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

S18 Miniature Rotary Encoder 1600 Resolution For Subminiature Motor

  • High Light

    S18 Miniature Rotary Encoder


    Miniature Rotary Encoder 1600 Resolution


    Subminiature Motor Rotary Encoder

  • Product Name
    S18 Miniature Rotary Encoder AB Phase NPN Output 1600 Resolution For Subminiature Motor
  • Thickness Of Encoder Body
  • Solid Shaft Diameter
    2.5mm, With D Shape
  • Shaft Length
  • Installation Diameter Size
  • Power Supply Voltage
    5V Or 8-30V
  • Place of Origin
  • Brand Name
  • Certification
  • Model Number
  • Minimum Order Quantity
  • Price
    Consult us
  • 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
    L/C, D/A, D/P, T/T, Western Union, MoneyGram
  • Supply Ability
    100K pieces per year

S18 Miniature Rotary Encoder 1600 Resolution For Subminiature Motor

S18 miniature rotary encoder AB phase NPN output 1600 resolution for subminiature motor


 Product Description



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




Product Name

S18 miniature rotary encoder AB phase NPN output 1600 resolution for subminiature motor​



Encoder Type Incremental encoder

External dimensions

External diameter: 18mm

Thickness: 18mm

Solid Shaft diameter: ⌀2.5mm



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


Protection grade


Consumption current

50mA Max

Rise/ Fall time

100nsec Max

Shaft Load

Radiel: 2N; Axial:2N


Amplitude 0.75mm,10-50Hz,1 hour for X/Y/Z direction individually


49/m/s2,three times for X,Y,Z direction individually

Shaft Material

304 stainless steel

Cable length


Certification CE


S18 Miniature Rotary Encoder 1600 Resolution 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.