The AirTAC Airtac SC40 Standard Cylinder SC40X155S is a genuine double-acting standard air cylinder with a Ø40mm bore and 155mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X155S is a double-acting pneumatic cylinder with a 40 mm bore and 155 mm stroke, factory-equipped with a built-in magnet. At 0.5 MPa it produces 628 N extending and 528 N retracting, making it a solid mid-range actuator for light automation tasks. The 16 mm diameter piston rod and PT1/4 ports suit compact machine layouts.
This model includes the -S magnet option, allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position sensing. The adjustable air cushion at each end decelerates the piston over 21 mm to reduce end-of-stroke impact, while the standard TPU seals cover a temperature range of -20 to +70 °C.
| Model | Airtac SC40 Standard Cylinder SC40X155S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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. |
| ×155 | 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.
Actuates a diverter flap on a conveyor line. The built-in magnet provides end-of-stroke confirmation to the PLC, ensuring packages are routed correctly every cycle.
Applies consistent 628 N clamping force to hold small parts during drilling or assembly. The adjustable cushion protects the fixture from hammering at full extension.
Drives a syringe-style dosing pump. The magnetic piston allows the control system to verify the full 155 mm stroke is completed, critical for accurate fluid volumes.
For applications needing slightly more force, stepping up to the 50 mm bore SC50 series provides 982 N at the same 0.5 MPa pressure. If space is tight and force can be reduced, the 32 mm bore SC32 delivers 402 N. The 155 mm stroke is within the 1200 mm maximum standard stroke for this bore.
When replacing an existing cylinder, match five points: 40 mm bore, 155 mm stroke, PT1/4 port thread, the built-in magnet (-S suffix), and the basic mounting configuration. For strokes above 300 mm on this rod size, consider an external guide to protect the 16 mm rod from bending under side load.
Quick checklist
At the standard 0.5 MPa operating pressure, the extending (push) force is 628 N and the retracting (pull) force is 528 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 1130 N.
Yes. The -S suffix in the model code indicates a built-in magnet on the piston. This lets you attach AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors directly to the tie-rod barrel to detect piston position without external brackets.
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