Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-40
The AirTAC Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-40 is a genuine double acting, adjustable stroke 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, adjustable stroke
- Rod threadM42×2.0
- CushionAdjustable, 60 mm
About the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-40
Delivering 24543 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder handles heavy-duty positioning with ease. Four steel tie rods clamp the aluminum barrel to the covers for structural rigidity, and the G1 air port feeds the 50 mm piston rod. It yields a safe working load of about 14726 N, which translates to lifting roughly 1251 kg vertically with a 2:1 safety margin.
The -40 code defines an external adjuster window that lets you shorten the extend stroke on-site from the 400 mm maximum down to 360 mm. You can fine-tune the end position without changing the cylinder itself, while the retract end remains fixed. This 250 mm bore uses NBR seals because TPU is unavailable here, though a Viton H option extends the temperature range from 0 to 150 C. As a plain SKU without a magnet, it cannot accept a CMSG or DMSG sensor.
Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-40 Technical Specifications
| Model | Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-40 |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø250 mm |
| Stroke | 400 mm |
| Acting type | Double acting, adjustable stroke |
| 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 SGCJ200-250 Adjustable Cylinder SGCJ250X400-40
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke 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 SGCJ200-250 Adjustable Cylinder SGCJ250X400-40 Is Used
Heavy Pallet Destrapping
Clamps massive steel-bound cargo securely. The 40 mm extend adjuster dials in the exact contact point to cut bands without overtravel.
Press Die Nulling
Sets heavy stamping dies into the exact home position. The external stop screw fine-tunes the 400 mm extend end during setup.
Foundry Mold Closing
Generates 34360 N of push at 0.7 MPa to seal large casting flasks. The 60 mm adjustable air cushion decelerates the heavy platen smoothly.
Is the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-40 the Right Cylinder?
When sizing this unit, stepping down to a 200 mm bore drops the 0.5 MPa push force to 15708 N, while moving up is impossible as 250 mm is the largest standard size. The 40 mm adjustable window is ideal for sharing a single spare cylinder across multiple stroke variants or finalizing end positions during machine commissioning. You can mount it via FA, LB, TC, FTC, TCM1, or TCM2 brackets. Because this is a non-magnetized model, it cannot take a position sensor; you would need the -S variant for CMSG/DMSG/EMSG switches. For any stroke at or above 500 mm, always use a guide rail to prevent side-load damage.
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 SGCJ200-250 Adjustable Cylinder SGCJ250X400-40 FAQ
At 0.5 MPa it provides 24543 N push and 23562 N pull. At 0.7 MPa it yields 34360 N push and 32986 N pull. The theoretical maximum force is 5006 kgf at 1.0 MPa. It uses a G1 port and a 50 mm rod.
The 400 mm nominal stroke is the maximum. The -40 code means an external stop screw lets you shorten the extend stroke on-site by up to 40 mm, giving a usable extend range of 360 to 400 mm. The retract end is fixed. This mechanism only sets end position and does not lock the load.
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