Airtac SC50 Standard Cylinder SC50X1250S
The AirTAC Airtac SC50 Standard Cylinder SC50X1250S 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 SC50X1250S
The AirTAC SC50X1250S is a double-acting tie-rod cylinder with a 50 mm bore and an extended 1250 mm stroke, which exceeds the standard 1200 mm maximum for this bore, making it a non-standard, made-to-order configuration. At 0.9 MPa operating pressure it generates 1767 N of push force, and its 20 mm diameter piston rod with M16x1.5 male thread provides robust linear actuation for long-travel applications.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors along the barrel for reliable end-of-stroke or mid-stroke position feedback. The cylinder body length A is 150 mm, giving a total extended length of approximately 1400 mm, and it features an adjustable pneumatic cushion (21 mm length) to decelerate the piston smoothly at both ends of travel.
Airtac SC50 Standard Cylinder SC50X1250S Technical Specifications
| Model | Airtac SC50 Standard Cylinder SC50X1250S |
|---|---|
| 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 SC50X1250S
| 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 SC50X1250S Is Used
Long-Stroke Material Transfer
Moves parts or tools across a 1250 mm distance in automated assembly cells, with magnetic sensors confirming full extension and retraction to the PLC.
Conveyor Gate or Diverter
Operates a long-travel gate or lane diverter on a conveyor line, using the 1767 N push force to shift packages reliably while sensors verify gate position.
Pallet Dispenser Pusher
Pushes stacks of empty pallets or slip sheets in a warehouse dispenser, where the 1250 mm stroke covers the full pallet depth and the magnet enables end-of-travel detection.
Is the Airtac SC50 Standard Cylinder SC50X1250S the Right Cylinder?
Select the SC50X1250S when your application needs a 1250 mm stroke with position sensing. If 982 N of push force at 0.5 MPa is insufficient, consider stepping up to the 63 mm bore (SC63 series, 1559 N at 0.5 MPa); if the force is more than needed and you can accept a shorter maximum stroke, the 40 mm bore (SC40 series, 628 N at 0.5 MPa) offers a more compact alternative. For this 1250 mm stroke, the unsupported rod is highly susceptible to bending under side loads; use an external linear guide or a guided cylinder to protect the rod bearing and ensure long service life.
For a direct replacement, match five key specifications: 50 mm bore, 1250 mm stroke, PT1/4 port thread, the built-in magnet for sensor compatibility, and the basic (no bracket) mounting configuration. This cylinder 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 SC50 Standard Cylinder SC50X1250S FAQ
At 0.5 MPa (5 bar) the cylinder delivers 982 N pushing and 825 N pulling. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf.
The 1250 mm stroke is non-standard (the standard maximum for 50 mm bore is 1200 mm), so it is a made-to-order item. The -S suffix means it has a built-in magnet; AirTAC CMSG (reed) and DMSG/EMSG (solid-state) sensors clamp directly onto the barrel for position sensing.
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