HOW TO SELECT AND INSTALL electric MOTORS for for ................................
CRAFTSMAN
There is a CRAFTSMAN MOTOR for every need
A Motor Is Better Than Muscles .....
Yesterday, every household, farm and production task had to be done the hard way — by physical labor. Jobs like heating and refrigeration, sharpen ing tools carpet sweeping, loading a silo — even the simple necessity of drawing water — all requited muscles ... and lots of your own energy, to get them done.
Today, silent, efficient dependable electric motors do all these chores - and hundreds more. Motors are used for just about every kind of work: Garbage disposal, dishwashing, polishing - and heavy-duty labor and production jobs too numerous to mention. Count the electric motors serving you. You'll be surprised at the number.
With The RIGHT CRAFTSMAN MOTOR
As wonderfully designed and miracle-working as most motors are, there are limits to the size of load that each can carry — to the neglect and abuse that each can suffer without, damage. You don't expect too much of your muscles. It's just as unreasonable to ask more of a motor than it is designed to give.
Before putting your new motor to work do it and yourself — the favor of learning something about it. Read this booklet. It tells you how to judge whether or not you have the right motor for your job. It also tells you how to install and maintain your motor so that it will serve you faithfully and tirelessly
SEARS MAKES Your Selection Of THE Motor F
BECAUSE Sears Motor Line for the Workshop. Home, Farm-for tools, appliances and machines - is complete . a better motor at the best price for each and every job.
Over 90% of the homes, offices, farms and small businesses (excluding only "heavy" and specialized industries) in the U.S. are furnished electrical power that requires the use of one or another of the kinds of motors in Sears Motor
Copyright 1970 by Sears, Roebuck and Co.
Line. Also, the great majority of jobs to be done in all these places need motors of the exact types and sizes available at Sears. For convenience. we divide these into four groups, as shown at the bottom of this page. Un-
THE Motor Easy
• BECAUSE Sears Information and the Identification Data with each motor make it a quick and simple matter for you to select the exact right motor for your job.
less your job requires a "tailor-built" motor the chances are better than 9 to 1 that you will find the right motor in one of these four Sears classifications
Because there are four different groups, with many sizes in each group
your task of finding the right motor might still be difficult, except for the help Sears gives you. Sears Selection and Identification Data make your selection easy. This booklet will also help.
|
IF SPECIAL SELEC
BECOMES NECESS (Pages 14-15) |
CTION
SARY |
HOW TO I
ELECTRICAL I (Pages |
NSTALL —
REQUIREMENTS : 16-19) |
|
|
1 &
RS |
HOW TO INSTALL –
PHYSICAL REQUIREMENTS (Pages 20-21) |
MOTOR
ACCE (Page |
AND TOOL
SSORIES s 22-25) |
SPECIFIC MOTOR
APPLICATIONS (Pages 26-31) |
| 3 |
WHY THERE ARE DIFFER ENT KINDS OF MOTORS
Commercial electricity is manufactured by Power Company generators and transnorted by wires in the form of current. There are different kinds. DC (direct current) electricity "flows" (like water in a pipe) always in one direction: AC (alternating current) electricity "flows" out then back in equal amounts. Both currents travel at 186,000 miles per sec. - but AC can be made to change its direction with different rapidity (frequency). If it changes 120 times per sec. (so that it makes 60 round trips - out, and back to generator - per sec.) we call it 60-cvcle AC. Also used are 25- and 50-cycle
In addition to different frequencies AC is
SERIES-WOUND DC TYPE
AC REPULSION TYPE
AC INDUCTION TYPE (Already Running)
POTATING FIELD
COMMUTATOR
also supplied in different phases Singlebhase AC is one current occurving the wires by itself. Polyphase AC is two or more separate currents (from two or more generators) flowing together in the same wires but with the periods of cycling staggered. For instance, 3-phase AC consists of three currents changing their di-
Every current requires a circuit, an unbroken "nath" from the generator to the device using the electricity, and back to the generator. This circuit is formed by conductors (usually wires) enclosed by non-conductors. The amount of current "flowing" in a conductor at any instant is
measured in amberes (A or ambs) like water is measured in gallons. The force that "pushes" the current is measured in volts (V) like water pressure is measured in lbs so-in. When a current of 1A is pushed by a force of 1V (1Ax1V) an amount of work designated as 1 Watt (W) will be done. Power companies sell electricity by the Kilowalt Hour - a unit equivalent to 1,000 watts of work in an hour
Power companies supply current at certain standardized voltages. However, the wires to distance. Despite the use of devices to keep voltage constant in the power lines,
there usually is a voltage drop at the point where a current is put to work Hence the standard furnished voltages are correctly stated as 115V (approx.), 230V (approx.), and 440V (approx.).
Generally, a 2-wire service (into a building) indicates 115V 60-cycles singlenhase AC: 3 wires can be 230V ditto (especially in a city) which can be split to make two 115V circuits ... or it can be 3-phase, 60-cycle AC at 230V or 440V (especially in rural areas). There are, of course, exceptions. Over 90% of the service to U.S. homes, offices, farms and small businesses is single-phase, 60cycle AC, cither at 115V or 230V.
EACH TYPE OF MOTOR IS DESIGNED FOR A PURPOSE
DIRECT-CURRENT MOTORS
The earliest kind, DC motors are still used for some purposes.
In a simple, Series Wound DC motor, current "flows" through the wires of a new (stationary part) then urough wires on an arma- ture (rotating part). It is conducted to the armature by brushes which rub a commutator on the shaft. In "flowing" it makes the which rup a commutator on the shalt. In "Howing" it makes the field and armature into magnets having north (N) holes and south (S) poles with like poles adjacent. But like poles repel south (5) poles with like poles adjacent. But like poles repel each other - so the armature rotates 180° to place the unlike poles (which attract each other) adjacent. However, each time the armature rotates 180° the commutator reverses current flow through the armature so that adjacent poles are again alike. Hence the armature continutes to rotate
The above motor will vary inspeed with variations in the voltage and the load placed on it, but is powerful at starting. There are
SINGLE-PHASE AC MOTOPS
AC motors are of 4 basic types, but for practical purposes we will consider only the Repussion and mauction types . The other 2 are: Series-Wound (see Universal Motors), and Synchroneus (used mostly for clocks).
REPULSION MOTOR
This is like the Series-Wound DC motor - except that the brushes are connected together, instead of in series with the field. When process called induction . Therefore, the motor will run without the supply current flowing through the armature. It has a powerful starting ability, due to the brushes - but (also due to it is limited in use — and Sears does not carry this type
INDUCTION MOTOR
When the Repulsion motor (above) is running, a flux (magnetic out the aid of brushes and a commutator. These parts can be now called a rotor and the field is called a stator. Some rotors
are wire wound; some (squirrel-cage type) simply have a series of copper bars embedded in a soft iron core, or are diecast
The induction motor has big advantages over other types: It variations, up to the limit of capacity; and is very efficient. But it is not self-starting so various starting devices are used:
A SPLIT-PHASE motor is an induction motor with a starting winding added to the stator, and arranged to be cut out by a
added to reduce the starting current required and increase the
A SHADED-POLE motor is a variation of the Split-Phase motor.
A REPULSION-INDUCTION motor is a Repulsion motor with a centrifugal switch to cut out the brushes after starting. In some STARTIN types the brushes are also lifted off the commutator. This motor WINDING motor but running as an Induction motor.
POLYPHASE (3-PHASE) AC MOTORS
A 3-PHASE motor is "strictly" an Induction type. It uses 3-phase induction motors consolidated into one - with the added advantage other two are not at their "peak pull" during 1/3 of a cycle, while the
UNIVERSAL MOTORS
These are really Series-Wound AC motors designed to perform
well on both single-phase AC and DC. Because they will develop
CAPACITOR-START INDUCTION TYPE
SPECIAL FEATURES
Typical of Sears Power-Tool and General-Purpose Motors
LIFETIME LUBRICATION
All ball-bearing motors have bearings sealed in with a special formula, top-quality grease that assures long, trouble-free service.
The 2-pole sleeve-bearing motors are fitted with 100% felt wicking that holds a large reserve of oil in suspension and distributes oil over bearing surface. Oil slingers on shaft prevent leakage.
Both above types require no lubrication throughout normal motor life.
LEAK-PROOF OILER
General-purpose sleeve-bearing motors have a new type oil-cup plug securely fitted into the end shield to provide constant pressure between the felt wick and motor shaft. Plug is self-sealing, leakproof; the improved wick and packing assure ample oil storage and uniform distribution.
EXTRA COOL OPERATION
Either an extra large "booster" fan with baffles or two fans - one at each end - provide positive motor cooling. The resulting uniform, top-efficient cooling helps prevent motor hurnout
TOUGH MYLAR INSULATION
Has 35 times greater moisture resistance and 8 times greater physical strength than ordinary insulation . gives maximum protection.
DEPENDABLE STARTING
Improved type centrifugal governors assure "sure-fire" starts — every time and longer trouble-free life.
NEMA-TYPE BASES
All motors have NEMA standard mounting bases... which assures easy, simple application on any equipment manufactured with provisions for NEMA-type mounting.
PERFORMANCE TESTED
Each motor is individually tested before it is packed to ensure maximum performance and quality. Each design of motor is built to perform at the very top of its NEMA band rating ... thus ensuring
full rated HP and performance.
ANY POSITION OPERATION
New, improved oil retention designs of all sleeve-bearing motors now makes it unnecessary to mount such motors upright. With this new feature all Sears motors (sleeve as well as ball bearing) can be mounted in any position . with shaft up, down, or at any angle!
BUILT-IN GROUND LUG & CONDUIT CONNECTION
These make it easy to make permanent ground connection and/or conduit line connections.
LIGHT-WEIGHT, HEAVY-DUTY CONSTRUCTION
Streamline designs reduce weight up to 30o... but increase ruggedness and service life of motors. 2-pole models have fully guarded, strong die-cast shells. Other models have new full-size, straight shafts that provide larger bearing surfaces ... also, improved rotor design that eliminates all electrical noises.
CUSTOM ENGINEERED
Each motor is custom designed for a specific line of applications. No compromises are necessary with this complete Sears line. There is a motor designed for every job.
DUST-PROOF SWITCH
Sawdust, lint and other foreign matter cannot cause motorfailure because all vital contact points are permanently shielded and protected. This important feature gives Sears fractional hp motors a marked superiority for many tool, appliance and blower applications.
QUICK-CONNECT TERMINALS
Simplified, readily accessible terminal board with plug-in, quick-connect wiring tabs cut wiring time in half. These make it easy to reverse rotation or to change for voltage on models designed for 115/230V.
WHY SEARS MOTOR LINE IS COMPLETE FOR OVER 90% OF AVERAGE NEEDS
As told on pages 4-5 there are two major types of current (AC and DC) and many variations of each type ... each requiring a different motor design. However, over 90% of the homes, offices, farms and small businesses in the U.S. are serviced with just one type of current, 115/230V, singlephase, 60-cycle AC.
run on this one type of current and to do all the many different kinds of work that motors do. Included are motors for hard-starting tools and appliances, medium-starting tools and appliances, appliances requiring special motors, for heavy-duty industrial use, and for economical operation of very heavy farm and industrial equipment. Sizes range from 1/4 hp to 1 hp in the popular types... and up to 75 hp in the "heavy-work" types.
Sears Motor Line includes all the various kinds of motors designed to
MOTOR IDENTIFICATION DATA IS AN ADDED SAFEGUARD
КОТОР КАМЕРLАТЕ
Every Sears motor is properly and clearly identified by a nameplate giving the motor model number and all the pertinent electrical data relating to the specific motor. Instructions packaged with each motor further identify it... and give all necessary information for wiring to the motor, mounting, maintenance, etc.
Contained in each carton there is a piece of literature on which are listed the various uses for which the motor is recommended. An identification tag attached to the motor lists the features which adapt it for these end uses; and the nameplate data is repeated on the end of the carton. You can't go wrong!
ALWAYS BUY CRAFTSMAN FOR THE BEST AT A BETTER PRICE
FAN AND BLOWER MOTORS
MORE PERFORMANCE AT LOWER COST
Sears split-phase fan and blower motors offer maximum power at lowest replacement cost These features are built-in every motor to assure best possible. long-life operation of equipment: Full 1/3 hp capacity . Automatic reset overload protector . Mount in any position (flexible NEMA mounting) . Leakproof sleeve bearings . Reversible rotation . Single-end 1/2-in. flattened shaft with 5/8-in.adapter; through bolt for direct-drive fans. Available in single-speed. 1725 rpm models with Nos 48 and 56 frames: and 2-speed 1140/1725 rpm model with No. 56 frame. For 110-120V.60 cvc. AC.
SEARS MOTORS REPLACE OTHER MAKES RATED FROM 1/8 UP TO 1/3 HP
TYPICAL USES
Window Fans Attic Fans Room Air Conditioner Blowers Belted Fans and Blowers Evaporative Coolers
SEARS POWER - TOOL AND GENERAL - PURPOSE MOTORS
HIGH-TORQUE CAPACITOR TYPES
Capacitor-start motors have extra torque for hard-to-start loads. All models have No. 56 frames; mount in any position . and are reversible. Most types (A and B) are available in ball-bearing and sleevebearing models. Ball-bearing motors provide smoother, quieter operation.
Some models have overload protectors and operate on 110-120/230V; others are for 110-120V only. Also, some models have double-end shafts; others have single-end shafts.
MEDIUM-TORQUE SPLIT-PHASE TYPES
These are all 4-pole (1725 rpm) Split-Phase Motors, as described on page 5 . for nottoo-hard to start loads where high starting current is no problem. All are for 110-120V, 60cycle AC, and have sleeve bearings, 4-ft. 3-wire cords with plug and adapter, and through bolts for end-bell mounting. These motors are easily reversed and have flexible No. 56 mountings for quiet operation – mount in any position.
TYPICAL USES
TYPICAL USES 1/3 HP
Planer-Jointers to 4-3/8" Drill Presses to 1/4" Fans to 21" Diameter Air Comp. to 1 cu-ft./min. Feed Mixers to 3-cu-ft. Pumps to 400 gpm at 10 ft.
1/2 HP Jointer-Planers to 6-1/8" Thickness Planers to 6" Wood Shapers Comb. Belt-Disc Sanders Paint Sprayers All Flexible Shafts Air Comp. to 1-1/2 cu-ft./min Port. Concrete Mixers
3/4 HP Bench Saws to 8" Drill Presses to 1/2" Metal Lathes to 12" Fans to 42" Diameter Air Comp. to 2-1/2 cu-ft./min. Pumps to 1000 gpm at 10 ft. Larger Sprayers
Bench Saws to 12" Thickness Planer, 12-1/4" 18" Band Saw Insect Sprayers to 1-1/2 gpm Work Bench Line Shafts
All hp recommendations are minimum requirements. Higher hp motors can be used if desired.
1/2 HP Fans & Blowers to 36" Diameter Air Compressors to
1/3 HP, RESIL. BASE 36" Fans & Blowers to 24" Diameter Air Compressors under
Wood Lathes, 12" Swing<br/>12" Band SawDisc S<br/>Grinde<br/>under12" Disc Sander<br/>12" Disc SanderJig Saw<br/>Jig Saw12" Disc Sander<br/>Drill Presses, under 3/8"<br/>Wet Grindstone<br/>Grinders & Buffers to<br/>8" Diameter<br/>All HacksawsDisc S<br/>Grinder<br/>All Gem Makers
1/4 HP
Disc Sanders under 12" Grinders & Buffers under 8" Diameter Jig Saws under 18" Small Wood Lathes Drill Presses to 1/4" Fans & Blowers to 18" Diameter Air Compressors to 1/2 cu-ft/min.
HEAVY-DUTY FARM & INDUSTRIAL MOTORS
All motors in this group have ercebtional starting and overload capacities - for the big loads that can waste current and bog down with the wrong types of motors. All are CI (capacitor-start, inductionrun) designed to produce starting torques up to 350% of full-load capacity.
Sizes range from 1/3 to 7-1/2 hp. The 2 hp size is available in 1725 and 3450 rpm models; all other sizes are 1725 rpm. All models up through 2 hp operate on 110-120/230V: larger sizes. on 230V
only. All models have manualreset overload protectors, singleend shaft, lifetime-lubricated ball bearings, are reversible, and mount in any position.
Available in both Open-Ventilated and TEFC (totally-enclosed fancooled) types. The latter can be used indoor or outdoor under all weather conditions. Use either type for severe farm and industrial installations ..... wherever hard starting loads are incurred.
IF SPECIAL SELECTION
HORSEPOWER (HP)
TYPE OF CURRENT
Consider the electrical and physical characteristics required, and Consider the electrical and physical characteristics required, and choose a motor accordingly. Always buy a motor as big or bigger (in horsepower) than called for. Extra horsepower, within reason, never horsepower) than called for. Extra norsepower, within re hurts; too little horsepower can result in inefficiency and size (in HP).
ELECTRICAL CHARACTERISTICS
These will usually be found on the motor nameplate.
If you push a car from a standing start on a level road, it takes an extra effort to start the car, then a smaller (but steady) effort to keep it rolling -----------------------------------with occasional spurts of extra effort (again) as the car rolls over bumps. It's the same with a motor attached to a load. Therefore a motor is said to be capable of so much starting torque (push) so much running torque and so much overload torque. Breakdown torque (its maximum push, beyond which it stalls) is also used.
Motor torque is measured by horsepower. The rated HP of a motor is its running torque at normal running speed. That is a motor rated at 2 HP can pull with the strength of two horses — for all of its life. At starting or when required to give an extra spurt of effort, it is said to be overloaded - and the safe overload capacity of a motor is usually stated as so many (say 2 or 5) times the rated HP. But this overload capacity is only a tempo rary one because a motor heats up rapidly, and may burn out, if overloaded
It is very important to most motors whether you connect them to DC or AC
whether AC is single-, 2- or 3-phase — and whether the voltage is 115 or some other amount. Each is generally designed to run on a certain current with voltage of approximately a certain amount. Actually, there is a loss of voltage in power lines and Power Companies cannot always deliver exact voltages Therefore, most motors are made to allow 10% voltage variation without harm but the voltage should not be allowed to drop more than this (ex.
cept that R-I and 3-Phase Motors can stand greater drops)
"Feeding" a motor a wrong current or wrong voltage will, at best, reduce its efficiency and life — at worst, can burn it up. It is particularly dangerous to an Induction motor to connect it to a DC line
Just as you need a certain amount of food to keep going, so a motor needs a continuous supply of amos. And like you, when it works hardest, it needs
an extra amount. Therefore, we say that a motor requires so many amps STARTING AND RUNNING at starting (or for temporary overloads), and so many (generally only 1/2 to
AMDS ...
If you connect to the right power supply you needn't worry about having enough amps; but you do have to think about the size wires you use between the power source and your motor (wires that are too small can't carry enough amps). When choosing these wires, be sure to have them big enough to carry the starting ambs, not just the running amps
Induction-type motors run at practically constant speed (unless so overloaded as to stall) - and each is therefore rated according to the rpm (revo lutions per minute) which its shaft will turn. The two commonest are ap-
prox. 1725 and 3450 rpm. You can, of course, obtain higher or lower speeds at the equipment by using various pulley sizes or gears; but it is often inconvenient to change an arrangement already planned for you by the manu-
facturer. Therefore, it's best to get a motor with the recommended rpm.
For the same reason, you can avoid trouble by getting a motor that re volves in the right direction (clockwise or counterclockwise). However, this
Though seldom indicated on a namenlate you may have heard these terms They refer to the "heating characteristics" of a motor. Every motor heats up as it runs (temperature rise) This rise is not critical unless a motor is over as it runs (temperature rise). This rise is not critical unless a motor is over-loaded too long — in which case it may overheat and burn out Special purpose motors are sometimes built to run a while, then stop and cool a while - in which case running time is stated.
BECOMES NECESSARY
N.E.M.A. means National Electrical Manufacturers' Association - the or ALE MAA. means that on a letter that and addition of motor ratings and die WHAT IS MEANT BY NEMA
PHYSICAL CHARACTERISTICS
The physical characteristics of a motor (its size, shape, etc.) can be just as important as its electrical characteristics, if it must fit a certain space or drive a specifically designed piece of equipment. Some of a motor's physical characteristics are listed in catalog specifications - others must be observed by looking at the motor, and perhaps by taking measurements.
SIZE AND SHAPE
Obviously if you have limited space in which to install your motor size and shape are very important. Not only must you consider whether or not All motors require a free circulation of air to keep from overheating Don't squeeze one into a space so tight that it will "suffocate" in its own heat!
TYPE AND SIZE OF BASE
Different motors are provided with different types of mounting arrange ments. Usually, you can adapt a motor to most any special mounting ments: Ostany, you can adapt a motor to most any special mounting requirement (if there's room): but much time and trouble can be saved by getting
HEIGHT OF SHAFT
When considering the type of base, consider also the height at which the shaft sets above the base. If it is too high, you may have difficulty locating the motor so that it can be connected to your equipment.
KIND OF SHAFT FND
Motor shafts come in different sizes (1/2 in., 3/8 in., etc.) — and are of different types. For securing a pulley or tool to be driven by the motor, a shaft is generally slotted — for a key — or flattened (beyeled) for use with set screws. Special shafts have detents (depressions for set screws), threads holes (for pins), etc. If you don't have the right shaft, it's difficult to con-
Some motors have a shaft at each end (instead of just one end) - which
may be quite an advantage for certain purposes.
TYPE OF REARINCS
Generally, there are two types of bearings: Ball and Sleeve. The ball and longer... are usually sealed in grease so that no lubrication is mounting position since the oil cup must be above the bearing. How-
THERMAL OVERLOAD PROTECTOR
When a motor becomes overloaded, it meets the increased demand for power by drawing a higher amperage. This can go on until it is overloaded to the
point of stalling — and it will then draw an excessive amperage, so much (in fact) that either the motor or the wires to it will burn up if this condition is
not corrected. A fuse in the circuit to the motor will correct this condition, by "blowing" to open the circuit.
Some motors, however, have a built-in thermal overload protector, which acts like a fuse to open the circuit, but is more convenient. Two kinds are acts like a ruse to open the circuit, but is more convenient. I wo kinds are used: 1) Automatic Reset (which closes the circuit again when motor has cooled sufficiently); and 2) Manual Reset (which can be closed by hand when the motor is cool enough).
SPECIAL HOUSINGS
The average motor housing is built to provide good protection for the motor (from dust and dirt) under normal conditions of motor operation around a home, office or plant. However, special conditions must sometimes
be met — as when a motor must run in the presence of explosive fume (around a gasoline depot). Housings designed for every conceivable specia condition are available — but, remember, you must order them specifically
HOW TO INSTALL YOUR MOTOR
FLECTRICAL REQUIREMENTS
USE LARGE ENOUGH WIRE SWITCHES ETC.
Importance of "Safe" Size
All wires and electrical devices (switches receptacles, etc.) are designed to carry up to a specified load (no, of amps). Overloads may: 1) Cause wires or devices to burn out — with danger of fire: 2) Cause excessive voltage drop (loss of voltage at motor) so that motor runs inefficiently, overheats, and could burn out. Voltage drop should be held to 5% max. for R-I and 3-Phase motors; to 2% max. for all other motors.
Figuring Loads
For a motor, use the "Amps" shown on nameplate -and add 30% for safety. Other appliances are usually rated in watts Amps - watts (i.e.: a 60
watt bulb on a 115V circuit = 60 - 0.5+amps).
Selecting Devices and Wires
Devices are labeled in amps. Wires are rated by diameters with AWG (Am. Wire Gage) Nos: by type (of covering): and by length. A wire may be just right to carry a certain load for (say) 50 ft: but not to carry it 100 ft. Reason: the longer a wire is the greater the voltage drop at its end
| 1.00 | ||||
|---|---|---|---|---|
|
Wire
Size {AWG) |
Armored or Non-
Metallic Cable — or Indoor Wire in Conduit |
Indoor Wire
(Knob & Tube) |
Outside
Wiring |
|
| - | 16 | 20 | 20 | |
| æ | 14 | 15 | 20 | 30 |
| 4 | 12 | 20 | 25 | 40 |
| Ξ | 10 | 30 | 40 | 55 |
| W | 8 | 45 | 55 | 70 |
| 2 | 6 | 65 | 80 | 100 |
| Æ | 4 | 85 | 105 | 130 |
| 3GE | 2 | 115 | 140 | 175 |
| A | 1 | 130 | 165 | 205 |
| 4 | 0 | 150 | 195 | 235 |
size for each added 50 (or 100) ff, or fraction thereof. Never
A SMALL ENOUCH FUSE
Every motor deserves the protection of an individual fuse or circuit breaker designed to "blow" before motor can be damaged. Because the starting amps required are much greater than the normal running amps, a standard fuse big enough not to blow every time motor starts is much too big to protect motor against burn out from continuous overloading. Therefore, only a Time-Lag type of fuse will protect your motor. Use one rated the same as the "Amps" on motor nameplate, plus not more than 25%. On 115/230V circuits, use 2 fuses; use 3 on a 3-phase circuit.
FLISES ARE CHEAPER THAN MOTORSI
MAKING CONNECTIONS AT MOTOR
Your Sears motor will have a cord and plug, or a conduit box with colored wire leads inside it. If there are leads, splice them to the circuit wires according to wiring diagram on motor
CONNECTING TO AN EXISTING CIRCUIT
Before plugging-in or splicing a motor branch cir-if there are no other motors or heating appliances cuit to an existing circuit, check the wire (etc.) sizes - and check the load already on the circuit.
1. Some appliances will be OFF while others are ON Just total the amps for those which could he ON simultaneously
2. A 1/4 or 1/2 HP motor can generally be added to an average household circuit without overload. ing it — and a ½ or ¾ HP motor probably can
on the circuit. Larger motors usually require a separate circuit.
3. Open the circuit by removing the fuse (or fuses) which controls it.
4. If circuit has a standard fuse(s), substitute Time-Lag fuse(s), or install one in the separate line to motor - unless motor has built-in overload protection.
300 0-1000 200 (5-150 i0-550 5-50 150 350 50-10(
|
TOTALING
FOR THE CI ITEM Clock Toaster Lamp A Lamp B Wash. Mach. TOTAL |
RCUIT | |
|---|---|---|
| E RATI | ||
|
CLOCK
CLOCK UGHT A UGHT A UGHT A WASHING MACHINE |
Clathes Dryer
Coal Stoker Coffee Maker Distwasher Elec. Blanket Fan-Toble -Ventilating Fluores. Tubes Food Mixer Freezer (home Grill (large) Heater-Water -Room Iron Ironer Light Bulbs Radio-Phono. Range (kitcheg Refrigerator Roaster (large Shaver Stove (table) Television Toaster (auta) Vacuum Chr. Waffle Iron Wash. Machin |
1
1 1 1 1 1 1 1 1 1 1 1 1 1 |
| SWITCH MOTOR OUTLET TO WHICH |
1-PHASE
AC MOTORS HP |
NORM
A |
| A TYPICAL HOUSEHOLD CIRCUIT |
1/6
1/4 1/3 1/2 |
3.2
4.6 5.6 7.4 |
|
1
1 ½ 2 |
10.2
13.0 18.4 24.0 |
PROVIDING A NEW BRANCH CIRCUIT
A new branch circuit is one starting at your entrance switch — and may be installed if switch has provision for an additional circuit. Just remember:
1. If spare terminals are exposed and you can connect to entrance switch without disassembling it, simply open the switch to simultaneously shut off all house current . If you must disassemble switch or touch any wire leading into it , first have Power Co. shut off your service.
2. Complete the new wiring before connecting it to entrance switch.
3. Check to see that spare terminals in entrance switch are intended to carry load you will connect to them. Usually, fuse sizes are indicated on the switch cover — and you can tell from this.
4. If motor will operate on 115/230V, choose 230V whenever possible.
TYPICAL 220V BRANCH
In a 230V circuit the white (neutral) wire should be grounded to each outlet box, switch box (etc.) – and to each motor housing, as shown. However, 2-wire circuits can be used (omitting neutral wire) if neutral wire is grounded at entrance switch – and if each box and motor housing is also properly grounded.
FROM TO OTHER FROM TO OTHER OURCE TO OTHER
PROVIDING A NEW MAIN CIRCUIT
If the existing circuits and entrance switch are loaded to capacity — or if you need 230V and have only 115V — you will have to install a new service switch connected directly to the Power Co. lines.
this conveniently near the existing entrance switch. Complete all wiring from new switch to motor .
2. Have Power Co. connect new switch to their line — or have them shut off the power while you
make the connection.
3. If lines entering original switch are large enough (Power Co. will advise), you can connect new switch to these lines inside the original switch, as shown. Otherwise, you must provide new leadin wiring to a Service Entrance Head (or Yardpole, on a farm). Complete instructions are given in Sears' booklet "Electric Wiring for Home or Farm" on sale in our Elect. Appliances Dept. for a small sum.
SAFETY NOTES
Never work with existing wires or equipment without first making certain power is OFF .
ment — or doing any wiring.
Avoid long extension cords — they are subject to damage.
For wiring in barns (where dampness and manure fumes rapidly deteriorate ordinary wires and metal) we recommend use of our Single Wire
Trench Cable with Knob and Tube installation together with Bakelite Surface Wiring Devices. Open wiring permits frequent inspection.
Never install devices where someone must stand in dampness or close to machinery to operate them.
In stringing long wires remember to support weight of wire properly — and allow slack to take up the contraction of wire in cold weather.
PHYSICAL MOUNTING REQUIREMENTS
PRE-MOUNTING CHECK
To check against shipping damage, rotate the shaft with your fingers — it should turn freely. Now operate the motor without load — it should run smoothly with a low electrical hum.
SELECTING LOCATION
Locate motor where it will be as dry and cool as possible. Do not expose it to weather, nor enclose it so that it doesn't get free air circulation. (Wire screens around a motor may become clogged and shut off circulation). Also, don't install it where possible sparks could ignite grain dust or similar inflammables — unless it is a special enclosed type.
MOUNTING
Bronze bearing motors should be mount-ed borizontally — to prevent the oil from draining out of the oil cups. Ball bearing motors may be mounted in any position.
If quiet operation is desired, motor may be mounted on rubber or spring cushions — but this will cause it to "float" and is not advisable when exact shaft alignment is required.
There are two methods of maintaining belt tension. 1) Use the motor base slots, and slide the motor to tighten the belt. 2) Use a motor rail as illustrated. In either case, make the retaining bolts secure.
MEASURING FOR V-BELTS
You can measure with string or tape around the outside edges (not in the grooves) of the motor pulley and driven pulley — to obtain belt length. Length can also be figured as shown in accompanying illustration.
A belt should be just tight enough so that finger pressure midway between pulleys will deflect it about ¼ inch. If too loose, slippage of the pulleys will wear it out. If too tight, it increases motor load and wear on the bearings.
SELECTING PULLEYS
V-pulleys are measured from edge to edge ( not in groove ). The following table gives you the speeds of driven pulleys when using various combinations of drive and driven pulley sizes (in inches).
| DIAM. | - | C | AMETER | OF PULLE | Y ON MA | CHINE, I | NCHES | - | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PULLEY | 11/4 | 11/2 | 13/4 | 2 | 21/4 | 21/2 | 3 | 4 | 5 | 61/2 | 8 | 10 | 12 | 15 | 18 |
| 1¼ | 1725 | 1435 | 1230 | 1075 | 950 | 850 | 715 | 540 | 430 | 330 | 265 | 215 | 175 | 140 | 1 |
| 11/2 | 2075 | 1725 | 1475 | 1290 | 1140 | 1030 | 850 | 645 | 515 | 395 | 320 | 265 | 215 | 170 | 1. |
| 11/4 | 2400 | 2000 | 1725 | 1500 | 1340 | 1200 | 1000 | 750 | 600 | 460 | 375 | 315 | 250 | 200 | 1 |
| 2 | 2775 | 2290 | 1970 | 1725 | 1530 | 1375 | 1145 | 850 | 685 | 530 | 430 | 345 | 285 | 230 | 1 |
| 21/4 | 3100 | 2580 | 2200 | 1930 | 1725 | 1550 | 1290 | 965 | 775 | 595 | 485 | 385 | 325 | 255 | 2 |
| 21/2 | 3450 | 2870 | 2460 | 2150 | 1900 | 1725 | 1435 | 1075 | 850 | 660 | 540 | 430 | 355 | 285 | 2 |
| 3 | 4140 | 3450 | 2950 | 2580 | 2290 | 2070 | 1725 | 1290 | 1070 | 800 | 615 | 515 | 430 | 345 | 2 |
| 4 | 5500 | 4575 | 3950 | 3450 | 3060 | 2775 | 2295 | 1725 | 1375 | 1060 | 860 | 700 | 575 | 460 | 3 |
| 5 | 6850 | 5750 | 4920 | 4300 | 3825 | 3450 | 2865 | 2150 | 1725 | 1325 | 1075 | 860 | 715 | 575 | 4 |
| 61/2 | 8950 | 7475 | 6400 | 5600 | 4975 | 4480 | 3730 | 2790 | 2240 | 1725 | 1400 | 1120 | 930 | 745 | 6 |
| 8 | 9200 | 7870 | 6900 | 6125 | 5520 | 4600 | 3450 | 2750 | 2120 | 1725 | 1375 | 1140 | 915 | 7 | |
| 0 | 9850 | 8620 | 7670 | 6900 | 5750 | 4300 | 3450 | 2650 | 2150 | 1725 | 1430 | 1140 | 9 | ||
| 2 | 9200 | 8280 | 6900 | 5160 | 4130 | 3180 | 2580 | 2075 | 1725 | 1375 | 11 | ||||
| 5 | 8635 | 6470 | 5170 | 3970 | 3230 | 2580 | 2150 | 1725 | 14 | ||||||
| 8 | 7750 | 6200 | 4770 | 3880 | 3100 | 2580 | 2070 | 17 |
DRIVEN pulley speed based on use of a 1,725 rpm notor. For a 3,450 rpm motor double the speeds listed. The formula for figuring speeds is:
Dia. of Drive Pulley Speed of Machine Dia. of Driven Pulley Speed of Motor
PRECAUTIONS THAT WILL SAVE YOUR MOTOR
DON'T OVERLOAD MOTOR
Overloading a motor can burn it out. Don't expect it to run continuously overloaded.
DON'T LET VOLTAGE DROP
When voltage at motor drops, exactly the same thing happens as when the motor is overloaded. With too little "fuel" it is (in effect) overworked — heats up — and will burn out. Use ample size wiring.
DON'T "SUFFOCATE" MOTOR
If free circulation of air to a motor is restricted (by dirt, rags or paper, or closing it up in a box) it overheats — may burn out. Keep motor clean , and dry.
If used where wood chips, dust, etc. can enter inside, blow out the interior with dry compressed air — or use a vacuum cleaner.
GROUND MOTOR PROPERLY
The motor frame should be connected, by wire of same size used in fine to motor, to a suitable ground (water pipes or a grounding rod properly installed) — both to protect you, and to protect the motor in case of an internal short circuit.
LUBRICATE MOTOR PROPERLY
Motors with bronze bearings do require occasional - but not too frequent or excessive - lubrication. It's best to check yearly and add a few drops each time. Too much oil can cause trouble by getting out of the bearing into the motor.
USE RE-SET PROPERLY
If you have an overload protector with a manual reset button, always wait for motor to cool before using the re-set. Never hammer the re-set (if it seems to "stick"), as this will break off the switch parts. Any trouble with re-setting will probably be due to dust between the contacts — and blowing away the dust, or simply holding the button in firmly, will correct this.
MOTOR ACCESSORIES..
MATCHED FRACTIONAL H.P. V-BELTS ANOTHER
CRAFTSMAN MATCHED V-BELTS
Compression section has special compound to maintain rigidity.
High-tensile rayon cord coated with rubber compound.
Blend of natural and synthetic rubbers in the tension section.
High-twist fabric, neoprene impregnated.
THEY PULL TOGETHER OR REPLACE EACH OTHER - PRECISELY
Extra-duty, slip-resistant Craftsman V-Belts are so exactly matched for size that a new one will replace an old one without need for readjustment. Then, too,
any two or more belts used in a multiple drive will pull equally, each doing its share. One will not carry all the load while the other(s) slip, and wear. To be assured of matched belts use the matching code numbers printed on belts. Match last nos. printed on belts, or use adjacent nos. (18 and 19, 19 and 20, 20 and 21) to make-up sets. Never use more than two consecutive nos. in one set.
Craftsman belts are also the finest for wearability ... they are pre-stretched to fit firmly down in pulley grooves, are water-, heat- and oil-resistant.
PRECISION-MACHINED CRAFTSMAN V-PULLEYS
All Craftsman V-pulleys are scientifically designed and perfectly balanced, with machined (not simply cast-in) grooves that grip the belts smoothly and firmly to prevent belt slippage and wear. This also guarantees steady, efficient power transmission, and longer belt life. The bores are accurately reamed for exact shaft fitting.
Special, tapered-bushing pulleys will fit their shafts firmly and easily, even though shaft is slightly over- or undersized . . and can be broken loose quickly even from a rusted shaft.
Available in hubbed and hubless, single-groove types and hubbed 3 or 4 step-cone types — all in die-cast zinc alloy . also in cast-iron single-groove types with easy-off bushings and multi-groove cast iron.
.. for Better, Easier Installations
LINE SHAFTS AND ACCESSORIES
1 – Rigid Coupling 2 – Line Shaft Collar 3 – Steel Shaft
4 – Pillow Block 5 – Flexible Coupling 6 – Cup Oiler
Machine Steel Shafting is available in suitable lengths in 1/2-in., 5/8in. and 3/4-in. diameters for use with 1/2 to 1-1/2 hp motors for driving two or more tools (or machines) with one motor. The Flexible Coupling connects the motor shaft to the line shaft, and is self-aligning to compensate for misalignment of motor mounting.
Rigid Couplings are used to add additional lengths of shafting. The Pillow Blocks are used at intervals to support the shaft – from below, above or the side. Collars keep the shaft from drifting. Use these accessories to economically power several tools which are not used often enough to require individual motors.
FLOATING MOTOR RAILS
For motors up to 1 hp size. "Floating" feature provides motor suspension that keeps belt properly taut. Rail, with motor attached, can be lifted from clips for use with other power tools . if additional clips (available separately) are used.
REVERSING SWITCH
This is a compact switch for instant reversing of any Split-Phase or Capacitor Type motor up to 1 hp. Connection diagram is furnished.
ALSO MANY MORE CRAFTSMAN ACCESSORIES TO AID YOU IN OBTAINING MORE AND BETTER USE OF YOUR MOTORS.
MOTOR AND POWER-TOOL MOUNTING ACCESSORIES
CRAFTSMAN STEEL BASES
Exceptionally sturdy and steady vet easy to move about in shop and to level as needed. Each provides optimum working height for tool and best mounting position for tool motor. Metal guards are separately available to enclose belts
UNASSEMBLED STEEL-FRAME BENCHES
Heavy-duty steel frames with two adjustable steel cross-rails easily bolt assembled. Come in two sizes (14-1/4 x 30" and 26" sg.) to provide for all bench power tools. Can be fitted with rubber wheels and swivel motor mount, separately available
KEEP WORK AREA CLEAN-SAFE
USE A HANDY CRAFTSMAN VAC
HEAVY-DUTY INDUSTRIAL VAC
Large 45 gallon capacity, perfect for schools, shops, factories, Two by-pass motors - 1 for light pickup: both for heavy work. Supertough Permanex tank won't crack. chip, rust . resists acids, alkalis solvents and oil temperatures down to -20oF. Powerful. fullstrength pick-up of wet or dry debris, with tank empty to full ... only clean air circulates past motor, all dirt is positively trapped in tank.
Mounted on snap-on dolly with four ball-bearing casters. Flexible 6-ft. hose, triangular nozzle: 8-ft., 3-
HOME-N-SHOP VAC
Same as above except: has 27-gal. capacity with one by-pass motor for single-strength-suction opera-Excellent for workshops, stores, apartment buildings, etc.
HANDY VAC ACCESSORIES
- 1 2-piece 46" extension handle
- 2 Set: 1 blower, 1 brush and 1 crevice tool.
- 3 Accessory rack to hang on vac or wall.
- 4 Wet nozzle 14" wide
- 5 Dry nozzle, 14" wide,
- 6 Hose adapter takes most standard home
- 7 Filter bags (not shown)
ALSO OTHER DRY (ONLY) PICK-UP MODELS
CRAFTSMAN MANUALS
Dozens of New Ideas For Using Your Power Tools
RADIAL-ARM SAWS - 102 pages over 200 op. JIG SAW AND BAND SAW - 32 pages over 160 erations fully illustrated ....................................
"JOR-EITTED" RENCH SAWS - 56 pages over JOINTER SHAPER AND DISC AND BELT 200 illustrations ....................................
POWER TOOLS - 192 pages, 1100 illustrations, 600 operations on 8 tools and sharpening ... Cat No 2912
OXY ACETYLENE WELDER'S HANDBOOK -278 pages amply illustrated for beginners and
THE DRILL PRESS - 32 pages, 200 illustrations over 100 operations ....................................
illustrations ...... Cat. No. 2919
SANDER – 32 pages, over 150 operations, fully illustrated ....................................
THE WOOD LATHE - 32 pages, over 150 fully illustrated operations ....................................
ARC WELD IT YOURSELF - 32 pages, 100 illustrations
HOW TO SHARPEN 32 pages over 200 illustrations covers shop and household edged Cat No 2924
SPECIFIC MOTOR APPLICATIONS
POWER TOOLS
Any power tool will perform better when ample horsepower is applied. Ample hp means sufficient starting torque and overload torque, as well as ample running torque. Insufficient hp usually results in rougher, poorer quality work (from slowing of overloaded motor)...and probable damage to the motor. Better have an excess of power, especially for those intermittent (but demanding) overload periods (as when a saw blade encounters a tough knot) than to have too little.
Remember that, even though a Split-Phase motor may have sufficient power for normal operations, a Capacitor motor of the same size will provide the extra power needed for occasional tough starts. Also keep in mind that the totally-enclosed Capacitor motor is the
most dependable for any application requiring continuous duty or operation under adverse conditions of dust, etc. Because a tool may be operated under many different conditions ranging from occasional, light usage to continuous, heavy usage in severe conditions, our motor recommendations in the following lists also range from the smallest, lightest-duty motor that can be used up to the best. Within this range, select for your own purpose the right motor for the kind of usage you expect to give it.
Following, there are two lists of tools separated according to rpm of motor needed. Sizes and types of motors, only, are given in these lists. For listings of applicable motors, by Catalog Nos., refer to page 31.
TOOLS THAT OPERATE AT 3450 RPM
| BENCH SAW | 8'' |
|---|---|
| JOINTER-PLANER |
4" to 6" See 1725 rpm list
6-1/8" |
| (Use ''biggest'' tool on line) ½ hp Cap. to 2 hp Cap. | |
| SANDER |
4'' Belt only See 1725 rpm list
6'' Belt and 9'' Disc ½ hp Cap. to ¾ hp Cap. 12'' Disc only See 1725 rpm list |
| SWING SAW | 10'' |
| 6'' | |
| WOOD SHAPER | 2½" Max. Spindle Lath |
TOOLS THAT OPERATE AT 1725-1750 RPM
| BAND SAW |
|
|---|---|
| BUFFER | - See Grinder |
| DRILL PRESS |
|
| FLEX. SHAFTS |
|
| GEM MAKER | - 6" or 10" 1/3 hp Sp-Ph to 1/3 hp Cap. |
| GRINDER-BUFFER |
|
| GRINDSTONE (WET) | - 10" Wheel 1/4 hp Sp-Ph to 1/3 hp Cap. |
| HACKSAW |
|
| JIG SAW | – 18" 1/3 hp Sp-Ph to 1/2 hp Cap. |
| JOINTER-PLANER | 4-1/8'' 1/3 hp Sp-Ph to 1/3 hp Cap. 4-3/8'' 1/3 hp Sp-Ph to 1/3 hp Cap. 6-1/8'' See 3450 rpm list |
| METAL LATHE |
|
| POLISHING HEAD | – Up to 8" Wheel(s) 1/4 hp Sp-Ph to 1/3 hp Cap. |
| SANDER | - 4'' Belt only 1/3 hp Sp-Ph to 1/3 hp Cap. - 6'' Belt and 9'' Disc See 3450 rpm list - 12'' Disc only 1/3 hp Sp-Ph to 1/3 hp Cap. |
|
THICKNESS PLANER
NOTE: |
- 6'' and 12¼'' See 3450 rpm list
For over 2 hp and up to 5 hp with 12¼'' model, use a 1725 rpm motor. - 20'' 3 hp Cap. to 10 hp Rep-Cap. |
| WOOD LATHE | - 8" Swing 1/3 hp Sp-Ph to 1/2 hp Cap. |
FARM & INDUSTRIAL EQUIPMENT
Size and type of Sears motor recommended is given for each piece of equipment in the following list. Where more than one selection is shown, the last one is the best choice. Never select a motor smaller (less hp) than recommended; it is far better to over-power an operation than to under-power it.
For listings of applicable motors, by Catalog Nos., refer to page 31 . The type designations used in following list are:
| Split-Phase Motor, Page 11 | |
|---|---|
| _ | Gen-Purpose, Cap-Start, Induction- |
| Run, Totally Enclosed Fan-Cooled | |
| Motor, Page 13 | |
| - | Gen-Purpose, Cap-Start, Induction- |
| Run Motor of proper RPM, Page 10 | |
| Heavy-Duty, Cap-Start, Induction- | |
| Run Motor of proper RPM, Page 13 | |
| C | Heavy-Duty, Cap-Start, Induction- |
| Run, Totally-Enclosed, Fan-Cooled | |
| Motor of proper RPM, Page 13 | |
| SI | NGLE-STA | GE TYF | PES | ||||
|---|---|---|---|---|---|---|---|
|
LBS.
PRESSURE |
НР | CFM | MOTOR TYPE | ||||
|
AIR COMPRESSORS
Horsepower is deter- mined according to operating pressure (LBS. PRESS.) and cu. ft. of free air displaced per min. (CFM). |
80 80 100 150 |
1/2
3/4 1 1-1/2 2 3 5 1/3 1/2 3/4 1 1-1/2 2 3/4 1 1-1/2 3/4 1 1-1/2 2 3/4 1 1-1/2 2 5 7-1/2 |
3.4
4.6 7.2 9.5 13.0 21.0 33.0 0.9 1.5-1.9 3.0-3.3 3.4-4.1 6.0 8.0 11.0-12.0 19.0 30.0 0.8 1.2-1.5 2.3-2.7 2.7-3.0 4.0-5.1 6.6-8.8 9.1-12.5 16.0-25.0 30.0 |
CAP CI CI CAP CI CAP CI CAP CI |
AB OF CAP-A
-B or CAP-A -A, Cl or Cl-TEFC r Cl-TEFC r Cl-TEFC r Cl-TEFC r Cl-TEFC r Cl-TEFC -B or CAP-A -B or CAP-A -A, Cl or Cl-TEFC r Cl-TEFC r Cl-TEFC r Cl-TEFC r Cl-TEFC r Cl-TEFC -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A -B or CAP-A |
||
| TWO-STAGE TYPES | |||||||
| CFM F |
LBS.
PRESSURE |
нр | - | мот | |||
|
3.8-4.1
5.6-5.9 7.4-8.0 11.6-12.0 17.2-19.0 |
150
to 175 |
1-1/2
2 3 5 7-1/2 |
|||||
| BARN CLEANERS | N | LOADE | НР | MOTOR TYPE | |||
|
Horsepower depends upon
of loaded chain in use. |
the feet |
Up to 120 ft.
120 to 160 ft. 165 to 225 ft. 230 ft. and Up |
1-1/2
2 3 5 |
||||
| BUNK | FEEDERS | ||||||
| Horsepower de | epends upo | n the feet | |||||
|
LOADED CONVE
Open Type 9'' Auger |
нр | - | мотог | R TYPE | |||
| Up to 50 ft. Up to 50 ft. 60 to 80 ft. 80 to 70 ft. 90 to 120 ft. 100 to 120 ft. 130 to 160 ft. 130 to 160 ft. |
1
1-1/2 2 3 |
CAP-A, CI or CI-TEFC
CI or CI-TEFC CI or CI-TEFC CI or CI-TEFC CI or CI-TEFC CI or CI-TEFC |
|||||
CONCRETE MIXERS
Horsepower is determined by the cu. ft. of concrete delivered per batch. NOTE: Sears Wheelbarrow Model is not included here as this requires a special motor to fit in area provided.
|
CU. FT.
CAPACITY |
HP | MOTOR TYPE | ||
|---|---|---|---|---|
| > |
Up to 1-1/2
1/2 to 3 3 to 5 |
1/4
1/3 1/2 |
SP
SP SP or CAP-B |
Horsepower is rated in accordance with the air delivery in cu. ft. per min. (CFM) at end of duct, and by the temperature rise (TR). NOTE: Typical installations are given below, and are based upon a 10 ft. duct and the burning of 6 gal. of fuel oil per hour.
FEED MIXERS
Horsepower is determined by the bushel capacity of the mixer.
| CFM | TR | НР | MOTOR TYPE |
|---|---|---|---|
|
10,250
8,200 5,900 3,300 |
40°
48° 65° 102° |
3 | CI or CI-TEFC |
|
12,200
11,600 10,300 8,700 |
38°
39° 41° 46° |
5 | |
|
14,900
14,300 12,900 11,500 |
34°
35° 37° 39° |
7-1/2 | |
|
17,300
16,600 15,000 |
30°
31• 34° 36° |
10 | CI or CI-TEFC |
|
CAP.
IN BU. |
НР | HOPPER ABOVE FLOOR | нр | HOPPER BELOW FLOOR |
|---|---|---|---|---|
|
20
25 40 80 120 |
3/4
1-1/2 2 3 5 |
CAP-A
Cl or Cl-TEFC Cl or Cl-TEFC Cl or Cl-TEFC Cl or Cl-TEFC Cl or Cl-TEFC |
1
2 3 5 7-1/2 |
CAP-A, CI or CI-TEFC
CI or CI-TEFC CI or CI-TEFC CI or CI-TEFC CI or CI-TEFC CI or CI-TEFC |
|
30
20 |
3 5 |
CI or CI-TEFC
CI or CI-TEFC |
5
7-1/2 |
CI or CI-TEFC
CI or CI-TEFC |
||
|---|---|---|---|---|---|---|
| A | IN AUGERS | Horsepowe | depends v | pon the len | gth and diameter of the a | uger tube. |
|
TUBE
LGTH. |
TUBE
DIA. |
НР | MOTOR TYPE | |||
|
11, ft.
16, ft. 21, ft. |
4 to 5 in.
6 in. 4 in. 5 in. 6 in. 5 in. 6 in. |
1/2
3/4 1/2 3/4 1 1/2 1 2 |
CAP-B or CAP-A
CAP-B or CAP-A CAP-B or CAP-A CAP-B or CAP-A CAP-B or CAP-A CAP-B or CAP-A CAP-B or CAP-A CAP-B or CAP-A CAP-B or CAP-A |
| 11 | 5 in. | 3/4 | CAP-B or CAP-A |
|---|---|---|---|
| 6 in. | ĩ | CAP-B or CAP-A | |
| 1 (4 | 4 in | 1/2 | CAP-B or CAP-A |
| 1 11. | 1 L | CAP-B or CAP-A | |
| 5 in. | 5 | ||
| 0 in. | 4 | ||
| 8 in. | 3 | ||
| 27 ft. | 4 in. | 1/2 | |
| 5 in. | 1-1/2 | ||
| 6 in. | 3 | CI or CI-TEFC | |
| 8 in. | 5 | ||
| 31 f+ | 4 in. | 3/4 | CAP-B or CAP-A |
| ,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, | 5 in | 2 | CI or CI-TEFC |
| ,, | 6 to 8 in | 5 | CI or CI-TEFC |
| 22.6 | 5 10 5 10 | 2 | CL or CI-TEFC |
| 33 ff. | 5 10. | 1 | |
| 0 to 8 in. | 2 | CL or CL TEEC | |
| 41 ft. | 5 in. | 4 | |
| 6 in. | 5 | ||
| " | 8 in. | 7-1/2 | |
| 51 ft. | 8 in. | 7-1/2 | CI or CI-TEFC |
| 20 | |||
PAINT SPRAYERS
(Also see Air Compressors)
For this equipment use the same or next higher horsepower motor as original, or as recommended by manufacturer.
PUMPS, WATER - V-BELT DRIVEN
Each model pump is designed to be driven at a certain rpm by a recommended hp motor . or at several different rpms with a motor of recommended hp for each speed. When driven as specified, a pump will produce tabulated results. In the case of Centrifugal Pumps, these results are tabulated in terms of gals. per min (GPM) under certain head pressures (FT. of HEAD). For Shallow Well Piston Pumps the results are stated simply in gals. per hr. (GPH). Use the same hp motor (and pulley sizes) as the original, or as recommended by manufacturer.
| HP | MOTOR TYPE |
|---|---|
|
1/4
1/3 1/2 3/4 1 |
SP
SP or CAP-B SP, CAP-B or CAP-A CAP-B or CAP-A CAP-B, CAP-A, CI or CI-TEFC |
MOTOR TYPE
CAP-B or CAP-A
CAP-B or CAP-A CAP-B, CAP-A, CI or
CI-TEFC
|
SILO UNLOADERS Horsepower is determined by the type of silage and diameter of silo
in feet. |
|||
|---|---|---|---|
|
Thrower Operation
SILAGE |
SILO DIA., FT. | НР | MOTOR TYPE |
|
Grass, Corn, Haylage
Grass, Corn Grass, Corn Haylage |
10 - 14
16 - 18 20 Up 17 Up |
1/2
3/4 1 1 |
CAP-A
CAP-A CAP-A or CI-TEFC CAP-A or CI-TEFC |
|
Auger Operation
SILAGE |
SILO DIA., FT. | НР | MOTOR TYPE |
|
Grass, Corn, Haylage
Grass, Corn Grass, Corn Haylage |
10 - 14
16 - 18 20 Up 17 Up |
3
5 7-1/2 7-1/2 |
CI-TEFC
CI-TEFC CI-TEFC CI-TEFC CI-TEFC |
НР
HOME EQUIPMENT
Types of motors required are recommended. Check the selling price of a Sears replacement motor before having your defective motor repaired... the new motor may cost less , and will provide better performance than a repaired one. Motor type symbols (SP, etc.) used in this list are same as in preceding list.
| AIR CIRCULATORS AND ATTIC FANS |
|---|
|
Up to 30" BladeSP, 1/3 HP, 48 or 56 frame-
1-speed (1725 RPM) or 2-speed (1140/1725 RPM) |
| AIR CONDITIONERS |
|
8" to 10" Blowers SP, 1/3 HP, 48 or 56 frame-
1-speed (1725 RPM) or 2-speed (1140/1725 RPM) |
| 3 Ton Pump CI-TEFC, 3 HP, 1725 RPM |
| 7½ Ton PumpCI-TEFC, 5 HP, 1725 RPM |
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FORCED WARM-AIR FURNACES
Up to 10" BlowersSP, 1/3 HP, 48 or 56 frame- 1-speed (1725 RPM) |
| INSECTICIDE SPRAYERS |
SEARS MOTORS
SP BLOWER AND FAN MOTORS
Features as shown on page 9 . All are for 110-120V, 60 cyc. AC. 2-speed (1140/1725 RPM). No. 56 frame, 1/3 HP ______ Cat. No. 1971
1-speed (1725 RPM), No. 48 frame, 1/3 HP ... Cat. No. 19835 1-speed (1725 RPM), No. 56 frame, 1/3 HP ... Cat. No. 1983
- SP GENERAL-PURPOSE MOTORS -
Features as shown on page 11 . All are for 110-120V, 60 cyc. AC.
1/4 HP, 1725 RPM, single-end 1/2" shaft with 5/8" adapter ...... Cat. No. 1210
1/3 HP, 1725 RPM, single-end 1/2" shaft with 5/8" adapter ....................................
——— CAP-B 1725 RPM GENERAL-PURPOSE MOTORS —
Features as shown on page 10 . All cords are 4-ft., 3-wire with plug and adapter.
1/3 HP, 110-120/230V-with sleeve bearings, resilient base, single-end 1/2" shaft with 5/8" adapter, overload protector and cord ....................................
1/2 HP, 110-120V — with sleeve bearings, resilient base, double-end shaft (1/2" with 5/8" adapter and 5/8") and cord ..... Cat. No. 1214
1/2 HP, 110-120/230V — with ball bearings, rigid base, double-end shaft (1/2" with 5/8" adapter and 5/8"), overload protector and cord ....................................
1 HP, 110-120/230V – with ball bearings, rigid base, single-end 5/8" shaft, overload protector and cord ....................................
CAP-B 3450 RPM GENERAL-PURPOSE MOTORS
Features as shown on page 10 . All have rigid base, double-end shaft (1/2" with 5/8" adapter and 5/8") and 4-ft., 3-wire cord, plug and adapter.
1/2 HP, 110-120V – with sleeve bearings, no overload protector ....................................
3/4 HP, 110-120V — with sleeve bearings, no overload protector ....................................
--- CAP-A GENERAL-PURPOSE MOTORS
Features as shown on page 10. All are CI-TEFC type for 110-120/230V, have rigid bases, single-end 5/8" shafts, ball bearings and manual-reset overload protectors – no cords.
1/3 HP, 1725 RPM Cat. No. 1222 1/2 HP, 1725 RPM Cat. No. 1223 3/4 HP, 1725 RPM Cat. No. 1224 1 HP, 1725 RPM Cat. No. 1224 1 HP, 1725 RPM Cat. No. 1224
3/16" key No. 184 frame Cat. No. 12736
3 HP, 110-120/230V, 1725 RPM - 1-1/8"
5 HP. 230V. 1725 RPM - 1-1/8" shaft, 1/4"
key. No. 215 frame ...... Cat. No. 12756
7-1/2 HP, 230V, 1725 RPM - 1-1/8" shaft, 1/4" key No. 215 frame Cat. No. 12766
..... Cat. No. 12747
as shown on page 13. All have open 2 HP 110-120/230V 3450 RPM - 7/8" shaft
Features as shown on page 13. All have open frames, ball bearings, single-end shafts and manual-reset overload protectors – no cords. 1 HP, 110-120/230V 1725 RPM – 7/8" shaft. 3/16" key. No. 182 frame
Cat. No. 12706 1-1/2 HP, 110-120/230V, 1725 RPM – 7/8" shaft, 3/16" key, No. 184 frame
Cat. No. 12716 2 HP, 110-120/230V, 1725 RPM – 1-1/8" shaft, 1/4" key, No. 213 frame Cat. No. 12726
-CI-TEFC HEAVY-DUTY MOTORS (TOT, ENCL, FAN-COOLED)-
Exactly the same as the CI Heavy-Duty Motors above, except that these are totallyenclosed fan-cooled types.
1 HP, 110.120/230V, 1725 RPM – 7/8" shaft, 3/16" key, No. 182 frame ....................................
2 HP, 110-120/230V, 1725 RPM – 1-1/8" shaft, 1/4" key, No. 213 frame Cat. No. 12816 Cat. No. 12826
2 HP, 110-120/230V, 3450 RPM – 7/8" shaft, 3/16" key, No. 184 frame ....................................
3 HP, 110-120/230V, 1725 RPM – 1-1/8" shaft, 1/4" key, No. 215 frame ....................................
5 HP, 230V, 1725 RPM — 1-1/8" shaft, 1/4" key, No. 215 frame ...... Cat. No. 12856
7-1/2 HP, 230V, 1725 RPM - 1-1/8" shaft, 1/4" key, No. 215 frame ...... Cat. No. 12866
There's a Craltsman Grinder
FOR EVERY PURPOSE
SELE DOWERED 2 WHEEL CRINDERS
All have 3450 RPM motors, removable quards with safety-class eve shields adjustable tool rests, on-off switch and 3-wire cord with plug and adapter 1/4 HP has SP 110-120V motor and 6 x 1/2' wheels one fine other med arit 1/3 HP has SP 110-120V motor and 6 x 3/4" wheels, one 36 other 60 grit. 1/2 HP has CAP 110-120/230V motor and 7 x 1 wheels, one 36 other 60 grit. 3/4 HP has CAP 110-120V motor and 8 x 1" wheels, one 36 other 60 grit, Three larg er models are fitted with gooseneck lamps, removable water travs, spark ar restors and rubber wheel mounts The 1/2 and 3/4 HP models have dust exhaust outlets
COMPACT HOMESHOP MODEL
Has SP 110-120V motor and two 5 x 1/2" wheels one fine other med-coarse grit Removable guards with plastic eve shields and adjustable tool rests. Convenient on-off switch; 6-ft. 3-wire cord, plug and adapter.
Has removable quards. adjustable tool rests, two 6 x 3/4" wheels, one fine other coarse grit. Flat housing provides 1-3/16 front clearance for long pulley.
Butts and polishes metals and plastics - removes paint and rust but not for grinding (no guards). Has ball bearings, 1/2 x 20 threaded shaft ends with 2-1/4" flanges for wheels up to 6" dia.; 2" machine pulley.
CRINDING ACCESSORIES
Sears offers you a complete assortment of grinding, sanding and polishing accessories. Highest industrial standard aluminum-oxide and grits: cutting, sanding and polmaterials; sanding drums and sleeves: wire brushes: etc.
A MIDWEST TECHNICAL PUBLICATION
SEARS ROEBUCK AND CO., CHICAGO ILL, 60607 ILS A AND SIMPSONS-SEARS LIMITED. TORONTO
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