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UL Series – Ironless Linear Motors

High force ironless linear motors with continuous force from 70 N to 350 N, peak force from 240 N to 1200 N and speeds up to 12 m/s at 300 V. Direct drive design with zero cogging for smooth, accurate motion under substantial load.

Product Overview

Motion Type

Linear

Technology

Ironless

Product Range

Linear Motors

Series

UL

Key Performance Specs

  • Continuous Force: 350 mm
  • Maximum Speed: 12 m/s

Key Features

  • Continuous force range 70 N to 350 N
  • Peak force range 240 N to 1200 N
  • Speeds up to 12 m/s at 300 V
  • Motor size 28.4 mm wide x 105 mm high
  • Magnet pitch 42 mm
  • Ironless design for smooth, cog-free motion
  • Direct drive technology with no mechanical transmission

UL Series – Ironless Linear Motors

UL Series of Ironless Linear Motors

The UL Series ironless linear motor by Tecnotion is a high precision linear motor designed to excel in demanding industrial conditions. Its robust construction suits a wide variety of industries. Using direct drive technology, the UL Series enhances productivity, accuracy and dynamic performance, eliminating the need for mechanical transmissions such as rack and pinion, belts and speed reducers. The absence of contact between the coil unit and magnets ensures zero mechanical wear. This approach enables slimmer, modular designs while reducing cost, setting a high standard for precision, durability and versatility across industrial applications.

Ironless Linear Motor

The UL Series of ironless linear motors from Tecnotion offers a precision motion solution across a broad range of applications. These motors deliver exceptional precision and accurate motion, making them well suited to demanding tasks. Ironless linear motors also offer efficient thermal performance, preventing overheating and helping to extend motor life. The result is a reliable, efficient solution for applications that demand precision motion with zero cogging.

Applications for Linear Motors

Precision linear motors are central to applications demanding high levels of accuracy and repeatability. They are widely used in laser cutting, scanning, digital printing, and electronics assembly and inspection. They also feature in processes such as Automatic Optical Inspection (AOI) and laser micro-machining, where ultra precision and accurate scan motion are required. In medical and scientific equipment, precision linear motors are relied on for accuracy and repeatability across every cycle.

Product Specifications: UL Series – Ironless Linear Motors

UL Series Ironless Symbol Unit UL3 N UL3 S UL6 N UL6 S UL9 N UL9 S UL12 N UL12 S UL15 N UL15 S
Motor type, max voltage ph-ph 3-phase synchronous ironless, 230 V ac rms (325 V dc)
Peak force (magnet @ 25°C) Fp N 240 480 720 960 1200
Continuous force (coils @ 110°C) Fc N 70 140 210 280 350
Maximum speed (@ 300 V) vmax m/s 5 12 5 12 5 12 5 12 5 12
Motor force constant (mount. sfc. @ 20°C) K N/Arms 68 27.5 68 27.5 68 27.5 68 27.5 67.5 27.5
Motor constant (coils @ 25°C) S N²/W 97 195 290 390 485
Peak current (magnet @ 25°C) Ip Arms 3.5 8.7 7 17.5 10.5 26.2 14.1 35 17.8 44
Maximum continuous current (coils @ 110°C) Ic Arms 1.03 2.6 2.1 5.1 3.1 7.6 4.2 10.2 5.2 12.9
Back EMF phase-phase peak Bemf V/m/s 55.5 22.5 55.5 22.5 55.5 22.5 55.5 22.5 55.5 22.5
Resistance per phase (coils @ 25°C ex. cable) Rph Ω 15.9 2.6 8.0 1.28 5.3 0.85 4.0 0.64 3.3 0.53
Induction per phase Lph mH 13 2.0 6.5 1.0 4.2 0.7 3.2 0.5 3 0.4
Electrical time constant (coils @ 25°C) τe ms 0.8 0.8 0.8 0.8 0.8
Maximum continuous power loss (all coils) Pc W 67 134 200 270 335
Thermal resistance (coils to mount. sfc.) Rth °C/W 1.3 0.65 0.43 0.32 0.26
Thermal time constant (up to 63% max. coil temp.) τth s 72 72 72 72 72
Temperature cut-off / sensor PTC 1 kΩ / NTC
Coil unit weight (ex. cables) W kg 0.25 0.47 0.69 0.91 1.13
Coil unit length (ex. cables) L mm 106 190 274 358 442
Motor attraction force Fa N 0 0 0 0 0
Magnet pitch NN τ mm 42 42 42 42 42
Cable mass m kg/m 0.09 0.09 0.09 0.105 0.105
Cable type (power), length 1 m d mm (AWG) 5.8 (20) 6.4 (18)
Cable type (sensor), length 1 m d mm (AWG) 4.3 (26) 4.3 (26)

All specifications ±10%. Values assume a mounting surface at 20°C with the motor driven at maximum continuous current. Actual values depend on bus voltage.

Product Dimensions: UL Series – Ironless Linear Motors

Magnet Yoke Dimensions
Le (mm) 126 168 210 546
M5 bolts 3 4 5 13
Mass (kg/m) 11.2

Magnet yokes can be butted together.

Product Technical Drawings: UL Series – Ironless Linear Motors

UL Series - Ironless Linear Motors technical drawing