Lineax-8

A brushless linear servo-motor driven stage that combines very high speed and precision sub-micron positioning. This is the perfect combination for high throughput and demanding linear motion applications.

  • Environmentally hardened.
  • Precision guiding system provides stable trajectory across long travel and at high speeds.
  • Powerful linear motors are used in the Lineax® series; provide driving force to position high payloads.
  • High resolution encoders are incorporated to allow precise position feedback and closed loop digital servo control.
Other Linear Motor Driven Stage

Lineax-8 Features & Benefits

Lineax® direct drive linear motors for stage positioning exhibit advantages over conventional screw driven stages. LDirect drive systems offer excellent trajectory control. The nature of these stiff, no elastic structures enable faster settling times, higher repeatability with the fastest servo response. Free of rotating inertia, much faster acceleration and higher velocities are achievable. Wear of rotating components is eliminated increasing reliability, uptime, and extending servicing intervals each of these contributes to reducing cost of ownership. The direct drive linear motor with the high-resolution encoder allows precise velocity regulation. The linear motor and other components in Lineax can be prepared for vacuum compatibility.

Lineax-8 structural materials are high-strength aluminum alloys, all surfaces are precision machined, hard coat-anodize finished in light gray. Two precision square type guide rails with re-circulating linear bearings are guided by 2 integrally pre-loaded ball tracks on each rail. The guide system requires only standard lubrication service.

Lineax-8 guide system allows for larger payloads with ultimate stability. The high resolution encoder makes the Lineax a high accurate positioning stage with a repeatability of less than a micron. 

Lineax-8 stages have a compact envelope with no motor overhang. Linear motor, encoder and cables are internal with cables terminating in connectors mounted to the stage's base. A re-circulating bearing system with precision guide rails optimized for pre-load, accuracy, speed, and acceleration ratings support the stages’ high speed, precise motion. The design of the high strength, precision machined, aluminum structure maximizes the stiffness and stability. Standard finish for aluminum components is hard-coat anodized. Special finishes like Teflon impregnated hard-coat, non-anodized, and electroless Nickel can be furnished to accommodate specific application environments. Stainless steel components are made from polished material.

Applications

A linear motor driven stage lacks the mechanical gearing advantage of a screw driven stage and therefore is more application specific. The payload directly affects the acceleration rate according to the F=m•a relationship and the ability of the stage to reach a specific speed, which may affect the cycle time or throughput.

The linear motor generates a substantial peak force when supplied the necessary current by the servo drive. The higher the current, the more heating experiences the copper coil, rising motor temperature. When the application is for precision positioning, the temperature rise has an undesirable effect of influencing accuracy because of thermal induced distortion, either short term or for the duration of operation.

Lineax-8 Specifications

LX-8125 LX-8250 LX-8375 LX-8500 LX-8625 LX-8750
Travel Length 125 mm 250 mm 375 mm 500 mm 625 mm 750 mm
Accuracy
Standard SP ± 11 µm ± 22 µm ± 28 µm ± 32 µm ± 35 µm ± 40 µm
High Precision HP ± 5.5 µm ± 10 µm ± 12 µm ± 14 µm ± 16 µm ± 18 µm
Straightness/Flatness
Standard SP ± 6 µm ± 12 µm ± 12 µm ± 20 µm ± 28 µm ± 36 µm
High Precision HP ± 4 µm ± 6 µm ± 6 µm ± 10 µm ± 14 µm ± 18 µm
Yaw/Pitch/Roll
Standard SP 10 arc-sec 15 arc-sec 20 arc-sec 25 arc-sec 30 arc-sec 35 arc-sec
High Precision HP 8 arc-sec 11 arc-sec 14 arc-sec 17 arc-sec 20 arc-sec 23 arc-sec
Orthogonality X-Y
Standard Precision SP 20 arc-sec 20 arc-sec 20 arc-sec 20 arc-sec 20 arc-sec 20 arc-sec
High Precision HP 5 arc-sec 5 arc-sec 5 arc-sec 5 arc-sec 5 arc-sec 5 arc-sec
Extra High Precision XHP 3 arc-sec 3 arc-sec 3 arc-sec 3 arc-sec 3 arc-sec 3 arc-sec
Travel Length (mm) 125-750
Drive System Brushless Linear Motor
Maximum Acceleration Payload Dependent
Maximum Speed Unladen 3 m/s
Maximum Peak Force 800 N
Maximum Continuous Force 160 N
Peak / Ave Current (RMS) 26 / 4.1 A
Recommended Maximum Load
L1 Parallel to Base 50 kg
L2 Tension Perpendicular to base 50 kg
L3 Compression Perpendicular to base 25 kg
Feedback Non-Contact Linear Encoder System
Sinusoidal Output 1 V (P-P) 20-micrometers/cycle 4096x interpolation
TTL resolution 5 μm, 1μm, 0.5μm, 0.25μm, 0.2μm, 100 nm & 50 nm
Repeatability 5x Resolution
Construction Aluminum Alloy Body, Hard Coat Anodize

Notes

  • All trajectory data based on axis uniformly supported over full length on precision mounting surface with vibration isolation
  • Payload capacities are recommended values to achieve maximum lifetime in worst-case scenario featuring maximum dynamic operation and off-center loading
  • Force, acceleration and speed performance are based on operations with NUTEC ELECTRONIC CONTROLS

About Us

NUTEC Mechatronic Systems' positioning is based on perfection. Engineering and design are focused on details and balanced design, flawless fabrication and precision machining to exacting standards and consistent quality.

Nutec Components
631-242-1225
[email protected]
81 Jefryn Blvd E, Deer Park, NY 11729

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