DUM U-Channel Linear Motor Module

DUM Series U-Channel Linear Motor Modules — ironless direct drive, zero cogging, smooth and precise

DUM Series U-Channel Linear Motor Module — custom width and travel

The Fanlin DUM series U-channel linear motor modules are built on ironless (U-channel) linear motor direct-drive technology. The forcer coils are epoxy-potted around an I-beam core, and twin magnet tracks enclose the magnetic circuit on both sides. With no iron core, the design eliminates cogging and magnetic attraction forces, delivering exceptionally smooth motion with ultra-low velocity ripple. The lightweight forcer enables high acceleration and fast response, while high-resolution optical encoders provide sub-micron repeatability. Magnet tracks splice modularly so travel can be extended per application, ideal for light-load, high-speed, high-precision automation.

Fanlin Tech specializes in precision motion control. The DUM series is centered on ironless U-channel direct-drive technology: zero cogging delivers ultra-low velocity ripple and outstanding positioning stability, the lightweight forcer delivers high acceleration, and spliced magnet tracks with multi-coil combinations support custom travel and thrust for precision assembly, dispensing, inspection and high-speed scanning.

Drive

Ironless U-Channel Linear Motor Direct-Drive

Motor Integration

Built in; configured to installation and application

Continuous Force

32 – 193 N (by forcer size)

Peak Force

130 – 770 N

Max Speed

3 m/s

Maximum Acceleration

Confirm by moving mass and forcer configuration

Velocity Ripple

≤ 0.5%

Repeatability

1 μm / 0.1 μm / 50 nm (configuration dependent)

Feedback

Full closed-loop grating; interface configured by package

Travel Range

60 – 3000 mm (spliced magnet track, custom)

Electrical & Controls

Configured by system package

Ironless, Zero Cogging

No cogging or magnetic attraction; velocity ripple below 0.5% for smooth motion even at low speed

Lightweight, High Acceleration

Low forcer mass and inertia deliver fast start/stop response for high-frequency shuttling and scanning

Multi-Level Precision

Three repeatability options—1 μm, 0.1 μm and 50 nm—deliver consistent positioning for each application

Easy Assembly, Low Maintenance

No attractive forces simplify assembly and maintenance; spliced magnet tracks allow flexible travel and thrust

Precision Assembly

Light-load pick-and-place, mounting and positioning with cog-free motion for smooth, consistent paths

Dispensing

High-speed, high-precision dispensing trajectories with ripple-free multi-point switching

Semiconductor Inspection

Precision stepping for inspection and metrology stations; low ripple safeguards imaging quality

High-Speed Scanning

Reciprocating scanning and spectral measurement balancing throughput with smooth motion

Product Showcase

Models & Customization

Detailed Specifications

FL-DUM-110-840

Model	FL-DUM-110-840
Width (mm)	110
Travel (mm)	840
Continuous Force	32 – 193 N (by forcer size)
Peak Force	130 – 770 N (by forcer size)
Maximum Velocity	3 m/s
Maximum Acceleration	Confirm by moving mass, payload and forcer configuration
Velocity Ripple	≤ 0.5%
Repeatability	1 μm / 0.1 μm / 50 nm (configuration dependent)
Drive	Ironless U-channel linear motor direct drive
Feedback	Full closed-loop grating; resolution and interface configured by precision grade
Electrical & Controls	Confirm input power, servo drive, controller and control bus by system package
Cabling & Safety Interfaces	Configure power, feedback, limits, home, thermal protection and emergency-stop interfaces by electrical package
Mounting & Dimensions	110 mm-wide U-channel horizontal mounting; confirm mounting pattern by drawing
Expansion Options	Forcer, feedback, cable carrier, limits, cover and cooling options

Without an iron core, the motor has no cogging or normal attractive forces, producing extremely smooth motion with low velocity ripple, and positioning accuracy is limited only by the feedback device. It suits light-load, high-speed, high-precision applications; choose the iron-core DM series when higher force is required.

Yes. Magnet tracks splice modularly for 60 – 3000 mm travel, and multi-coil forcer combinations raise continuous force; feedback, cable tracks and protection are configured per application.

Share the moving mass, external payload, travel, maximum velocity, target acceleration, allowable velocity ripple, motion profile, cycle time, continuous operating time, facility input power and control-bus requirements. The engineering team will use these inputs to size the coil combination, drive, feedback, cooling, cabling and safety interfaces.

Share your travel, speed, payload and accuracy requirements; our engineers will recommend coil combinations, feedback and drive configurations along with a custom proposal.

Request a Quote for DUM U-Channel Linear Motor Modules

Share travel, speed, payload and mounting requirements to receive pricing, lead time and selection support

Request a Quote