Airtac SC125-160 Standard Cylinder SC125X400SH
The AirTAC Airtac SC125-160 Standard Cylinder SC125X400SH is a genuine double-acting standard air cylinder with a Ø125mm bore and 400mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke400 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
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About the Airtac SC125-160 Standard Cylinder SC125X400SH
The SC125X400SH is a double-acting pneumatic cylinder delivering 6136 N 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 400 mm stroke, this model is built for heavy industrial automation tasks requiring substantial force over a moderate travel distance.
This variant is equipped with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, enabling precise end-of-stroke or mid-stroke position feedback. The -H suffix specifies Viton (FKM) seals, extending the operating temperature range to 0–150 °C, making it suitable for high-temperature environments such as foundries or autoclaves. It features a 32 mm piston rod with M27x2 threads, PT1/2 ports, and a 28 mm adjustable air cushion for smooth deceleration.
Airtac SC125-160 Standard Cylinder SC125X400SH Technical Specifications
| Model | Airtac SC125-160 Standard Cylinder SC125X400SH |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 400 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 SC125-160 Standard Cylinder SC125X400SH
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×400 | 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 SC125-160 Standard Cylinder SC125X400SH Is Used
Heavy Press & Clamping
The 11045 N maximum thrust makes this cylinder ideal for hydraulic-press alternatives, heavy-duty clamping fixtures, and riveting stations in automotive assembly lines.
High-Temperature Actuation
With Viton seals rated to 150 °C, this actuator is a reliable choice for autoclave door mechanisms, kiln gates, and drying oven conveyors where standard seals would fail.
Material Handling & Sorting
The 400 mm stroke combined with high force is perfect for pushers and diverters on heavy-pallet conveyor systems, ensuring robust product sorting in logistics centers.
Is the Airtac SC125-160 Standard Cylinder SC125X400SH the Right Cylinder?
For applications requiring slightly less force, consider stepping down to the 100 mm bore (3927 N at 0.5 MPa). If your load demands more muscle, the 160 mm bore provides 10053 N at the same pressure. The 400 mm stroke is well within the 1500 mm maximum standard stroke for the 125 bore.
When replacing an existing cylinder, ensure a 5-point match: 125 mm bore, 400 mm stroke, PT1/2 port thread, the built-in magnet for sensor compatibility, and the Viton seal material for high-temperature resistance. For strokes of 300 mm or more, always evaluate side-load forces; an unsupported 32 mm rod at full extension can be subject to bending moments. Use an external linear guide or a guided cylinder if side loads are present.
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 SC125-160 Standard Cylinder SC125X400SH FAQ
At 0.7 MPa (7 bar), the theoretical push force is 8590 Newtons. The maximum operating force at 0.9 MPa is 11045 N. Always apply a safety factor for real-world dynamic loads.
No. The SC series is a tie-rod cylinder, not an ISO 15552 profile cylinder. It is shorter in overall length and the mounting dimensions differ. It is a direct replacement only for other AirTAC SC125 tie-rod cylinders matching the stroke, port, magnet, and seal specifications.
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