ISO 21287 Air Cylinders | McMaster-Carr

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62 Products

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.

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

Sensor Ready

Air Cylinders
Lg.					Air Inlet						Sensors
Stroke, mm	Retracted, mm	Extended, mm	Force @ 100 psi, lbs.	Body Material	Pipe Size	Thread Size	Thread Type	Gender		Each		Each
20 mm Bore Size (36 mm Wd.)
10	53	63	49	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	000000	00000000	000000
25	68	93	49	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
50	93	143	49	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
80	123	203	49	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
25 mm Bore Size (40 mm Wd.)
25	70	95	77	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
50	95	145	77	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
80	125	205	75	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
100	145	245	75	Aluminum	__	M5 × 0.8 mm	Metric	Female	0000000	00000	00000000	00000
32 mm Bore Size (46 mm Wd.)
25	76	101	126	Aluminum	1/8	__	BSPP	Female	0000000	00000	00000000	00000
32 mm Bore Size (48 mm Wd.)
50	101	151	124	Aluminum	1/8	__	BSPP	Female	0000000	00000	00000000	00000
80	131	211	124	Aluminum	1/8	__	BSPP	Female	0000000	00000	00000000	00000
100	151	251	124	Aluminum	1/8	__	BSPP	Female	0000000	00000	00000000	00000
50 mm Bore Size (68 mm Wd.)
25	78	103	303	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
50	103	153	303	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
80	133	213	303	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
100	153	253	303	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
63 mm Bore Size (78 mm Wd.)
25	82	107	482	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
50	107	157	482	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
80	137	217	482	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000
100	157	257	482	Aluminum	1/8	__	BSPP	Female	0000000	000000	00000000	00000

Foot Brackets

					Base Mounting Holes				Top Mounting Holes
For Bore Size, mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thick., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material		Each
20	23	22	36	4	2	7	22	No	2	6	22	Yes	Zinc-Plated Steel	00000000	00000
25	23	22	40	4	2	7	26	No	2	6	26	Yes	Zinc-Plated Steel	00000000	0000
32	35	26	45	4	2	7	32	No	2	7	32.5	Yes	Zinc-Plated Steel	00000000	00000
50	47	35	65	5	2	9	45	No	2	9	46.5	Yes	Zinc-Plated Steel	00000000	00000
63	47	35	75	5	2	9	50	No	2	9	56.5	Yes	Zinc-Plated Steel	00000000	00000

Front or Rear Flanges

				Inside Mounting Holes				Outside Mounting Holes
For Bore Size, mm	Wd., mm	Ht., mm	Thick., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material		Each
20	38	68	8	4	6	22	Yes	2	7	55	No	Anodized Aluminum	00000000	000000
25	38	73	8	4	6	26	Yes	2	7	60	No	Anodized Aluminum	00000000	00000
32	50	80	10	4	7	35.5	Yes	4	7	64	No	Zinc-Plated Steel	00000000	00000
50	65	110	12	4	9	46.5	Yes	4	9	90	No	Zinc-Plated Steel	00000000	00000
63	75	120	12	4	9	56.5	Yes	4	9	100	No	Zinc-Plated Steel	00000000	00000

Clevis Brackets with Pin

	Pin							Mounting Holes
For Bore Size, mm	Dia., mm	Material	Wd., mm	Ht., mm	Dp., mm	Jaw Opening Wd., mm	Base Plate Thick., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material	Includes		Each
32	10	Steel	45	45	32	26	10	4	7	32.5	Yes	Zinc-Plated Steel	Four Washers, Two Snap Rings, One Pin	00000000	000000
50	12	Steel	65	65	40	32	12	4	9	46.5	Yes	Zinc-Plated Steel	Four Washers, Two Snap Rings, One Pin	00000000	00000
63	16	Steel	75	75	50	40	12	4	9	56.5	Yes	Zinc-Plated Steel	Four Washers, Two Snap Rings, One Pin	00000000	00000

Pivot Brackets

						Mounting Holes
For Bore Size, mm	For Pin Dia., mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thick., mm	No. of	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material		Each
20	8	35	35	29	8	4	22	Yes	Anodized Aluminum	00000000	000000
25	8	40	40	29	8	4	26	Yes	Anodized Aluminum	00000000	00000

Replacement Seal Kits

For Bore Size, mm	Includes		Each
20	Piston Seal, Rod Seal, Tube Gasket	00000000	00000
25	Piston Seal, Rod Seal, Tube Gasket	00000000	0000
25	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	00000000	0000
32	Piston Seal, Rod Seal, Tube Gasket	00000000	0000
32	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	00000000	00000
50	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	00000000	00000
63	Piston Seal, Rod Seal, Rod Wiper, Two Tube Seals	00000000	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.

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.

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

Air Cylinder with Fixed Cushion

Lg., mm							Air Inlet
Stroke	Retracted	Extended	Force @ 100 psi, lbs.	Environmental Rating	Air Cushion Type	Body Material	Pipe Size	Thread Size	Thread Type	Gender	Specifications Met		Each
Sensor Ready
25 mm Bore Size (40 mm Wd.)
10	71	65	76	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	__	M5 × 0.8 mm	Metric	Female	ISO 21287	0000000	000000
15	76	75	76	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	__	M5 × 0.8 mm	Metric	Female	ISO 21287	0000000	00000
20	81	85	76	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	__	M5 × 0.8 mm	Metric	Female	ISO 21287	0000000	00000
25	70	95	76	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	__	M5 × 0.8 mm	Metric	Female	ISO 21287	0000000	00000
32 mm Bore Size (47 mm Wd.)
10	60	70	124	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	00000
15	65	80	124	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	00000
20	70	90	124	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	00000
25	75	100	124	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	00000
40 mm Bore Size (55 mm Wd.)
10	61	71	194	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	000000
15	66	81	194	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	000000
20	71	91	194	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	000000
25	76	101	194	Fed. Std. Class 1,000, ISO Class 6	Fixed Cushion	Aluminum	1/8	__	BSPP	Female	ISO 21287	0000000	000000

Foot Brackets

					Base Mounting Holes				Top Mounting Holes
For Bore Size, mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thick., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Fasteners Included	Material		Each
25	23	22	40	4	2	7	26	No	2	6	26	Yes	Zinc-Plated Steel	00000000	00000

Pivot Brackets

Connect these mounts to an air cylinder to create linear, pivot, or arc movements. These mounts are compatible with ISO tie rod air cylinders.

Front or rear flanges are for straightforward, back-and-forth movements, such as opening a sliding door. These flanges mount to either end of your cylinder.

Pivot brackets and clevis brackets work together to allow the rear portion of cylinders to pivot back and forth. Use either with a rod clevis to create arcing movements, such as opening a swinging door. Rod clevises allow the front portion of cylinders to pivot.

Stainless steel mounts are more corrosion resistant than steel and aluminum for use in wet or damp environments.

						Mounting Hole
For Bore Size, mm	Pin Hole Dia., mm	Wd., mm	Ht., mm	Dp., mm	Base Plate Thick., mm	No. of	Dia., mm	Ctr.-to-Ctr., mm	Mounting Hardware Included	Material	Includes	Specifications Met		Each
32	10	48	48	32	10	4	6	32.5	Yes	Aluminum	Four Bolts	ISO 15552	00000000	000000
40	12	53	53	37	10	4	6	38	Yes	Aluminum	Four Bolts	ISO 15552	00000000	00000

Rod Ends

For Bore Size, mm	ID, mm	Lg., mm	Wd., mm	Material	Height		Each
20	8	48	14	Zinc-Plated Steel	24 mm	0000000	00000
25, 32	10	57	17	Zinc-Plated Steel	28 mm	0000000	00000

Rod End Nuts

For Bore Size, mm	Overall Dia., mm	ID, mm	Mounting Hardware Included	Material	Center Length	Gender		Each
20	20	9	No	Nickel-Plated Steel	36 mm	Female	0000000	00000
25, 32	20	9	No	Nickel-Plated Steel	38 mm	Female	0000000	0000