D1 / D3 / D5  Attachment Roller Chain D1 / D3 / D5  Attachment Roller Chain
D1 / D3 / D5  Attachment Roller Chain D1 / D3 / D5  Attachment Roller Chain
D1 / D3 / D5  Attachment Roller Chain D1 / D3 / D5  Attachment Roller Chain

D1 / D3 / D5 Attachment Roller Chain

Extended pin attachment roller chain include D1/DD1, D3/DD3 and D5 types. Custom pin length and diameter are available.

Category: Roller Chain With Attachments

| About Extended Pin Attachment Roller Chain 

attachment extended pin

D1 and D3 are one end of pins extended. DD1 and DD3 are referred as extended pin on both sides.

D5 type is only available with double pith chains and has the bigger diameter at the extended side and assembled on the center of a link. 

D5 double pitch chain has three different rollers to choose from: standard roller, oversized roller, and engineered plastic oversized roller


Customized pin lengths, outer diameters and pin interval can be produced per your requirement.

Other special design or DD1 and DD3 demand, please contact us.


Tips for name of extended pin attachments: 

  • D1 is referred to one extended pin on a pin link; “DD1” is referred as  extended pin on both sides
  • D3 is referred two extended pins on a pin link; “DD3” is referred as  extended pin on both sides
  • D5 means the extended pin has bigger diameter on the center of a link


Our extended pin chains in carbon steel are consisted of solid bushings, solid rollers, and high-precision components that undergo heat treatment and shot peening.

For corrosive environment, we offer different corrosion resistant coatings.

Stainless steel extended pin chain is another choice if the chain is used on food equipment or applications requiring corrosion resistance and clean environment simultaneously. 

We also have patented high strength stainless steel chains: MEGA-II series chain with D1 and D3 attachments for higher tensile strength, allowable load and longer working life.

Our self-lube (NSL) extended pin chain is an ideal option for hard-to-reach places or difficulty in lubricating to save you maintenance time and cost.


| Features

  • D1/DD1, D3/DD3 and D5 extended pin attachments
  • Consisted of heat treated and shot peened components   
  • Solid bushing and roller for carbon steel chains
  • Stainless steel/Carbon steel with corrosion resistant coating available
  • Matched and tagged available
  • Custom-designed pins are available


Extended Pin Attachment Roller Chain Dimensions (PDF)

  • Please refer to above PDF file for sizes and dimensions.
  • D1 / D3 / D5 attachment interval (every pin link, every X pitch, etc.) can be customized per your applications.
  • For custom design and more information, please contact us.