The AirTAC Airtac SC40 Standard Cylinder SC40X400 is a genuine double-acting standard air cylinder with a Ø40mm bore and 400mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X400 is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, pairing a 40 mm bore with a 400 mm stroke. At 0.5 MPa it provides 628 N push force and 528 N pull force, rising to 1130 N push at the maximum operating pressure of 0.9 MPa. The 16 mm diameter piston rod and 21 mm adjustable air cushion work together to handle mid-range linear tasks with reliable end-of-stroke deceleration.
This 400 mm stroke model falls well within the 1200 mm maximum standard stroke for the 40 bore, making it a standard catalog item. The cylinder body length A is 142 mm, giving a total extended length of approximately 542 mm. Ports are PT1/4 and the rod thread is M12x1.25. The default TPU seal operates from -20 to +70 °C with filtered air at 0.15-1.0 MPa.
| Model | Airtac SC40 Standard Cylinder SC40X400 |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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. |
| ×400 | 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 400 mm stroke provides enough reach to push cartons or totes off a conveyor line onto a spur. The 21 mm air cushion absorbs impact at the end of stroke, keeping the diverter mechanism quiet and reliable.
With 628 N of clamping force at 0.5 MPa, this cylinder suits medium-duty welding jigs and assembly fixtures. The tie-rod construction allows easy field maintenance and seal replacement.
Used to tilt bins or hoppers for part presentation. The 400 mm stroke provides the linear travel needed to rotate a bin through a 45-60 degree arc via a simple lever mechanism.
Select the SC40 bore when your application needs between roughly 500 and 900 N of force at typical shop air pressure. If you need more force, stepping up to the SC50 bore gives 982 N push at 0.5 MPa; for a lighter, more compact solution the SC32 bore offers 402 N. Always match the replacement cylinder on all five key points: bore, stroke, PT1/4 port thread, basic (no mounting accessory), and the absence of a magnet.
At 400 mm of stroke, the 16 mm rod is long enough that any side load can cause rod deflection and premature bearing wear. For applications where the load is not perfectly guided in-line with the rod axis, add an external linear guide or consider a guided cylinder to protect the rod bearing and seal.
Quick checklist
At 0.7 MPa (7 bar) the SC40 bore produces 879 N of push force and 739 N of pull force. The maximum operating pressure is 1.0 MPa, giving 1256 N push. These figures are for a double-acting cylinder; force drops if the rod is under side load.
Yes, provided the old cylinder matches on bore (40mm), stroke (400mm), port thread (PT1/4), rod thread (M12x1.25), and mounting style (basic, no bracket). The SC is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders. Check your centre-to-centre tie-rod spacing and body length (142 mm + stroke) before ordering.
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