Rotary encoders and ring scales

Short Description:

The Pi20 series rotary encoders is a one-piece stainless steel ring grating with 20 µm pitch incremental graduations engraved on the cylinder and an optical reference mark. It is available in three sizes, 75mm, 100mm and 300mm in diameter. The rotary encoders have excellent mounting accuracy and feature a tapered mounting system that reduces the need for high-tolerance machined parts and eliminates center misalignment. It has the characteristics of large inner diameter and flexible installation. It uses a non-contact form of reading, eliminating backlash, torsional errors and other mechanical hysteresis errors inherent in traditional enclosed gratings. It fits the RX2 open optical encoders.

Outer diameter of the ring: 75mm/100mm/300mm

Accuracy: 15 arc second

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Product Detail

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The Pi20 series is a one-piece stainless steel ring grating with 20 µm pitch incremental graduations engraved on the cylinder and an optical reference mark. It is available in three sizes, 75mm, 100mm and 300mm in diameter. The rotary encoders have excellent mounting accuracy and feature a tapered mounting system that reduces the need for high-tolerance machined parts and eliminates center misalignment. It has the characteristics of large inner diameter and flexible installation. It uses a non-contact form of reading, eliminating backlash, torsional errors and other mechanical hysteresis errors inherent in traditional enclosed gratings.

It fits the RX2 readhead.

Model	Outer diameter of the ring	Number of lines	D1 （mm）	D2 （mm）	D3 （mm）	N	θ	Readhead
Pi20D075	75	11840	55.02±0.02	65	75.35±0.05	6	30°	RX2
Pi20D100	100	15744	80.02±0.02	90	100.25±0.05	6	30°
Pi20D300	300	47200	280.03±0.03	290	300.3±0.1	16	11.25°