Product Selection Guide AC Servo - 2023 Edition
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MELSERVO-J5 Series Linear Servo Motor

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MELSERVO-J5 Series Linear Servo Motors

LM-H3

Core type
LM-H3 Series

Maximum speed: 3 m/s
Rated thrust:
    70 N to 960 N
Max. thrust:
    175 N to 2400 N
Core type suitable for space-saving, high speed and high acceleration/deceleration.

LM-H3

Core type
LM-AJ Series

Maximum speed: 2 to 6.5 m/s
Rated thrust:
    68.1 N to 446.8 N
Max. thrust:
    214.7 N to 1409.1 N
Low installation height, and suitable for compact X-Y tables.

LM-F

Core type
(natural/liquid cooling)
LM-F Series

Maximum speed: 2 m/s
Rated thrust:
    300 N to 1200 N (natural cooling)
    600 N to 2400 N (liquid cooling)
Max. thrust:
    1800 N to 7200 N
    (natural/liquid cooling)
Compact core type linear servo motors. The integrated liquid-cooling system doubles the continuous thrust.

LM-K2

Core type with magnetic attraction counter-force
LM-K2 Series

Maximum speed: 2 m/s
Rated thrust:
    120 N to 2400 N
Max. thrust:
    300 N to 6000 N
Longer service life of the linear guides due to the magnetic attraction counter-force structure. Low audible noise.

LM-U2

Coreless type
LM-U2 Series

Maximum speed: 2 m/s
Rated thrust:
    50 N to 800 N
Max. thrust:
    150 N to 3200 N
No cogging, small speed fluctuation. No magnetic attraction force, longer service life of the linear guides.

LM-AU

Coreless type
icon new
LM-AU Series

Maximum speed: 2 to 4.5 m/s
Rated thrust:
    28 N to 350 N
Max. thrust:
    122 N to 1764 N
No cogging, small speed fluctuation.
No magnetic attraction force, longer life of the linear guides.

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Basic Performance

  • Maximum speed: 3 m/s (LM-H3 series), 6.5 m/s (LM-AJ series)
  • Maximum thrust range: 122 N to 7200 N. Small size and high thrust are achieved by the increased winding density and the optimized core and magnet geometries as a result of electromagnetic field analysis.
  • Six series are available: core (two series), liquid-cooling core, magnetic attraction counter-force core, and coreless (two series) types.
  • The linear servo motors are compatible with a variety of serial interface linear encoders. The linear encoder resolution ranges from 1 nm and up.
  • High-performance systems such as high-accuracy tandem synchronous control are achieved with CC-Link IE TSN.
  • The linear servo motors feature environmental resistance, designed for an altitude of 2000 m and an ambient temperature of up to 60 ℃. *1, 2
  • *1. Derate the speed/thrust when using the linear servo motors at an altitude exceeding 1000 m and at high ambient temperatures.
  • *2. LM-AJ series/LM-AU series are designed for an altitude of 1000 m and an ambient temperature of up to 40 ℃.
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Higher Machine Performance

For higher machine performance

  • Improved productivity due to high-speed driving part.

For easier use

  • The linear servo motors enable a simple and compact machine with high rigidity.
  • Smooth operation and clean systems are achieved.

For flexible machine configurations

  • Multi-head and tandem systems are easily configured.
  • The linear servo motors are suitable for long-stroke applications.

[Offers more advantage than conventional ball screw driving systems]

Offers more advantage than conventional ball screw driving systems

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Ideal for Multi-Head Systems

Ideal for Multi-Head Systems

  • The linear servo motors configured in tandem are suitable for large systems that require highly accurate synchronous operation between two axes.
  • Multi-head systems enable control of two motor coils independently, thereby simplifying machine mechanisms. This system is suitable for machines that require a short cycle time.
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LM-H3 Series / LM-AJ Series

LM-H3 Series / LM-AJ Series Structure

LM-H3 Series / LM-AJ Series Structure

  • The motor primary side consists of laminated core and motor coil. The coil is inserted into the slots on the core. The entire section is molded with resin.
  • The secondary side consists of permanent magnets and a mounting plate. The permanent magnets are precisely positioned and fixed on the mounting plate, and then covered with stainless steel plate.
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LM-F Series

LM-F Series Structure

LM-F Series Structure

  • The basic structure is the same as the LM-H3 series. However, this series has a liquid-cooling pipe in the primary side to suppress heat generation.
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LM-K2 Series

LM-K2 Series Structure

LM-K2 Series Structure

  • The motor primary side consists of laminated core and motor coil. The coil is inserted into the slots on the core. The entire section is molded with resin.
  • The secondary side consists of permanent magnets and mounting plates. The permanent magnets are precisely positioned and fixed on the mounting plates, which are located on both sides of the primary side, and then covered with stainless steel plate.
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LM-U2 Series / LM-AU Series

LM-U2 Series / LM-AU Series Structure

LM-U2 Series Structure

  • The motor primary side consists of motor coil and no laminated core. The coil is precisely positioned on the base, and molded with resin.
  • The secondary side consists of permanent magnets and a mounting plate. The permanent magnets are precisely positioned and fixed to face each other on a U-shaped mounting plate.
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