Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-75
The AirTAC Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-75 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 SGCJ250X400-75
Delivering massive thrust for heavy industry, this large-bore ISO 15552 tie-rod cylinder pushes with 24543 N at 0.5 MPa. Four steel tie rods clamp the aluminium barrel to the covers for high structural rigidity. The G1 air port feeds the 50 mm piston rod, generating a safe working load around 14726 N, which is roughly 1251 kg lifted vertically with a 2:1 margin.
The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, meaning the usable forward travel spans 325 to 400 mm without changing the cylinder itself. Because this is a 250 mm bore, TPU seals are unavailable; standard NBR packing handles -20 to +70 C, with a Viton H option for 0-150 C heat. This non-magnetic SKU cannot take a sensor, though the -S variant supports CMSG/DMSG/EMSG switches.
Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-75 Technical Specifications
| Model | Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-75 |
|---|---|
| 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 SGCJ250X400-75
| 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 SGCJ250X400-75 Is Used
Heavy Press Clamping
Provides 34360 N of clamping force at 0.7 MPa to hold large steel plates, using the 75 mm adjuster to dial in the exact material thickness on-site.
Stamping Positioning
Sets precise lower dead center for a heavy stamping die, shortening the 400 mm stroke by 75 mm to accommodate different tooling heights without swapping cylinders.
Foundry Mold Closing
Generates massive closing force for large sand molds, relying on the 60 mm adjustable air cushions at both ends to decelerate the heavy 50 mm rod smoothly.
Is the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-75 the Right Cylinder?
Size this 250 mm bore against the 200 mm option, which provides 15708 N push at 0.5 MPa, or step up if you need the absolute maximum 5006 kgf at 1.0 MPa. The adjustable stroke is ideal for fine-tuning end positions across multiple machines using one shared spare. Mounting options include FA, LB, TC, FTC, TCM1 and TCM2. Since this 400 mm stroke exceeds 500 mm, always use an external guide to prevent side-load damage. Without a magnet, this unit cannot accept position sensors.
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 SGCJ250X400-75 FAQ
This 250 mm bore cylinder features a G1 air port and a 50 mm rod. It delivers 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.
An external stop screw lets you shorten the extend stroke by up to 75 mm on-site. The usable forward travel becomes 325 to 400 mm, with 400 mm being the maximum. The retract end remains fixed. This mechanism only sets the end position; it does not lock the load.
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1-Year Warranty
Covers non-human-caused product damage.
Made to Order
Large-bore cylinders built to order — confirm lead time.
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