The AirTAC Airtac SC40 Standard Cylinder SC40X280S is a genuine double-acting standard air cylinder with a Ø40mm bore and 280mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X280S is a double-acting single-rod pneumatic cylinder delivering 628 N of push force at 0.5 MPa and up to 1130 N at 0.9 MPa. With a 40 mm bore and 280 mm stroke, this model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors along the tie-rod barrel, eliminating the need for external switch brackets.
Its 16 mm diameter piston rod and PT1/4 ports suit general automation tasks. The adjustable air cushion at each end (21 mm cushion length) decelerates the piston smoothly, reducing end-of-stroke impact. The body length A is 142 mm, giving a total extended length of approximately 422 mm. This cylinder is a genuine AirTAC SC tie-rod design, shorter than an ISO 15552 profile and not dimensionally interchangeable with it.
| Model | Airtac SC40 Standard Cylinder SC40X280S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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. |
| ×280 | 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 built-in magnet allows CMSG/DMSG sensors to confirm clamp position in automated CNC fixtures, ensuring the 40 mm bore cylinder has fully extended or retracted before the next machining cycle begins.
With 628 N of push force at 0.5 MPa, this cylinder reliably actuates part stops on light-to-medium conveyor lines. The magnetic piston enables end-of-stroke sensing for precise sequencing with upstream and downstream equipment.
The 280 mm stroke provides sufficient reach for pushing cartons or products into packaging stations. The adjustable cushioning protects the cylinder and product from shock, while sensors verify each push cycle is complete.
Choose the SC40 bore when your application needs between 528 N (pull) and 628 N (push) at 0.5 MPa. If you require higher force, step up to the SC50 which provides 982 N push at the same pressure. For lower force and a lighter assembly, the SC32 delivers 402 N push. The 280 mm stroke is well within the 1200 mm maximum standard stroke for the 40 mm bore.
For strokes of 300 mm and above, consider external guides or a guided cylinder if side loads are present, as the 16 mm rod can experience bending under unsupported lateral forces. When replacing an existing cylinder, match five points: bore (40 mm), stroke (280 mm), port thread (PT1/4), the built-in magnet (-S), and the basic mounting style.
Quick checklist
At 0.5 MPa the cylinder produces 628 N extending (push) and 528 N retracting (pull). At the maximum operating pressure of 0.9 MPa, the push force increases to 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The AirTAC SC series is a tie-rod cylinder that is physically shorter than an ISO 15552 profile cylinder, so the mounting dimensions and body length do not match. It is a direct replacement only for another AirTAC SC40 tie-rod cylinder or a compatible tie-rod design with identical bore, stroke, port thread, and mounting.
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