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












