Airtac SC50 Standard Cylinder SC50X1250SH
The AirTAC Airtac SC50 Standard Cylinder SC50X1250SH is a genuine double-acting standard air cylinder with a Ø50mm bore and 1250mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke1250 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X1250SH
The AirTAC SC50X1250SH is a double-acting tie-rod cylinder engineered for long-stroke applications in high-temperature environments. With a 50mm bore and a non-standard 1250mm stroke, it delivers 982 N of push force at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa, driven by a 20mm diameter piston rod.
This model is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and high-temperature Viton (FKM) seals (-H), extending the operating range to 0 to +150°C. The port thread is PT1/4, the adjustable air cushion is 21mm, and the body length A is 150mm. As a genuine AirTAC component, it provides reliable hot-zone actuation for demanding industrial tasks.
Airtac SC50 Standard Cylinder SC50X1250SH Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X1250SH |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 1250 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 SC50X1250SH
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×1250 | 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 SC50X1250SH Is Used
High-Temperature Process Automation
With Viton seals rated for 0 to +150°C, this cylinder is ideal for actuating dampers, gates, or diverters near furnaces, ovens, and autoclaves where standard seals would degrade.
Long-Reach Part Transfer
The 1250mm stroke enables extended linear movement for pushing or pulling parts between distant conveyor lines or into deep processing stations, with sensor feedback via the built-in magnet.
Hot-Mold Ejection Systems
Delivers 1767 N of push force at 0.9 MPa to reliably eject parts from heated molds in plastic injection or rubber vulcanization presses, maintaining performance in sustained high-heat environments.
Is the Airtac SC50 Standard Cylinder SC50X1250SH the Right Cylinder?
Select the SC50 bore when your application requires a force class around 982 N at 0.5 MPa. If you need more force, stepping up to the SC63 bore provides 1559 N at the same pressure. For lower force requirements, the SC40 bore delivers 628 N. This cylinder has a non-standard 1250mm stroke, which exceeds the 1200mm maximum standard stroke for a 50mm bore, making it a made-to-order item.
For any stroke of 300mm or more, and especially at 1250mm, side loads become a critical concern. The 20mm rod is susceptible to bending under lateral force; always use an external linear guide or a self-guided actuator to isolate the rod from non-axial loads. When replacing, match the 50mm bore, 1250mm stroke, PT1/4 port, built-in magnet (-S), and Viton seals (-H) to ensure a correct fit.
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 SC50X1250SH FAQ
The theoretical push force at 0.5 MPa is 982 N, and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N. The maximum theoretical force at 1.0 MPa is 200 kgf.
A 1250mm stroke with a 20mm rod creates a high risk of bending under side loads. You must guide the load externally with a linear rail or rod-less guide system. The adjustable air cushion only decelerates the piston at the stroke end; it does not lock or hold the position. For holding a load without pressure, an external rod brake or pilot-operated check valve is required.
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