D78-TR traction motor

Discussion of Electro-Motive locomotive products and technology, past and present. Official web site can be found here: http://www.emdiesels.com/.

Moderator: GOLDEN-ARM

Class32000

D78-TR traction motor

Post by Class32000 »

Anyone know what exactly an EMD D78-TR is?
How does it differ from a normal D78 traction motor?

bogieman
Posts: 73
Joined: Tue Dec 25, 2007 8:43 pm
Location: Palos Park, IL

Re: D78-TR traction motor

Post by bogieman »

EMD normally uses TR in a traction motor designation to mean tapered roller bearings for the motor support bearings on the axle as opposed to the oil-lubricated plain bearings.

User avatar
MEC407
Posts: 10975
Joined: Thu Mar 11, 2004 8:15 pm

Re: D78-TR traction motor

Post by MEC407 »

What would be the difference between a D78 TR and D78 BTR motor?

Also, does EMD still manufacture these?
MEC407
Moderator:
Pan Am Railways — Boston & Maine/Maine Central — Delaware & Hudson
Central Maine & Quebec/Montreal, Maine & Atlantic/Bangor & Aroostook
Providence & Worcester — New England — GE Locomotives

artem semz
Posts: 3
Joined: Wed Oct 30, 2019 7:50 am

Re: D78-TR traction motor

Post by artem semz »

Hello everyone,
can anyone provide technical parameters of the d77 and d78 motors, in order to compare both.
thank you in advance

Return to “EMD - Electro-Motive”