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124-Series Sprockets

124-Series Sprockets

124 series engineer class sprocket are used for a wide verity of chain sizes. These sizes include H124, W124, WS124, WR124, and WH124. These sprockets are typically supplied as cast material but we can also supply them as steel for longer operation. The below chart show the standard tooth counts as well as dimensions for each size. To get a quote on the sprocket or chain please contact us or fill out the below request form and we will be happy to assist you.

Steel 124-Series Sprockets


Note: Plate Thickness: 1.5"/ Roller Diameter: 1.5"
Sprocket Size Tooth Count Style Pitch Diameter Stock Bore Maximum Bore Hub Diameter Length Thru Bore Weight (LBS)
124C6 6 C 8.00" 0.938" 3.25" 4.75" 4.625" 36.0
124C7 7 C 9.22" 1.0" 3.938" 5.75" 4.75" 52.0
124C8 8 C 10.45" 1.0" 3.938" 5.75" 4.75" 61.0
124C9 9 C 11.70" 1.0" 3.938" 5.75" 4.75" 70.0
124C10 10 C 12.94" 1.0" 3.938" 5.75" 4.75" 79.0
124C11 11 C 14.20" 1.5" 4.25" 6.25" 4.75" 95.0
124C12 12 C 15.45" 1.5" 4.25" 6.25" 4.75" 107.0
124C13 13 C 16.72" 1.5" 4.25" 6.25" 4.75" 120.0
124C14 14 C 17.98" 1.5" 4.25" 6.25" 4.75" 135.0
124C15 15 C 19.24" 1.5" 4.375" 6.75" 6.0" 168.0
124C16 16 C 20.50" 1.5" 4.375" 6.75" 6.0" 185.0
124A6 6 A 8.00" 0.938" - - - 21.0
124A7 7 A 9.22" 1.0" - - - 28.0
124A8 8 A 10.45" 1.0" - - - 37.0
124A9 9 A 11.70" 1.0" - - - 46.0
124A10 10 A 12.94" 1.0" - - - 55.0
124A11 11 A 14.20" 1.5" - - - 68.0
124A12 12 A 15.45" 1.5" - - - 80.0
124A13 13 A 16.72" 1.5" - - - 93.0
124A14 14 A 17.98" 1.5" - - - 108.0
124A15 15 A 19.24" 1.5" - - - 124.0
124A16 16 A 20.50" 1.5" - - - 141.0



Requesting 124-Series Sprockets

To get a quote on 124-Series Sprocket simply fill out the request for quote from and someone from our customer service team will contact you. Please note that if you don't see the sprocket size you need above send us an email or give us a call.


Company Name:
Contact Name:
Email Address:
Phone Number:
Sprocket Size:
Chain Size:
Tooth Count:
Hub Type (A-plate, B-Hub, C-Hub, other):
Length Thru Bore:
Bore Size/ Type (plain, finished w/ key-way & set screws, or other):
Preferred Material (steel, cast, or other):
Quantity Needed:

Additional Information or Notes:


Please enter the following code into the box provided:
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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.