RKII Series0 pages

A-84
0.72°/Geared Stepper Motor and Driver Package

•Technical reference
➜ Page H-1
•Regulations & Standards ➜ Page I-2

RK Series
●For detailed information about regulations and standards, please see the Oriental
Motor website.

It is a 0.72° stepper motor and driver package with
improved basic performance and ease of use, achieved
by combining the newly developed high efficiency 0.72°
stepper motor with a full digital control microstep driver to
maximize motor performance.
•Starting from $461.00
• Increased Accuracy, Decreased Vibration, Increased Torque
•High Efficiency Allows for Reduced Power Consumption
and Lower Heat Generation
•A Variety of Geared Types are Available to Suit the
Application.
•2 Driver Types to Choose from
Built-in Controller Type
/Pulse Input Type
•Various Easy-to-use Functions
•Improved Noise Resistance through Line Driver Connection

Pulse Input Type

Built-in Controller Type

View Expanded Product Information,
Specifications, CAD, Accessories & more online.
Visit www.orientalmotor.com/catalog or use
the QR code and select "RK Series".

What is FLEX?
FLEX is the collective name for products that support I/O control,
Modbus (RTU) control, and FA network control via network converters.
These products enable simple connection and simple control,
shortening the total lead time for system construction.

■Features
High-Efficiency at Low Price
The RK Series offers significant
improvements in motor performance,
driver operation and functions compared to
conventional products and is available at a
new lower price. In this example, the RK
Series is $103.00 less.
● List Price starting from $461.00

Conventional Product:
RK Series
□60 mm (2.36 in.)
Standard Type

RK Series
Pulse Input Type
□60 mm (2.36 in.)
Standard Type

$609.00

$506.00

Advanced Performance
●High Accuracy

0.72°

●Low Vibration
Utilizing a full-time microstepping driver
controlled by a digital system improves the
vibration characteristics of the 0.72° stepper
motor. Current control is also done by a high
specification digital CPU. This product uses
PWM control instead of PAM control resulting
in a sinusoidal wave form in each phase,
significantly reducing vibration.

0.72°

Conditions
· Ball screw lead: 10 mm (0.39 in.)
· Motor used: RK Series

Stopping Accuracy: ±0.0014 mm
◇Current Waveform in Motor
(theoretical figure)

RK Series: Sinusoidal Wave
Conventional Products: Trapezoidal Wave

Vibration is reduced when the motor
current waveform changes from trapezoidal
to sinusoidal.

A-84

ORIENTAL MOTOR GENERAL CATALOG
2015/2016

Page

1.44°

±0.05°

Positioning Accuracy±0.05˚
◇Vibration Characteristics Comparison
1.40
Vibration Component Voltage [Vp-p]

The positioning accuracy of the RK Series is
±0.05˚ (±3 arcmin). When used in combination
with a ball screw as shown in the figure on the
right, the positioning accuracy is ±0.0014 mm.
The accuracy of a regular ground ball screw is
±0.01 mm, thus the accuracy is high enough
for positioning operation.

1.20
1.00
0.80
0.60
0.40
0.20
0
0

100

200

300

400

500

speed [r/min]
RKS566AC-3 Step Angle: 0.72°
1.8° Stepper Motor That Uses Micro Step Driver

Features A-84 / System Configuration A-94 / Product Line A-96 / Specifications, Characteristics A-100
Dimensions A-110 / Connection and Operation A-121 / Motor and Driver Combinations A-130