ANSI 50-3 Roller Chain | McMaster-Carr

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Strand Type

Roller Chain Trade Number

System of Measurement

Pitch

Chain Style

Length

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3,000 lb. to 9,999 lb.

Component

Chain

Link

Link Type

Adding

Adding and Connecting

Connecting

Export Control Classification Number (ECCN)

Material

Chain Pitch Type

Roller Diameter

Number of Teeth

Roller Width

3/8"

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

RoHS

DFARS Specialty Metals

Roller Chain Type

Shaft Diameter

Chain Standard

Height

Overall Width

Width

Hub Diameter

9 Products

Roller Chain and Links


Chain	Connecting Links

Adding Links	Adding-and-Connecting Links

Image of Attribute. Front orientation. Contains Annotated.

Pair this chain with sprockets to transmit power between rotating shafts. Like the chain on a bike, the side plates have a figure-eight shape that grips the sprockets without slipping.

Lubrication is key to smooth operation and long chain life. Routinely apply oil by hand or install an oil dispenser for continuous lubrication.

Steel—The go-to for roller chain, steel is strong and economical. While proper lubrication helps prevent rusting, it’s not as corrosion resistant as coated or stainless steel.

Connecting Link—Use a single link to join both ends of your chain. Start by removing the spring clip or cotter pin from the link’s side plate. Then, slide the link pins into the mating rollers at each end of your chain and snap the clip back on. Also known as master links.

Adding Link—Attach with a connecting link to extend the length of your chain. Each link adds a length equal to the chain’s pitch. Also known as roller links.

Adding-and-Connecting Link—An all-in-one link for adding and connecting. It adds a half-pitch length at the roller end, allowing finer length adjustments than full-pitch links. The pin end connects to your chain—except for trade number 25, which requires a separate connecting link. Remove the side plate to install. Also known as half links and offset links.

							Chain		Connecting Links		Adding Links		Adding-and-Connecting Links
	Roller Chain
	Trade No.	Std.	Pitch	Roller Dia.	Roller Wd.	Working Load, lb.		Per Ft.		Each		Each		Each
Triple Strand







				Steel

				50-3	ANSI	5/8"	0.400"	3/8"	3,500	6261K76	000000	6261K722	00000	6261K594	00000	6261K723	00000

Floating Roller Chain Tensioners

Mount these tensioners directly onto your chain drive. They have adjustable straps that take up slack and apply constant tension. Because they engage with the side plates instead of the rollers, they increase the life of your roller chain.

UHMW Polyethylene—UHMW polyethylene tensioners are stronger and more durable than PTFE tensioners.

Titanium—Titanium tensioners stand up to harsh and dirty environments. They're stronger and more durable than plastic tensioners. And with a low coefficient of friction, they work with chain that has little or no lubrication.

			Overall
	For Roller Chain Trade No.	For Strand Type	Ht.	Wd.	Dp.	Housing Material	Strap Material	Max. Temp., ° F		Each
For ANSI Chain







				UHMW Polyethylene

				120, 80-2, 50-3, 40-4	Single, Double, Triple, Quadruple	16"	5 1/2"	4 13/16"	304 Stainless Steel	HDPE	180	5973K8	0000000




						Titanium

						120, 80-2, 50-3, 40-4	Single, Double, Triple, Quadruple	16"	5 1/2"	4 13/16"	304 Stainless Steel	HDPE	180	5973K232	000000

Sprockets

For Triple Strand

Sprocket teeth mesh with your roller chain to smoothly transmit power. These U.S.-made sprockets have machined teeth for a more precise fit than flame-cut or punched teeth, allowing them to glide in and out of the chain to reduce wear and extend chain life.

Wear-Resistant Steel with Hardened Teeth—These sprockets have teeth that are hardened from the tip to the base so they withstand chain contact and wear evenly. That means fewer broken teeth and a longer lifespan than sprockets with unhardened or tip-hardened teeth. Steel is best for dry environments since moisture will cause it to rust.

Plain Bore—Plain bore sprockets give you options—machine a custom bore, weld, or press-fit them in place. They're sized to the minimum shaft diameter listed and are machinable up to the maximum.

	For Roller Chain
	Trade No.	Std.	Pitch	No. of Teeth	OD	Bore Type	For Shaft Dia.		Each
For Triple Strand







				Wear-Resistant Steel with Hardened Teeth

				50-3	ANSI	5/8"	11	2 1/2"	Plain	5/8" to 15/16"	2510K42	0000000


				50-3	ANSI	5/8"	15	3 5/16"	Plain	3/4" to 1 1/2"	2510K46	000000
				50-3	ANSI	5/8"	20	4 5/16"	Plain	1" to 2 1/4"	2510K52	000000