27 Teeth Sprockets | McMaster-Carr

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	Pitch Pitch

0.500"

	For Roller Chain Strand Type For Roller Chain Strand Type


Single	Double

	OD OD

	Material Material

Steel

Stainless Steel

Brass

	Bore Type Bore Type

	Sprocket Type Sprocket Type

Standard

	For Shaft Type For Shaft Type

Keyed

Round

	Roller Chain Standard Roller Chain Standard

ANSI

ISO

DIN

	Overall Width Overall Width

	ID ID

	Hub Diameter Hub Diameter

	Specifications Met Specifications Met

ISO

DIN

	For Maximum Shaft Diameter For Maximum Shaft Diameter

	Keyway Depth Keyway Depth

3/32"

1/8"

	Keyway Width Keyway Width

3/16"

1/4"

	Shaft Mount Type Shaft Mount Type

Set Screw

	For Bushing Type For Bushing Type

Taper Lock

	Component Component

	Gear

	Teeth Heat Treatment Teeth Heat Treatment

Hardened

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45 Products

About Roller Chain and Sprockets

About Gears

With Keyway

Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.

For technical drawings and 3-D models, click on a part number.

For ANSI 41 Roller Chain (1/2" Pitch)

					Keyway
Number of Teeth	For Shaft Dia.	OD	Overall Wd.	Hub Dia.	Wd.	Dp.	Material	Includes		Each
27	5/8"	4.58"	1"	3 1/4"	3/16"	3/32"	Steel	Two Set Screws	00000000	000000
27	3/4"	4.58"	1"	3 1/4"	3/16"	3/32"	Steel	Two Set Screws	00000000	00000
27	7/8"	4.58"	1"	3 1/4"	3/16"	3/32"	Steel	Two Set Screws	00000000	00000
27	1"	4.58"	1"	3 1/4"	1/4"	1/8"	Steel	Two Set Screws	00000000	00000

Sprockets for Metric Roller Chain

Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.

For technical drawings and 3-D models, click on a part number.

For DIN, ISO 04B Roller Chain (6 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
27	8	15	54	15	30	Steel	DIN 8187, ISO 606	0000000	000000
For DIN, ISO 05B Roller Chain (8 mm Pitch)
27	10	22	72.2	16	40	Steel	DIN 8187, ISO 606	0000000	00000
For DIN, ISO 06B Roller Chain (9.53 mm Pitch)
27	12	38	86	28	60	Steel	DIN 8187, ISO 606	00000000	00000
For DIN, ISO 08B Roller Chain (12.7 mm Pitch)
27	16	53	115.7	30	82	Steel	DIN 8187, ISO 606	00000000	00000
For DIN, ISO 10B Roller Chain (15.88 mm Pitch)
27	19	51	146.43	32	76	Steel	DIN 8187, ISO 606	00000000	00000
For DIN, ISO 12B Roller Chain (19.05 mm Pitch)
27	20	67	175.84	40	100	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 16B Roller Chain (25.4 mm Pitch)
27	32	80	234.67	50	120	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 20B Roller Chain (31.75 mm Pitch)
27	32	84	294.13	51	127	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 24B Roller Chain (38.1 mm Pitch)
27	40	102	350.41	65	150	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 28B Roller Chain (44.45 mm Pitch)
27	40	108	410.51	64	160	Steel	DIN 8187, ISO 606	00000000	000000
For DIN, ISO 32B Roller Chain (50.8 mm Pitch)
27	40	133	471.87	76	181	Steel	DIN 8187, ISO 606	00000000	000000

Machinable-Bore Corrosion-Resistant
Sprockets for Metric Roller Chain

Machine the center of these sprockets to fit the exact dimensions of your shaft. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size. The teeth are sized to fit into metric ISO roller chain. Made from stainless steel, they won’t corrode from humidity or frequent washdowns. The extended hub makes these sprockets more stable and more durable than sprockets with flat hubs. They meet ISO 606 (formerly DIN 8187), which is an international standard for dimensions and materials.

For technical drawings and 3-D models, click on a part number.

For ISO 06B Roller Chain (9.53 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
27	12	38	87.6	28	60	Stainless Steel	DIN 8187, ISO 606	0000000	0000000
For ISO 08B Roller Chain (12.7 mm Pitch)
27	16	53	116.76	30	82	Stainless Steel	DIN 8187, ISO 606	0000000	000000

Flat Sprockets for Metric Roller Chain

With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets. Machine the unfinished bore to fit your shaft—sprockets come machined to the shaft diameter listed and are machinable up to the maximum shaft diameter size. Sprockets meet DIN 8187 and ISO 606, international standards for sprockets and roller chains.

For technical drawings and 3-D models, click on a part number.

For ISO 06B Roller Chain (9.525 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Material	Specifications Met		Each
27	10	72	87.12	6	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 08B Roller Chain (12.7 mm Pitch)
27	16	96	116.33	8	Steel	DIN 8187, ISO 606	00000000	00000
For ISO 10B Roller Chain (15.875 mm Pitch)
27	18	120	145.29	9	Steel	DIN 8187, ISO 606	00000000	00000
For ISO 12B Roller Chain (19.05 mm Pitch)
27	19	145	174.5	12	Steel	DIN 8187, ISO 606	00000000	00000
For ISO 16B Roller Chain (25.4 mm Pitch)
27	30	195	232.66	17	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 20B Roller Chain (31.75 mm Pitch)
27	32	243	290.58	19	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 24B Roller Chain (38.1 mm Pitch)
27	40	290	344.17	25	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 28B Roller Chain (44.45 mm Pitch)
27	40	341	405.13	30	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 32B Roller Chain (50.8 mm Pitch)
27	40	390	465.33	30	Steel	DIN 8187, ISO 606	00000000	000000

Sprockets for Double-Strand Metric Roller Chain

The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain. They have an unfinished bore that’s machined to the shaft diameter size listed. Machine them to fit any shaft up to the maximum shaft diameter size. The extended hub makes these sprockets more stable and more durable than flat sprockets. They meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.

For technical drawings and 3-D models, click on a part number.

For ISO 06B Roller Chain (9.53 mm Pitch)
Number of Teeth	For Shaft Dia., mm	For Max. Shaft Dia., mm	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
27	12	45	87.6	30	70	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 08B Roller Chain (12.7 mm Pitch)
27	20	56	116.76	40	85	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 10B Roller Chain (15.88 mm Pitch)
27	20	73	146.43	45	110	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 12B Roller Chain (19.05 mm Pitch)
27	20	80	175.84	50	120	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 16B Roller Chain (25.4 mm Pitch)
27	25	85	234.67	70	130	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 20B Roller Chain (31.75 mm Pitch)
27	32	96	294.13	80	145	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 24B Roller Chain (38.1 mm Pitch)
27	40	108	350.41	102	160	Steel	DIN 8187, ISO 606	00000000	00000000
For ISO 32B Roller Chain (50.8 mm Pitch)
27	40	130	471.87	120	191	Steel	DIN 8187, ISO 606	00000000	00000000

Taper-Lock Bushing-Bore
Sprockets for Metric Roller Chain

While their teeth fit into metric ISO roller chain, these sprockets use taper-lock bushings to grip shafts. That means you can switch to a different diameter shaft by changing the bushing instead of machining the sprocket. Bushings mount flush inside these sprockets; secure them in place by tightening the set screws included with the bushings. These sprockets have an extended hub that makes them more stable and durable than flat sprockets. All meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.

For technical drawings and 3-D models, click on a part number.

For Single-Strand Roller Chain

For ISO 08B Roller Chain (12.7 mm Pitch)
Number of Teeth	For Bushing Style	OD, mm	Overall Wd., mm	Hub Dia., mm	Teeth Heat Treatment	Material	Specifications Met		Each
27	1610	116.33	25	76	Hardened	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 10B Roller Chain (15.88 mm Pitch)
27	2012	145.29	32	90.47	Hardened	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 12B Roller Chain (19.05 mm Pitch)
27	2012	174.5	32	90.47	Hardened	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 16B Roller Chain (25.4 mm Pitch)
27	2517	232.66	44	107.95	Hardened	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 24B Roller Chain (38.1 mm Pitch)
27	3020	344.17	51	133.35	Hardened	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 28B Roller Chain (44.45 mm Pitch)
27	3020	405.13	51	133.35	__	Steel	DIN 8187, ISO 606	00000000	000000
For ISO 32B Roller Chain (50.8 mm Pitch)
27	3535	465.33	89	165.1	__	Steel	DIN 8187, ISO 606	00000000	000000

For Double-Strand Roller Chain

For ISO 12B-2 Roller Chain (19.05 mm Pitch)
Number of Teeth	For Bushing Style	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
27	2517	174.5	44	107.95	Steel	DIN 8187, ISO 606	00000000	0000000
For ISO 16B-2 Roller Chain (25.4 mm Pitch)
27	3020	232.66	51	133.35	Steel	DIN 8187, ISO 606	00000000	000000

Metal Gears and Gear Racks—20° Pressure Angle

The current industry standard, these 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. Compared to plastic gears and racks, they’re better for high-load, high-speed, and heavy duty applications. Also known as spur gears.

Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion. To minimize your footprint, mount one or more standard gears inside of an internal gear.

For components to mesh correctly, they must have the same pressure angle and pitch/module.

Brass gears and racks are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.

For technical drawings and 3-D models, click on a part number.

Metric Gears

Gear with Round Bore and Set Screw

								Hub
Module	Number of Teeth	Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Material	Dia., mm	Wd., mm	Set Screw Thread Size		Each
Round Bore with Set Screw
0.8	27	21.6	23.2	4	12	5	Brass	8	8	M4	00000000	000000
1	27	27	29	6	14	6	Brass	22	8	M4	00000000	00000

Terms and Conditions and Privacy Policy

About Roller Chain and Sprockets

About Gears

Sprockets for ANSI Roller Chain

Sprockets for Metric Roller Chain

Machinable-Bore Corrosion-ResistantSprockets for Metric Roller Chain

Flat Sprockets for Metric Roller Chain

Sprockets for Double-Strand Metric Roller Chain

Taper-Lock Bushing-BoreSprockets for Metric Roller Chain

Metal Gears and Gear Racks—20° Pressure Angle

Machinable-Bore Corrosion-Resistant
Sprockets for Metric Roller Chain

Taper-Lock Bushing-Bore
Sprockets for Metric Roller Chain