Linear Actuators > Linear Cylinders > EAC Closed Loop AZ Series Absolute Encoder Linear Cylinders

EAS Series Closed Loop Linear Slides

EAC Closed Loop AZ Series Absolute Encoder Electric Linear Cylinders / Linear Actuators

The αSTEP EAC Series electric linear actuators are quick and responsive and incorporate a ball screw design, offering high performance from low speed to high speed or with light loads or heavy loads, regardless of demanding operating conditions. Available in a straight type or reversed motor type and with a shaft guide and cover version also available, saves design time and parts. All αSTEP EAC Series are available with an electromechanical brake ideal for vertical operations.

Equipped with battery-free absolute encoder
Positioning information can be known without a sensor
High reliability using closed loop control
Reduced motor heat and reduced energy consumption through high efficiency design
Electromagnetic Brake available
AC or DC Input
Requires AZ Series Driver (sold separately)

Mechanical Absolute Encoder

Product Lineup
Product Features
Drivers & Accessories
System
Downloads & Reference

Linear Actuator Lineup

Type	Power Input	Options	Thrust Force* (N)	Push Force* [N]	Stroke (mm)
EAC4 Straight Type 42 mm x 42 mm Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~70 or ~140	100 or 200	50 ~ 300
	DC Input
EAC4 with Guide Straight Type 42 mm x 42 mm (42 mm x 114 mm with Guide) Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~70 or ~140	100 or 200	50 ~ 300
	DC Input
EAC4 Reversed Motor Type 42 mm x 42 mm Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~70 or ~140	100 or 200	50 ~ 300
	DC Input
EAC4 with Guide Reversed Motor Type 42 mm x 42 mm (42 mm x 114 mm with Guide) Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~70 or ~140	100 or 200	50 ~ 300
	DC Input
Type	Power Input	Options	Thrust Force* (N)	Push Force* [N]	Stroke (mm)
EAC6 Straight Type 60 mm x 60 mm Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~200 or ~400	400 or 500	50 ~ 300
	DC Input
EAC6 with Guide Straight Type 60 mm x 60 mm (60 mm x 156 mm with Guide) Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~200 or ~400	400 or 500	50 ~ 300
	DC Input
EAC6 Reversed Motor Type 60 mm x 60 mm Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~200 or ~400	400 or 500	50 ~ 300
	DC Input
EAC6 with Guide Reversed Motor Type 60 mm x 60 mm (60 mm x 156 mm with Guide) Linear Actuator	AC Input	6 mm or 12 mm Lead Electromagnetic Brake	~200 or ~400	400 or 500	50 ~ 300
	DC Input

Repetitive Positioning Accuracy = ±0.02 mm

*Thrust Force = ~70 N (EAC4, 12 mm Lead), ~140 N (EAC4, 6 mm Lead), ~200 N (EAC6, 12 mm Lead) or ~400 N (EAC6, 6 mm Lead)

*Push Force = 100 N (EAC4, 12 mm Lead), 200 N (EAC4, 6 mm Lead), 400 N (EAC6, 12 mm Lead) or 500 N (EAC6, 6 mm Lead)

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Linear Actuators
Motor Features
αSTEP Performance
Types and Options

Linear Cylinders

Compact, High Thrust Linear Actuator

Using aluminum for the rod, these motorized cylinders produce high thrust force despite their compact and lightweight body. The unique structure suppresses vibration to achieve improved acceleration characteristics and high-speed positioning operation.

Linear Cylinder

Flexible Installation

The EAC Series cylinders can be installed as follows.

Installation

Variable Cable Outlet Direction

The stepper motor attachment direction can be changed to any of 4 directions*, allowing the cable outlet to be changed to best suit the installation location.

*3 directions for reversed motor types.

Cable Direction

Application Example

High Speed Driving

High Response

By utilizing the high response of the stepper motor, short distances can be covered quickly. Movement follows commands without delay.

High Response

No External Sensors Required

Because the absolute motor sensor (ABZO) is built-in, there's no need for a battery to store the positioning information, or for a home sensor, or external sensors or any other external sensors.

Cost Reduction
Simplified Wiring
Not Affected by Sensor Malfunctions
Improved Return-to-Home Accuracy

High-Speed Return-to-Home

Regular Return-to-Home

With the use of limit sensors and home sensors to detect the home point at low speeds, return-to-home is time consuming.

Return-to-Home Operation of the AZ Series

Without the need to detect using limit sensors or the home sensor, the equipment can travel directly at high speed of the home position recorded by the motor sensor.

Return-to-Home Not Required (For built-in controller type)

Since the position information is known even when the power supply is turned off, operation can resume without return-to-home after an emergency stop or power outage.

Mechanical Type Absolute Encoder Motor

Advanced Technology at Affordable Prices

Mechanical Absolute Encoder

Oriental Motor has developed and patented a compact, low-cost, battery-free mechanical type absolute sensor. The AZ Series is available at affordable prices and can contribute to improved productivity and cost reductions.

Mechanical-Type Encoder (No Battery Required)

A mechanical sensor composed of multiple gears is employed. Positioning information is detected by recognizing the angle of the individual gears. As a result, it does not require a battery.

Multiple-Rotation Absolute System*

Absolute position detection is possible with ±900 rotations (1800 rotations) of the motor shaft from the home position.

Home Setting Method*

The home position can be easily set by pressing a switch on the drivers surface, which is saved by the Mechanical Absolute Encoder. In addition, home setting is possible with the MEXE02 data setting software or external input signal.

Home position is easy to adjust by moving the motor to a desired position manually.

HOME Setting Switch

*Requires AZ Series Driver

No Battery Required

No battery is required thanks to a mechanical-type sensor. Because positioning information is managed mechanically by the Mechanical Absolute Encoder, the positioning information can be preserved, even if the power turns off, or the cable between the motor and the driver is disconnected.

No battery required

Reduced Maintenance

Because there is no battery that needs replacement, maintenance time and costs can be reduced.

Unlimited Driver Installation Possibilities

Because there is no need to secure space for battery replacement, there are no restrictions on the installation location of the driver, improving the flexibility and freedom of the layout design of the control box.

Safe for Overseas Shipping

Normal batteries will self-discharge, so care must be taken when the equipment requires a long shipping time, such as when being sent overseas. The Mechanical Absolute Encoder does not require a battery, so there is no limit to how long the positioning information is maintained. In addition, there is no need to worry about various safety regulations, which must be taken into consideration when shipping a battery overseas.

Position Holding Even when the Cable between the Motor and Driver is Detached

Positioning information is stored within the Mechanical Absolute Encoder.

*Because the positioning information is stored in the Mechanical Absolute Encoder, the home position must be reset if the motor is replaced.

High Reliability

High Reliability is provided by using the control method unique to Oriental Motor that combines the merits of both open loop control and closed loop control.

Continues Operation Even with Sudden Load Fluctuation and Sudden Acceleration

In normal conditions, it operates synchronously with pulse commands under open loop control, and because of its compact size and high torque generation, it has excellent acceleration performance and response. In an overload condition, it switches immediately to closed loop control to correct the position.

Alarm Signal Output in Case of Abnormality

If a continuous overload is applied, an alarm signal is output. Also, when the positioning is completed, a signal is output. This provides high reliability.

No Tuning Required

Because it is normally operated with open loop control, positioning is still possible without gain tuning even when the load fluctuates due to the use of a belt mechanism, cam or chain drive, etc.

Holding the Stop Position

During positioning, the motor stops with its own holding force without hunting. Because of this, it is ideal for applications where the low rigidity of the mechanism requires absence of vibration upon stopping.

Energy Saving

Heat generation is reduced thanks to the high efficiency motor, resulting in energy savings.

Lower Heat Generation

Heat generation by the motor has been significantly reduced through higher efficiency.

Lower heat generation stepper motor surface temperature

stepper motor power consumption

αSTEP Control System

Hybrid Control System

The hybrid control system constantly monitors the motors position allowing for the benefits of performance from "open loop" control while providing the assurance of "closed loop " performance.

Reversed Motor Type

Reversed Motor types are provided for all linear actuators. This contributes to a shorter overall length and space savings.

Reversed Motor

Simple Maintenance for Reversed Motor Type

Maintainability has been improved by using Oriental Motor's unique belt tension adjustment mechanism and through the standardization of maintenance parts based on the AZ Series.

Thanks to Oriental Motor's unique belt tension adjustment mechanism, belt replacement is easy.

If the screw is loosened, the belt tension is adjusted to an appropriate value by the force of the spring.

Shaft Guide with Cover

There is no need to design or procure parts for the external guide. Moving parts on the cylinder main unit side are protected, improving equipment safety. This is useful for grease splash prevention in the shaft guide section and the prevention of the infiltration of foreign particles in the linear bush section.

Shaft Guide with Cover

Electromagnetic Brake

Vertical operation is possible with electromagnetic brake. The load position can be held when the power is cut off. Since the work will not fall in case of power failure or disconnection, you can safely use equipment in which the work moves vertically.

Vertical Operation

AZ Series AC Input Drivers

The αSTEP AZD (AC Input) Drivers offers superior high speed performance, high functionality and closed loop control. There are no external sensors to buy as the motor and driver complete the system. Advanced operation and function control is included through our MEXE02 software (free download). The αSTEP AZD (AC Input) Drivers can perform quick positioning operations over a short distance without the need for tuning, while providing smooth performance.

Built-in Protective Functions
Emergency Torque Off Function
Pulse Input, Pulse Input with RS-485 Communications, Built-in Controller (Network), EtherCAT, EtherNet/IP™ or PROFINET Types
Single-Phase 100-120 VAC or Single-Phase/Three-Phase 200-240 VAC
For use with αSTEP AZ Series Motors (AC Input)

AZ Series DC Input Drivers

The αSTEP DC Input Drivers offer 24/48 VDC input voltage, high functionality and closed loop control. There are no external sensors to buy as the motor and driver complete the system. The αSTEP AZD-K (DC Input) can perform quick positioning operations over a short distance without the need for tuning, while providing smooth performance.

Built-in Protective Functions
Pulse Input, Pulse Input with RS-485 Communications, Built-in Controller (Network), EtherCAT, EtherNet/IP™ or PROFINET Types
24/48 VDC
For use with αSTEP AZ Series Motors (DC Input)

Multi-Axis Controller / Driver (EtherCAT)

A multi-axis controller that supports EtherCAT communication.Compatible with the CiA402 drive profile. It can be connected to the AZ Series DC input motors and electric actuators.

2-axis, 3-axis and 4-axis driver connections are available.