Airtac SGCD Dual Rod Cylinder SGCD250X400S
The AirTAC Airtac SGCD Dual Rod Cylinder SGCD250X400S is a genuine double acting, double rod 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, double rod
- Rod threadM42×2.0
- CushionAdjustable, 60 mm
About the Airtac SGCD Dual Rod Cylinder SGCD250X400S
Delivering 23562 N of equal force in both directions at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder uses a twin-rod piston to balance the load path perfectly. The double-rod design prevents torsional twist and allows you to mount a sensor cam or drive a second tool from the back end. It provides a safe working load of about 14137 N, which translates to lifting roughly 1201 kg vertically with a 2:1 safety margin.
Four steel tie rods clamp the aluminium barrel to the covers for high structural rigidity, and the G1 port handles the massive air volume required for the 250 mm bore. Because this is a 250 mm bore, TPU seals are not available; instead it uses NBR packings, with a Viton H option for 0-150 C high-temperature environments. The built-in -S magnet supports CMSG, DMSG and EMSG switches for position sensing.
Airtac SGCD Dual Rod Cylinder SGCD250X400S Technical Specifications
| Model | Airtac SGCD Dual Rod Cylinder SGCD250X400S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø250 mm |
| Stroke | 400 mm |
| Acting type | Double acting, double rod |
| 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 | Force (both ways) | — |
|---|---|---|
| 0.5 MPa | 23562 N | 23562 N |
| 0.7 MPa | 32987 N | 32987 N |
| Max (@1.0 MPa) | 5006 kgf | |
Double-rod: the rod passes through both covers, so output force is equal in both directions.
Model Code: Airtac SGCD Dual Rod Cylinder SGCD250X400S
| SGCD | ISO 15552 tie-rod cylinder (double-rod 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 SGCD Dual Rod Cylinder SGCD250X400S Is Used
Twin-Spindle Drilling
Drives two opposing machining spindles simultaneously using the equal force from both rod ends, ensuring perfectly balanced cutting pressure.
Heavy Press Lowering
Lowers large stamping platens with a symmetric load path that prevents guide bushing wear, relying on 23562 N of thrust at 0.5 MPa.
Synchronized Conveyor Transfer
Moves heavy pallets between parallel belt lines by pushing and pulling identical loads with zero force differential between strokes.
Is the Airtac SGCD Dual Rod Cylinder SGCD250X400S the Right Cylinder?
Sized at the top of the SGCD range, this 250 mm bore provides 23562 N each way at 0.5 MPa, stepping up considerably from the 200 mm bore which offers 15079 N. As the highest available bore, it is the correct choice when you need maximum equal-both-ways thrust. A double-rod configuration is the right call when your application demands anti-rotation stability, symmetric load distribution, or twin tooling driven from one piston. Mounting options include FA, LB, TC, FTC, TCM1 and TCM2. The included -S magnet enables electronic or reed switch sensing. For this 400 mm stroke, ensure external guide rails are used to absorb side loads and prevent rod binding.
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 SGCD Dual Rod Cylinder SGCD250X400S FAQ
Because it is a double-rod cylinder, force is equal both ways using the rod-side area. It delivers 23562 N at 0.5 MPa and 32986 N at 0.7 MPa, with a theoretical maximum of 4805 kgf at 1.0 MPa. The air port size is G1.
No, a standard cylinder drifts when air is lost or the valve is centered, as the adjustable 60 mm cushion only decelerates the piston near stroke end. To maintain a vertical load safely, you must add an external rod lock or a pilot-operated check valve.
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