MELSERVO-J5 Series Rotary Servo Motors
Small capacity, low inertia
HK-KT Series
Servo motors with a 26-bit batteryless
absolute position encoder
Rated speed: 3000 r/min *1
Maximum speed: 6700 r/min *1
Our product line includes 400 V and flat type models.
The servo motors have an all-in-one connector, making the connection simple.
Small capacity,
ultra-low inertia
HK-MT Series
Servo motors with a 26-bit batteryless absolute position encoder
Rated speed: 3000 r/min
Maximum speed: 10000 r/min (available with the high-speed type models *2)
The servo motors have an all-in-one connector, making the connection simple.
Medium capacity,
medium inertia
HK-ST Series
Servo motors with a 26-bit batteryless absolute position encoder
Rated speed: 2000 r/min, 3000 r/min
Two types of rated speed are available.
The cables for the encoder, the electromagnetic brakes, and the power are equipped with one-touch lock.
Medium capacity,
ultra-low inertia
HK-RT Series
Servo motors with a 26-bit batteryless absolute position encoder
Rated speed: 3000 r/min
Maximum speed: 6700 r/min *1
Our product line includes 400 V and flat type models.
The servo motors (1 to 2 kW) have an all-in-one connector, making the connection simple.
- *1. The speed varies by the model type.
- *2. The high-speed type models are equipped with an incremental encoder.
Batteryless Absolute Position Encoder as Standard
Eliminate the Need for Purchase/Replacement/Stock Control
Servo motors come equipped with a batteryless absolute position encoder as standard, making it possible to configure absolute position systems without the use of batteries or any other options.
Moreover, maintenance costs are reduced as a result of eliminating the battery replacement and stock control.
Reduce Wiring for Multi-Axis Systems
In a conventional multi-axis system, battery cables are necessary between the servo amplifiers. Now that the batteries are not required with the use of the batteryless absolute position encoders, wiring battery cables for multi-axis systems is not required.
Save Time in Transporting
Position data remains stored even when the rotary servo motors are disconnected from the servo amplifiers. Thus, control cabinets can be separated from the machines without losing the position data, making it easy to transport machines for use at a new location.
The encoder does not require lithium metal batteries, allowing machines to be transported by air or sea without special handling.
Single Connector/One-Touch Lock/Single Cable Type
Single Connector/Single Cable Type/One-Touch Lock HK-KTHK-MTHK-RT
The single connector for the HK-KT/HK-MT/HK-RT *1 series combines the motor power supply, encoder, and electromagnetic brake into a single cable. The one-touch lock eliminates the need for tightening screws, making wiring easy. The servo motors are also compatible with the dual cable type. The cables can be mounted either horizontally or vertically according to your selection.
Refer to "MELSERVO-J5 catalog" for details of servo motor cables.
- *1. The single connector is available for 1 to 2 kW of HK-RT series.
Horizontally mounted single cable type with one-touch lock
Horizontally mounted dual cable type with one-touch lock
Vertically mounted single cable type with one-touch lock
Vertically mounted dual cable type with one-touch lock
Connection example of one-touch lock with single cable type
One-Touch Lock HK-STHK-RT
HK-ST/HK-RT *1 series servo motors boast a greatly simplified installation process through use of the one-touch lock system. The one-touch lock can be used to mount connectors for the motor power supply, encoder, and electromagnetic brake, which eliminates the need for tightening screws. The servo motors are compatible with both straight and angle type connectors and also supports traditional screw-tightened connectors.
- *1. The one-touch lock is available for 3.5 to 7 kW of HK-RT series.
Expanding Combinations of Servo Amplifiers and Servo Motors
The combinations of servo amplifiers and servo motors have been expanded to offer more flexible options for driving servo motors, such as combining a large-capacity servo amplifier for increased torque or combining a servo motor in a different power class.
Refer to "Combinations of Rotary Servo Motors and Servo Amplifiers" for details of the combinations.
Increases Maximum Torque by Combining with Larger-Capacity Servo Amplifiers
- *1. When the maximum torque of HK-KT13W servo motor is increased with the 200 W servo amplifier.
Combining the servo motor with a larger-capacity servo amplifier increases the maximum torque, leading a shorter cycle time.
Drives Smaller Capacity Servo Motors
Servo amplifiers are able to drive servo motors with a smaller capacity than the servo amplifier being used, reducing the kinds of spare parts that are needed.
For example, 400 W servo amplifiers are compatible with the following servo motors: 50 W, 100 W, 150 W, 200 W, and 400 W models.
Drives 200 V/400 V Class Servo Motors
The 200 V servo amplifiers can drive both 200 V and 400 V servo motors, and the 400 V servo motors may produce torque that is sufficient for operation when combined with smaller-capacity 200 V servo amplifiers.
Lowering of the capacity of the servo amplifier contributes to lower costs and reduced installation space.
Compact Servo Motors with a Batteryless Absolute Position Encoder
HK-KT series servo motors come equipped with a batteryless absolute position encoder and are more compact than the previous generation HG-KR series.
Flat types are also available in the HK-KT product line, contributing to a compact machine design.
Improved Environmental Resistance
Servo motors feature enhanced environmental resistance.
Ingress protection (IP) rating of the servo motors: IP67 *1
Designed for an ambient temperature of up to 60 ℃. *2
- *1. If the IP rating of the servo motor differs from those of option cables and connectors, overall IP rating depends on the lowest of all.
- *2. Derate the speed/torque when using the servo motors at high ambient temperatures.
High-Response Operation by Ultra-Low Inertia Servo Motors
The product lines includes HK-MT series (small capacity, ultra-low inertia) and HK-RT series (medium capacity, ultra-low inertia).
The ultra-low inertia servo motors enable a high-response operation that reduces the cycle time of an ultra-high-throughput material handling system.
Compact, High-Power Rate Servo Motors for High-Speed Operation Medium-capacity HK-RT series 1 to 7 kW
Maximum Speed of 10000 r/min Small-capacity HK-MT series 0.05 to 1 kW
The high-power rate servo motors are optimal for packaging machines and material handling systems.
Servo motors with maximum speed of 10000 r/min *1 are added to the product lines, contributing to a shorter cycle time.
- *1. The high-speed type models have "V" in the model name, and are equipped with an incremental encoder.
HK-ST Servo Motors with Rated Speed of 3000 r/min
HK-ST series (medium capacity, medium inertia) includes servo motors with rated speed of 3000 r/min.
Conventional HG-JR servo motors can be replaced with HK-ST series and HK-KT series (small capacity, low inertia) such as HK-KT63UW.
(Motor flange size [mm]: 90 × 90 and 130 × 130)