Airtac AIRTAC SC125-160 Standard Cylinder SC125X250
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X250 is a genuine double-acting standard air cylinder with a Ø125mm bore and 250mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke250 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X250
The SC125X250 is a double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa, scaling up to 11045 N at the maximum operating pressure of 0.9 MPa. Its 32 mm diameter piston rod and 28 mm air cushion length make it suitable for heavy linear actuation tasks requiring controlled end-of-stroke deceleration.
With a 250 mm stroke and a compact body length A of 203 mm, this model fits into machinery where space is limited but high force is non-negotiable. It belongs to the ISO 6430 class of tie-rod cylinders, offering robust construction with PT1/2 ports and an M27x2 rod thread for secure tooling attachment.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X250 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X250 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 250 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 SC125X250
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×250 | 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 SC125X250 Is Used
Heavy-Duty Clamping
Applies up to 11045 N of clamping force at 0.9 MPa for securing large workpieces during machining or welding operations.
Pallet Transfer Systems
Provides the high push force needed to move heavy pallets or transfer carriages across roller conveyors in logistics hubs.
Industrial Press Feed
Actuates material feeding mechanisms in stamping presses, reliably pushing thick sheet metal or composite blanks into position.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X250 the Right Cylinder?
For applications needing slightly less force, stepping down to the SC100 bore reduces push force to 3927 N at 0.5 MPa. The SC125X250 is a standard-stroke model within the 1500 mm maximum for this bore. When replacing an existing cylinder, match five key points: 125 mm bore, 250 mm stroke, PT1/2 port thread, basic mounting configuration, and the absence of a built-in magnet.
At this stroke length, ensure the rod is not subjected to significant side loads. For off-axis forces, use an external linear guide or consider a guided cylinder variant to prevent rod bending and premature bearing wear.
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 SC125X250 FAQ
At 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 reaches 11045 N. The theoretical maximum force at 1.0 MPa is 1251 kgf.
No. The SC series is a tie-rod cylinder and is dimensionally shorter than an ISO 15552 profile cylinder. It is not a drop-in replacement. Only replace with another AirTAC SC tie-rod cylinder or a cylinder with identical bore, stroke, port size, and mounting dimensions.
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