Flange or bearingmounted styles > The SFCSeries clutch couplingsemploy the same basic components as the SF design except for a splined hub andadapter which serves as acoupling for in-line shaft applications. The SF design eliminatescollector rings and brush- holder. Ideal for adverse environmental conditions. Mounting tolerances are generally more critical than the PC design. > Current is carried throughbrushes and the collector ringto the rotating magnet. The PC design is less expensive than the SF design. > The PCCSeries clutchcouplings employ the same basic components as the PC design except...

Page 146 Page 188 Brake Primary style clutch/brake > The PB Series brakes consist of amagnet, armature and mounting hub in a very simple and extremely compact design. The PCBSeries clutch-brakescombine a PC clutch and a PB brake into one compact design. Application Application > A clutch-brake is used to combinethe functions of a clutch and a brake in a compact assembly. A brake is used when arotatingload is tobe stopped. Page 208 Motor Brake Stationary Field Clutch/BrakeCoupling > MB motor brakes arecomposed of a PB Series brake mounted on a NEMA C-face adapter and coverassembly. The SFPBCclutch/brake...

Available in various voltages for each model.Warner Electric controls (see controls section) provide optimum performance and controllability. All Warner Electric units are either UL listed or recognized. All are CSA certified. > Fluted and segmented. Designed as a cooling device to dissipate maximum heat and increase life. > Brake magnet mounts to anymachine member. WarnerElectric clutches are availablein flange mount or bearingmount designs. > Standard industry bushingsare used in all the larger sizes to meet your shaft size requirement. Several bore sizes are available as standard in each of...

The Autogap is a system designed toseparate the armature from the frictionface. This spacing is automatic and occurs prior to total magnetic decay, effectively eliminating noise by prevent-ing drag. The leaf springs which attach armature to hub pull the armatureback sharply when the coil is deenergized, providing positive disengagement. Wear, heat, and noise caused by dragging armatures are eliminated. > In Normal Duty units the autogap isincorporated as part of the drive pin assembly. In Heavy Duty units the autogap is incorporated as part of thearmature/splined hub assembly.The key advantage...

PC-50040 lb. ft.63-1/472 PCC-50040 lb. ft.64-1/4134, 136 PC-825125 lb. ft.9-1/43-1/274, 76 PCC-825125 lb. ft.9-1/44-3/8138 PC-1000240 lb. ft.10-7/83-7/878, 80 PCC-1000240 lb. ft.10-7/85-7/8140 PC-1225465 lb. ft.12-7/84-1/282, 84 PCC-1225465 lb. ft.12-7/86-1/2142 PC-1525700 lb. ft.16-1/84-3/486, 88 PCC-1525700 lb. ft.16-1/86-3/4144 ND = Normal DutyHD = Heavy Duty HT = Hi TorqueND = Normal DutyHD = Heavy Duty >

ND = Normal DutyHD = Heavy Duty ND = Normal DutyHD = Heavy Duty >

Based on Load Inertia and Time The formula to use when calculatingclutch torque requirement based onmotor HP is:5,250 x HP x 2.75*T = ֖֖֖֖֖֖֖֖N What is the average torque required todecelerate a total load of 1.0 lb.ft. Example Based on Inertia and Time =308t WR > 2 NT > av Where: WR > 2 = inertial load in terms of lb.ft. > 2 referred to at the unit location.N = RPM t= time allowed for the engagement Tav = Average Torque (lb.ft.) This formula gives us the torque (T) andis the average amount of torque required to accelerate a part from rest to a rotation of N revolutions per minute,about its axis,...

Torque and HorsepowerRelationship Example:FindTc: > When selecting clutches and brakesWarner Electric disregards efficiency or frictional losses in pulley, sprocket or gearing drive trains. Torque on a clutch or brake will be greater or lesser than the torque at the motor shaft based on the speed differencesbetween the motor shaft and the shaft where the clutch or brake is located. This is an inverse 1:1 relationship. A clutch at the slow speed side of a 10:1 ratio speed reduction will need to accelerate 10 times the torque as a clutch at the motor shaft. Conversely, a clutch at the high speed...

Warner Electric custom design brakesand clutches are economical to purchase and simple to install. They consist of components which must be assembled on the shaft and properly attached to the machine frame.Various customer furnished drivecomponents must be assembled with the brake or clutch. Pulleys, sprockets and bearings/pillow blocks for shafting may be essential elements of a complete drive system. Squareness andconcentricity tolerances are specified where critical to properclutch/brake functioning.The illustrations show SF, PC and PCBunits mounted with customer supplied bearing mounted pulley....

Left handed or right handed Taperlock bushing installation L.H.R.H. Taperlock bushingenters from magnet side. Mounting screws accessible from magnet size only.Taperlockbushing enters from opposite side. PC Clutch PCC Clutch Coupling > Typical Installation(Left hand hub shown) Typical Installation Inside mount Outside Mount > Mounting screws for the magnet areaccessible from inside the magnet only. Mounting screws for the magnet areaccessible on the outside of the magnet. Outside mounted units cost slightly more. PB Brake > Typical Installation PCB Clutch/Brake SFPBC Clutch/Brake Coupling PCBC...

For Bore sizessee chart below. For Bore sizessee chart below. .500 .515 >

.629.086 (Std.).094 (Anti.) Std. Arm. .484 (Std.).390(Anti.) For Bore sizes see chart below. .632Max. .633 1.093 1.906 Max. >

1.437 1.125 For Bore & Keyway sizessee chart below. For Bore & Keywaysizes see chart below. 2.625Max. Dia. 1.376 .750Dia. .609Dia. 1.375Dia. >

For Bore & Keyway sizessee chart below. Removable plug inends for 1/2" conduit. .296/.280 dia. (4) holes equally spaced on5.000 dia. Mounting holes are within .010 of true position relative to pilot diameter. 455.6255.623Pilot Dia. 4.250 Sq. 1.546 .937 3.562 >