Airtac SGCD Dual Rod Cylinder SGCD250X400
The AirTAC Airtac SGCD Dual Rod Cylinder SGCD250X400 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 SGCD250X400
Delivering 23562 N of thrust in both directions at 0.5 MPa, this large-bore tie-rod cylinder uses a twin-rod piston to guarantee identical push and pull output. The symmetric load path prevents rod twisting under heavy offset weights. It yields a safe working load of roughly 14137 N for real work, which translates to lifting about 1201 kg vertically with a 2:1 safety margin.
Built on a genuine ISO 15552 mounting interface, it drops directly into existing large-bore fixtures without custom brackets. Four steel tie rods clamp the aluminium barrel for high structural rigidity. This 250 mm bore variant features a G1 air port and uses NBR seals instead of TPU. Note that this specific SKU lacks a magnet and cannot accept CMSG or DMSG sensors.
Airtac SGCD Dual Rod Cylinder SGCD250X400 Technical Specifications
| Model | Airtac SGCD Dual Rod Cylinder SGCD250X400 |
|---|---|
| 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 SGCD250X400
| 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 SGCD250X400 Is Used
Twin-Spindle Drilling
Drives two opposing machining heads simultaneously from one central piston, ensuring perfectly synchronized cutting cycles.
Symmetric Lift Platform
Lifts heavy platens evenly from both ends to prevent torsional twisting on large press feeding mechanisms.
Dual-End Transfer Pusher
Indexes parts on parallel conveyor lanes using a rod extending from each cover for matched cycle times.
Is the Airtac SGCD Dual Rod Cylinder SGCD250X400 the Right Cylinder?
This 250 mm bore sits at the top of the SGCD range, offering 23562 N both ways at 0.5 MPa. If your application needs less force, stepping down to the 200 mm bore provides 15079 N both ways. A double-rod design is the right call when you need anti-rotation guidance, twin tooling driven from one piston, or a rear rod to act as a sensor cam. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 400 mm, external guide rails are recommended to manage side loads and prevent binding. For position feedback, you must select the -S magnet variant to use CMSG, DMSG, or EMSG switches.
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 SGCD250X400 FAQ
The force is equal in both directions due to the double-rod design. It generates 23562 N at 0.5 MPa and 32986 N at 0.7 MPa. The theoretical maximum is 4805 kgf at 1.0 MPa. This 250 mm bore cylinder uses a G1 air port.
No, the air cushion only decelerates the piston near the stroke end; it will not hold a load without live air. You need an external rod lock or pilot-operated check valve for load holding. Also, this specific SKU has no magnet and cannot take sensors; you must order the -S version for CMSG or DMSG switches.
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Covers non-human-caused product damage.
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Large-bore cylinders built to order — confirm lead time.
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