Airtac AIRTAC SC125-160 Standard Cylinder SC125X270
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X270 is a genuine double-acting standard air cylinder with a Ø125mm bore and 270mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke270 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X270
The SC125X270 is a double-acting pneumatic cylinder delivering a push force of 6136 N at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. With a 125 mm bore and a 270 mm stroke, this model falls well within the 1500 mm maximum standard stroke for this bore size, making it a standard catalog item. The cylinder features a robust 32 mm diameter piston rod with an M27x2 knuckle thread and PT1/2 port connections.
This tie-rod cylinder uses an adjustable pneumatic cushion (28 mm length) to decelerate the piston smoothly at the end of each stroke, reducing impact noise and vibration. The body length A is 203 mm, resulting in a total extended length of approximately 473 mm. As a genuine AirTAC SC series component, it is built for reliable industrial service with a standard TPU seal operating comfortably between -20 and +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X270 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X270 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 270 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 SC125X270
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×270 | 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 SC125X270 Is Used
Heavy-Duty Clamping & Pressing
With 11045 N of force at 0.9 MPa, the SC125X270 is ideal for industrial clamping fixtures, assembly presses, and static holding operations where high force in a compact tie-rod format is essential.
Material Lifting & Hopper Gates
The 270 mm stroke and 6136 N push force at 0.5 MPa suit it for actuating heavy hopper discharge gates, lifting arms, and diverter chutes in bulk material handling systems.
Tie-Rod Retrofit & OEM Machinery
A direct replacement for legacy tie-rod cylinders on older machinery, the SC125X270 maintains the same footprint and porting, avoiding costly machine frame modifications during an upgrade.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X270 the Right Cylinder?
Select the SC125 bore when your application requires a push force in the 6136 N class at standard plant air pressure. If your load is lighter, stepping down to the SC100 bore (3927 N at 0.5 MPa) can reduce air consumption and physical size. For any stroke over 300 mm, or when side loads are present, evaluate the rod bearing's bending moment capacity; a 32 mm rod is strong, but external guide rails or a guided cylinder are recommended to protect the rod and seals from lateral forces.
When replacing an existing cylinder, ensure a precise 5-point match: identical 125 mm bore, 270 mm stroke, PT1/2 port thread, basic (no bracket) mounting configuration, and the absence of a built-in magnet. This SC model is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders; it is an ISO 6430 class cylinder.
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 SC125X270 FAQ
At the standard operating pressure of 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 11045 N. The theoretical maximum force at 1.0 MPa is 1251 kgf.
No, it is not a drop-in replacement. The AirTAC SC series is a tie-rod cylinder that is physically shorter than an equivalent ISO 15552 profile cylinder. It is an ISO 6430 class cylinder. The mounting dimensions, body length, and accessory brackets are different. It should only replace another AirTAC SC tie-rod cylinder or a cylinder with identical tie-rod dimensions.
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