How do you measure a 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 are motor frame sizes?
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.
Is standard for motor dimensions?
The dimensions of the motors shall be as specified in IS 1231, IS 2223 and IS 2254 as applicable.
What is frame size of induction motor?
In fractional horsepower motors the frame sizes are two digits and represent the shaft height of the motor from the bottom of the base in sixteenths of an inch. For example, a 56-frame motor would have a shaft height (“D” dimension) of 56/16 of an inch, or 3.5 inches.
What is the diameter of a 42 frame motor?
Usual NEMA sizes
| NEMA | Flange | Shaft Diameter (U) |
|---|---|---|
| 42 | 4,2 | 0,375 |
| 48 | 4,8 | 0,5 |
| 56 | 5,6 | 0,625 |
| 143 | 14,3 | 0,875 |
What is shaft height in motors?
The first two digits in the frame size designation give you information about shaft height (the distance from the shaft center to the mounting surface) in inches. For example, the shaft height is the first two digits divided by 4, so if you have a 324T frame motor then the shaft height is 32/4 = 8 inches.
How much does a 7.5 hp motor weight?
Product Documentation
| Catalog Number: | ECP3770T |
|---|---|
| Description: | 7.5HP,1770RPM,213T,TEFC,3PH,60HZ,CHEM DUTY,SUPER-E |
| Ship Weight: | 170 lbs. |
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 is au frame motor?
The “U” frame motors were designed for use with Class A insulation, which has a rating of 105° C. The motor designs were such that the capability would be used at the hottest spot within the motor. “T” frame motor designs are based on utilizing Class B insulation with a temperature rating of 130° C.
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 are the dimensions of an electrical motor?
Dimensions of electrical motor frames according NEMA 1984 are indicated below: 1 in (inch) = 25.4 mm. NEMA Frame Designation. Frame Dimensions (inches) D. E. 2F. BA. N-W.
What kind of motor is a short shaft?
Short shaft motors are designed to be directly coupled to a load through a flexible coupling (Love-Joy, etc.). They are not designed for use in belt drive applications. T indicates that the motor is of the 1964 and later T frame vintage. U indicates that the motor is of the 1952-1964 U frame vintage.
How big is a NEMA electric motor frame?
NEMA electrical motor frame dimensions NEMA Frame Designation Frame Dimensions (inches) Frame Dimensions (inches) Frame Dimensions (inches) 145JP 2 1/4 145T 2 1/4 2 1/4 2 145TC 2 3/4 2 1/4 145TR 2 1/4 2 5/8 1 3/4
How big is a 3 phase cast iron motor?
3 phase TEFC Cast Iron at 50Hz, 400V and 525V as standardFrame Size 80 to 355 in foot, flange and / or foot / flange combinations.Rated output: 0.55kW to 400kW at 4 pole speed. 2, 4, 6, 8 pole motors available ex stock as standard.