Skip to main content

UXA Series – Ironless Linear Motors

High force ironless linear motors with continuous force from 120 N to 720 N, peak force from 615 N to 3690 N and speeds up to 7.2 m/s at 300 V. Direct drive design with zero cogging for demanding high load applications.

Product Overview

Motion Type

Linear

Technology

Ironless

Product Range

Linear Motors

Series

UXA

Key Performance Specs

  • Continuous Force: 720 mm
  • Maximum Speed: 7.2 m/s

Key Features

  • Continuous force range 120 N to 720 N
  • Peak force range 615 N to 3690 N
  • Speeds up to 7.2 m/s at 300 V
  • Motor size 38 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

UXA Series – Ironless Linear Motors

UXA Series of Ironless Linear Motors

The UXA 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 UXA 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 UXA 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: UXA Series – Ironless Linear Motors

UXA Series Ironless Symbol Unit UXA3 N UXA3 S UXA6 N UXA6 S UXA9 N UXA9 S UXA12 N UXA12 S UXA18 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 615 1230 1845 2460 3690
Continuous force (coils @ 110°C) Fc N 120 240 360 480 720
Maximum speed (@ 300 V) vmax m/s 2.9 7.2 2.9 7.2 2.9 7.2 2.9 7.2 2.9
Motor force constant (mount. sfc. @ 20°C) K N/Arms 107 43.4 107 43.4 107 43.4 107 43.4 107
Motor constant (coils @ 25°C) S N²/W 244 488 732 976 1464
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 87 35 87 35 87 35 87 35 87
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 UXA3S
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 UXA3S is only available with a FLEX power cable, specified separately below.

UXA3S 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: UXA Series – Ironless Linear Motors

Magnet Yoke Dimensions
Le (mm) 114 171 456
M6 bolts 2 3 8
Mass (kg/m) 19

Magnet yokes can be butted together.

Product Technical Drawings: UXA Series – Ironless Linear Motors

UXA Series - Ironless Linear Motors technical drawing