . . .3
Pin Drive
PCB-1225/1000 PCB-1525/1225 . . . . . . . . . . .8
Spline Drive
PCBC-1225/1000 PCBC-1525/1225 . . . . . . . . .9
Coil Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Burnishing and Maintenance . . . . . . . . . . . . . . .14
Illustration Drawings
PCB-1225/1000 PCB-1525/1225 . . . . . . . . . .16
Pin Drive
PCB-1225/1000 PCB-1525/1225 . . . . . . . . . .20
Spline Drive
PCBC-1225/1000 PCBC-1525/1225 . . . . . . . .24
Bushing Part Numbers . . . . . . . . . . . . . . . . . . .28
Warranty . . . . . . . . . . . . . . . . . . . . . . .Back Page
Follow the installation instructions in this manual carefully to ensure safe, reliable operation. All stated or implied manufacturer warranties are voided if this product is not installed in accordance with these instruc­tions.
Failure to follow these instructions may result in product dam­age, equipment damage, and serious or fatal injury to personnel.
PCB-1225/1000
Pin Drive
2
PCBC-1225/1000
Clutch-Brake
Magnet
Pilot diameter
Mounting Surface
Pin Drive Armatures PCB-1225/1000, PCB-1525/1225
The illustration drawings, parts lists, and exploded views for these units can be found beginning on page 16.
The brake half of the clutch/brake unit is usually installed first; however, in some cases it may be necessary to start with the clutch portion of the unit to assure a proper assembly when complete.
A. Installing the Conduit Box
Install the conduit box on the brake magnet. Instructions for this procedure can be found with conduit box.
B. Mounting the Brake Magnet
3. Once the mounting surface has been prepared, the magnet is bolted in place with capscrews and lock-washers. (See Figure 2.)
Figure 2
4. Use a dial indicator to check the unit for con­centricity and squareness to the shaft. The unit should be concentric within .010 T.I.R. and square within .006 T.I.R. (See Figure 3.)
The brake magnet is mounted to a stationary machine member by a flange. Extreme care must be taken in selecting the location for the mounting of the magnet. Proper positioning is very important for the unit to function correctly.
1. A pilot diameter on the mounting surface is essential to hold the magnet within the required tolerances. (See Figure 1.)
Figure 3
C. Assembling the Clutch Magnet and Magnet Hub
1. Insert the lead wires through the rubber terminal caps and into the collector ring. The shorter wire goes into the hole in the front of the ring (the side that will be mounted to the magnet). The longer wire goes through the ring and into the hole in the back.
2. A machined pilot diameter is provided on the
Warner Electric • 800-825-9050 P-214 • 819-0518
Figure 1
magnet mounting flange (refer to illustration drawings, page 16) to aid in the proper position­ing of the magnet.
3
Press the bullet-type connectors firmly into
Short
Wire
Collector
Ring
Terminal
Cap
Long
Wire
place. (See Figure 4.)
The autogap accessory is a double spring device which allows for automatic armature clearance and adjustment for wear. The smaller or conical spring pushes the armature from the magnet face, leaving a gap of about 1/32 inch, while the straight spring automatically follows up for wear. This combination maintains maximum performance efficiency through­out the life of the unit.
The assembly procedure for the autogap accessory is as follows (see Figure 6).
Figure 4
2. Mount the magnet to the magnet hub using capscrews and lockwashers. (See Figure 5.)
Armature
Boss
Straight
Spring (White)
Detent Spring
Retainer
Detent Spring
Armature
Retainer Ring
Drive
Pin
Figure 6
Step 1
Place the straight springs (white) over armature bosses on the back side of the armature. (Figure 7)
Heavy Spring
(Red)
Figure 5
3. Secure the lead wires to the magnet terminals with screws and lockwashers.
4. Pull the rubber caps over the terminals
D. Assembling the Brake Armature and Magnet Hub
Figure 7
Assemble the armature to the magnet hub with the autogap mounting accessory.
4
Step 2
Compress the heavy (red) spring on each drive pin by sliding detent spring towards the head of the pin. (Figure 8)
Figure 8
Step 3
Insert assembled drive pins through armature (entering from segmented side), through straight (white) springs, and into magnet hub. (Figure 9)
Step 5
Check to see that the armature is completely com­pressed against the face of the hub.
Step 6
To set the autogap, slide the detent spring retain­ers against the armature face. (Figure 10)
Figure 10
Note: This position must not be disturbed during completion of assembly.
Figure 9
®
Note: Apply Grade "AA" Loctite
Sealant on pin
threads.
Step 4
Tighten the pins until the shoulders of the pins are against the face of the hub. Since threads are class No. 3 fit, pins may seem to bind.
The straight springs must not
get caught under shoulders of drive pins.
E. Mounting the Magnet-Hub-Armature Assembly
This assembly is mounted on the shaft with a taperlock bushing. All parts must be clean and free from burrs and chips before assembling.
1. Place the bushing into the hub, and insert the key. The key is a side-to-side fit and should not contact the top of the keyway.
2. Insert the locking setscrews loosely into the bushing, and slide the assembly onto the shaft.
Warner Electric • 800-825-9050 P-214 • 819-0518
5
3. Position the assembly to allow a gap of about
A
C
D
B
1-9/32"
5/16"
2-1/4"
1/2"–13 UNC–3A Threads
+.0005"
.6185"
Dia.
–.0010"
1/32-inch between the brake magnet and arma­ture faces. (Figure 11)
3.750
Removable plug in ends for 1/2" con-
duit.
.358/.338 dia. (6) holes
7.687 Max.
equally spaced on 6.125 dia.*
5.378/5.376 Pilot Dia.
.358/.338 dia. (8) holes equally
spaced on 10.625 dia.*
11.500/11.498 Pilot Dia.
Figure 11
Once this gap is set, it will be automatically maintained for the life of the unit.
Note: For pin drive armatures (normal duty), con­tinue to F. on page 7. For spline drive armatures (heavy duty), proceed to F. on page 7.
F. Assembling the Clutch Armature
1. A customer may wish to use the autogap accessory to mount a clutch armature to his own pulley, hub, gear, etc. Follow the illustrated dimensions (Figures 12 & 13) to properly adapt these parts to the armature.
4. Secure the assembly in this position on the shaft by alternately tightening each setscrew. During the tightening process, the bushing should be tapped lightly to make certain it seats-in properly.
Machining Instructions for Gear, Sprocket, or Pulley
Figure 13
a. Chordal dimensions "A" and "C" must be
held for all chords between pin holes.
b. Drill 27/64-inch diameter holes to a sufficient
Unit Size ABCD
1000 4.548 ± .002 5.252 ± .002
1225 4.155 ± .002 5.877 ± .002
1525 6.010 ± .002 8.500 ± .002
6
Figure 12
depth and tap for 1/2-13 NC-3 1-1/8-inch
1/32-inch
Clutch Magnet
Armature
minimum full threads. Pin holes must be square with plane of mounting surface and magnet mounting.
c. Ream .501/.500 to a 3/8-inch depth and to
be concentric with tapped holes.
3. The armature and customer supplied pulley, sprocket, or hub can be held in position on the shaft by (a) retainer rings, (b) set collars, (c) a shoulder on the shaft, or (d) any combination of these. The best method will depend on the characteristics of each application.
2. Once the pulley, gear, etc., has been adapted to the armature according to the above direc­tions, it may be mounted to the armature using the autogap accessory.
The procedure is the same as described for the brake armature (Step D, page 4), except that the clutch armature is mounted with four drive pins instead of three as shown in the illustra­tion.
G. Mounting the Clutch Armature
1. Slide the armature and customer supplied pul­ley, sprocket, or hub assembly onto the shaft.
2. Adjust the armature's position to allow a 1/32" gap between the magnet and armature faces. (See Figure 14.)
H. Mounting the Brushholder
1. The brushholder is mounted on a bracket which must be furnished by the customer. The bracket must be firmly secured to prevent vibration which could cause improper contact between the brushes and collector ring.
2. The distance from the centerline of the shaft to the top of the brushholder should be 5-3/4". Maintaining this distance will assure proper spring tension on the brushes and maximum wear follow-up. A detailed dimensional drawing is included with each brushholder.
Figure 14
Once this gap is set, it will be automatically maintained for the life of the unit.
Warner Electric • 800-825-9050 P-214 • 819-0518
7
PCB-1225/1000, PCB-1525/1225
1/32-inch
Clutch Magnet
Armature
Clutch-Brake Spline Drive Armature
The illustration drawings, parts lists, and exploded views for these units can be found beginning on page 20.
2. A customer may mount the clutch armature to his own pulley, hub, gear, etc. Refer to the illus­tration drawings, "End View of the Armature," page 20, for the dimensional information need­ed to drill and tap holes in the customer part.
Refer to the installation instructions for pin drive armature units, page 3, for steps A-E.
F. Assembling the Spline Drive Clutch Armature
1. These clutch/brake units contain spline drive armatures and hubs. The armatures are shipped with a built-in autogap spring accessory. This device automatically maintains a gap of about 1/32 inch between the armature and magnet faces for the life of the unit.
The spline drive armature assembly is shipped with the armature, splined armature adapter, and autogap already assembled. The splined hub and capscrew accessories are shipped as separate parts.
Follow these instructions to assemble the splined armature assembly and hub:
The splined hub pilot diameter must be concen­tric with the splined armature center of rotation within .010 T.I.R.
3. Mount the armature to the customer's part using the capscrew accessory provided.
Maintain a 1/16-inch clearance between the armature adapter and the customer part after the parts have been assembled.
G. Mounting the Clutch Armature Assembly
1. Slide the complete armature assembly on to the shaft.
2. Adjust the armature's position to allow a 1/16­inch gap between the magnet and armature faces. (Figure 13)
a. Place the armature-adapter assembly on a
flat surface with the segmented side up.
b. Push the splined hub, with the pilot diameter
down (refer to illustration drawings) through the autogap spring and splined armature adapter. (Figure 12)
Figure 12
Figure 13
3. Secure the armature and customer supplies pulley, sprocket or hub assembly in position by a) retainer rings, b) set collars, c) shoulder on the shaft, or d) any combination of these. The best method will depend on the characteristics of each application.
8
4. When the armature is secure on the shaft, push
Magnet
Pilot diameter
Mounting Surface
the armature against the magnet face. When the armature is released, it will spring back about 1/32-inch. This gap will be automatically maintained for the life of the unit.
H. Mounting the Brushholder
1. The brushholder is mounted on a bracket which must be furnished by the customer. The bracket must be firmly secured to prevent vibration
Clutch-Brake Coupling PCBC-1225/1000 PCBC-1525/1225
The illustration drawings, parts lists, and exploded views for these units can be found beginning on page 24.
which could cause improper contact between the brushes and collector ring.
2. The distance from the centerline of the shaft to the top of the brushholder should be 5-3/4". Maintaining this distance will assure proper spring tension on the brushes and maximum wear follow-up. A detailed dimensional drawing is included with each brushholder.
The brake half of the clutch/brake unit is usually installed first; however, in some cases it may be necessary to start with the clutch portion of the unit to assure a proper assembly when complete.
A. Installing the Conduit Box
Install the conduit box on the brake magnet. Instructions for this procedure can be found with conduit box.
B. Mounting the Brake Magnet
The brake magnet is mounted to a stationary machine member by a flange. Extreme care must be taken in selecting the location for the mounting of the magnet. Proper positioning is very important for the unit to function correctly.
1. A pilot diameter on the mounting surface is essential to hold the magnet within the required tolerances. (See Figure 1.)
Figure 1
2. A machined pilot diameter is provided on the magnet mounting flange (refer to illustration drawings) to aid in the proper positioning of the magnet.
3. Once the mounting surface has been prepared, the magnet is bolted in place with capscrews and lockwashers. (See Figure 2.)
Warner Electric • 800-825-9050 P-214 • 819-0518
Figure 2
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