30mm Overall Width Sprockets

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	ID ID

	Roller Chain Standard Roller Chain Standard

ISO

	Gear Type Gear Type

	Spur

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55 Products

About Roller Chain and Sprockets

About Gears

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 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
30	12	38	96.27	30	60	Steel	DIN 8187, ISO 606	0000000	000000
32	14	40	102.73	30	65	Steel	DIN 8187, ISO 606	00000000	00000
40	16	45	126.96	30	70	Steel	DIN 8187, ISO 606	00000000	00000
45	16	45	142.1	30	75	Steel	DIN 8187, ISO 606	00000000	00000
For ISO 08B Roller Chain (12.7 mm Pitch)
26	16	53	111.7	30	82	Steel	DIN 8187, ISO 606	00000000	00000
27	16	53	115.7	30	82	Steel	DIN 8187, ISO 606	00000000	00000
28	16	53	119.7	30	82	Steel	DIN 8187, ISO 606	00000000	00000
29	16	53	123.8	30	82	Steel	DIN 8187, ISO 606	00000000	00000
30	16	53	128.27	30	89	Steel	DIN 8187, ISO 606	0000000	00000
33	16	60	140.97	30	89	Steel	DIN 8187, ISO 606	00000000	00000

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-2 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
16	12	20	54.38	30	37	Steel	DIN 8187, ISO 606	00000000	000000
17	12	24	57.39	30	40	Steel	DIN 8187, ISO 606	00000000	00000
18	12	25	60.41	30	43	Steel	DIN 8187, ISO 606	00000000	00000
19	12	28	63.43	30	46	Steel	DIN 8187, ISO 606	00000000	00000
20	12	30	66.44	30	49	Steel	DIN 8187, ISO 606	00000000	00000
21	12	30	69.46	30	52	Steel	DIN 8187, ISO 606	0000000	00000
25	12	40	81.55	30	64	Steel	DIN 8187, ISO 606	00000000	00000
27	12	45	87.6	30	70	Steel	DIN 8187, ISO 606	00000000	00000
30	12	52	96.68	30	80	Steel	DIN 8187, ISO 606	00000000	00000

Self-Centering Screw-Clamp Bushings

A mounting flange prevents movement during tightening, so it's easy to center these bushings in your sprocket. They are also good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.

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

For Shaft Dia.	OD	Overall Wd.	Max. Torque, in.-lbs.	Fastener Tightening Torque, in.-lbs.	Material	Includes		Each
20mm	38mm	30mm	1,800	90	Steel	Clamping Screws	0000000	000000
22mm	40mm	30mm	2,000	90	Steel	Clamping Screws	0000000	00000
25mm	43mm	30mm	3,000	90	Steel	Clamping Screws	0000000	00000

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.

Carbon steel components have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals. They're best for high-torque machines, like lifting equipment, and heavy duty applications, such as rock crushing. Gears with teeth that are not hardened can be hardened to fit your application.

Stainless steel gears and racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.

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

Metric Gears

Gear with Round Bore

Gear with Round Bore and Set Screw

									Hub
Module	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Material	Teeth Heat Treatment	Dia., mm	Wd., mm	Set Screw Thread Size		Each
Round Bore
1	15	15	17	10	30	8	303 Stainless Steel	Not Hardened	17	20	__	00000000	000000
1	16	16	18	10	30	8	303 Stainless Steel	Not Hardened	18	20	__	00000000	00000
1	18	18	20	10	30	8	303 Stainless Steel	Not Hardened	20	20	__	00000000	00000
1	19	19	21	10	30	8	Black-Oxide 1045 Carbon Steel	Not Hardened	21	20	__	00000000	00000
2	15	30	34	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	24	10	__	00000000	00000
2	15	30	34	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	24	10	__	0000000	00000
2	16	32	36	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	26	10	__	00000000	00000
2	19	38	42	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	31	10	__	00000000	00000
2	20	40	44	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	32	10	__	00000000	00000
2	20	40	44	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	32	10	__	0000000	00000
2	24	48	52	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	38	10	__	00000000	00000
2	25	50	54	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	40	10	__	00000000	00000
2	30	60	64	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	50	10	__	0000000	00000
2	32	64	68	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	50	10	__	00000000	00000
2	36	72	76	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	55	10	__	00000000	00000
2	38	76	80	20	30	12	Black-Oxide 1045 Carbon Steel	Not Hardened	55	10	__	00000000	00000
2	40	80	84	20	30	15	Black-Oxide 1045 Carbon Steel	Not Hardened	55	10	__	0000000	00000
2	44	88	92	20	30	15	Black-Oxide 1045 Carbon Steel	Not Hardened	55	10	__	00000000	00000
2	45	90	94	20	30	15	Black-Oxide 1045 Carbon Steel	Not Hardened	55	10	__	00000000	00000
2	50	100	104	20	30	15	Black-Oxide 1045 Carbon Steel	Not Hardened	55	10	__	00000000	00000
2	60	120	124	20	30	15	Black-Oxide 1045 Carbon Steel	Not Hardened	60	10	__	0000000	00000
Round Bore with Set Screw
1	15	15	17	10	30	6	Black-Oxide 1045 Carbon Steel	Not Hardened	17	20	M4	0000000	00000
1	16	16	18	10	30	5	Black-Oxide 1045 Carbon Steel	Not Hardened	18	20	M4	00000000	00000
1.5	12	18	21	15	30	6	Black-Oxide 1045 Carbon Steel	Not Hardened	21	15	M4	0000000	00000

Plastic 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. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re 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.

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

Nylon gears can be operated without lubrication, so they’re commonly used in food-processing machines.

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

Metric Gears

Round Bore

										Hub
Module	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Material	Fabrication	Color	Dia., mm	Wd., mm		Each
Round Bore
2	12	24	28	20	30	10	Nylon Plastic	Machined	Blue	18	10	00000000	000000
2	15	30	34	20	30	10	Nylon Plastic	Machined	Blue	24	10	00000000	00000
2	16	32	36	20	30	10	Nylon Plastic	Machined	Blue	26	10	00000000	00000
2	18	36	40	20	30	10	Nylon Plastic	Machined	Blue	30	10	00000000	00000
2	20	40	44	20	30	10	Nylon Plastic	Machined	Blue	32	10	00000000	00000
2	24	48	52	20	30	10	Nylon Plastic	Machined	Blue	38	10	00000000	00000
2	25	50	54	20	30	10	Nylon Plastic	Machined	Blue	40	10	00000000	00000
2	28	56	60	20	30	10	Nylon Plastic	Machined	Blue	45	10	00000000	00000
2	30	60	64	20	30	10	Nylon Plastic	Machined	Blue	50	10	00000000	00000

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About Roller Chain and Sprockets

About Gears

Sprockets for Metric Roller Chain

Sprockets for Double-Strand Metric Roller Chain

Self-Centering Screw-Clamp Bushings

Metal Gears and Gear Racks—20° Pressure Angle

Plastic Gears and Gear Racks—20° Pressure Angle