On vertical mounting, is it okay to mount your motors both shaft up and down?
Yes. In general, motors up to 445T frame can be mounted vertically shaft up and down. Motors installed vertically must be protected from weather conditions. Larger motors are horizontal operation only. See individual product pages for details.
On motors, are the fans UNI or bidirectional?
All NEMA motors are equipped with bidirectional fans.
Is it better to install a DE roller bearing on the motors?
It depends on the application. A DE roller bearing is always preferred for belted drive applications. In direct coupling applications, always use ball bearing motors.
What kind of bearings do you use on your motors?
32N Series motors up to 215T frame and 20, 31N and 40 Series motors up to NEMA 286T and IEC180L frame are equipped with oversized double-shielded bearings. Larger motors have oversized regreasable bearings. See individual product pages for details.
What kind of grease should I use to re-grease your bearings?
We use lithium grease in our regreasable bearings, e.g. POLYREX® EM or other equivalent mineral motor grease. Please look to manual for details and regreasing schedule.
Do I have to re-grease the bearings of a new motor?
It depends on how long the motor was stocked. Every motor with regreasable bearings which has been stocked for over 6 months has to be re-greased before usage.
How often should I re-grease the bearings?
It depends on the motor’s RPM and usage. Regreasable bearings should be re-greased according to the recommendation in the manual of that particular motor.
Where is the junction box located on your Metric motors?
Metric IE2 and IE3 (20M) and (40M motors up to IEC180 frame) have the junction box on top of the motor. Metric (40M motors IEC200 - IEC315) have the junction box in the F2 position which is convertible to F1.
Should the drain holes always be opened?
The drain holes have to be open when the motor is operating in a high humidity atmosphere or low temperature environment.
What does IM B35 mean for Metric motors?
It means that the motors are equipped with D-Flange and Feet. Other descriptions are as follows: IM B3 = Footed, IM B34 = C-Face and Footed.
At what frame does the factory begin locking the shaft before shipment?
NEMA motors starting from 320T frame and Metric motors starting from IEC200 frame have shafts locked prior to shipment.
Do your motors have removable feet?
We offer removable feet on our motors as follows: 20N series 324T frame and up; Metric 20M and 40M series up to IEC132 frame. Metric 20M and 40M series from IEC90 - IEC112 frame also have rotatable feet.
Do you offer brake motors with flanges?
Yes. NEMA and Metric Brake motors are offered with all the same flanges as standard motors.
Can I convert your standard NEMA motor to F2 position?
All 31N and 32N motors can be converted to F2 position. 40N and 20N series motors up to 286T frame can be converted to F2 position. Rolled Steel and 580 frame motors are F1 only.
Do you offer D-Flange NEMA motors?
We offer D-Flanges for 31N series motors ranging from 143TD-365TD and 20N series motors ranging from 324TD - 445TD.
Do your motors have a threaded hole inside the end shaft?
All Metric motors have a threaded hole inside the end shaft according to IEC standard (See Metric IEC and NEMA Dimensional Comparison and Bearing Charts page in Elektrim Motors catalog for details). NEMA 20N and 40N series motors 320T up to 449T frame have a M20 threaded hole.
When are blowers required on your motors?
Blowers will be required for all constant torque applications where the turn down ration exceeds VFD capability.
Are your motors Inverter Rated?
Yes. All three phase motors are inverter duty rated. See individual product pages for specific inverter duty ratings for each product group.
Are your NEMA motors suitable for Y/Delta and Part Winding starting?
Yes. In general, standard motors starting from 213T frame are suitable for Y/Delta starting at 460V. Motors up to 100HP are suitable for Part Winding at 230V and motors 125HP and up are suitable for Part Winding starting at 460V. See individual product pages for specific starting for each product group.
Can your NEMA motors run at 208V?
NEMA Motors up to 400 frame are suitable at 208V. The connection diagram is the same as 230V. Max amps at 208V are placed on the nameplate.
Do you offer dual-rated motors for 60Hz / 50Hz?
All 3-Phase motors are dual rated for 60/50Hz on the standard nameplate. See individual product pages for specific rating information for each product group.
Do you offer 575V motors from stock?
Yes. NEMA motors 1-100HP and Metric motors IEC132 and larger can be re-rated to 575V with nominal HP. For more information, see 575V and specialty voltages page.
Do you offer motors with non-standard voltages and HP?
Many NEMA and metric motors can be re-rated for different voltages, HP and/or frequency based on application, duty cycle, ambient temperature and service factor required. For more information, see the 575V and specialty voltages page or contact Elektrim Motors Customer Support to discuss your special application requirements.
What brake type do you use on your Brake motors – DC or AC?
Our Brake motors are equipped with DC disc brake with a 460V AC rectifier placed inside the junction box. On request, the 460V AC rectifier can be replaced with a
230V AC rectifier.
Can I order a NEMA motor with a terminal board?
Yes. We offer NEMA motors with optional terminal boards.
Do you offer terminal boards on your Metric motors?
Yes. Elektrim Metric motors up to 112M frame are equipped with terminal boards as standard. Metric motors starting from IEC132 have 12 leads (Double Delta / Delta connection diagram at 230/460V) and can be equipped with optional terminal board.
Do you offer motors with thermal sensors?
Explosion Proof, 20 and 40 Series motors starting from 320 frame (including Metric 200L and up) are equipped with thermistors in windings as standard. Other motors can be equipped with different thermal sensors as an option.
Must an inductor be used between motor and drive?
Any motor connected to an inverter drive with power leads that exceed 100 ft. should have an inductor between the motor and drive.
What kind of starter do you prefer for your motors?
We prefer starters that include a circuit breaker, contactor and overload. A ll starters should be sized according to National Electrical Code.
What are your windings made out of?
Stator windings are made out of copper. The rotor cage is made out of aluminum alloy.