Airtac AIRTAC SC125-160 Standard Cylinder SC125X550TC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X550TC 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 SC125X550TC
The AirTAC SC125X550TC is a double-acting pneumatic cylinder delivering 6136 N of push force at 0.5 MPa (11045 N at the 0.9 MPa maximum operating pressure). With a 125 mm bore and 550 mm stroke, it handles demanding linear actuation tasks where high force and a pivoting mount are required. The 32 mm diameter piston rod and 28 mm adjustable air cushion provide robust, controlled motion.
This model is supplied with a centre trunnion (TC) mount, including the TCM1 bracket (order code F-SC125TC), allowing the cylinder to pivot during operation—ideal for swinging or articulating loads. The standard PT ports and TPU seals suit a wide range of industrial environments from -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X550TC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X550TC |
|---|---|
| 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 SC125X550TC
| 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 SC125X550TC Is Used
Heavy-Duty Clamping & Pressing
The high force output at 0.7 MPa (8590 N) makes this cylinder suitable for powerful clamping fixtures, stamping, or pressing operations in metal fabrication and assembly cells.
Material Handling & Sorting Gates
With its centre trunnion mount, the SC125X550TC can pivot to actuate heavy diverter gates or sorting arms on conveyor lines, handling bulky packages or raw materials.
Construction & Off-Highway Equipment
Delivering over a tonne of force (11045 N at 0.9 MPa), this cylinder is a reliable choice for actuating levers, brakes, and positioning mechanisms on mobile or stationary heavy equipment.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X550TC the Right Cylinder?
Select the SC125 when your application needs between roughly 6000 N and 11000 N of pneumatic force. 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 strokes of 550 mm, ensure the rod is not subjected to significant side loading; external guides or a guided cylinder should be used to prevent rod bending and premature seal wear.
To ensure a correct replacement, match five key points: 125 mm bore, 550 mm stroke, PT port thread, centre trunnion (TC) mounting with TCM1 bracket, and the standard TPU seal material. This is a tie-rod cylinder and will directly interchange with another AirTAC SC series cylinder of the same configuration.
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 SC125X550TC FAQ
At the standard 0.5 MPa operating pressure, 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.
No. For a 550 mm stroke, the 32 mm rod is not designed to support a side (radial) load. Applying a side load will cause the rod to bend, leading to seal failure and damage. You must use an external linear guide or a guided cylinder to absorb all side forces.
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