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The RBK Series combines a 2-phase stepping motor with a DC input microstep driver. The RBK Series is available with either a standard or IP65-rated 2-phase stepping motor. The RBK Series includes Oriental Motor's proprietary Smooth Drive Function, to easily achieve low-vibration operation.

The Smooth Drive Function automatically controls the motor's microstep drive operation at the same travel and speed as in the full-step mode, without the operator having to change the speed settings of the driver's pulse input. It enables low-vibration operation available with the microstepping drive to be achieved with the flick of a switch.

The microstepping driver electronically divides the basic step angle of the motor (1.8°/step) by up to 128 without the use of a reduction mechanism or other mechanical element. 16 different resolutions levels are available. The available range of resolution settings is 200 (1.8°/step) to 25600 (0.0140625°/step). The step angle can be easily set using the built-in switches on the driver. This function enables low-vibration and and low-noise operation.

The RBK Series utilizes a constant current driver with a wide voltage range of 20 to 75 VDC and 4.5 A/phase effective value (6.3 A/phase peak value)†. This enables it to support a wide range of power sources.
† RBK26* utilizes a constant current driver with a voltage range of 20 to 75 VDC and 4.2 A/phase effective value (5.9 A/phase peak value).
This function corrects motor drive current waveforms. It provides improved angle accuracy and reduced vibration.
This function improves vibrations in the medium speed range of stepping motors. It enables reduced risk of missteps due to vibrations.
RoHS (Restriction of Hazardous Substances) Directive:
Directive on restriction of the use of certain hazardous substances in electrical and electronic equipment (2002/95/EC).
The RoHS Directive prohibits the use of six chemical substances in electrical and electronic products sold in the EU member states. The six controlled substances are: lead, hexavalent chromium, cadmium, mercury and two specific brominated flame-retardants (PBB and PBDE).