RK Series

The smooth drive function is a control method that automatically implements microstep drive based on the same traveling amount and traveling speed used in the full step mode, without changing the pulse input settings. You can easily achieve microstep drive with low vibration with a touch of a button.

The smooth drive function of the RK Series also shortens the settling time.

The basic step angle of the motor can be divided into a maximum of 250 microstep angles without using any mechanical element such as a speed reduction mechanism. 16 levels of step angles are available to set the desired step angle. Setting is easy with the digital switch of the driver. This series makes fine positioning possible, and also makes it possible to perform operation from “low-vibration and low-speed transportation” to “high-speed return” without tuning.

Two types of input voltage are available to be used with most common power supplies around the world.
They also conform to safety standards, ensuring safe operation.

Angular accuracy may worsen with microstep drivers, due to the effect of poor current control.
However, the RK Series is designed through advanced circuit technology and maximizes motor operation at high accuracy.

The RK Series, with its high starting frequency, shortens the machine cycle without affecting acceleration/deceleration rates.
This produces a significant savings in time for an operation in which the same cycle is repeated thousands of times each day.

In the energy-saving mode, the supply of current to the motor is stopped and the load is held only with the electromagnetic brake while the motor remains at a standstill.
Current supply to the motor is stopped and the position is held only with the brake.
This function is effective in reducing the power consumption and extending the motor life. (Electromagnetic brake type only)

The RK Series features UL, CSA recognized products and EN conforming products. (With the RK54□ type, only the driver conforms to the CSA Standard.)
This product has the CE Marking affixed under the EMC Directive and Low Voltage Directive. The RK Series also conforms to the EMC Directive with the addition of only a surge arrester.
An external ferrite core or filter in the motor line or power line is not required.

• Twice the Motor Bearing Life (Compared with a conventional model)

A motor’s life is determined by its bearing. We adopted highperformance bearing grease to lubricate this important component. Accordingly, life is twice as long as a conventional model.
(Limited to standard types with a motor frame size of 60 mm or 85 mm, and standard types with an electromagnetic brake)

• Protective Earth Terminal

(Except for the 42 mm frame size)

The degree of protection conforms to the IP65 specification. (Excluding shaft penetration)

• Terminal-Block Connection Design

The motor can be wired directly from its terminal block.


• No Motor and Driver Relay

Since the motor cable can be connected directly with the driver terminals, there is no need for wire connection or soldering on a relay terminal block.