Van der Graaf - Description of Type Number

An example of a Drum Motor Type: RTM215A40 - 43 NB TBCCW

R
(optional) TM 215 A 40 4 3 NB
(optional) TBCCW
(optional)

Internal electromagnetic brake TM:
Drum Motor

KT:
Idler Diameter of Drum Motor measured in millimeters (mm) Design A: with hub

Design B: without hub Shaft Diameter Measured in millimeters (mm) Number of poles of electric motor Horsepower
of the motor
(HP) No Belt or Partial Belt contact TB (Backstop) with
a clockwise
CW or counter
clockwise CCW
rotation relative to
junction box end of
motor

MRB (Manual
Release Backstop)
with a clockwise
CW or counter
clockwise CCW
rotation relative to
junction box end of
motor

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R (optional)	TM	215	A	40	4	3	NB (optional)	TBCCW (optional)
Internal electromagnetic brake	TM: Drum Motor KT: Idler	Diameter of Drum Motor measured in millimeters (mm)	Design A: with hub Design B: without hub	Shaft Diameter Measured in millimeters (mm)	Number of poles of electric motor	Horsepower of the motor (HP)	No Belt or Partial Belt contact	TB (Backstop) with a clockwise CW or counter clockwise CCW rotation relative to junction box end of motor MRB (Manual Release Backstop) with a clockwise CW or counter clockwise CCW rotation relative to junction box end of motor