Airtac SC40 Standard Cylinder SC40X120S
The AirTAC Airtac SC40 Standard Cylinder SC40X120S is a genuine double-acting standard air cylinder with a Ø40mm bore and 120mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ40 mm
- Stroke120 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 mm
About the Airtac SC40 Standard Cylinder SC40X120S
The AirTAC SC40X120S is a double-acting tie-rod cylinder with a 40 mm bore and 120 mm stroke, equipped with a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors. At 0.5 MPa air pressure it generates 628 N of push force and 528 N on the pull stroke, making it a capable mid-range actuator for automated equipment.
This model uses a 16 mm diameter piston rod with an M12x1.25 male thread and PT1/4 ports. The adjustable air cushion at each end is 21 mm long, and the body length A is 142 mm, giving a total extended length of approximately 262 mm. TPU seals provide a standard operating temperature range of -20 to +70 °C.
Airtac SC40 Standard Cylinder SC40X120S Technical Specifications
| Model | Airtac SC40 Standard Cylinder SC40X120S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac SC40 Standard Cylinder SC40X120S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×120 | 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.
Where the Airtac SC40 Standard Cylinder SC40X120S Is Used
Package Sorting Gate
The 120 mm stroke and magnetic piston allow precise mid-stroke sensing to divert cartons of different sizes on a powered roller conveyor.
Clamping & Fixturing
628 N of force securely holds parts during CNC machining or welding. The magnet confirms the clamp is fully extended before the cycle starts.
Press-Fit Assembly
Ideal for small bearing or bushing insertion stations where the 120 mm stroke provides enough travel and the sensor verifies full insertion depth.
Is the Airtac SC40 Standard Cylinder SC40X120S the Right Cylinder?
Choose the SC40 bore when your load requires between roughly 500 and 850 N of force at typical shop air pressures. If you need more force, stepping up to the SC50 bore delivers 982 N push at 0.5 MPa; if you need a more compact cylinder, the SC32 provides 402 N. The built-in magnet (suffix -S) allows you to clamp reed or solid-state sensors directly onto the barrel for end-of-stroke or mid-stroke position feedback.
For replacement, match five points: 40 mm bore, 120 mm stroke, PT1/4 port thread, the built-in magnet option, and your required mounting accessory (this model is supplied as a basic cylinder without brackets). The SC is a tie-rod design and is not dimensionally interchangeable with ISO 15552 profile cylinders.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SC40 Standard Cylinder SC40X120S FAQ
At 0.5 MPa (5 bar) the cylinder produces 628 N extending and 528 N retracting. At the maximum operating pressure of 0.9 MPa, the extending force rises to 1130 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
Yes. The -S suffix means a magnet is built into the piston. You can clamp AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors directly onto the barrel tie-rods to detect piston position without any additional brackets.
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