Sprockets for 25mm Shaft Diameter

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

				05B	ISO	8 mm	20	55	Plain	8 mm to 25 mm	2302K62	000000


				05B	ISO	8 mm	21	58	Plain	8 mm to 25 mm	2302K63	00000
				05B	ISO	8 mm	22	60	Plain	8 mm to 25 mm	2302K64	00000
				05B	ISO	8 mm	25	68	Plain	8 mm to 25 mm	2302K65	00000
				06B	ISO	3/8"	17	57	Plain	10 mm to 25 mm	2302K6	00000
				06B	ISO	3/8"	18	60	Plain	10 mm to 25 mm	2302K7	00000
				08B	ISO	1/2"	13	59	Plain	10 mm to 25 mm	2302K107	00000
				10B	ISO	5/8"	11	66	Plain	12 mm to 25 mm	2302K252	00000
				16B	ISO	1"	17	154	Plain	25 mm to 67 mm	2302K378	000000
				16B	ISO	1"	20	178	Plain	25 mm to 70 mm	2302K382	000000




						Corrosion-Resistant 18-8 Stainless Steel

						06B	ISO	3/8"	17	57	Plain	10 mm to 25 mm	6905N16	000000


						For Double Strand







										Steel

										06B-2	ISO	3/8"	18	60	Plain	12 mm to 25 mm	3571N107	00000

Taper-Lock Bushings

Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing trade number. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.

			Keyway, mm
	For Shaft Dia., mm	Overall Wd., mm	Wd.	Dp.	Taper	Fastener Tightening Torque, in·lbf	Includes		Each
Steel







				Bushing Trade Number 1210

				25	25	8	3.3	8°	175	Set Screws	57095K455	000000




						Bushing Trade Number 1610

						25	25	8	3.3	8°	175	Set Screws	57095K497	00000




								Bushing Trade Number 2012

								25	32	8	3.3	8°	280	Set Screws	57095K552	00000




										Bushing Trade Number 2517

										25	44	8	3.3	8°	430	Set Screws	57095K579	00000

Quick-Disconnect (QD) Bushings


Clamp-On Shaft Mount

The screw connections on these bushings easily mate to compatible quick-disconnect sprockets and pulleys. Bushings fit quick-disconnect (QD) sprockets and pulleys of the same bushing trade number. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

		Keyway, mm
	Overall Wd., mm	Wd.	Dp.	Fastener Tightening Torque, in·lbf	Material	Includes	For Shaft Dia., mm		Each
Clamp-On Shaft Mount







				Bushing Trade Number SD

				46	8	3.3	108	Sintered Steel	Clamping Screws	25	2344K32	000000




						Bushing Trade Number SDS

						35	8	3.3	108	Sintered Steel	Clamping Screws	25	2344K22	00000




								Bushing Trade Number SH

								33	8	3.3	108	Sintered Steel	Clamping Screws	25	2344K12	00000




										Bushing Trade Number SK

										49	8	3.3	180	Sintered Steel	Clamping Screws	25	2344K42	00000

Split-Tapered Bushings

Steel

The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing trade number. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.

			Keyway, mm
	For Shaft Dia., mm	Overall Wd.	Wd.	Dp.	Taper	Fastener Tightening Torque, in·lbf		Each
Steel







				Bushing Trade Number H with Clamping Screws

				25	1 1/4"	8	3	3°	95	9859T722	000000

Corrosion-Resistant Flush-Mount Screw-Clamp Bushings

Insert these nickel-plated steel bushings into the bore of your sprocket for flush or recessed mounting in wet environments. When you tighten the included clamping screws on these bushings, their inner sleeve contracts onto the shaft and their outer sleeve expands to hold your sprocket, pulley, or gear. This keeps bushings from slipping during sudden starts and stops.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Nickel-Plated Steel



	25	50	26	3,750	150	Clamping Screws	5515N11	0000000

Corrosion-Resistant Flanged Screw-Clamp Bushings

Made from stainless steel or plated with nickel, these bushings resist corrosion. A mounting flange prevents movement during tightening. As screw-clamp bushings, they're good for shock loads. When you tighten the clamping screws, the bushing's inner sleeve tightens onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.

Nickel-Plated Steel—Nickel-plated steel bushings have good corrosion resistance in wet environments. However, the plating may begin to flake with long-term use.

Stainless Steel—Stainless steel bushings have excellent corrosion resistance and can withstand prolonged exposure to moisture.

	OD, mm	Overall Wd., mm	Max. Torque, in·lbf	Fastener Tightening Torque, in·lbf	Includes		Each
Nickel-Plated Steel



	25	50	38	2,100	70	Clamping Screws	5530N25	0000000


	Stainless Steel



			25	50	38	1,700	60	Clamping Screws	5530N111	000000

Flanged Screw-Clamp Bushings

A mounting flange prevents movement during tightening. These bushings are 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.

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



	25	43	30	3,000	90	Clamping Screws	1058K77	000000

Flush-Mount Screw-Clamp Bushings

Insert these bushings into the bore of your sprocket for flush or recessed mounting. They handle shock loads. When you tighten the included clamping 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.

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



	25	55	40	6,950	142	Clamping Screws	1070N12	0000000

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
Zinc-Plated Steel



	25	45	48	3,200	2298K58	0000000