Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X800-20S
The AirTAC Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X800-20S is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø250mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1
- Acting typeDouble acting, adjustable stroke
- Rod threadM42×2.0
- CushionAdjustable, 60 mm
About the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X800-20S
Delivering massive thrust for heavy industry, this large-bore ISO 15552 tie-rod cylinder pushes with 24543 N at 0.5 MPa. The four steel tie rods clamp the aluminium barrel securely to the covers, while the G1 pneumatic port feeds the Ø50 mm rod. Because this is an adjustable-stroke unit, an external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 780 to 800 mm without changing the mount.
The built-in piston magnet supports CMSG, DMSG and EMSG switches for precise position detection. It handles a safe working load of about 14726 N, which translates to lifting roughly 1251 kg vertically with a 2:1 margin. Note that TPU seals are unavailable for Ø250 bores; standard NBR packing handles -20 to +70 C, with a Viton H option for 0 to 150 C environments.
Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X800-20S Technical Specifications
| Model | Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X800-20S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø250 mm |
| Stroke | 800 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 SGCJ250X800-20S
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 250 | Bore size in mm (125 / 160 / 200 / 250). |
| ×800 | 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 SGCJ250X800-20S Is Used
Heavy Press Ejection
Fine-tune the 780 to 800 mm extend position on-site to perfectly strike and eject large formed panels from a hydraulic press.
Pallet Positioning Stop
Adjust the end stop by up to 20 mm to accommodate varying pallet dimensions without repositioning the entire cylinder assembly.
Large Door Actuation
Leverage the 24543 N push force to smoothly swing heavy industrial bulkhead doors, tweaking the open angle via the external adjuster.
Is the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X800-20S the Right Cylinder?
When sizing this unit, the Ø250 bore sits at the top of the SGCJ range, pushing 24543 N at 0.5 MPa compared to 15708 N for the Ø200. Dropping down offers less force, whereas stepping up requires a custom solution. The 20 mm adjustable window is ideal for sharing a spare cylinder across machines with slightly different end positions. Mounting options include FA, LB, TC, FTC, TCM1 and TCM2 brackets. The -S suffix means the magnet is present for sensors. Because the stroke is 800 mm, you must use external guide rails to prevent rod bending under side loads.
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 SGCJ250X800-20S FAQ
This Ø250 bore cylinder features a G1 air port and an M42x2.0 rod thread. It pushes with 24543 N and pulls with 23562 N at 0.5 MPa. At 0.7 MPa, push is 34360 N and pull is 32986 N. The theoretical maximum force is 5006 kgf at 1.0 MPa.
The nominal 800 mm stroke is the maximum length. The external adjuster lets you shorten the extend stroke by up to 20 mm on-site, yielding a usable extend range of 780 to 800 mm. The retract end remains fixed. This mechanism sets the end position and is not a load lock; you need an external rod lock or pilot-operated check valve to hold a load on air loss.
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