Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S is a genuine double-acting standard air cylinder with a Ø125mm bore and 900mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke900 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S
The SC125X900S is a double-acting single-rod pneumatic cylinder delivering 6136 N push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. With a 125 mm bore and 900 mm stroke, this model features a 32 mm piston rod, PT1/2 ports, and a 28 mm adjustable air cushion at each end to decelerate the piston smoothly.
This variant includes the -S suffix, equipping the cylinder with a built-in magnet along the barrel. This allows easy, non-invasive mounting of CMSG, DMSG, or EMSG reed and solid-state sensors directly onto the tie-rod tube for precise end-of-stroke or mid-stroke position sensing. The standard TPU seals provide a reliable operating temperature range of -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 900 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (approx.) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×900 | 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 AIRTAC SC125-160 Standard Cylinder SC125X900S Is Used
Pallet Stop & Lift
Heavy-duty pallet stopping and lifting stations in conveyor systems, where the 6136 N push force at 0.5 MPa easily handles loaded pallets, and the magnet enables sensor feedback for automated sequencing.
Press & Clamping Fixtures
Industrial pressing, riveting, or clamping fixtures requiring up to 11045 N of force. The adjustable cushioning protects tooling at the end of the 900 mm stroke, while the built-in magnet confirms clamp position.
Material Handling Pushers
Pushing heavy bins or cartons off a main line onto a spur. The long 900 mm stroke provides the necessary reach, and the sensor-ready barrel ensures the pusher is fully retracted before the next cycle begins.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X900S the Right Cylinder?
Select the SC125 bore when your application requires a push force between 6136 N and 11045 N. If your load is lighter, stepping down to the SC100 bore reduces air consumption while still providing 3927 N at 0.5 MPa. For a 900 mm stroke, ensure the rod is not subjected to significant side loads; an unsupported 32 mm rod at full extension can bend under lateral force. In such cases, use an external linear guide or a guided cylinder to protect the rod bearings and seals.
For a direct replacement, match five key points: 125 mm bore, 900 mm stroke, PT1/2 port thread, the basic mounting style (no integrated bracket), and the built-in magnet (-S) for sensor compatibility. This is a tie-rod cylinder 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 AIRTAC SC125-160 Standard Cylinder SC125X900S FAQ
At 0.7 MPa operating pressure, the theoretical push force is 8590 N. The pull force on the retract stroke at the same pressure is 5734 N, accounting for the area of the 32 mm rod.
No. The AirTAC SC series is a tie-rod cylinder with a shorter overall body length than an ISO 15552 profile cylinder. It is not dimensionally interchangeable. For a correct replacement, use another AirTAC SC125 cylinder or a tie-rod cylinder with identical bore, stroke, port thread, and mounting dimensions.
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