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Renishaw offers a comprehensive range of advanced encoders used by OEMs around the world for
exact positioning, highest reliability, and superior performance-to-cost value. Three different encoder
technologies—optical, magnetic and laser interferometer —provide machine designers with proven solutions
to difficult applications. All are engineered to deliver non-contact, friction-free operation, exceptional ease of
installation, space savings, and application flexibility.
OPTICAL ENCODERS
Renishaw optical linear and rotary encoders bring high precision, speed and reliability to thousands of tough
industrial applications. Robust metal scales avoid the fragility of glass scale encoders, while unique noncontact
readheads eliminate the bulk, hysteresis and wear with traditional encoders.
Linear encoders use flexible, self adhesive, cut-to-length metal scales, a Renishaw innovation, while patented
optics filter out effects from scratches, dust, or dirt. Rotary encoders feature a steel ring with engraved
scale that direct mounts on shafts, eliminating coupling losses, oscillation,
and hysteresis errors. A broad range of optical encoders lets designers tailor
accuracy and sub-divisional error (SDE) to application needs.
A new, Resolute™, true absolute, fine pitch optical encoder system that has
excellent dirt immunity and an impressive specification breaks new ground in
encoder feedback. It is the world’s first absolute encoder capable of 27-bit resolution
at 36000 rev/min. It has an astonishing market-leading resolution of just
1 nanometer at up to 100 m/s for both linear and angle encoding applications.
MAGNETIC ENCODERS
RLS rotary and linear magnetic encoders— produced in Slovenia by RLS d.o.o., a Renishaw affiliate — are ideal
for dirty, wet and extreme temperature environments. IP68 is a “norm” for this range of encoders. Low cost,
compact size and design simplicity have won use in a wide range of industries. Non-contact solid-state design—
essentially a chip and magnet —eliminates seals, bearings and moving parts for lifetime reliability.
Rotary encoders beat glass disk encoders in affordability, reliability, thermal range, shock and vibration resistance,
dirt immunity, compactness, and speed. They provide class-leading performance, including industry’s
first 13-bit capability. Available in component,modular and packaged shaft-style models, rotary encoders offer
up to 8,192-count resolution, accuracy to 0.4°, speeds over 50,000 rpm, and extreme thermal range from -40°C
to 125°C. LM10 linear magnetic encoders continue Renishaw cut-and-stick application simplicity with a selfadhesive,
magnetic metal scale. The encoders offer “down to”, 1 µm resolution at 8 m/sec. travel, - 20°C to 85°C
operation, and 100-meter range.
LASER INTERFEROMETER ENCODERS
Laser interferometers are the ultimate position feedback technology, providing nanometer and picometer
positioning for advanced semi-conductor and electronics manufacturing, and nanotechnology materials
development. Renishaw’s RLE20 fiber-optic laser encoder system converts the laser interferometer from a
complex scientific instrument to a simple production solution. Fiber- optics beam delivery eliminates the need
for multiple remote beam splitters, benders and mounts. Only two components to align greatly saves
installation time. The RLE20 can send the laser beam to two axes from one laser source, ideal for high-precision
X-Y stages, in vacuum or out.
The RLE20 system provides laser frequency stability of ±2 ppb, sub-nanometer non-linearity and resolution
capability of 38 picometers at velocities to 1m/sec. The capabilities meet tightening requirements for wafer
inspection and lithography, while overcoming velocity and bandwidth limitations. |
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Renishaw is a global company with core skills in
measurement, motion control,spectroscopy and precision
machining. We develop innovative products that significantly
advance our customers’ operational performance
- from improving manufacturing efficiencies and raising
product quality, to maximizing research capabilities
and improving the efficacy of medical procedures.
Our products are used for applications as diverse as
machine tool automation, co-ordinate measurement,
Raman spectroscopy, machine calibration, position
feedback, CAD/CAM dentistry, stereotactic neurosurgery,
and molecular diagnostics. In all these areas we aim to
be a long-term partner, offering superior products that
meet our customers’ needs both today and into the future,
backed up by responsive and expert technical and
commercial support.
Renishaw Inc.
5277 Trillium Boulevard
Hoffman Estates, IL 60192
USA
Tel. (847) 286-9953
Fax. (847) 286-9974
E-mail. usa@renishaw.com
www.renishaw.com
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