Airtac SC50 Standard Cylinder SC50X1250
The AirTAC Airtac SC50 Standard Cylinder SC50X1250 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 SC50X1250
The AirTAC SC50X1250 is a double-acting tie-rod cylinder with a 50 mm bore and a non-standard 1250 mm stroke, exceeding the standard maximum of 1200 mm for this bore size. It generates 982 N of push force and 825 N of pull force at 0.5 MPa, rising to 1767 N push at the maximum operating pressure of 0.9 MPa.
This model features a 20 mm diameter piston rod with an M16x1.5 thread and a 21 mm adjustable air cushion at each end to decelerate the piston smoothly. The body length A is 150 mm, giving a total extended length of approximately 1400 mm. It uses a PT1/4 port and operates on filtered air from 0.15 to 1.0 MPa.
Airtac SC50 Standard Cylinder SC50X1250 Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X1250 |
|---|---|
| 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 SC50X1250
| 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 SC50X1250 Is Used
Long-Reach Material Pushing
Ideal for ejecting or pushing products off a wide conveyor line where a long, linear stroke is needed to traverse the full belt width.
Vertical Panel Pressing
Suitable for a vertically mounted press that requires a long approach stroke to clamp large, deep parts with a controlled force of up to 1767 N.
Grain Chute Diverter Gate
Operates a large diverter gate in agricultural handling equipment, using its long stroke to fully open or close a chute from a remote position.
Is the Airtac SC50 Standard Cylinder SC50X1250 the Right Cylinder?
Choose the SC50X1250 when your application needs a push force around 982 N at standard plant pressure. If you require more force, stepping up to the 63 mm bore provides 1559 N at the same 0.5 MPa. For a lower force requirement, the 40 mm bore offers 628 N. This cylinder is a genuine AirTAC component; to ensure a correct replacement, match five key points: 50 mm bore, 1250 mm stroke, PT port thread, basic mounting (no bracket), and the absence of a magnet.
Because the 1250 mm stroke is very long for a 20 mm rod, the extended rod is susceptible to bending under side loads. It is critical to ensure the load is guided externally and aligned axially with the rod, or to use an external guide system, to prevent damage to the rod bearing and seal.
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 SC50X1250 FAQ
At 0.7 MPa operating pressure, the SC50X1250 produces a theoretical push force of 1374 N. The pull force on the retract stroke at the same pressure is lower due to the rod area.
No. The AirTAC SC series is a tie-rod cylinder and is shorter in overall length than an ISO 15552 profile cylinder. It is not dimensionally interchangeable. It should only replace another AirTAC SC tie-rod cylinder with matching bore, stroke, port, and mounting specifications.
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