Shanghai Hengxiang Optical Electronic Co., Ltd. 86-21-54613487
1600 Resolution S18 Miniature Rotary Encoder AB Phase NPN Output For Subminiature Motor

1600 Resolution S18 Miniature Rotary Encoder AB Phase NPN Output For Subminiature Motor

  • High Light

    miniature optical encoder


    simple rotary encoder

  • External diameter
  • Thickness
  • Solid Shaft Diameter
  • Output phase
    Phase A,B,Z
  • Supply voltage
    DC5V ; DC8-30V
  • Shaft Material
    304 Stainless Steel
  • Output mode
    Collector Open Circuit Output(NPN &PNP)
  • Net weight 
    About 20g (with Package)
  • Place of Origin
    Shanghai ,China
  • Brand Name
  • Certification
  • Model Number
    S18 mini rotary encoder
  • Minimum Order Quantity
    1pcs encoder to start order
  • Price
  • Packaging Details
    each 1 piece was packed into single carton box
  • Delivery Time
    3-5 working days for sample order, 7-15 working days for mass order
  • Payment Terms
    D/A, D/P, T/T, Western Union, Credit Card, Master Card,Paypal, etc
  • Supply Ability
    100K pieces per year

1600 Resolution S18 Miniature Rotary Encoder AB Phase NPN Output For Subminiature Motor

S18 miniature rotary encoder AB phase NPN output 1600 resolution mini size shaft 2.5mm for subminiature motor


Product Basis information of S18 mini encoder

Thickness of encoder body 18mm

Solid shaft diameter 2.5mm, with D shape

Shaft length 7mm

Installation diameter size12mm

Power supply voltage 5V or 8-30V

Circuit output Signal: NPN&PNP

Sensing basic : photoelectric

Pulse per turn: 250ppr-1600ppr

Max motor speed 5000rpm

Protection level grade IP50

Ribbon cable outlet


Detail Specifications

External dimensions External diameter: 18mm
Thickness: 18mm
Solid Shaft diameter: ⌀2.5mm
Resolution 36;50;60;100;200;250;256;360;400;500;512;720;800;1000;1024;1440;1600
Output phase Phase A,B,Z
Supply voltage DC5V ; DC8-30V
Outlet type Cable out from side
Cable out from back
Output mode Collector open circuit output(NPN &PNP)
Environmental temperature Operating temperature: -20~+80° (Non icing)
  Storage temperature: -25~+85° (Non icing)
Environmental humanity Operating and storage: 35~85%RH (non-condensing)
Top response Frequency 100kHz Max
Top Rev 5000rpm
Protection grade IP50
Consumption current 50mA Max
Rise/ Fall time 100nsec Max
Shaft Load Radiel: 2N; Axial:2N
Vibration(endure) Amplitude 0.75mm,10-50Hz,1 hour for X/Y/Z direction individually
Shock(endure) 49/m/s2,three times for X,Y,Z direction individually
Shaft Material 304 stainless steel
Cable length 150mm


1600 Resolution S18 Miniature Rotary Encoder AB Phase NPN Output For Subminiature Motor 0


Principle of encoder

Mechanical degree is the actual rotation of the shaft in degrees. Electrical degree is used for electrical signals. The required time for completing one alternating voltage/current cycle is defined as 360 electrical degrees (el°). For incremental encoders, one cycle is equal to one complete pulse. With a given PPR the electrical degree can be converted to mechanical degree for any incremental encoder.


Every 90 el° the incremental encoder outputs a rising or falling edge on the “A” or “B” output that can be interpreted as a count. If an encoder outputs 1000 PPR, a counter can interpret 4000 counts (4 counts each pulse).



Each single encoder is packed into a single safe carton with protecting bubble.

Then all encoders will be put into a bigger carton to prepare shipment.


About Our Factory

  • Own brand of "HENGXIANG" encoder
  • Has ISO9001:2000 Quality Management System Certificate and CE Certification
  • Invention patents five and utility model patents five
  • Passed Shanghai New and High-tech Achievements Transformation Project.
  • Our target: Meeting Client's Requirement,Creating Social value,serving clients attentively and Achieving win-win.
  • Located in Shanghai city
  • 20-30 experienced workers


Question about encoders or our factory before ordering

Q: Where is your factory?

A: Our factory is located on Shanghai City.

Q: Can I pay a visit to your factory?

A: Yes, you we welcome to visit our factory at any time if convenient.

Q: How long is your delivery time?

A: Usually 3 working days for sample, 7-15 days for mass production,

The production date is according to order quantity.

Q: What is the highest resolution of your encoder products?

A: The highest resolution is 80000ppr, you can email us for more information.

Q: Can your encoder be customized?

A: Yes, our encoder can be customized according to your requirements,

Q: Do you test your encoder product before shipment?

A: Yes, we 100% test and examine every piece before shipping to make sure it work well on your device.