Shanghai Hengxiang Optical Electronic Co., Ltd. 86-21-54613487
S25 Axial Mini Solid Encoder 360 Resolution , Incremental Simple Rotary Encoder 600 Ppr For Robot

S25 Axial Mini Solid Encoder 360 Resolution , Incremental Simple Rotary Encoder 600 Ppr For Robot

  • High Light

    miniature optical encoder


    simple rotary encoder

  • Shaft Load
    Radiel: 10N; Axial:5N
  • Thickness
  • Insulation Strength
    AC500V 60s
  • Encoder Type
    Incremental Encoder
  • Resistance
  • Supply voltage
    DC5V; DC8-30V
  • Slew Speed
  • Shell Material
    Die Cast Aluminum
  • Place of Origin
    Shanghai, China
  • Brand Name
  • Certification
  • Model Number
    S25 simple 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

S25 Axial Mini Solid Encoder 360 Resolution , Incremental Simple Rotary Encoder 600 Ppr For Robot

S25 mini solid encoder axial length 14.5mm diameter 25mm 600ppr for robot


Our Service

  • Quick response once received customer’s quotation query
  • Professional engineer team, to solve your problems at any time
  • Strictly inspection before shipment
  • Various encoder models to be selected
  • Short lead time
  • High quality standard


Quick description of S25 rotary encoder

  • Power supply voltage 5V-30V
  • Pulse per turn: 36ppr to 2500ppr
  • Radial cable or Axial cable output
  • Sensing basic: photoelectric
  • Protection level grade IP50
  • Circuit output: NPN&PNP, voltage output, push-pull output, line driver output
  • Shaft length 14.5mm
  • Resolution(PPR):Min 36ppr, Max 2500ppr
  • Output Phase: ABZA-B-Z-


About Encoder Vibration

Vibration acting on an encoder always cause wrong pulse easily.

So we have to pay more attention to encoder working place.

The more pulse per round, the narrower groovy spacing of grating, ore effect to encoder by vibration, when motor speed is low or even stopped, vibration acting on encoder shaft or encoder shell would cause grating vibration, in this way, encoder might show wrong pulse signal.


Product Basis information

Items Basic parameters
External dimensions External diameter: 25mm
Thickness: 30mm
Solid shaft diameter: 4mm(D shape)
Encoder type Incremental encoder
Resolution 20;25;36;50;60;100;200;250;256;300;360;400;500;512
Output phase Phase A,B,Z,A-,B-,Z-
Supply voltage DC5V; DC8-30V
Outlet type Cable out from side
Cable out from back
Output mode NPN&PNP
Voltage output
Push-pull output
Difference output(TTL,HTL,RS422)
Environmental temperature Operating temperature: -20~+80° (Non icing)
Storage temperature: -25~+85° (Non icing)
Environmental humanity Operating and storage: 35~85%RH (non-condensing)
Protection grade IP50
Cable length 1M (cable length could be added appropriately by
require, but it need payment individually)
Consumption current 100mA Max
Allowable ripple ≤3%rms
Insulation strength AC500V 60s
Insulation resistance 10MΩ
Mark to Space ratio 45% to 55%
Top response Frequency 100kHz Max
Shell Material die cast aluminum
Bearing life 1.5x109 revs at rated load(100000hrs at 2500RPM)
Shaft Material Stainless steel



S25 Axial Mini Solid Encoder 360 Resolution , Incremental Simple Rotary Encoder 600 Ppr For Robot 0



An incremental rotary encoder outputs a certain amount of Pulses per Revolution. The higher this PPR number, the smaller the angle between each pulse. This PPR number is fixed for ordinary incremental encoders. Programmable incremental encoders can adjust this value to a desired number by a software change.

Today most incremental encoders have a Push-Pull (HTL) or RS422 (TTL) output driver, these have replaced most of the older output circuits like Open Collector NPN, Open Collector PNP, Voltage Output.

Push-Pull (HTL) circuits, also known as Totem Pole, provide a signal level which corresponds to the applied supply voltage. The supply voltage typically ranges from 8 to 30 VDC.

With proper connections you can use the Push Pull interface to replace true open collector circuits by using an external diode connected in a way to limit the direction of the current for RS422 (TTL) circuits provide a constant 5 V signal level that is not dependent on the supply voltage. Two supply voltage ranges can be selected: From 4.75 to 5.5 VDC (can be used to replace open collector output drivers) or from 8 to 30 VDC. Using differential signals the output fully complies to the RS422 standard.