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678-Series Sprockets

678 series engineer class sprocket is used for a wide verity of chain sizes. These sizes include X678, S678, and 678 size chains. These sprockets are typically supplied as cast material but we can also supply them as steel for longer operation. The below chart shows 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.

Tooth Face at Pitch Line: 1.187" - Roller Diameter: 2.00"
Sprocket Size Tooth Count Pitch Diameter Style Hub Diameter Length Thru Bore Maximum Bore Weight (LBS)
C678C3CR 3 12.06" C 6.00" 4.50" 3.00" 33.0
C678C4CR 4 15.72" C 6.00" 4.50" 3.00" 77.0
C678C5CR 5 19.52" C 7.00" 4.50" 3.50" 93.0
C678C6CR 6 23.34" C 8.00" 4.50" 4.00" 146.0
C678C7CR 7 27.03" C 8.50" 4.50" 4.00" 190.0
C678C8CR 8 30.83" C 8.50" 4.50" 4.00" 240.0

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Cast 678C3 Sprocket Cast 678C4 Sprocket Cast 678C5 Sprocket Cast 678C6 Sprocket
Cast 678C7 Sprocket Cast 678C8 Sprocket

Requesting 678-Series Sprockets

To get a quote on 678-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:

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