Shanghai Hengxiang Optical Electronic Co., Ltd. 86-21-54613487
OC Output Hollow Shaft Incremental Encoders , Mini Rotary Encoder External Diameter 18mm

OC Output Hollow Shaft Incremental Encoders , Mini Rotary Encoder External Diameter 18mm

  • High Light

    incremental type encoder


    hollow shaft rotary encoder

  • Encoder Type
    Universal Rotary Encoder
  • External diameter
  • Hollow Shaft Diameter
  • Resolution
    250ppr - 1600ppr
  • Environmental humanity 
    35~85%RH (non-condensing)
  • Output phase
    Phase A,B,Z
  • Shaft Load
    Radial 2N; Axial 2N
  • Net weight 
    About 20g (with Package)
  • Place of Origin
  • Brand Name
  • Certification
  • Model Number
    K18 quadrature 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

OC Output Hollow Shaft Incremental Encoders , Mini Rotary Encoder External Diameter 18mm


Mini size rotary encoder K18 blind hole encoder external diameter 18mm shaft 2.5mm OC output


Why choose us?

HENGXIANG brand--The trustworthy partner
CE approved--advantaged product quality;
Fast delivery--strong stock product ability;

Factory directly provide a competitive price;
One-stop service--for your efficient purchasing experience;

OEM design accepted--customized design, your own brand accepted.


K18 encoder Specification

Items Basic parameters
Encoder type Incremental encoder
External diameter 18mm
Thickness 15.3mm
Installation dimension R11mm, spring plate 18T22
Hollow shaft diameter 2.5mm
Resolution 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)
Protection grade IP50
Cable length 1M (cable length could be added appropriately by
require, but it need payment individually)
Consumption current 50mA MAX
Top response frequency 100KHZ
Rise/ Fall time 100nsec Max
starting torque less than 5x 10-4 N.m
Intertia moment less than 0.3x 10-6kg.m2
Shaft load Radial 2N; Axial 2N
Top REV 3000r rpm


Production date

3-5 working days for sample after full paid

7-15 days for mass production after full paid



  • Goods can shipped via TNT, FedEx, UPS, DHL, EMS, etc.
  • You could select the express according to your requirements if freight collector
  • If you do not have any courier account, we will check and find a cheapest and safety express for you.
  • Our factory has 30% discount with most courier company, so price could be as cheap as possible.


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.


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

OC Output Hollow Shaft Incremental Encoders , Mini Rotary Encoder External Diameter 18mm 0

Production Catalogue

If you have already selected the encoder model you are going to order, please email us directly or contact online service right now to get the latest catalogue.

But if you are still have any doubts on choosing a right encoder model number, you are also free to contact us to get the related catalogue.


Part number for K18 series encoder






K18-J3 NH720

K18-L3 NH1000