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MK Series Iron Core Linear Motor

SAHO MK Series Iron Core Linear Motor is designed for automation equipment that requires high thrust, fast response and precise direct drive linear motion. The MK Series can be used in semiconductor equipment, laser processing, precision measurement, inspection systems and electronic manufacturing where stable acceleration, nanometer-level positioning and long service life are important. Compared with screw or belt transmission, a direct drive linear motor reduces mechanical contact and improves motion consistency in high-speed precision linear motion systems.

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MK Series Iron Core Linear Motor Features

High Speed & Acceleration

Maximum speed up to 5m/s, acceleration up to 10G

Nanometer Positioning

Repeat positioning accuracy up to ±0.1μm

Low Noise Operation

Cog-free operation, smooth and quiet

Long Maintenance-Free Life

Non-contact motion, no mechanical wear

Product Series

MK1

Continuous thrust: 103N~308N

Peak thrust: 289N~868N

Motive width: 56mm

Motor length: MK11:118mm/MK12:223mm/MK13:328mm

Stator width: 52mm

Stator length: L120mm/L180mm/L300mm

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MK2

Continuous thrust: 181N~725N

Peak thrust: 512N~2048 N

Motive width: 86mm

Motor length: MK21:118mm/MK22:223mm/MK23:328mm/MK24:433mm

Stator width: 86mm

Stator length: L120mm/L180mm/L300mm

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MK3

Continuous thrust:  292N-1166N

Peak thrust: 823N-3292N

Dynamic wide seat: 116mm

Length of mover: MK31:118mm/MK32:223mm/MK33:328mm/MK34:433mm

Stator width: 116mm

Stator length: L120mm/L180mm/L300mm

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MK4

Continuous thrust: 947N~1579N

Peak thrust: 2675N~4458N

Motive width: 123.5mm

Motor length: MK41:328mm/MK42:538mm

Stator width: 126mm

Stator length: L120mm/L180mm/L300mm

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JKA Series Product Features

  • Cog-Free MotionThe recommended ironless positioning supports smooth motion without the cogging characteristics associated with iron core structures.
  • Low Vibration and Smooth SettlingSuitable for precision systems where vibration control and stable positioning are important.
  • Broad JKA1 and JKA2 CoverageTwo model families provide different continuous and peak thrust ranges for machine designers.
  • Fast Dynamic ResponseThe direct drive structure can support rapid acceleration when correctly matched with the guide, encoder and controller.
  • Flexible Encoder IntegrationEncoder resolution can be selected according to positioning accuracy, velocity stability and settling requirements.
  • Low Mechanical WearNon-contact electromagnetic drive reduces mechanical transmission wear.

How to Choose JKA Series

  1. Define the required payload, continuous thrust, peak thrust, stroke, speed, acceleration,positioning accuracy and settling time.
  2. Select JKA1 or JKA2 according to the required thrust range, payload and accelerationprofile.
  3. Confirm the mover length and stator length based on the required usable stroke andavailable installation space.
  4. Match the encoder resolution and guide rigidity to the required positioning accuracy,velocity stability and settling performance.
  5. Review cable routing, heat dissipation, servo drive capacity and controller compatibilitybefore final integration.
  6. For applications requiring higher continuous or peak thrust beyond the JKA range,compare JKB or WKM Series solutions.

Recommended Applications

  • Precision optical positioning
  • Wafer and semiconductor inspection
  • Laser scanning and measurement
  • Low-vibration test equipment
  • High-precision direct drive stages

Application suitability must be confirmed against the required load, force, travel, speed, acceleration, accuracy, environment and duty cycle.

Related Products and Solutions

MNK Series Product Features

  • Sealed Module ProtectionThe protected module structure helps shield internal motion components from the surrounding machine environment.
  • Long Travel CapabilityCurrent models support maximum travel from 100 mm to 5500 mm.
  • Speed up to 5 m/sThe direct drive module is designed for high-speed long-travel automation when correctly integrated.
  • Integrated Guide SupportThe complete module structure simplifies integration compared with building a motor, guide and enclosure separately.
  • Multi-Axis ReadyMNK can be considered for XY, XYZ and gantry systems where long travel and protected direct drive motion are required.
  • Four Force RangesMNK140, MNK200, MNK230 and MNK270 provide different continuous and peak thrust options.

How to Choose MNK Series

  1. Confirm payload, process force, speed, acceleration, cycle time and required travel.
  2. Select MNK140, 200, 230 or 270 according to continuous force and peak force requirements.
  3. Confirm the usable stroke, total module length and machine installation clearance.
  4. Review cable routing, sensor layout and moving-cable bend radius for long-travel systems.
  5. Check the required protection level and operating environment with SAHO engineers.
  6. For multi-axis integration, confirm gantry synchronization, controller capacity and structural rigidity.

Recommended Applications

  • Long-travel laser processing
  • TFT-LCD and panel handling
  • Electronics and battery production
  • Inspection and test equipment
  • XY and gantry direct drive systems

Application suitability must be confirmed against the required load, force, travel, speed, acceleration, accuracy, environment and duty cycle.

Related Products and Solutions

JKB Series Product Features

  • Cog-Free Ironless StructureSupports smooth electromagnetic force without iron core cogging characteristics.
  • Wide Thrust RangeSix model families cover compact low-force motion through very high peak thrust applications.
  • Low Noise Direct DriveNon-contact direct drive operation supports quiet motion and reduces transmission wear.
  • High Acceleration CapabilityThe broad peak-force range supports fast dynamic movement when correctly sized.
  • Custom Length OptionsMultiple mover and stator lengths support different force, stroke and installation requirements.
  • Precision System IntegrationJKB can be combined with suitable guides, encoders, servo drives and controllers.

How to Choose JKB Series

  1. Select the JKB family according to continuous force, peak force, payload and acceleration.
  2. Use JKB1–JKB3 for compact and medium-force systems; compare JKB4–JKB6 for higher-force requirements.
  3. Confirm mover and stator length against usable stroke, machine footprint and cable routing.
  4. Select encoder resolution and guide rigidity according to precision, velocity stability and settling time.
  5. Review thermal conditions and cooling because continuous force depends on heat dissipation.
  6. Confirm servo drive voltage, current and control compatibility with SAHO before ordering.

Recommended Applications

  • Large precision positioning stages
  • High-acceleration inspection equipment
  • Laser and optical systems
  • Semiconductor-related automation
  • Low-noise direct drive machinery

Application suitability must be confirmed against the required load, force, travel, speed, acceleration, accuracy, environment and duty cycle.

Related Products and Solutions

WJM Series Product Features

  • Compact Iron Core DesignA compact motor profile supports direct drive integration where installation space and force density must be balanced.
  • Fast Dynamic ResponseThe non-contact drive structure supports rapid start-stop motion and stable acceleration for inspection and handling equipment.
  • Precision Direct Drive MotionWJM motors can be combined with a suitable guide, encoder and controller for accurate positioning and smooth motion.
  • Flexible Cooling IntegrationNatural cooling or additional thermal management can be selected according to continuous thrust, duty cycle and machine layout.
  • Low Mechanical WearDirect drive motion removes belt and screw transmission contact, helping reduce wear and routine transmission maintenance.
  • Scalable Motor LengthsMultiple mover and stator lengths allow the motor to be matched to different thrust, stroke and installation requirements.

How to Choose WJM Series

  1. Confirm the required continuous thrust and peak thrust from payload, acceleration, friction and cycle time.
  2. Select WJM when a compact iron core motor is preferred over the higher-force WKM range.
  3. Confirm mover length, stator length, usable stroke and installation space before final selection.
  4. Choose the encoder resolution and guide system according to repeatability, settling time and rigidity requirements.
  5. Review duty cycle and heat dissipation. Higher continuous force may require additional cooling.
  6. Share the load, stroke, speed, acceleration and control requirements with SAHO for final model matching.

Recommended Applications

  • Laser focusing and precision positioning
  • Electronics assembly and inspection
  • Precision measurement equipment
  • Semiconductor-related automation
  • Compact linear motor stages

Application suitability must be confirmed against the required load, force, travel, speed, acceleration, accuracy, environment and duty cycle.

Related Products and Solutions

WKM Series Product Features

  • High Force DensityThe iron core structure provides high continuous and peak thrust for heavy industrial direct drive motion.
  • Wide Thrust CoverageFive current model families allow matching from medium-force systems to large high-thrust positioning platforms.
  • Rapid AccelerationWKM supports high dynamic performance when the motor, payload, guide and controller are correctly sized.
  • Thermal Management OptionsCooling selection can be matched to continuous thrust, duty cycle and ambient operating conditions.
  • Encoder and Control IntegrationThe motor can be combined with suitable linear encoders, servo drives and motion controllers for precision positioning.
  • Low Transmission WearDirect drive operation removes screw and belt transmission components from the force path.

How to Choose WKM Series

  1. Calculate continuous and peak force from payload, acceleration, process force, friction and duty cycle.
  2. Select the WKM model family according to the required force range and available mover width.
  3. Confirm whether natural, air or water-assisted cooling is required for the target continuous output.
  4. Check guide rigidity, moment load and machine base stiffness before selecting a high-force motor.
  5. Match encoder resolution and servo tuning requirements to the required repeatability and settling time.
  6. Confirm stator length, mover length, cable routing and installation clearance with SAHO engineers.

Recommended Applications

  • Heavy-duty laser processing platforms
  • Semiconductor and display equipment
  • High-force inspection stages
  • Large precision positioning systems
  • Industrial direct drive automation

Application suitability must be confirmed against the required load, force, travel, speed, acceleration, accuracy, environment and duty cycle.

Related Products and Solutions

MK Series Iron Core Linear Motor Frequently Asked Questions

01

What is the MK Series iron core linear motor?

The MK Series is an iron core linear motor designed for direct drive precision motion where high thrust, high acceleration and stable positioning are required.

02

When should I choose an iron core linear motor?

An iron core linear motor is suitable when the equipment needs higher thrust density, strong acceleration and compact direct drive motion in precision automation systems.

03

How is MK different from a ball screw or belt driven actuator?

MK provides non-contact direct drive motion without mechanical transmission parts. It is better for high-speed, high-acceleration and low-wear applications, while screw and belt actuators are more mechanical transmission solutions.

04

What applications are suitable for MK Series motors?

MK can be used in semiconductor equipment, laser processing, precision measurement, electronic assembly, inspection systems and advanced automation systems that require accurate linear motion.

05

What should be considered when using MK iron core motors?

The selection should consider thrust, speed, acceleration, heat management, encoder feedback, guide system, installation space and the control system used with the motor.

06

How do I choose between MK1, MK2, MK3 and MK4?

Choose the MK model according to continuous thrust, peak thrust, mover size, stator length, load requirement and acceleration target. Higher-load systems usually require larger MK models.

Application Cases

Spot Welding

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TFT-LCD

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Solar energy

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