Airtac SGC Standard Cylinder SGC250X400STCG
The AirTAC Airtac SGC Standard Cylinder SGC250X400STCG 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 SGC250X400STCG
Delivering 24543 N of push force at 0.5 MPa, this double-acting ISO 15552 tie-rod cylinder handles the heaviest pneumatic automation tasks. Four steel tie rods clamp the aluminum barrel to the front and rear covers, ensuring structural rigidity under massive thrust, 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.
As a 250 mm bore unit, it features a 50 mm piston rod, an M42x2.0 rod-end thread, and a G1 air port. The front-cover packing and buffer gasket are NBR, as TPU seals are not offered for this bore size; a Viton H option extends operating temperature to 0-150 C. The included -S magnet enables CMSG, DMSG, or EMSG position switches. For practical sizing, plan for about 14726 N of real work at 0.5 MPa, which lifts roughly 1251 kg vertically with a 2:1 safety margin.
Airtac SGC Standard Cylinder SGC250X400STCG Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC250X400STCG |
|---|---|
| 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 SGC250X400STCG
| 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 SGC250X400STCG 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 plate steel.
Pallet Lift Gate
Raises and lowers loaded automated pallet gates in distribution hubs, safely moving components within the 1251 kg vertical lift parameter.
Injection Mold Clamp
Secures heavy industrial molding halves using the TC trunnion mount for articulated alignment during high-force plastic injection cycles.
Is the Airtac SGC Standard Cylinder SGC250X400STCG the Right Cylinder?
When sizing this 400 mm stroke model against the SGC family, stepping down to the 200 mm bore lowers the push force to 15708 N at 0.5 MPa, while the 250 mm bore is the largest available in this series with a maximum theoretical output of 5006 kgf at 1.0 MPa. The pre-configured TC trunnion mount suits pivoting articulated mechanisms, and the integrated magnet supports electronic or reed sensors without external hardware. If your application requires holding a load vertically during air loss or valve centering, add an external rod lock or pilot-operated check valve, because the end-of-stroke air cushions only decelerate the piston and will not brake or hold the load.
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 SGC250X400STCG FAQ
This 250 mm 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 force of 5006 kgf at 1.0 MPa.
No, the adjustable 60 mm air cushions only decelerate the piston near the stroke ends and do not function as a braking or locking mechanism. The piston will drift on air loss or valve centering, so you must install an external rod lock or pilot-operated check valve to hold a load safely.
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