Airtac SC50 Standard Cylinder SC50X140H
The AirTAC Airtac SC50 Standard Cylinder SC50X140H is a genuine double-acting standard air cylinder with a Ø50mm bore and 140mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke140 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X140H
The SC50X140H is a double-acting pneumatic cylinder from the AirTAC SC tie-rod series, combining a 50 mm bore with a 140 mm stroke. It generates 982 N of push force and 825 N of pull force when supplied with 0.5 MPa air, making it a capable mid-range actuator for industrial automation.
This variant is fitted with Viton (FKM) seals, extending the operating temperature range to 0–150 °C for hot or chemically aggressive environments. The piston rod is 20 mm in diameter with an M16x1.5 male thread, and the cylinder features a 21 mm adjustable air cushion at each end to decelerate the piston smoothly.
Airtac SC50 Standard Cylinder SC50X140H Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X140H |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SC50 Standard Cylinder SC50X140H
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×140 | 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 SC50 Standard Cylinder SC50X140H Is Used
Autoclave & Sterilisation
Viton seals withstand 150°C steam cycles, making this cylinder suitable for actuating doors, clamps, or ejectors inside autoclaves and sterilisation tunnels.
Hot-Material Conveyor Gates
Diverts or stops product on conveyors carrying hot materials. The 140 mm stroke provides sufficient travel for medium-width gate or diverter mechanisms.
Mould Clamping (Hot Runner)
Actuates small sliding cores or hot-runner valve pins in injection moulds where mould temperatures exceed 70°C, beyond the range of standard TPU seals.
Is the Airtac SC50 Standard Cylinder SC50X140H the Right Cylinder?
The 50 mm bore sits between the 40 mm (628 N push) and 63 mm (1559 N push) frames. If your load requires more than ~800 N of consistent thrust, step up to the 63 mm bore to gain headroom and reduce cycle times. For lighter, faster-moving loads under 500 N, the 40 mm bore saves space and air consumption.
To ensure a direct drop-in replacement, match five key points: 50 mm bore, 140 mm stroke, PT port thread, Viton seal material, and the basic (no accessory) mounting configuration. The SC is a tie-rod cylinder with a shorter body than an ISO 15552 profile; it will only interchange with another AirTAC SC50 of the same stroke and options.
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 SC50 Standard Cylinder SC50X140H FAQ
At 0.7 MPa supply pressure, the SC50X140H produces 1374 N of push force and 1155 N of pull force (calculated from the 0.5 MPa pull ratio). The maximum operating thrust at 0.9 MPa is 1767 N push.
No. The SC50X140H is a double-acting cylinder and will drift or drop its load if pressure is exhausted or the directional valve is centred. For load holding without live pressure, you must add an external rod brake, a pilot-operated check valve, or use a mechanically locked cylinder.
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