The AirTAC Airtac SC40 Standard Cylinder SC40X70STC is a genuine double-acting standard air cylinder with a Ø40mm bore and 70mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X70STC is a double-acting tie-rod cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 40 mm bore and 70 mm stroke suit compact linear tasks where a 16 mm diameter piston rod provides good rigidity for short-travel pushing, clamping, or lifting.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, plus a TC centre trunnion mount (F-SC40TC) supplied with the TCM1 bracket. The trunnion allows the cylinder to pivot around its centre of gravity, making it ideal for swinging or articulating mechanisms. Ports are PT1/4 with an M12x1.25 rod thread, and the adjustable air cushion (21 mm length) decelerates the piston smoothly at end of stroke.
| Model | Airtac SC40 Standard Cylinder SC40X70STC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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. |
| ×70 | 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 centre trunnion mount lets the SC40X70STC pivot to divert small packages or components on a conveyor line. The 628 N push force at 0.5 MPa is ample for lightweight gate actuation, and the built-in magnet confirms gate position via barrel-mounted sensors.
With 1130 N of force at 0.9 MPa and a rigid 16 mm rod, this cylinder provides secure workpiece clamping on CNC fixtures or assembly jigs. The adjustable cushion prevents impact shock that could disturb part alignment.
The TC trunnion mount enables free pivoting, making this cylinder a direct fit for lever arms, toggle mechanisms, and oscillating machine elements. Sensor feedback from the -S magnet confirms end-of-travel without external flags.
Choose the SC40 bore when your application needs 628 N at 0.5 MPa—stepping up to the SC50 delivers 982 N, while the SC32 provides 402 N for lighter loads. The 70 mm stroke is a standard length, keeping lead times short.
For replacement, match five points exactly: 40 mm bore, 70 mm stroke, PT1/4 ports, TC centre trunnion mounting, and the built-in magnet for sensor compatibility. The SC is a tie-rod design, shorter than an ISO 15552 cylinder, so dimensional interchangeability is limited to other AirTAC SC40 tie-rod units with the same configuration.
Quick checklist
At 0.5 MPa air pressure, the push force is 628 N and the pull force is 528 N. At the maximum operating pressure of 0.9 MPa, push force reaches 1130 N. The theoretical maximum at 1.0 MPa is 128 kgf.
No. The SC40X70STC is a double-acting pneumatic cylinder—it does not lock or hold position when pressure is exhausted or the directional valve is centred. If load holding is required, add an external rod brake, pilot-operated check valve, or mechanical lock.
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