The AirTAC Airtac SC Standard Cylinders SC40X350T is a genuine double-acting standard air cylinder with a Ø40mm bore and 350mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X350T is a double-acting tie-rod cylinder with NPT 1/4 in tapered ports, built for North-American pipe-thread plumbing. The 40 mm bore delivers about 628 N pushing at 0.5 MPa and 879 N at 0.7 MPa, and the 350 mm stroke covers medium-reach duties such as ejecting parts from deep fixtures or indexing a sliding table. The 16 mm rod carries a M12x1.25 knuckle thread, and each end chamber gets a 21 mm adjustable cushion to soften piston deceleration near stroke end. With the body length A at 142 mm, the fully extended length is roughly 492 mm, so check your envelope before ordering.
| Model | Airtac SC Standard Cylinders SC40X350T |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 350 mm stroke reaches the bottom of deep forming dies to kick out stamped brackets, while 628 N at 0.5 MPa clears parts that gravity alone leaves stuck.
On a packaging line, the cylinder pushes boxes across a belt at 30-800 mm/s; the 21 mm cushions stop the piston slam at full extension after a fast 350 mm travel.
Raising an interlocked safety gate of moderate weight suits the 40 mm bore; remember the SC does not hold position if air is lost, so fit a pilot-operated check valve or mechanical latch.
Size both ways: the next bore down, SC32, gives only about 402 N at 0.5 MPa, while the next bore up, SC50, reaches about 982 N. If your load sits near 60 kgf equivalent at 0.5 MPa with margin, the 40 mm bore is the efficient choice; step up to 50 if side load or friction eats into the budget. At 350 mm stroke the unsupported rod bends under side load, so add an external guide rail or specify a guided cylinder if the load is not rigidly carried. Because this is the T variant, confirm your plumbing first: the NPT 1/4 ports seal on the thread taper and suit existing North-American fittings and manifolds. Match five points when replacing another SC or tie-rod cylinder: bore, stroke, port thread (NPT here, not PT or G), mounting accessory code, and the -S magnet suffix if you use CMSG sensors.
Quick checklist
At 0.5 MPa the 40 mm bore pushes about 628 N and pulls about 528 N. At 0.7 MPa push rises to about 879 N, and at the 0.9 MPa operating ceiling it reaches about 1130 N. The theoretical maximum is 128 kgf at 1.0 MPa. If your load needs more, the SC50 bore delivers about 982 N at 0.5 MPa in the same tie-rod format.
Only if your plumbing is imperial. The SC40X350T uses NPT 1/4 tapered ports that seal on the thread itself, which is the North-American standard; the plain SC40 uses PT (Rc) tapered ports. A direct NPT-to-PT swap on the same fittings risks weeping joints. Match bore, stroke, port thread, mounting accessory and magnet (-S) for a true replacement.
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