Airtac AIRTAC SC125-160 Standard Cylinder SC125X1250TC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X1250TC is a genuine double-acting standard air cylinder with a Ø125mm bore and 1250mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke1250 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X1250TC
The SC125X1250TC is a double-acting pneumatic cylinder delivering 6136 N of 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 a long 1250 mm stroke, this tie-rod actuator uses a 32 mm diameter piston rod with an M27x2 knuckle thread and features a 28 mm adjustable air cushion at each end to decelerate the piston smoothly.
This model is configured with a centre trunnion (TC) mount, supplied with the TCM1 bracket (F-SC125TC), allowing the cylinder to pivot during operation—ideal for swinging or articulating loads. Built to the ISO 6430 class for large bores, it operates on 40 µm filtered air at 0.15–1.0 MPa and a speed range of 30–500 mm/s, with a total extended body length of approximately 1453 mm.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X1250TC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X1250TC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 1250 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 SC125X1250TC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1250 | 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 SC125X1250TC Is Used
Heavy Part Clamping & Forming
Generates over 11,000 N of clamping force at 0.9 MPa for securely holding large weldments or composite layups in heavy manufacturing jigs.
Long-Stroke Material Pusher
The 1250 mm stroke and pivoting trunnion mount suit long-reach pushers that transfer heavy pallets or engine blocks between skewed conveyor lines.
Articulating Machine Linkage
Centre trunnion mounting enables the cylinder body to swing, acting as a powerful linear drive for pivoting booms or large scissor-lift mechanisms.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X1250TC the Right Cylinder?
Select the SC125 when your application requires a thrust class around 6136 N at 0.5 MPa. If you need higher force, step up to the SC160 bore which provides 10053 N at the same pressure; for a lighter, more compact solution, the SC100 bore delivers 3927 N. For this 1250 mm stroke, the long unsupported rod is susceptible to bending under side loads—always use an external linear guide or a guided cylinder to protect the rod bearing and seals.
To ensure a correct drop-in replacement, match five key specifications: bore (125 mm), stroke (1250 mm), port thread (PT1/2), centre trunnion mounting accessory (F-SC125TC with TCM1 bracket), and the absence of a built-in magnet. This cylinder is not an ISO 15552 profile unit; it is a shorter tie-rod design and should only replace another AirTAC SC125 of identical 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 SC125X1250TC 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 reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The SC125 is a double-acting cylinder and will drift or drop if pressure is exhausted or the directional valve is centered. To hold a load safely without live pressure, you must add an external rod brake, a mechanical lock, or a pilot-operated check valve.
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