Airtac SC50 Standard Cylinder SC50X1270S
The AirTAC Airtac SC50 Standard Cylinder SC50X1270S is a genuine double-acting standard air cylinder with a Ø50mm bore and 1270mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ50 mm
- Stroke1270 mm
- Port sizePT1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SC50 Standard Cylinder SC50X1270S
The AirTAC SC50X1270S is a double-acting single-rod pneumatic cylinder with a 50 mm bore and a non-standard 1270 mm stroke, exceeding the standard 1200 mm maximum for this bore size. It delivers a theoretical push force of 982 N at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa, making it suitable for long linear movements requiring consistent mid-range force.
This model features a built-in magnet (-S suffix) that allows direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod barrel for contactless position sensing. The piston rod has a 20 mm diameter with an M16x1.5 thread, and the adjustable air cushion at both ends is 21 mm long, providing smooth deceleration even on this extended stroke.
Airtac SC50 Standard Cylinder SC50X1270S Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X1270S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 1270 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 SC50X1270S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×1270 | 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 SC50X1270S Is Used
Long-Stroke Material Pusher
The 1270 mm stroke is ideal for pushing products across wide conveyor merges or transfer stations, with the built-in magnet enabling precise end-of-stroke and mid-stroke position confirmation via sensors.
Automated Spray Boom Actuation
Provides the extended reach needed to move spray nozzles or sensor arrays across a wide treatment area in agricultural or industrial coating equipment, with adjustable cushioning for smooth stops.
Vertical Pallet Lifter
Delivers 1767 N of push force at 0.9 MPa to raise pallets in a compact lift station. The long stroke requires an external guide rail system to maintain stability under offset loads.
Is the Airtac SC50 Standard Cylinder SC50X1270S the Right Cylinder?
For applications needing a 50 mm bore, this model provides a push force of 982 N at 0.5 MPa. If higher force is required, stepping up to a 63 mm bore increases the push force to 1559 N at the same pressure. When specifying a replacement, ensure an exact match across five points: 50 mm bore, 1270 mm stroke, PT port thread, the built-in magnet for sensors, and the basic mounting configuration.
With a stroke of 1270 mm, the unsupported rod length is significant. Any side load, even minor, can cause the rod to bend or the bearing to wear prematurely. For this stroke length, it is critical to use an external linear guide or a self-guided actuator to support the load and protect the cylinder rod from bending moments.
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 SC50X1270S FAQ
The theoretical push force on the piston is 982 N at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa. The pull force on the rod side is lower due to the 20 mm rod diameter, providing 825 N at 0.5 MPa.
A stroke of 1270 mm on a 20 mm diameter rod is highly susceptible to buckling and side-load bending. You must guide the load externally with a linear rail or rodless actuator. The cylinder itself should only provide push/pull force, not support the weight or moment of the load.
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