ISO 08B Roller Chain Sprockets

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Number of Teeth

Roller Chain Trade Number

System of Measurement

Pitch

Shaft Diameter

Overall Width

Bore Type

Hub Diameter

Material

Shaft Type

Component

Chain Standard

Strand Type

Specifications Met

Sprocket Type

Chain Type

REACH

DFARS Specialty Metals

Exempt

RoHS

Compliant

Export Control Classification Number (ECCN)

Bearing Type

Shaft Mount Type

Bushing Trade Number

Performance

128 Products

Sprockets

For Single 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.

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

Corrosion-Resistant 18-8 Stainless Steel—Won't corrode from frequent washdowns and mild chemicals, including ammonia often found in cleaning solutions.

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, mm	Bore Type	For Shaft Dia.		Each
For Single Strand







				Steel

				08B	ISO	1/2"	9	43.4	Plain	10 mm to 15 mm	00000000	000000


				08B	ISO	1/2"	10	47.4	Plain	10 mm to 20 mm	00000000	00000
				08B	ISO	1/2"	11	51.4	Plain	10 mm to 22 mm	00000000	00000
				08B	ISO	1/2"	12	55.88	Plain	10 mm to 22 mm	0000000	00000
				08B	ISO	1/2"	13	59.4	Plain	10 mm to 25 mm	00000000	00000
				08B	ISO	1/2"	14	64.01	Plain	10 mm to 28 mm	0000000	00000
				08B	ISO	1/2"	15	67.82	Plain	10 mm to 30 mm	0000000	00000
				08B	ISO	1/2"	16	71.88	Plain	12 mm to 32 mm	0000000	00000
				08B	ISO	1/2"	17	75.95	Plain	12 mm to 35 mm	0000000	00000
				08B	ISO	1/2"	18	80.01	Plain	12 mm to 38 mm	0000000	00000
				08B	ISO	1/2"	19	84.07	Plain	12 mm to 40 mm	0000000	00000


				08B	ISO	1/2"	20	88.14	Plain	12 mm to 42 mm	0000000	00000
				08B	ISO	1/2"	21	91.95	Plain	12 mm to 45 mm	0000000	00000
				08B	ISO	1/2"	22	96.01	Plain	12 mm to 48 mm	0000000	00000
				08B	ISO	1/2"	23	99.6	Plain	12 mm to 51 mm	00000000	00000
				08B	ISO	1/2"	24	103.6	Plain	14 mm to 53 mm	00000000	00000
				08B	ISO	1/2"	25	108.2	Plain	14 mm to 53 mm	0000000	00000
				08B	ISO	1/2"	26	111.7	Plain	16 mm to 53 mm	00000000	00000
				08B	ISO	1/2"	27	115.7	Plain	16 mm to 53 mm	00000000	00000
				08B	ISO	1/2"	28	119.7	Plain	16 mm to 53 mm	00000000	00000
				08B	ISO	1/2"	29	123.8	Plain	16 mm to 53 mm	00000000	00000


				08B	ISO	1/2"	30	128.27	Plain	16 mm to 53 mm	0000000	00000
				08B	ISO	1/2"	33	140.97	Plain	16 mm to 60 mm	00000000	000000
				08B	ISO	1/2"	36	152.78	Plain	16 mm to 60 mm	00000000	000000
				08B	ISO	1/2"	40	168.99	Plain	19 mm to 60 mm	00000000	000000




						Corrosion-Resistant 18-8 Stainless Steel

						08B	ISO	1/2"	12	56.44	Plain	10 mm to 22 mm	0000000	000000


						08B	ISO	1/2"	15	68.45	Plain	10 mm to 30 mm	0000000	000000
						08B	ISO	1/2"	18	80.5	Plain	12 mm to 38 mm	0000000	000000

Flat Sprockets

Save space and cut weight—these sprockets don’t have a raised hub so they’re best for tight spots and lightweight designs. Bolt or weld them to components and mounting surfaces, or add a custom hub. Although they are versatile, they’re harder to align than sprockets with hubs.

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

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







				Steel

				08B	ISO	1/2"	13	59.94	Plain	10 mm to 38 mm	00000000	000000


				08B	ISO	1/2"	14	64.01	Plain	10 mm to 43 mm	00000000	00000
				08B	ISO	1/2"	15	67.82	Plain	10 mm to 47 mm	00000000	00000
				08B	ISO	1/2"	16	71.88	Plain	10 mm to 51 mm	00000000	00000
				08B	ISO	1/2"	17	75.95	Plain	10 mm to 55 mm	00000000	00000
				08B	ISO	1/2"	18	80.01	Plain	10 mm to 59 mm	00000000	00000
				08B	ISO	1/2"	20	88.14	Plain	10 mm to 67 mm	00000000	00000
				08B	ISO	1/2"	21	91.95	Plain	12 mm to 71 mm	00000000	00000
				08B	ISO	1/2"	22	96.01	Plain	12 mm to 75 mm	00000000	00000
				08B	ISO	1/2"	24	104.14	Plain	12 mm to 83 mm	00000000	00000
				08B	ISO	1/2"	25	108.2	Plain	12 mm to 87 mm	00000000	00000


				08B	ISO	1/2"	26	112.27	Plain	16 mm to 92 mm	00000000	00000
				08B	ISO	1/2"	27	116.33	Plain	16 mm to 96 mm	00000000	00000
				08B	ISO	1/2"	32	136.4	Plain	15 mm to 116 mm	00000000	00000
				08B	ISO	1/2"	36	152.65	Plain	15 mm to 132 mm	00000000	00000
				08B	ISO	1/2"	37	115.71	Plain	15 mm to 136 mm	00000000	00000
				08B	ISO	1/2"	39	121.77	Plain	18 mm to 144 mm	00000000	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	No. of Teeth	For Shaft Dia., mm	OD, mm	Bearing Material		Each
Ball Bearing







				Steel

				08B	ISO	1/2"	16	16	69.5	Steel	0000000	000000


				08B	ISO	1/2"	18	16	78	Steel	0000000	00000

Taper-Lock Bushing-Bore Sprockets

Sprocket Shown with

Bushing (Sold Separately)

For Single Strand

Quickly swap or service parts in tight spaces—no press-fitting or special tools required. Taper-lock bushings mount flush inside the sprocket hub for a slim profile. Mount a bushing (sold separately) on your shaft, slide the sprocket over it, and tighten the included set screws. As you tighten, the bushing grips the shaft and pulls it into your sprocket for a secure hold.

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

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.

	For Roller Chain
	Trade No.	Std.	Pitch	No. of Teeth	OD, mm	For Bushing Trade No.		Each
For Single Strand







				Steel

				08B	ISO	1/2"	32	136.4	1610	00000000	0000000


				08B	ISO	1/2"	38	160.53	1610	00000000	000000




						Wear-Resistant Steel with Hardened Teeth

						08B	ISO	1/2"	14	64.01	1008	00000000	00000


						08B	ISO	1/2"	15	67.82	1008	00000000	00000
						08B	ISO	1/2"	17	75.95	1210	00000000	00000
						08B	ISO	1/2"	18	80.01	1210	00000000	00000
						08B	ISO	1/2"	21	91.95	1610	00000000	00000
						08B	ISO	1/2"	24	104.14	1610	00000000	00000
						08B	ISO	1/2"	25	108.2	1610	00000000	000000

Bushings

Taper-Lock

Bushing

	Bushing Trade No.	For Shaft Dia.		Each
Taper-Lock Bushing



		1008	1/2"	000000000	000000


		1008	5/8"	000000000	00000
		1008	3/4"	000000000	00000
		1008	7/8"	000000000	00000
		1008	15/16"	000000000	00000
		1008	1"	000000000	00000
		1008	14 mm	000000000	00000
		1008	16 mm	000000000	00000
		1008	18 mm	000000000	00000
		1008	19 mm	000000000	00000
		1008	20 mm	000000000	00000


		1008	22 mm	000000000	00000
		1210	1/2"	000000000	00000
		1210	5/8"	000000000	00000
		1210	3/4"	000000000	00000
		1210	7/8"	000000000	00000
		1210	15/16"	000000000	00000
		1210	1"	000000000	00000
		1210	1 1/16"	000000000	00000
		1210	1 1/8"	000000000	00000
		1210	1 3/16"	000000000	00000


		1210	1 1/4"	000000000	00000
		1210	14 mm	000000000	00000
		1210	16 mm	000000000	00000
		1210	18 mm	000000000	00000
		1210	20 mm	000000000	00000
		1210	22 mm	000000000	00000
		1210	24 mm	000000000	00000
		1210	25 mm	000000000	00000
		1210	28 mm	000000000	00000
		1210	30 mm	000000000	00000


		1210	32 mm	000000000	00000
		1610	1/2"	000000000	00000
		1610	5/8"	000000000	00000
		1610	3/4"	000000000	00000
		1610	13/16"	000000000	00000
		1610	7/8"	000000000	00000
		1610	15/16"	000000000	00000
		1610	1"	000000000	00000
		1610	1 1/16"	000000000	00000
		1610	1 1/8"	000000000	00000


		1610	1 3/16"	000000000	00000
		1610	1 1/4"	000000000	00000
		1610	1 5/16"	000000000	00000
		1610	1 3/8"	000000000	00000
		1610	1 7/16"	000000000	00000
		1610	1 1/2"	000000000	00000
		1610	1 9/16"	000000000	00000
		1610	1 5/8"	000000000	00000
		1610	1 11/16"	000000000	00000
		1610	14 mm	000000000	00000

1610	16 mm	000000000	00000
1610	18 mm	000000000	00000
1610	19 mm	000000000	00000
1610	20 mm	000000000	00000
1610	22 mm	000000000	00000
1610	24 mm	000000000	00000
1610	25 mm	000000000	00000
1610	28 mm	000000000	00000
1610	30 mm	000000000	00000
1610	32 mm	000000000	00000
1610	35 mm	000000000	00000
1610	38 mm	000000000	00000

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-Coated Steel—Combines the strength of steel with the corrosion resistance of stainless steel. The coating has been tested to withstand 500 hours of salt spray, so it holds up well in wet and outdoor conditions.

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 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.

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







				Steel

				08B	ISO	1/2"	0.335"	0.305"	700	0000000	00000	0000000	00000	0000000	00000




						Corrosion-Resistant-Coated Steel

						08B	ISO	1/2"	0.335"	0.305"	700	000000	00000	00000000	0000	00000000	0000




								Corrosion-Resistant 304 Stainless Steel

								08B	ISO	1/2"	0.335"	0.305"	110	00000000	00000	00000000	0000	00000000	0000