± 10, ± 5, ± 3 µm/m arc length
accuracy grades

The WMRA-1010 stainless steel measuring ring consists of 3 individual rings including a solid carrier ring, a precision graduation ring with 1000um pitch and a cover ring. It is to be stretched onto a properly sized mounting surface by the installer. The mounting surface is typically steel with a CTE ~12 ppm/DegC but can be other materials with operation limited to a narrow temperature range. These measuring rings are only 0.65mm thick and are available in a variety of both binary and non-binary sizes and there is no limit to the maximum diameter.

± 10, ± 5, ± 3 µm/m arc length
accuracy grades

The WMFA-1010 Measuring flange is a stainless steel disk with a measuring ring installed by AMO. The dimensions of standard flanges are detailed within the catalog. The precision ID of these is easily adapted to alternate shaft sizes. Custom flanges, manufactured to the purchaser’s drawing, can be furnished when standard flanges will not work.

IP-67 Rated

The WMKA-2010x  is an open, non-contact scanning heads with integrated signal conditioning electronics. It can be combined with the WMFA-1010 Measuring Flange or the WMRA-1010 stainless steel measuring ring. Direct output of Drive CLiQ, EnDat 2.2, Fanuc, Biss C, Mitsubishi or SSI serial communications.

± 10, ± 5, ± 3 µm/m arc length
accuracy grades

The WMRA-1110 stainless steel measuring ring consists of 2 individual rings including a solid carrier ring and a precision graduation ring. It is to be snapped into a properly sized mounting groove by the installer. The mounting groove is typically steel with a CTE ~12 ppm/DegC but can be other materials with operation limited to a narrow temperature range. These measuring rings are only 0.60 mm thick and are available in a variety of both binary and non-binary sizes.

IP-67 Rated

The WMKA-2110x is an open, non-contact scanning head with integrated signal conditioning electronics for inside reading. It can be combined with the WMRA-1110 stainless steel measuring ring. Direct output of Drive CLiQ, EnDat 2.2, Fanuc, Biss C, Mitsubishi or SSI serial communications.

Absolute Encoder Catalog

To view the product catalog, please click on the link below or right click and save the file for future reference:

Absolute Encoder Catalog

The AMOSIN® absolute angle measuring systems consist of a stainless steel inductive Grating Ring and a matching non-contact electronic reader head. The grating ring size corresponds with the number of whole pitches contained within its circumference. The smallest diameter is approximately 80mm. They are available in a variety of both binary and non-binary sizes and there is no limit to the maximum diameter. The thin stainless steel ring is ideal for encoding large diameters because it adds little to the mechanical inertia and aids in maximizing the useable bore space. With an IP-67 rating and tolerance to many industrial contaminants (grease, oil, coolant, dust and dirt for example) these mechanical advantages can be employed in both clean and polluted environments.

The AMOSIN® absolute angle measuring systems deliver high-performance position feedback that is suitable for closed loop motion control either as the primary encoder (direct drive torque motor) or as the secondary encoder. They are of value in general for drives where high dynamic range and stiffness is required.

The environmental attributes of the AMOSIN design are similar to that of magnetic encoders but these are not magnetic. Neither the grating ring nor the reading head are harmed by direct contact AMOSIN design are similar to that of magnetic encoders but these are not magnetic. Neither the grating ring nor the reading head are harmed by direct contact to a magnet. Unlike magnetic encoders they exhibit no hysteresis (backlash) of motion and can operate in close proximity to direct drive motors.

The Grating Scales  can be applied directly to the mounting surface with a dual sided adhesive tape or integrated into a screwed stainless steel spar systemwith a snap cover that locks the scale tape into the spar without any adhesives. Linear scales are available to any measuring length, with a variety of grating pitches and in different accuracy classes. They are manufactured using a photolithographically patterned and precision etched stainless steel material that results in high accuracy and high linearity. Single Reference Index marks, multiple Reference Index marks or distance coded Reference Index marks are available.

The Read Head, when in close proximity to the matching grating scale, develops high-quality sine and cosine waves with little harmonic distortion and ZERO hysteresis. As a 1VPP sine/cosine output signal to the control, the signal period can be 1:1 to the pitch count or through signal subdividing it can be 25:1 or 50:1. This capability makes possible higher control resolution when the input signal subdividing level is limited. The reading head can also deliver +5V TTL RS422 square wave signals with high resolution to the control.

All encoder heads have a high degree of immunity to contamination due to their IP-67 rating and inductive sensor technology. Grease, oil, coolant, dust and dirt have no deleterious effect on the read head function.

Typical absolute angle measuring system applications include:

Direct drive torque motors
Rotary tables
C-axis and 4th/5th axes on machine tools
Printing machines
Sheet metal cutting, punching and stamping machines
Medical equipment – Large format scanning and therapy machines
Radar antennas