Airtac SGC Standard Cylinder SGC250X400S
The AirTAC Airtac SGC Standard Cylinder SGC250X400S is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø250mm bore and 400mm stroke, G1 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.
- BoreØ250 mm
- Stroke400 mm
- Port sizeG1
- Acting typeDouble acting
- Rod threadM42×2.0
- CushionAdjustable, 60 mm
About the Airtac SGC Standard Cylinder SGC250X400S
Delivering massive thrust for heavy industry, this double-acting tie-rod cylinder pushes with 24543 N and pulls with 23562 N at 0.5 MPa. Four steel tie rods clamp the aluminium barrel to the covers for extreme rigidity, while the two-way piston seal maintains an internal oil reservoir for long service life. Plan for about 14726 N of real work at 0.5 MPa, which lifts roughly 1251 kg vertically with a 2:1 safety margin.
Because this is a Ø250 bore, TPU seals are unavailable; instead, the front-cover packing and buffer gasket use NBR, with a Viton H option for 0-150 C high-temperature environments. The built-in -S piston magnet enables CMSG, DMSG, or EMSG switches for precise end-position detection. Dimensionally interchangeable per the ISO 15552 mounting interface, it accepts standard large-bore fixtures and breathes through a G1 air port.
Airtac SGC Standard Cylinder SGC250X400S Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC250X400S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø250 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G1 |
| Rod thread | M42×2.0 |
| 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, 60 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 (Ø250mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 24544 N | 23562 N |
| 0.7 MPa | 34361 N | — |
| Max (@1.0 MPa) | 5006 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 SGC250X400S
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 250 | 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 SGC250X400S Is Used
Heavy Stamping Press
Drives large dies and platens in metal forming lines, utilizing the 34360 N push force at 0.7 MPa to shape thick steel plate.
Automotive Welding Fixture
Clamps heavy chassis components securely during robotic welding, relying on the rigid four-tie-rod construction to resist offset loads.
Palletizer Lift Gate
Actuates heavy material lift gates in end-of-line packaging, moving loads up to 1251 kg vertically with a 2:1 safety factor.
Is the Airtac SGC Standard Cylinder SGC250X400S the Right Cylinder?
When sizing this 400 mm stroke unit, verify your load against the 24543 N push force at 0.5 MPa. If you need less power, the smaller Ø200 bore provides 15708 N push; if you need more, note that Ø250 is the largest SGC bore available. For strokes of 400 mm or longer, guide external loads carefully to prevent rod bending and premature seal wear.
The -S magnet allows direct mounting of CMSG, DMSG, or EMSG sensors. Remember that an unpowered cylinder drifts when air is lost or the valve centers—the 60 mm adjustable air cushion only decelerates the piston near stroke end. Install an external rod lock or pilot-operated check valve to hold suspended loads safely.
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 SGC250X400S FAQ
This Ø250 bore cylinder features a G1 air port and an M42x2.0 rod thread. It generates 24543 N push and 23562 N pull at 0.5 MPa, 34360 N push and 32986 N pull at 0.7 MPa, with a theoretical maximum of 5006 kgf at 1.0 MPa.
Yes, it is dimensionally interchangeable per the ISO 15552 mounting interface, so it drops directly into standard large-bore fixtures. The included -S piston magnet supports CMSG, DMSG, and EMSG reed or electronic switches for position sensing.
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Covers non-human-caused product damage.
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