S25 solid shaft 4mm mini shaft rotary position encoder with keyway

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US $20-60 / Pieces | 1 Piece/Pieces S25 solid shaft 4mm mini shaft rotary position encoder (Min. Order)
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Quick Details
Place of Origin:
Shanghai, China (Mainland)
Brand Name:
Model Number:
S25 solid shaft 4mm mini shaft rotary position encoder with keyway
Position Sensor
Optical Sensor
square-wave signa
Item Name:
S25 solid shaft 4mm mini shaft rotary position encoder with keyway
External dameter:
Hollow shaft diameter:
up to 2500PPR
Protection grade:
Supply voltage:
DC5V & DC8-30V
Output mode:
NPN & voltage output & push-pull output & difference output
Outlet type:
wire out from side/back
Wire length:
80g per piece
Supply Ability
Supply Ability:
100000 Piece/Pieces per Month S25 solid shaft 4mm mini shaft rotary position encoder
Packaging & Delivery
Packaging Details
Carton box for S25 solid shaft 4mm mini shaft rotary position encoder with keyway
Product Description


S25 solid shaft 4mm mini shaft rotary position encoder with keyway





1) Advantages

 1, Factory characteristic

------Customer Repurchase rate ≥ 85%

------Over 25 years experience engineer team in research and development

------ CE & ISO9001 & SGS Certification


2, Encoder characteristic

   --- Mini diameter of 25mm

   --- Solid shaft diameter of 4mm

   --- Resolution max to 2500ppr.

   --- Power supply voltage 5-30V

   --- With Keyway

3, Application: textile industry, packing machinery, production line, etc., for automation control.




2) S25- Series Encoder Specification 


External dimensionsExternal diameter: 25mm
Thickness: 30mm
Shaft diameter: 4mm



Output phasePhase A,B,Z,A-,B-,Z-
Supply voltageDC5V & DC8-30V
Outlet typeCable out from side
Cable out from back
Output ModeCollector open circuit output(NPN &PNP)
Voltage output 
Push-pull output 
Line Driver (26LS31)
Line Driver Compatible RS422
Line Driver(RT7272)
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 gradeIP50
Cable length1000mm (cable length could be added ) 
Shell Aluminium
PackageCarton box
Net weight About  80g (with package)
Certification CE



 3) Pictures





4)Machine Dimension




Our Factory


company introduction


    Shanghai Hengxiang Optical Electronics Co.,Ltd, located on Shanghai, an international city of China, set up in 2001, is a professional manufacturing high-tech corporation, providesresearch and manufacturing ,entity integrating optical,mechanical and electronic design. Now we have finished primary pipelining of encoder manufacture.


    "HengXiang" brand encoder, has ISO9001:2000 Quality Management System Certificate and CE Certification, moreover, we have own invention patents five and utility model patents five, also passed Shanghai New and High-tech AchievementsTransformation Project.


      Our target: Meeting Client's Requirement,Creating Social value,serving clients attentively and Achieving win-win.


      Sincerely welcome all customers to visit our company, to review and custom "HengXiang" brand products .

FAQ before ordering

1) How to select an encoder

Before ordering encoders, you could clearly know which type of encoder you may need.

There are incremental encoder and absoltue encoder, after this, our sale-service department would better work for you.


2) What specifications are requeted before order an encoder?

Encoder type----------------solid shaft or hollow shaft encoder

External Diameter----------Min 12mm, MAX 100mm

Shaft Diameter---------------Min shaft 2.5mm, Max shaft 45mm

Phase & Resolution---------Min 20ppr, MAX 48000ppr

Circuit Output Mode-------you could choose NPN,PNP,Voltage, Push-pull,Line driver, etc

Power Supply Voltage------DC5V-30V


3) How to choose a right encoder by yourself ?

Exact Specification Describtion

Check The Installation Dimensions

Contact Supplier to get more details


4) How many pieces to start ?

1PCS only


5) Why choose "Hengxiang" Brand Encoder


All encoders are designed and developed by our own engineer team since year2008,

and most of the electronic component of encoders are imported from overseas market.

Never let our quality down,because quality is our culture.


6) How long is your lead time?


Short lead time----3 days for samples,7-10days for mass production


7) what is your guarantee policy?

1year warranty  and  life-long technical support 



8) Your Company Official Website?


You For More information,please freely visit our official website:http://www.shhxgd.com


9) Where to download encoder datasheet or catalogue?


You could visit our website at http://www.shhxgd.com or contact online sale service to get the latest catalogue files.





Business Assurance

Dear Customer, thanks so much for visiting our website,  we are so happy to inform you that Alibaba can protect every transaction from payment to delivery between us.

Because our factory started as a golden member on Alibaba since Year 2008, till now, we enjoy the trade assurance limit of USD$53,000.