Rotary encoder selection elements: 1. The type 2. 3. The outside diameter size diameter of axle (for the other equipment coupling) 4. The resolution (digits, pulse number 5. Shaft form 6. 7. Working voltage output mode

8. Signal output distance 9. The output form 10. Customer equipment fastest speed 11. Subsequent equipment 12. The response frequency protection level

Rotary encoder used brand: close control NEMICON within Japan, Japan KOYO, Japan OMRON, tamagawa,, Switzerland, appropriate division, fort union, Switzerland, Italy's serie a, western Germany, German tour grams, Germany p + f pepperl + fuchs, South Korea autonics, etc., many foreign brands have set up factories in China.

Commonly used in tight control series: OVW2 series, HES series, series of NOC, along series, series of NE, NOC - H series, NOC - HP series and so on.

- 2 e series, koyo series: commonly used TRD TRD - 2 t series, TRD - 2 th series, TRD - GK series, TRD - J series, TRD - MA series, TRD - MX series and so on.

Omron series: commonly used E6A2 - C series, E6B2 - C series, E6C2 - C series and so on.

Commonly used series: winkle ZKP3808 series, ZKP4008 series, ZSP3806 series, ZSP5208 series, ZSP6210 series and so on.

The market situation of rotary encoder: application of encoder in OEM market proportion is higher, is mainly used in machine tools, elevators, form a complete set of servo motor, textile machinery, packaging machinery, printing machinery, lifting machinery and other industries.

From the industry, elevators, machine tool and form a complete set of servo motor is the key of the encoder application field, 53% of the overall application market share of the market. Textile machinery, packaging machinery and printing machinery fields such as the current market share is small, the encoder is generally not directly into the three industries, encoder manufacturers of competition is mainly concentrated in the machinery industry to provide the motor of the servo motor manufacturer. Hoisting machinery at present market share is small, only accounts for 4% to 5%. In metallurgical and electronic industries such as project type industry, encoder is applied ratio is low, only 14% market share. In addition, the encoder in medical machinery, wind power, auto production line, hybrid cars, water conservancy, rail transportation and other fields have some application, but the application rate is low.

From the manufacturer, at present the European and American brands to occupy the high-end market, accounting for more than one-third of the market share, product price positioning high-end, has advantages in the field of heavy industry, and wind power and other new energy; Japan and South Korea brand occupy the mid-market, mainly also accounted for more than a third of the market share, product price positioning in the end, in the elevator, machine tools, servo motor has been widely applied in industries such as; And mainland Chinese companies are mainly involved in the low-end market competition, product price is low, in accounting for almost half of sales market sales got only 25% of the mainland market.

Now the price of the absolute encoder is about four times bigger than the incremental encoder, 70% of the domestic market is the price of relative economic incremental encoder, mainly used in industries such as packaging, textile, elevator only demands speed and the absolute position measurement equipment is not high. In high precision mechanical equipment or steel, port and lifting heavy industry such as industry, due to the relatively high accuracy of measurement, more information will use absolute value encoder. In the applications of these heavy manufacturing industry, due to the working condition is bad, so the encoder high shock and vibration, etc.