The frame sizes that are normally associated with industrial fractional horsepower motors are 42, 48, and 56. In this case, each frame size designates a particular shaft height, shaft diameter, and face or base mounting hole pattern.
What is the frame number on a electric motor?
The frame number relates to the “D” dimension (distance from center of shaft to center bottom of mount). For example, in the two-digit 56 frame, the “D” dimension is 3½”, 56 divided by 16 = 3½”. For the “D” dimension of a three-digit frame number, consider only the first two digits and use the divisor 4.
What is a 184 frame motor?
A motor’s frame size is a reference to the size of the mounting footprint, shaft diameter, and shaft length. These motors are all frame size 184. In terms of mounting, these motors can replace each other and other motors with the same frame size.
What is the difference between a 48 frame motor and a 56 frame motor?
The main difference between a 48 frame and a 56 frame hot tub pump is that the 48 frame has a smaller motor housing and so the 4 through bolts that fasten the wet end to the motor are closer together on the smaller motor.What does 48 frame motor mean?
48-Frame motors are basically pool motors, not designed for the rigors of hot tubs with their high-pressure massage jets. … Specifically “Frame” refers to the diameter of the armature in the motor. Although 2 motors may have the same horsepower rating, a 56-Frame motor will be 40% larger.
What size is a 56 frame motor?
NEMA FRAMED*H(dia.)563 1/211/32 slot56H3 1/211/32 slot56HZ3 1/2**664 1/813/32 slot
What size is a 48 frame motor?
NEMA Frame DesignationFrame Dimensions (inches)DN-W422 5/81 1/842C2 5/81 1/84831 1/2
What is a 56 motor frame?
Sort & Filter. A motor’s frame size is a reference to the size of the mounting footprint, shaft diameter, and shaft length. These motors are all frame size 56. In terms of mounting, these motors can replace each other and other motors with the same frame size.What is frame and frame size in case of induction motor?
The frame size is the shaft height in millimeters. NEMA design letter — Certain types of machinery may require motors with specialized performance characteristics.
Can I replace a 48 frame spa pump with a 56 frame?Almost all spa pumps are manufactured in one of two standard frame sizes: 48-Frame and 56-Frame. If you want to replace your wet end or your motor, you should use an equivalent of the same size, so that the mounting holes between the motor and the wet end align.
Article first time published onWhat does C face motor mean?
A “C-Face” motor is a common American mechanical standard designed with a rugged flange on the face of the motor for mounting purposes. The weight of the. motor is supported by the flange, which is most commonly attached to a gearbox.
How do you measure an electric motor shaft?
The frame number relates to the “D” dimension (distance from center of shaft to center bottom of mount). For a two digit frame divide the frame number by 16 to arrive at this dimension. For example, in the two-digit 56 frame, the “D” dimension is 3½” (56 divided by 16 = 3½”).
What does 56C frame mean?
Machine builder Richard J. Kinch says the “C” in “56C” stands for a flange or faceplate mounting system. The four mounting points are on the face of the motor, where the shaft comes out. This mounting arraignment is very useful.
What is NEMA 23 frame size?
NEMAFlangeShaft Diameter (U)171,70,1965232,30,25343,40,375424,20,375
How do you size a motor?
Motor running current and voltage values should be measured and recorded on a routine basis as part of a preventive maintenance program. Use this formula to estimate motor horsepower: Horsepower (hp) = Voltage x Amerage x % EFF x power factor x 1.73/746.
What does FR mean on a motor?
Front engine, rear-wheel drive (FR) This doesn’t mean that FR is dead. Some of the most fun-to-drive cars have rear wheel drive. Sure, rear wheel drive cars aren’t for everyone, but for us “enthusiasts” they definitely have their place.
What type of motor is a 48Y?
The Flex-frame motors are usually labeled as 48Y, but will have the distinct pedestal at its base. The Flex is unique because it uses four thin partially threaded screws (known as thru bolts) that are slid the length of the motor through the back end and screwed into the seal plate.
What is AZ frame motor?
Take “Z” for example, this means there was special machining done to the shaft to make it different from the standard stocked motor. … These motors are many times referred to as Above-NEMA or ANEMA Motors since there isn’t a NEMA frame to match to.
What is meant by frame size?
Frame size generally refers to frame height, the length of the seat tube from the bottom bracket (crank bearing) to the top tube.
What is motor c dimension?
The overall length (“C” dimension) will change with the enclosure, horsepower, and speed for the same brand. This will vary from one brand to another for motors of the same HP, speed or enclosure.
What is a YZ frame on a motor?
“YZ” means that the motor has been changed and no longer follows these rules. The shaft may be different, ie, longer, shorter, diameter, threaded, ect. And as a. result is no longer a “standard” motor. All Dimensions in inches.
How do you calculate motor kw?
Multiply the motor voltage by the full-load current. The result is in watts. Divide watts by 1,000 to give kilowatts. For example, 230 volts x 20 amps = 4,600 watts; 4,600 watts divided by 1000 = 4.6 kilowatts.
What does NEMA 34 mean?
NEMA (National Electrical Manufacturers Association) 34 is a stepper motor with a 3.4×3.4 inch faceplate and 1.8° step angle. Each phase draws 4.0 A, allowing for a holding torque of 42 kg-cm. NEMA 34 Stepper motor is generally used in Printers, CNC machine, Linear actuators and hard drives.
What is IEC standard for motor?
In short: the International Electrotechnical Commission (IEC) standards are the uniform standards indicating the efficiency classes for electric motors. In 1999, the European Commission established different efficiency classes for electric motors.
Do I have to drain my hot tub to replace the pump?
Shut off the Water: Most circ pumps don’t have isolation valves on either side; slice valves that can be closed to shut off water, although common on jet pumps and on high flow circ pump systems. You can drain the spa to make the repair, if you need to drain anyway, but it’s not necessary.
What is pump frame?
A frame pump is a portable pump that’s designed to fit within a frame and become a part of the bike’s front triangle until it’s needed. … Larger in size, frame pumps are also more efficient at inflating tyres than mini pumps.
What does JM mean on motor frame?
• JM – The letters JM designate a special pump shaft originally designed for. a “mechanical seal.” This motor also has a C face. • JP – Similar to the JM style of motor having a special shaft, the JP motor. was originally designed for a “packing” type seal.
What is B3 mounting of motor?
B3 Horizontal Foot Mounted on Floor See ExampleB5 Horizontal Flange Mounted See ExampleB7 Wall Mounted with Feet Right Hand Side when Viewed from Drive EndB8 Foot Mounted on Ceiling
What is a Type P motor?
A ‘p’ type motor is a motor specifically designed to support and accommodate the proper form of ‘p’ type protection, so it can safely operate in a given hazardous gas environment. … Once these standards are met, EM can have the motor tested and certified by an Authorized Test Institution if desired by the customer.
How do you measure shaft size?
- τ = Torsional stress induced at the outer surface of the shaft (Maximum Shear stress).
- r = Radius of the shaft.
- T = Twisting Moment or Torque.
- J = Polar moment of inertia.
- C = Modulus of rigidity for the shaft material.
- l = Length of the shaft.
What is the shaft diameter?
The shaft diameter is defined as the diameter of the hole in the iron laminations that contains the shaft, as indicated with the red arrow in Fig. 1 (and not as the actual diameter of the mechanical shaft, which can be much smaller).
