ISO 05B Roller Chain Sprockets

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System of Measurement

Shaft Diameter

Number of Teeth

Pitch

Strand Type

Roller Chain Trade Number

Chain Type

Shaft Type

Bore Type

Hub Diameter

Component

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Material

Chain Standard

Width

Specifications Met

Sprocket Type

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

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EAR99

DFARS Specialty Metals

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28 Products

Sprockets

Plain Bore

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.

Steel—Steel is strong, but 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, mm	No. of Teeth	OD, mm	Bore Type	For Shaft Dia.		Each
For Single Strand







				Steel

				05B	ISO	8	8	24	Plain	6 mm to 8 mm	2302K79	000000


				05B	ISO	8	9	27	Plain	6 mm to 8 mm	2302K81	00000
				05B	ISO	8	10	29	Plain	8 mm to 11 mm	2302K82	00000
				05B	ISO	8	11	32	Plain	8 mm to 11 mm	2302K83	00000
				05B	ISO	8	12	34	Plain	8 mm to 12 mm	2302K54	00000
				05B	ISO	8	13	37	Plain	8 mm to 20 mm	2302K84	00000
				05B	ISO	8	14	40	Plain	8 mm to 15 mm	2302K55	00000
				05B	ISO	8	15	42	Plain	8 mm to 18 mm	2302K56	00000
				05B	ISO	8	16	45	Plain	8 mm to 19 mm	2302K57	00000
				05B	ISO	8	17	48	Plain	8 mm to 20 mm	2302K58	00000
				05B	ISO	8	18	50	Plain	8 mm to 22 mm	2302K59	00000


				05B	ISO	8	19	53	Plain	8 mm to 24 mm	2302K61	00000
				05B	ISO	8	20	55	Plain	8 mm to 25 mm	2302K62	00000
				05B	ISO	8	21	58	Plain	8 mm to 25 mm	2302K63	00000
				05B	ISO	8	22	60	Plain	8 mm to 25 mm	2302K64	00000
				05B	ISO	8	23	62	Plain	8 mm to 17 mm	2302K117	00000
				05B	ISO	8	24	65	Plain	8 mm to 17 mm	2302K118	00000
				05B	ISO	8	25	68	Plain	8 mm to 25 mm	2302K65	00000
				05B	ISO	8	26	70	Plain	10 mm to 22 mm	2302K85	00000
				05B	ISO	8	28	75	Plain	10 mm to 22 mm	2302K87	00000
				05B	ISO	8	30	81	Plain	10 mm to 30 mm	2302K66	00000

Idler Sprockets

Maintain constant tension on your roller chain to reduce wear and vibration. These sprockets press against the chain to take up slack and rotate freely on bearings to keep the chain moving smoothly. They’re often paired with roller chain tensioners.

For Single Strand

Ball Bearing

Ball Bearing—Smoother than smooth—the balls inside these bearings roll nearly friction-free to handle high speeds. All are sealed to keep lubricant in and dust out.

Steel—Steel is strong, but best for dry environments since moisture will cause it to rust.

	For Roller Chain
	Trade No.	Std.	Pitch, mm	No. of Teeth	For Shaft Dia., mm	OD, mm	Bearing Material		Each
Ball Bearing







				Steel

				05B	ISO	8	23	16	62	Steel	4182N11	000000

Roller Chain and Links

Chain

Connecting 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.

Corrosion-Resistant 304 Stainless Steel—Won't corrode from frequent washdowns and mild chemicals, including ammonia often found in cleaning solutions.

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







				Steel

				05B	ISO	8	5.00	3.00	270	6027K91	000000	6027K34	00000	6027K43	00000




						Corrosion-Resistant 304 Stainless Steel

						05B	ISO	8	5.00	3.00	25	60295K81	00000	60295K62	0000	60295K72	00000