Airtac AIRTAC SC125-160 Standard Cylinder SC125X70S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X70S is a genuine double-acting standard air cylinder with a Ø125mm bore and 70mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke70 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X70S
The SC125X70S is a double-acting pneumatic cylinder with a 125 mm bore and 70 mm stroke, factory-equipped with a built-in magnet (-S suffix) so CMSG/DMSG/EMSG solid-state or reed sensors clamp directly onto the tie-rod barrel for clean, non-contact position sensing. At 0.5 MPa air pressure it generates 6136 N pushing force and 5734 N pulling force, placing it firmly in the heavy-duty actuation class.
This model uses a 32 mm piston rod with M27×2 male knuckle threads and PT1/2 ports. The adjustable air cushion at each end is 28 mm long, and the body length A is 203 mm. With a 70 mm stroke the total extended length is approximately 273 mm. The standard TPU/NBR seals give an operating range of -20 to +70 °C, and the standard port thread is PT.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X70S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X70S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 70 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 SC125X70S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 SC125X70S Is Used
Pallet Stop & Lift Gates
The 6136 N push force at 0.5 MPa easily raises or stops heavy pallets on conveyor lines. The built-in magnet lets CMSG sensors confirm gate-open and gate-closed positions to the PLC.
Heavy-Duty Clamping Fixtures
Apply consistent, high clamping pressure to large weldments or castings. The 70 mm stroke provides ample clearance for part loading, and the adjustable cushion quiets the clamp impact.
Press & Forming Assist
Delivers 8590 N push at 0.7 MPa for light pressing, forming, or riveting operations. Sensor feedback from the -S magnet confirms full retraction before the operator reloads the tool.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X70S the Right Cylinder?
Choose the SC125X70S when you need roughly 6 kN of force at standard shop air and want sensor-ready feedback without adding external brackets. If your load requires significantly less force, stepping down to the SC100 bore (3927 N push at 0.5 MPa) can reduce air consumption and physical size. For higher force, the SC160 bore delivers 10053 N at the same pressure.
When replacing an existing cylinder, match five points: 125 mm bore, 70 mm stroke, PT port thread, the built-in magnet (-S), and the basic (no accessory) mounting. The SC series is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders; it is shorter in overall length.
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 SC125X70S FAQ
At 0.5 MPa the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa push rises to 8590 N, and at the maximum operating pressure of 0.9 MPa it reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
Yes. The -S suffix means a magnet is built into the piston, so AirTAC CMSG (reed) or DMSG/EMSG (solid-state) sensors clip directly onto the tie-rod barrel without any additional mounting hardware.
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