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UXX Series – Ironless Linear Motors

The highest force ironless linear motors in the range, with continuous force from 141 N to 846 N, peak force from 700 N to 4200 N and speeds up to 6.6 m/s at 300 V. Direct drive design with zero cogging for the most demanding high load applications.

Product Overview

Motion Type

Linear

Technology

Ironless

Product Range

Linear Motors

Series

UXX

Key Performance Specs

  • Continuous Force: 846 mm
  • Maximum Speed: 6.6 m/s

Key Features

  • Continuous force range 141 N to 846 N
  • Peak force range 700 N to 4200 N
  • Speeds up to 6.6 m/s at 300 V
  • Motor size 48 mm wide x 124.8 mm high
  • Magnet pitch 57 mm
  • N and S winding variants available
  • PTC 1 kΩ and NTC thermal protection
  • Ironless design for smooth, cog-free motion
  • Direct drive technology with no mechanical transmission

UXX Series – Ironless Linear Motors

UXX Series of Ironless Linear Motors

The UXX 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 UXX 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 UXX 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: UXX Series – Ironless Linear Motors

UXX Series Ironless Symbol Unit UXX3 N UXX3 S UXX6 N UXX6 S UXX9 N UXX9 S UXX12 N UXX12 S UXX18 N
Motor type, max voltage ph-ph 3-phase synchronous ironless, 230 V ac rms (325 V dc)
Peak force (magnet @ 25°C) Fp N 700 1400 2100 2800 4200
Continuous force (coils @ 110°C) Fc N 141 282 423 564 846
Maximum speed (@ 300 V) vmax m/s 2.7 6.6 2.7 6.6 2.7 6.6 2.7 6.6 2.7
Motor force constant (mount. sfc. @ 20°C) K N/Arms 124 50.3 124 50.3 124 50.3 124 50.3 124
Motor constant (coils @ 25°C) S N²/W 323 647 970 1293 1940
Peak current (magnet @ 25°C) Ip Arms 5.6 13.9 11.3 28 16.9 42 22.6 56 34
Maximum continuous current (coils @ 110°C) Ic Arms 1.14 2.80 2.27 5.6 3.4 8.4 4.5 11.2 6.8
Back EMF phase-phase peak Bemf V/m/s 101 41 101 41 101 41 101 41 101
Resistance per phase (coils @ 25°C ex. cable) Rph Ω 15.8 2.6 7.9 1.29 5.3 0.86 4.0 0.65 2.6
Induction per phase Lph mH 28 4.6 14 2.3 9 1.5 7 1.2 4.7
Electrical time constant (coils @ 25°C) τe ms 1.8 1.8 1.8 1.8 1.8
Maximum continuous power loss (all coils) Pc W 82 165 247 330 494
Thermal resistance (coils to mount. sfc.) Rth °C/W 1.04 0.52 0.35 0.26 0.17
Thermal time constant (up to 63% max. coil temp.) τth s 156 156 156 156 156
Temperature cut-off / sensor PTC 1 kΩ / NTC
Coil unit weight (ex. cables) W kg 0.55 0.95 1.35 1.75 2.55
Coil unit length (ex. cables) L mm 134 248 362 476 701
Motor attraction force Fa N 0 0 0 0 0
Magnet pitch NN τ mm 57 57 57 57 57
Cable mass m kg/m 0.18 0.18 0.18 0.18 0.18
Cable type (power), length 1 m d mm (AWG) 6.4 (18) except UXX3S
Cable type (sensor), length 1 m d mm (AWG) 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. The UXX3S is only available with a FLEX power cable, specified separately below.

UXX3S Power Cable (FLEX cable of 3 m)
Cable type 9.0 (21) mm (AWG)
Cable life, minimum 5,000,000 cycles
Bending radius static, minimum 4x cable diameter
Bending radius dynamic, minimum 10x cable diameter

Cable life depends on bending radius, velocity and acceleration.

Product Dimensions: UXX Series – Ironless Linear Motors

Magnet Yoke Dimensions
Le (mm) 114 171 456
M6 bolts 2 3 8
Mass (kg/m) 25

Magnet yokes can be butted together.

Product Technical Drawings: UXX Series – Ironless Linear Motors

UXX Series - Ironless Linear Motors technical drawing