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 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
36	16	45	114.84	30	70	Steel	DIN 8187, ISO 606	00000000	000000
38	16	45	120.9	30	70	Steel	DIN 8187, ISO 606	00000000	00000
40	16	45	126.96	30	70	Steel	DIN 8187, ISO 606	00000000	00000
42	16	45	133.01	30	70	Steel	DIN 8187, ISO 606	00000000	00000
For DIN, ISO 08B Roller Chain (12.7 mm Pitch)
21	12	45	91.95	28	70	Steel	DIN 8187, ISO 606	0000000	00000
For DIN, ISO 12B Roller Chain (19.05 mm Pitch)
15	12	45	103.37	35	70	Steel	DIN 8187, ISO 606	00000000	00000

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 08B Roller Chain (12.7 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
21	12	45	92.58	28	70	Stainless Steel	DIN 8187, ISO 606	0000000	0000000

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)
21	16	45	92.58	40	70	Steel	DIN 8187, ISO 606	00000000	000000
22	16	45	96.61	40	70	Steel	DIN 8187, ISO 606	00000000	000000
23	16	45	100.63	40	70	Steel	DIN 8187, ISO 606	00000000	000000

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
20	1610	88.14	25	70	Hardened	Steel	DIN 8187, ISO 606	00000000	000000
21	1610	91.95	25	70	Hardened	Steel	DIN 8187, ISO 606	00000000	00000
22	1610	96.01	25	70	Hardened	Steel	DIN 8187, ISO 606	00000000	00000

For Double-Strand Roller Chain

For ISO 08B-2 Roller Chain (12.7 mm Pitch)
Number of Teeth	For Bushing Style	OD, mm	Overall Wd., mm	Hub Dia., mm	Material	Specifications Met		Each
20	1610	88.14	25	70	Steel	DIN 8187, ISO 606	00000000	0000000
21	1610	91.95	25	70	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.

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

									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		Each
Round Bore
1.5	70	105	108	15	29	15	303 Stainless Steel	Not Hardened	70	14	00000000	0000000
1.5	75	112.5	115	15	29	15	303 Stainless Steel	Not Hardened	70	14	00000000	000000

High-Power Metal Gears

Crossed Right-Hand Gear
and Crossed Left-Hand
Gear (Sold Separately)

Two Crossed Gears with
Right-Hand Teeth
(Sold Separately)

Standard Gear on Gear Rack (Sold Separately)

Gear with Round Bore

The helical teeth on these gears stay in contact for longer than straight teeth, which allows them to transmit higher loads at higher speeds than spur gears.

For gears to mesh correctly, they must have the same pressure angle and pitch. All of these gears transmit motion in a straight line—make sure to get one left-hand and one right-hand gear. To change speed and torque in your assembly, pair two gears with different numbers of teeth.

Standard helical components have a 21 1/2° helix angle so they only transmit motion in a straight line since the helix angle is so small. Made from alloy steel, these gears resist abrasion and are stronger than carbon steel gears. Their teeth are ground, so they're more precise than gears with rolled teeth. Pair them with a rack or a gear that has a different tooth direction.

Crossed helical gears, also known as screw gears, can be configured to transmit motion at a 90° angle. To transmit motion at a 90° angle, pair two gears with the same tooth direction. To avoid wearing down gears, which happens when you use the same material, we recommend mating gears with different materials. Carbon steel gears are stronger than 303 stainless steel gears but are not as corrosion resistant.

Gears with hardened teeth have better wear resistance than gears with teeth that are not hardened.

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

Metric Standard Gears—20° Pressure Angle

									Hub
Module	Number of Teeth	Helix Angle	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Teeth Heat Treatment	Dia., mm	Wd., mm		Each
Left Hand
Round Bore—4140 Alloy Steel
1.5	80	21 1/2°	120	123	12	24	20	Hardened	70	12	00000000	0000000
1.5	90	21 1/2°	135	138	12	24	20	Hardened	70	12	00000000	000000
1.5	100	21 1/2°	150	153	12	24	20	Hardened	70	12	00000000	000000
2	70	21 1/2°	140	144	16	29	25	Hardened	70	13	00000000	000000
Right Hand
Round Bore—4140 Alloy Steel
1.5	80	21 1/2°	120	123	12	24	20	Hardened	70	12	00000000	000000
1.5	90	21 1/2°	135	138	12	24	20	Hardened	70	12	00000000	000000
1.5	100	21 1/2°	150	153	12	24	20	Hardened	70	12	00000000	000000
2	70	21 1/2°	140	144	16	29	25	Hardened	70	13	00000000	000000

Metric Crossed Gears—20° Pressure Angle

									Hub
Module	Number of Teeth	Helix Angle	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Teeth Heat Treatment	Dia., mm	Wd., mm		Each
Left Hand
Round Bore—Black-Oxide 1045 Carbon Steel
2.5	26	45°	92	96.92	22	38	20	Not Hardened	70	16	00000000	000000
4	15	45°	85	92.85	30	50	20	Not Hardened	70	20	00000000	000000
Right Hand
Round Bore—Black-Oxide 1045 Carbon Steel
2.5	26	45°	92	96.92	22	38	20	Not Hardened	70	16	00000000	00000
4	15	45°	85	92.85	30	50	20	Not Hardened	70	20	00000000	000000

Metal Bevel Gears

Gear and Pinion Sold Separately

Gear

A type of miter gear where one gear (sometimes called a pinion) is smaller than the other, bevel gears provide right-angle speed reduction at speed ratios ranging from 2:1 to 5:1. All are carbon steel for strength; they're compatible with plastic bevel gears. Teeth are not hardened so you can harden them to fit your application. Hardening a gear’s teeth increases its wear resistance.

A complete set consists of a gear and pinion (sold separately). For a gear and pinion to mesh correctly, they must have the same pressure angle, pitch/module, and face width. Shaft-mounted pinions come already securely fastened to a shaft.

Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.

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

Metric Gears

										Hub
Face Wd., mm	Module	Pressure Angle	Speed Ratio	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Overall Wd., mm	For Shaft Dia., mm	Mounting Distance (A), mm	Dia., mm	Wd., mm	Material		Each
Round Bore
20	2.5	20°	4:1	60	150	151	40	20	53	70	20	Black-Oxide 1045 Carbon Steel	00000000	0000000
20	2.5	20°	5:1	60	150	151	40	20	50	70	20	Black-Oxide 1045 Carbon Steel	00000000	000000

Metric Pinions

Pinion

										Hub
Face Wd., mm	Module	Pressure Angle	Speed Ratio	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Overall Wd., mm	For Shaft Dia., mm	Mounting Distance (B), mm	Dia., mm	Wd., mm	Material		Each
Round Bore
20	2.5	20°	4:1	15	38	44	39	12	94	30	18	Black-Oxide 1045 Carbon Steel	00000000	000000

Metric Shaft-Mounted Pinions

Shaft-Mounted Pinion

								Shaft			Hub
Face Wd., mm	Module	Pressure Angle	Speed Ratio	Number of Teeth	Gear Pitch Dia., mm	OD, mm	Overall Wd., mm	Dia., mm	Lg., mm	Mounting Distance (B), mm	Dia., mm	Wd., mm	Material		Each
20	2.5	20°	5:1	12	30	37	143	20.2	115	83	25	8	Black-Oxide 1045 Carbon Steel	00000000	000000

Plastic Miter Gears

Gears Sold Separately

Connect two shafts at a right angle without changing shaft speed or torque. Made of plastic, these gears run quieter than metal gears and have good corrosion and chemical resistance.

For two gears to mesh correctly, they must have the same pressure angle, pitch/module, and number of teeth.

Nylon gears are self-lubricating, so they’re often used in food machinery. However, they’re not approved for direct contact with food or chemicals that will come into contact with food.

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

Metric Gears

												Hub
Module	Number of Teeth	Pressure Angle	Gear Pitch Dia.	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Mounting Distance, mm	Material	Fabrication	Color	Dia., mm	Wd., mm		Each
Round Bore
3	30	20°	90mm	94.2	20	45	20	75	Nylon Plastic	Molded	Blue	70	20	00000000	0000000