ISO 21287 Air Cylinders | McMaster-Carr

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100 lbf to 199 lbf

200 lbf to 249 lbf

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About Air Cylinders

Select a cylinder, prolong its life by reducing wear, and trigger automated processes with sensors.

Flexible-Mount ISO Air Cylinders

For multiple mounting options, these air cylinders match an industry standard ISO footprint and have threaded holes on the face and sides. Their ISO footprint makes it easy to change out an old air cylinder. To mount them directly to equipment or add on attachments, use the threaded through holes. These cylinders are double acting, so they push and pull loads with equal force.

The piston is magnetic, so you can use these cylinders with sensors (not included) to activate relays and controllers. When the piston moves past a sensor, the sensor activates. You can use multiple sensors—one for each action you want to trigger.

Sensor-Ready

	Air Cylinders													Sensors
	Lg., mm						Air Inlet
	Stroke	Retracted	Extended	Force @ 100 psi, lbf	Body Material	Bearing Material	Pipe Size	Thread Size	Thread Type	Gender	Specs. Met		Each	Sensor Type	DC Voltage, V DC		Each
20 mm Bore (36 mm Wide)



		10	53	63	49	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N11	000000	Reed Switch with LED	24, 100	62245K92	000000


		25	68	93	49	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N12	00000	Reed Switch with LED	24, 100	62245K92	00000
		50	93	143	49	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N13	00000	Reed Switch with LED	24, 100	62245K92	00000
		80	123	203	49	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N14	00000	Reed Switch with LED	24, 100	62245K92	00000


		25 mm Bore (40 mm Wide)



				25	70	95	77	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N22	00000	Reed Switch with LED	24, 100	62245K92	00000


				50	95	145	77	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N23	00000	Reed Switch with LED	24, 100	62245K92	00000
				80	125	205	75	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N26	00000	Reed Switch with LED	5 to 30	6477N111	00000
				100	145	245	75	Aluminum	Bronze	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6477N27	00000	Reed Switch with LED	5 to 30	6477N111	00000


				32 mm Bore (46 mm Wide)



						25	76	101	126	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N32	00000	Reed Switch with LED	24, 100	62245K92	00000


						32 mm Bore (48 mm Wide)



								50	101	151	124	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N36	00000	Reed Switch with LED	5 to 30	6477N111	00000


								80	131	211	124	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N37	00000	Reed Switch with LED	5 to 30	6477N111	00000
								100	151	251	124	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N38	00000	Reed Switch with LED	5 to 30	6477N111	00000


								50 mm Bore (68 mm Wide)



										25	78	103	303	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N46	000000	Reed Switch with LED	5 to 30	6477N111	00000


										50	103	153	303	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N47	000000	Reed Switch with LED	5 to 30	6477N111	00000
										80	133	213	303	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N48	000000	Reed Switch with LED	5 to 30	6477N111	00000
										100	153	253	303	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N49	000000	Reed Switch with LED	5 to 30	6477N111	00000


										63 mm Bore (78 mm Wide)



												25	82	107	482	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N56	000000	Reed Switch with LED	5 to 30	6477N111	00000


												50	107	157	482	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N57	000000	Reed Switch with LED	5 to 30	6477N111	00000
												80	137	217	482	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N58	000000	Reed Switch with LED	5 to 30	6477N111	00000
												100	157	257	482	Aluminum	Bronze	1/8	—	BSPP	Female	ISO 21287	6477N59	000000	Reed Switch with LED	5 to 30	6477N111	00000

Accessories and Replacements for Air Cylinders

Foot Brackets

Foot-Bracket Actuator

Connection

					Base Mounting Holes				Top Mounting Holes
For Bore Size, mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thk., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material	Actuator Connection Hardware		Each
20	23	22	36	4	2	7	22	No	2	6	22	Yes	Zinc-Plated Steel	Foot Bracket	6477N801	00000
25	23	22	40	4	2	7	26	No	2	6	26	Yes	Zinc-Plated Steel	Foot Bracket	6477N802	0000
32	35	26	45	4	2	7	32	No	2	7	32.5	Yes	Zinc-Plated Steel	Foot Bracket	6477N102	00000
50	47	35	65	5	2	9	45	No	2	9	46.5	Yes	Zinc-Plated Steel	Foot Bracket	6477N103	00000
63	47	35	75	5	2	9	50	No	2	9	56.5	Yes	Zinc-Plated Steel	Foot Bracket	6477N104	00000

Front or Rear Flanges

Front or Rear

Flange Actuator

Connection

				Inside Mounting Holes				Outside Mounting Holes
For Bore Size, mm	Wd., mm	Ht., mm	Thk., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material	Actuator Connection Hardware		Each
20	38	68	8	4	6	22	Yes	2	7	55	No	Anodized Aluminum	Front Flange, Rear Flange	6477N701	000000
25	38	73	8	4	6	26	Yes	2	7	60	No	Anodized Aluminum	Front Flange, Rear Flange	6477N702	00000
32	50	80	10	4	7	35.5	Yes	4	7	64	No	Zinc-Plated Steel	Front Flange, Rear Flange	6477N302	00000
50	65	110	12	4	9	46.5	Yes	4	9	90	No	Zinc-Plated Steel	Front Flange, Rear Flange	6477N303	00000
63	75	120	12	4	9	56.5	Yes	4	9	100	No	Zinc-Plated Steel	Front Flange, Rear Flange	6477N304	00000

Pivot Brackets

Pivot-Bracket

Actuator Connection

						Mounting Holes
For Bore Size, mm	For Pin Dia., mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thk., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material	Actuator Connection Hardware		Each
20	8	35	35	29	8	4	6	22	Yes	Anodized Aluminum	Pivot Bracket	6477N601	000000
25	8	40	40	29	8	4	6	26	Yes	Anodized Aluminum	Pivot Bracket	6477N602	00000

Clevis Brackets

Clevis-Bracket-with-Pin

Actuator Connection

	Pin							Mounting Holes
For Bore Size, mm	Dia., mm	Material	Wd., mm	Ht., mm	Dp., mm	Jaw Opening Wd., mm	Base Plate Thk., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material	Includes	Actuator Connection Hardware		Each
32	10	Steel	45	45	32	26	10	4	7	32.5	Yes	Zinc-Plated Steel	Four Washers, One Pin, Two Snap Rings	Clevis Bracket with Pin	6477N202	000000
50	12	Steel	65	65	40	32	12	4	9	46.5	Yes	Zinc-Plated Steel	Four Washers, One Pin, Two Snap Rings	Clevis Bracket with Pin	6477N203	00000
63	16	Steel	75	75	50	40	12	4	9	56.5	Yes	Zinc-Plated Steel	Four Washers, One Pin, Two Snap Rings	Clevis Bracket with Pin	6477N204	00000

Replacement Seal Kits

For Bore Size, mm	Includes	For Bearing Material		Each
20	Piston Seal, Rod Seal, Tube Gasket	Bronze	6477N901	00000
25	Piston Seal, Rod Seal, Tube Gasket	Bronze	6477N902	0000
25	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	Bronze	6477N401	0000
32	Piston Seal, Rod Seal, Tube Gasket	Bronze	6477N903	0000
32	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	Bronze	6477N402	00000
50	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	Bronze	6477N403	00000
63	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	Bronze	6477N404	00000

Clean Room Flexible-Mount Air Cylinders

Mount these cylinders directly to equipment in environments where contamination is a concern, such as electronics manufacturing. Use the threaded through-holes on the face to connect to equipment, or mount them with attachments (not included). Hook these cylinders into your compressed air line to push and pull loads. They’re double-acting, so they operate at full force in either direction. The magnetic piston inside these cylinders can activate relays and controllers when used with a sensor (not included). As the piston moves past the sensor, the sensor activates. You can use multiple sensors—attach one for each action you want to trigger.

Connect mounts to an air cylinder to create linear, pivot, or arc movements.

Sensor Ready About Sensor Ready

Bumper Cushion

Fed. Std. Class 1,000 and ISO Class 6—Cylinders that are rated for use in Fed. Std. Class 1,000 and ISO Class 6 clean rooms have a low-friction polyurethane seal that wears slower and creates fewer particles than standard seals. As the rod moves, the seal wipes its surface clean of grease particles. The end caps are tightly crimped to stop air from leaking out. These cylinders have an ISO industry-standard footprint that fits common mounting patterns.

	Lg., mm							Air Inlet
	Stroke	Retracted	Extended	Force @ 100 psi, lbf	Clean Room Std.	Cylinder Cushion Type	Body Material	Pipe Size	Thread Size	Thread Type	Gender	Specs. Met		Each
25 mm Bore (40 mm Wide)



		10	71	65	76	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6825N11	000000


		15	76	75	76	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6825N12	00000
		20	81	85	76	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6825N13	00000
		25	70	95	76	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	—	M5 × 0.8 mm	Metric	Female	ISO 21287	6825N14	00000


		32 mm Bore (47 mm Wide)



				10	60	70	124	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N15	00000


				15	65	80	124	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N16	00000
				20	70	90	124	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N17	00000
				25	75	100	124	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N18	00000


				40 mm Bore (55 mm Wide)



						10	61	71	194	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N19	000000


						15	66	81	194	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N21	000000
						20	71	91	194	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N22	000000
						25	76	101	194	Fed. Std. Class 1,000; ISO Class 6	Bumper	Aluminum	1/8	—	BSPP	Female	ISO 21287	6825N23	000000

Accessories for Air Cylinders

Rod Ends for Universal-Mount Air Cylinders

For Bore Size, mm	Lg., mm	Wd., mm	Ht., mm	ID, mm	Material	For Mount Type	Actuator Connection Hardware		Each
20	48	14	24	8	Zinc-Plated Steel	Universal	Rod End	6458N31	00000
25, 32	57	17	28	10	Zinc-Plated Steel	Universal	Rod End	6458N32	0000

Rod End Nuts

For Bore Size, mm	Overall Dia., mm	ID, mm	Thread Size	Material	For Mount Type	Mounting Hardware Included	Ctr. Lg., mm	Gender	Actuator Connection Hardware		Each
20	20	9	M8 × 1.25 mm	Nickel-Plated Steel	Universal	No	36	Female	Rod End Nut	6458N34	00000
25, 32	20	9	M10 × 1.25 mm	Nickel-Plated Steel	Universal	No	38	Female	Rod End Nut	6458N35	0000

Pivot Brackets

						Mounting Holes
For Bore Size, mm	Pinhole Dia., mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thk., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Hardware Included	Material	Includes	Specs. Met	Actuator Connection Hardware		Each
32	10	48	48	32	10	4	6	32.5	Yes	Aluminum	Four Bolts	ISO 15552	Pivot Bracket	60405K91	000000
40	12	53	53	37	10	4	6	38	Yes	Aluminum	Four Bolts	ISO 15552	Pivot Bracket	60405K92	00000

Foot Brackets

					Base Mounting Holes				Top Mounting Holes
For Bore Size, mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thk., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material	Actuator Connection Hardware		Each
25	23	22	40	4	2	7	26	No	2	6	26	Yes	Zinc-Plated Steel	Foot Bracket	6477N802	00000