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Double Flex Chain


Bar and pin chain more commonly known as double flex chain is designed for heavy-duty multi-directional applications that require a high-strength flex capable chain. Its simplistic "bar and pin" design makes it extremely economical for the general application type it's seen in and capabilities that this style of Engineer Class chain has to offer. We stock the widest selection of double flex chains included a non-metallic plastic double flex chain. We also supply standard and custom size double-flex sprockets.
Double Flex Chain Features
  • Induction Hardened Pin & Bearing Surfaces
  • Induction Hardened Sliding Surfaces
  • Effective Two Plane Rotating Operation
  • Manufactured With High-Strength Steel Alloy Material

Double Flex Chain Sizes


Chain Size
Center Bar Pitch
Side Bar Pitch
Min. Flex Radius
Tensile Strength (LBS)
Max. Allowable Load (LBS)
Overall Width (A)
Inside Link Width (W)
Sidebar Thickness (T)
Sidebar Height (H)
Pin Diameter (D)
Pin Length (L)
Weight (LBS/ FT)
DF3498 1.75" 2.50" 18.0" 50,000 4,000 1.45" 0.64" 0.31" 1.40" 0.63" 1.45" 3.90
DF3500 2.50" 3.00" 20.0" 48,000 4,000 1.50" 0.63" 0.25" 1.25" 0.57" 1.46" 3.30
DF3910 3.00" 3.00" 22.0" 48,000 4,000 1.50" 0.63" 0.25" 1.25" 0.57" 1.46" 3.30
Note: chain speed tables available on specific product pages.

Plastic DF3500 Chain:

Chain Size
Center Bar Pitch
Side Bar Pitch
Min. Flex Radius
Tensile Strength (LBS)
Max. Allowable Load (LBS)
Overall Width (A)
Inside Link Width (W)
Sidebar Thickness (T)
Sidebar Height (H)
Pin Diameter (D)
Pin Length (L)
Weight (LBS/ FT)
NM3500 2.50" 3.00" 20.0" 27,000 725 1.50" 0.63" 0.25" 1.25" 0.57" 1.46" 0.81
Note: chain speed tables available on specific product pages.

Double Flex Chain Sprockets

Please note that we also offer sprockets that are not on the below charts. Contact us for more information or to get a quote.

DF3498 Sprockets:

Sprocket Size
Pitch
Roller Diameter
Plate Thickness
Tooth Count
Stock Bore
Max. Recommended Bore
Pitch Diameter
Hub Diameter
Length Thru Bore
Style
Weight (LBS)
DF3498A7 1.750" 1.400" 0.575" 7 1.250" -- 9.557" -- -- A 12.0
DF3498A8 1.750" 1.400" 0.575" 8 1.250" -- 10.899" -- -- A 15.0
DF3498A9 1.750" 1.400" 0.575" 9 1.250" -- 12.243" -- -- A 19.0
DF3498A10 1.750" 1.400" 0.575" 10 1.250" -- 13.589" -- -- A 24.0
DF3498A11 1.750" 1.400" 0.575" 11 1.250" -- 14.936" -- -- A 29.0
DF3498C7 1.750" 1.400" 0.575" 7 1.250" 2.440" 9.557" 4.000" 2.750" C 19.0
DF3498C8 1.750" 1.400" 0.575" 8 1.250" 2.440" 10.899" 4.000" 2.750" C 22.0
DF3498C9 1.750" 1.400" 0.575" 9 1.250" 2.940" 12.243" 4.750" 3.130" C 31.0
DF3498C10 1.750" 1.400" 0.575" 10 1.250" 2.940" 13.589" 4.750" 3.130" C 35.0
DF3498C11 1.750" 1.400" 0.575" 11 1.250" 2.940" 14.936" 4.750" 3.130" C 40.0

DF3500 Sprockets:

Sprocket Size
Pitch
Roller Diameter
Plate Thickness
Tooth Count
Stock Bore
Max. Recommended Bore
Pitch Diameter
Hub Diameter
Length Thru Bore
Style
Weight (LBS)
DF3500A5 2.500" 1.250" 0.575" 5 1.250" -- 8.903" -- -- A 10.0
DF3500A6 2.500" 1.250" 0.575" 6 1.250" -- 10.628" -- -- A 14.0
DF3500A7 2.500" 1.250" 0.575" 7 1.250" -- 12.361" -- -- A 20.0
DF3500C5 2.500" 1.250" 0.575" 5 1.250" 2.940" 8.903" 4.500" 2.000" C 22.0
DF3500C6 2.500" 1.250" 0.575" 6 1.250" 2.940" 10.628" 4.500" 2.000" C 26.0
DF3500C7 2.500" 1.250" 0.575" 7 1.250" 2.940" 12.361" 5.500" 2.000" C 31.0

DF3910 Sprockets:

Sprocket Size
Pitch
Roller Diameter
Plate Thickness
Tooth Count
Stock Bore
Max. Recommended Bore
Pitch Diameter
Hub Diameter
Length Thru Bore
Style
Weight (LBS)
DF3910A5 3.000" 1.250" 0.575" 5 1.250" -- 9.708" -- -- A 12.0
DF3910A6 3.000" 1.250" 0.575" 6 1.250" -- 11.591" -- -- A 17.0
DF3910A7 3.000" 1.250" 0.575" 7 1.250" -- 13.482" -- -- A 23.0
DF3910C5 3.000" 1.250" 0.575" 5 1.250" 2.940" 9.708" 4.750" 3.130" C 24.0
DF3910C6 3.000" 1.250" 0.575" 6 1.250" 2.940" 11.591" 4.750" 3.130" C 29.0
DF3910C7 3.000" 1.250" 0.575" 7 1.250" 2.940" 13.482" 4.750" 3.130" C 35.0


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DF3498 Chain Double Flex DF3498 Chain DF3498 Chain - Double Flex Chain
Get a Quote
Call to Order 407-347-3519
DF3500 Chain Double Flex DF3500 Chain DF3500 Double-Flex Bar and Pin Chain
Get a Quote
Call to Order 407-347-3519
DF3910 Chain Double Flex DF3910 Chain DF3910 Chain - Double Flex Chain
Get a Quote
Call to Order 407-347-3519
Plastic 3500 Chain NM3500 Chain | Plastic 3500 Chain
Get a Quote
Call to Order 407-347-3519
   
 
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