Airtac AIRTAC SC125-160 Standard Cylinder SC125X550
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X550 is a genuine double-acting standard air cylinder with a Ø125mm bore and 550mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke550 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X550
This SC125X550 double-acting pneumatic cylinder delivers a substantial push force of 6136 N at 0.5 MPa (up to 11045 N at 0.9 MPa), making it a workhorse for heavy linear actuation. The 125 mm bore uses a rigid 32 mm diameter piston rod with an M27x2 knuckle thread and an adjustable air cushion of 28 mm to decelerate high-inertia loads smoothly.
The 550 mm stroke operates within the standard 1500 mm maximum for this bore, and the tie-rod construction keeps the overall extended length compact at approximately 753 mm (body length A of 203 mm plus stroke). PT1/2 ports supply the filtered air, and the standard TPU seals cover a temperature range of -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X550 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X550 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 550 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 SC125X550
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×550 | 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 SC125X550 Is Used
Heavy Material Handling
Operates lift tables, upenders, and transfer carts. The 6136 N push force at standard line pressure easily manages heavy pallets and industrial containers.
Press & Clamping Fixtures
Delivers up to 11045 N of clamping force at 0.9 MPa for holding large weldments, composite layups, or heavy machining fixtures securely in place.
Agricultural Machinery Actuation
Controls chutes, diverters, and large gates on harvesters or processing lines. The tie-rod design and TPU seals handle dusty, wet environments reliably.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X550 the Right Cylinder?
For applications needing slightly less force, stepping down to the 100 mm bore reduces push force to 3927 N at 0.5 MPa. If your load demands more, the 160 mm bore provides 10053 N at the same pressure. Always match the port thread (PT1/2), 32 mm rod, and mounting style when replacing an existing cylinder.
At a 550 mm stroke, ensure the rod is protected from significant side loads. While the 32 mm rod is robust, off-axis forces can cause bending or premature bearing wear. Consider adding an external linear guide or switching to a guided cylinder if side loads are unavoidable. A direct replacement must match bore, stroke, PT port, and any mounting accessories.
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 SC125X550 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, push force reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The AirTAC SC series is a tie-rod cylinder that is shorter than an ISO 15552 profile cylinder, so it is not dimensionally interchangeable. The 125 mm bore is classified as an ISO 6430 class tie-rod cylinder. It directly replaces another AirTAC SC125 cylinder with the same stroke, PT port, and mounting.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac AIRTAC SC125-160 Standard Cylinder SC125X550
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.