Sprockets for 15 mm Shaft Diameter

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.

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	No. of Teeth	OD, mm	Bore Type	For Shaft Dia.		Each
For Single Strand







				Steel

				08B	ISO	1/2"	32	136	Plain	15 mm to 116 mm	6836N172	000000


				08B	ISO	1/2"	36	153	Plain	15 mm to 132 mm	6836N176	00000
				08B	ISO	1/2"	37	116	Plain	15 mm to 136 mm	6836N177	00000

Sprockets

Plain Bore

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

				04B	ISO	6 mm	21	43	Plain	8 mm to 15 mm	2302K49	000000


				04B	ISO	6 mm	22	45	Plain	8 mm to 15 mm	2302K51	00000
				04B	ISO	6 mm	25	50	Plain	8 mm to 15 mm	2302K52	00000
				05B	ISO	8 mm	14	40	Plain	8 mm to 15 mm	2302K55	00000
				08B	ISO	1/2"	9	43	Plain	10 mm to 15 mm	2302K104	00000

Metal Spur Gears

Our strongest spur gears for transferring motion. They’re better than plastic gears for high-load, high-speed, and heavy duty applications. 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.

Combine gears with different numbers of teeth to change speed and torque in your assembly. For components to mesh correctly, they must have the same pressure angle and pitch/module.

Gears

20° Pressure Angle

Round Bore

20° Pressure Angle—The current industry standard, these 20° pressure angle spur gears have thicker, stronger teeth than 14½° pressure angle gears.

Steel—Steel gears have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.

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

						Hub, mm
	Gear Module	No. of Teeth	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Dia.	Wd.	Bore Type	For Shaft Dia., mm	Tooth Heat Treatment	Material		Each
20° Pressure Angle







				Steel

				1.5	80	120	123	15	60	10	Round Bore	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N388	000000


				2	40	80	84	20	55	10	Round Bore	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N25	00000
				2	44	88	92	20	55	10	Round Bore	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N402	00000
				2	45	90	94	20	55	10	Round Bore	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N403	00000
				2	50	100	104	20	55	10	Round Bore	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N404	00000
				2	60	120	124	20	60	10	Round Bore	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2664N26	00000




						Stainless Steel

						1.5	90	135	138	15	80	14	Round Bore	15	Not Hardened	303 Stainless Steel	2664N533	000000


						1.5	100	150	153	15	80	14	Round Bore	15	Not Hardened	303 Stainless Steel	2664N505	000000
						2.5	15	37.5	42	25	30	18	Round Bore	15	Not Hardened	303 Stainless Steel	2664N564	00000
						2.5	20	50	55	25	40	18	Round Bore	15	Not Hardened	303 Stainless Steel	2664N567	000000
						2.5	30	75	80	25	65	18	Round Bore	15	Not Hardened	303 Stainless Steel	2664N573	000000

Gear Racks


20° Pressure Angle—Rectangular	20° Pressure Angle—Round

These racks match with spur gears to convert rotary motion to linear motion. For components to mesh correctly, they must have the same pressure angle and pitch/module.

Steel—Steel gear racks have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.

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

Hardened—Gear racks with hardened teeth have better wear resistance than racks with teeth that are not hardened.

	Ht., mm	Face Wd., mm	Dia., mm	Tooth Heat Treatment	Material	Features		Each
20° Pressure Angle—Rectangular







	Steel

	1.5	100	18.5	20	15	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N243	000000


	1.5	300	18.5	20	15	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N216	00000
	1.5	500	13.3	14.8	15	—	Not Hardened	1045 Carbon Steel	—	2485N203	000000
	1.5	1,000	13.3	14.8	15	—	Not Hardened	1045 Carbon Steel	—	2485N204	000000
	1.5	1,000	13.5	15	15	—	Not Hardened	Black-Oxide 1045 Carbon Steel	Machined Ends	2485N222	000000
	2	100	23	25	20	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N219	00000
	2	300	23	25	20	—	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N221	00000
	2	500	17.8	19.8	20	—	Not Hardened	1045 Carbon Steel	—	2485N205	000000
	2	1,000	17.8	19.8	20	—	Not Hardened	1045 Carbon Steel	—	2485N206	000000
	2	1,000	18	20	20	—	Not Hardened	Black-Oxide 1045 Carbon Steel	Machined Ends	2485N224	000000




			Stainless Steel

			1.5	500	18.5	20	15	—	Hardened	304 Stainless Steel	—	2485N231	000000


			1.5	1,000	18.5	20	15	—	Hardened	304 Stainless Steel	Machined Ends	2485N229	000000


			20° Pressure Angle—Round







							Steel

							1.5	500	13.5	—	—	15	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N225	000000


							2	1,000	18	—	—	20	Not Hardened	Black-Oxide 1045 Carbon Steel	—	2485N227	000000

Internal Gears

Image of Product. Front orientation. Internal Spur Gears. Metal Spur Gears.

Save space without losing power. Insert a standard spur gear inside one of these gears for a compact assembly that smoothly transmits motion. Combine gears with different numbers of teeth to change speed and torque in your assembly. For components to mesh correctly, they must have the same pressure angle and pitch/module.

Steel—Steel gears have strong and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals.

	OD, mm	ID, mm	Face Wd., mm	Tooth Heat Treatment	Finished Material		Each
20° Pressure Angle







	Steel

	1.5	100	150	190	147	15	Not Hardened	Black-Oxide 1045 Carbon Steel	2696N22	0000000


	2	100	200	250	196	20	Not Hardened	Black-Oxide 1045 Carbon Steel	2696N33	000000

Metal Miter Gears


Gears Sold Separately	Keyed Bore with Set Screw


For 90° Shaft Angle

With straight, conically shaped teeth and a 1:1 speed ratio, miter gears connect two shafts at an angle without changing shaft speed or torque. They're more efficient than spiral miter gears because they create less friction.

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

1045 Carbon Steel—Carbon steel gears have hard, strong, and wear-resistant teeth. They’re best for heavy duty and high-torque applications, such as lifting equipment. However, these gears will rust when exposed to moisture or corrosive chemicals. Some gears have hardened teeth for additional wear resistance; gears with teeth that are not hardened can be hardened to fit your application.

												Hub, mm		Keyway, mm
	Gear Module	No. of Teeth	For Shaft Angle	Pressure Angle	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Mounting Distance, mm	Tooth Heat Treatment	Dia.	Wd.	Wd.	Dp.	Set Screw Thread Size		Each
Keyed Bore with Set Screw







				1045 Carbon Steel

				1.5	30	90°	20°	45	47.1	10	28.2	15	43	Hardened	36	16	5	2.3	M5	2600N4	000000


				2	20	90°	20°	40	42.8	10	24.9	15	37	Hardened	34	14	5	2.3	M5	2600N5	00000
				2	25	90°	20°	50	52.8	12	24.3	15	40	Hardened	40	10	5	2.3	M5	2600N14	00000
				2	30	90°	20°	60	62.8	12	29.4	15	50	Hardened	45	12.5	5	2.3	M5	2600N15	00000

Metal Ratchet Gears and Pawls

Gears and

Pawls (Sold

Separately)

Gears

Compared to nylon gears, these metal ratchet gears are better for high-load, high-speed, and heavy duty applications. Used to prevent unwanted motion in jacks, tie downs, clutches, and winches, ratchet gears have sloped teeth that allow motion in one direction and prevent it in the other.

Hardened—Gears with hardened teeth are more wear resistant than gears with teeth that are not hardened.

									Hub, mm
	Face Wd., mm	No. of Teeth	OD, mm	For Shaft Dia., mm	Mounting Distance, mm	Material	Tooth Heat Treatment	Overall Wd., mm	Dia.	Wd.		Each
Round Bore



		12	60	60	15	48.2	1045 Carbon Steel	Hardened	12	—	—	6283K67	000000


		12	60	60	15	48.2	1045 Carbon Steel	Hardened	24	40	12	6283K95	00000
		12	80	80	15	54.7	1045 Carbon Steel	Hardened	12	—	—	6283K68	00000
		12	80	80	15	54.7	1045 Carbon Steel	Hardened	24	50	12	6283K96	00000
		12	100	100	15	62.2	1045 Carbon Steel	Hardened	12	—	—	6283K65	00000
		12	100	100	15	62.2	1045 Carbon Steel	Hardened	24	50	12	6283K93	00000
		15	30	60	15	61.2	1045 Carbon Steel	Hardened	15	—	—	6283K78	00000
		15	60	120	15	79.1	1045 Carbon Steel	Hardened	15	—	—	6283K82	000000
		20	30	90	15	76.3	1045 Carbon Steel	Hardened	20	—	—	6283K84	00000

Metal Worms and Worm Gears

Worm and

Gear Sold

Separately

Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle, pitch/module, number of thread starts, and thread direction. These worms are compatible with plastic worm gears.

Worms

Round Bore

Black-Oxide 1045 Carbon Steel—Black-Oxide 1045 carbon steel worms have rolled threads.

								Hub
	Gear Module	Pressure Angle	Worm Lg., mm	Gear Pitch Dia., mm	OD, mm	For Shaft Dia., mm	No. of Thread Starts	Dia., mm	Material	Thread Direction	Tooth Heat Treatment	Tooth Mechanical Finish	Set Screw Included		Each
Round Bore—Black-Oxide 1045 Carbon Steel



		2.5	20°	63	37	42	15	2	30	1045 Carbon Steel	Right Hand	Not Hardened	Unfinished	No	57545K638	000000

Metal Bevel Gears

Gears Sold

Separately

Large Gears

Bevel gears provide right-angle speed reduction. They're a type of miter gear installed so that one gear is smaller than the other to achieve speed ratios ranging from 3:2 to 5:1. All are made of carbon steel for good strength.

A complete set consists of a large gear and a small gear, also known as a pinion (sold separately). For the gears to mesh correctly, they must have the same face width, pitch or module, and pressure angle.

Speed Ratio—The ratio by which shaft speed is reduced when transferring motion from the smaller to the larger gear. To increase shaft speed, transfer motion from the larger to the smaller gear. Changing shaft speed also changes torque: as speed decreases, torque increases. To achieve the speed ratio listed, match it across a set of compatible gears.

					Large Gears
Face Wd., mm	Gear Module	Pressure Angle	Speed Ratio	Material	For Shaft Dia., mm		Each
15	2.5	20°	2:1	1045 Carbon Steel	15	2515N348	000000
15	2.5	20°	3:2	1045 Carbon Steel	15	2515N349	00000

Quick-Grip Screw-Clamp Bushings

Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed. As you tighten the collar nut, the inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf		Each
Steel



	15	26	29	1,250	2298K46	000000