Airtac SGC Standard Cylinder SGC125X400S
The AirTAC Airtac SGC Standard Cylinder SGC125X400S is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. Its large-bore tie-rod build delivers high thrust and drops into standardized ISO 15552 mounting on heavy automation.
- BoreØ125 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SGC Standard Cylinder SGC125X400S
Generating 6136 N of push force at 0.5 MPa, this double-acting large-bore cylinder handles substantial actuation tasks across a 400 mm stroke. Four steel tie rods clamp the aluminum barrel to the covers, providing the high rigidity needed for heavy loads, while the two-way piston seal maintains an internal oil reservoir for long service life. Because it is dimensionally interchangeable per the ISO 15552 mounting interface, it drops directly into existing large-bore fixtures.
Equipped with a built-in piston magnet (-S), this unit supports CMSG, DMSG, and EMSG reed or electronic switches for position sensing. The G1/2 port and M27x2.0 rod thread match the 125 mm bore standard. For practical sizing, plan for about 3682 N of real work at 0.5 MPa, which equates to lifting roughly 313 kg vertically with a 2:1 safety margin.
Airtac SGC Standard Cylinder SGC125X400S Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC125X400S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SGC datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Thread options: PT (blank) / G. TPU seals are not available for the Ø250 bore (NBR / Viton only).
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SGC Standard Cylinder SGC125X400S
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×400 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
SGC-family variants: SGC (double acting), SGCD (double rod), SGCJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / FTC / TCM1 / TCM2. Seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SGC Standard Cylinder SGC125X400S Is Used
Press Die Ejection
Uses the 6136 N push force at 0.5 MPa to eject stamped metal parts from heavy press dies over the 400 mm travel.
Pallet Stopper Gate
Acts as a robust 400 mm travel stopper gate on heavy-duty pallet conveyor lines, handling significant inertia safely.
Material Lift Lowering
Lowers stacked materials in automated packaging cells, safely managing loads up to 313 kg vertically with a 2:1 margin.
Is the Airtac SGC Standard Cylinder SGC125X400S the Right Cylinder?
This 125 mm bore is the smallest in the SGC family; if your application requires less force, you would step outside this series, while moving up to the 160 mm bore yields 10053 N of push at 0.5 MPa. The included -S magnet enables CMSG, DMSG, or EMSG sensors without further modification. Because the 400 mm stroke exceeds 500 mm is not applicable here, but at 400 mm you should still ensure adequate guidance to prevent rod bending under offset loads.
Remember that a standard double-acting cylinder drifts when air is lost or the valve is centered. The adjustable 40 mm air cushions at both ends only decelerate the piston near stroke end to prevent impact—they do not act as a lock. To hold a load securely in place, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Long-stroke side load — support the rod end
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; support long strokes at the rod end.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/CR/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SGC Standard Cylinder SGC125X400S FAQ
The 125 mm bore provides a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, push is 8590 N and pull is 8028 N. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 air port.
No, the double-acting piston will drift if air is lost or the valve is centered. The adjustable 40 mm air cushions only decelerate the piston near the end of the 400 mm stroke to prevent impact damage; they do not function as a brake. Use an external rod lock or pilot-operated check valve for secure load holding.
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Covers non-human-caused product damage.
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