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40B20 Roller Chain Sprockets

ANSI 40B20 Sprockets are designed with 20 teeth and utilize 40 roller chain. Being manufactured in accordance with ANSI B29.1 standards these sprockets directly interchange with other brands. These 40B20 sprockets have hardened teeth, so they also go by 40B20H sprockets, hardened teeth increase performance, durability, and overall working life.

40B20H Sprocket Sizes

Additional custom and metric bore sizes available from our in-house machine shop!

40B20 Sprocket Specifications


  • Sprocket Size: 40B20
  • Outside Diameter: 3.460"
  • Hub Type: B
  • Hub Diameter: 2-5/8"
  • Length Through Bore: 1"
  • Weight: 1.56 LBS
  • Common Interchanges: 40BS20H, H40BS20, 40BS20-FB

Frequently Asked Questions

  • If your order is less than $300, no problem! Please give us a call at 407-347-3519 or email Sales@usarollerchain.com, and we will be happy to assist you!

  • USA Roller Chain utilizes an extensive network of vendors and warehouses to ensure you get your items quickly! Our primary roller chain warehouse is located in Clermont, FL, but we have warehouses located all across the United States. Your order will be shipped from the closest warehouse to you that has your requested product in stock. This speeds up transit times and saves you money on shipping! If you have any questions about where an item will ship from, please CONTACT US

  • In-stock items are typically shipped out in 1-3 business days.Made-to-order item lead times vary from 1-2 days up to 14-20+ weeks, depending on the product. If you need your items urgently, please let us know, and we will do our best to meet your required delivery date! If you have any questions, please CONTACT US

  • If you are having an issue with your order, please CONTACT US as soon as possible so we can resolve it for you.

    Most in-stock items can be returned within 30 days of the shipment date. MTO or Custom orders are not eligible for a return or refund. For a detailed explanation of our return policies, please click here.

  • Absolutely! We may be called "USA Roller Chain", but we ship worldwide! Please CONTACT US for Export/International quotes or orders.