Skip to Main Content

Frequently Asked Questions

What does “Form Factor” (FF) mean?

Form Factor for a DC speed control is a measure of the amount of current (ampere) filtering (smoothing) provided by the control to a motor. Form Factor cannot be determined until a motor and control combination are driving a load. However, most control manufacturers catalog their controls with a FF rating. Most small motor and control combinations exhibit FF= 1.0 to 1.05 with a filtered control and FF= 1.6-1.8 with an unfiltered control at rated torque.

Bodine permanent magnet DC motors in this catalog are rated for continuous duty on 130 VDC, FF=1.05 current as supplied by Bodine type FPM and WPM controls. These motors and gearmotors can be successfully operated from unfiltered controls at FF=approximately 1.6, at speed not less than 1700 rpm. For intermittent duty operation, full nameplate torque may be available. The designers should test for each individual application.

Which Bodine motors are CE approved?

Most AC and PMDC motors and gearmotors, the INTEGRAmotors, and most speed controls carry the CE mark. For model-specific details, please  contact our customer service department.

What control can I use for my Bodine gearmotor or motor?

Our Control Selection Guides can help you select an optimal control:


Does Bodine manufacture explosion-proof products?

We currently offer Class I/Div.2, brushless DC gearmotors. Click here for more information. We are also offering Class I/Div. 1 explosion-proof versions of our 34B-FX gearmotors and motors. Minimum order quantities apply. Please contact your local Bodine sales representative.

Does Bodine manufacture brake motors?

Yes, Bodine has manufactured custom motors and gearmotors with mounted brakes for many decades. Minimum order quantities apply. Please contact your local Bodine sales representative.

Which motors/gearmotors are reversible?

All motors and gearmotors shown in our catalog are reversible. To prevent gearing damage, most gearmotors require a full stop before reversing.

What is obtainable torque?

Obtainable torque is the maximum output torque (peak torque) for a gearmotor. Gearmotors may be operated at these levels only for brief periods due to thermal or mechanical limitations.

Can Single speed AC motors and gearmotors ever be operated as adjustable speed?

AC three-phase inverter duty (PP), three-phase synchronous inverter duty (YP), and some permanent split capacitor (PSC or CI) designs may be operated at adjustable speed with suitable controllers.

What is the IP rating of a 24A stock motor or gearmotor, and do you have an IP-44 seal kit for this product type?

Most 24A stock gearmotors and motors are rated IP-20, but we offer an IP-44 seal kit. The part number of this IP-44 seal kit is stock model 0976. Our type 24A-60P planetary gearmotors are rated IP-65 and do not require this kit

Which products can be operated with the drive shaft in vertical orientation?

Motors without gearing and K-2 gearmotors may be operated in any position. Standard Bodine gearmotors are designed for universal horizontal mounting with the motor portion or the drive shaft horizontal. Other mounting positions are possible, depending on the gearmotor type (and lubricant). Some gearmotors are oil lubricated. If these gearmotors are mounted in a position other than horizontal, the oil might find its way out of the gearbox as the motor shaft or the shaft seal wear out over time. When in doubt, please consult our technical support staff in Northfield (Chicago area). You can e-mail us at

What will happen if a 60 Hz AC induction motor is operated on 50 Hz?

A motor designed for 60 Hz operation will run at 5/6 rated speed on 50 Hz. This can be of concern for totally enclosed, fan cooled (TEFC) motors or gearmotors. For example, a motor rated 1700 RPM on 60 Hz will run at 1400 RPM on 50 Hz. When the motor fan runs slower, the motor winding will receive less then the expected cooling.

Bodine 60 Hz permanent split capacitor (PSC) "Cl" motors will run hotter on 50 Hz, and typically require a capacitor change and derating. The motor temperature should be monitored during testing to make sure it is not overheating. Bodine split phase (or "Sl") motors and gearmotors that are rated for 60Hz should not be operated on 50 Hz because the internal centrifugal cut-out switch will not cut out correctly and might damage the start winding. Consult the factory for a 50Hz solution.

Need help finding the right parts?

We have all the expertise you need to get the job done. Contact us today!