The Shimano Nexus 3 SG-3R40 is a reliable 3-speed hub gear, often used on city bikes, cargo bikes, and recreational bikes. This hub is known for its smooth shifting, solid construction, and ease of maintenance.

 Key Features

 
 Number of gears: 3 internal gears (in the hub itself)
 
 Brake system: Roller brake compatible (suitable for Shimano roller brakes)
 
 Flange diameter: 84mm
 
 Number of spoke holes: 36
 
 Axle length: 176mm (fixed axle, thread)
 
 Installation width: 127mm or 123mm (depending on version)
 
 Material: Aluminum hub housing, color silver or gray-black
 
 Weight: approx. 885g


 Technical specifications

 

  

   
 Specification
   
 Value
  
  

   
 Gears
   
 3
  
  

   
 Brake type
   
 Roller brake
  
  

   
 Number of spoke holes
   
 36
  
  

   
 Axle length
   
 176mm
  
  

   
 Installation dimensions
   
 127mm or 123mm
  
  

   
 Silent Clutch
   
 Yes
  
  

   
 Weight
   
 approx. 885g
  
  

   
 Flange diameter
   
 84mm
  
  

   
 Material
   
 Aluminum
  
  

   
 Colour
   
 Silver/gray-black
  
 


 Features & Benefits

 
 Smooth and reliable shifting : Even under load, thanks to the integrated shift-assist mechanism.
 
 Silent Clutch : Shifting without rattling noises.
 
 Rollerbrake compatible : Provides reliable and powerful braking performance without the need for rim or brake pad maintenance.
 
 Durable and low-maintenance : Closed system for protection against dirt and weather influences.
 
 Suitable for urban use : Sufficient gears for flat to slightly undulating surfaces, ideal for everyday use.


 Suitable for

 
 City bikes, transport bikes, granny bikes and touring bikes with a 36-hole rear hub and roller brake system.


 The Shimano Nexus 3 SG-3R40 offers trouble-free riding pleasure thanks to reliable performance, easy operation and low maintenance – a true classic for everyday cycling!