Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-20
The AirTAC Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-20 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 SGCJ250X400-20
Delivering 24543 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder handles heavy-duty motion with ease. Four steel tie rods clamp the aluminum barrel to the covers, providing structural rigidity, while the standard mounting interface drops directly into existing large-bore fixtures. It uses a G1 air port and a 50 mm piston rod with an M42x2.0 thread.
The -20 code defines a 20 mm external adjuster window that shortens the extend stroke on site, letting you fine-tune the end position from 380 to 400 mm without changing the hardware. The retract end remains fixed. This SKU has no magnet and cannot take a sensor; the -S variant is required for CMSG/DMSG/EMSG switches. Because TPU is unavailable on this 250 mm bore, it uses NBR seals, with a Viton H option for 0-150 C environments. In practice, it handles a safe working load of roughly 14726 N, lifting about 1251 kg vertically with a 2:1 margin.
Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-20 Technical Specifications
| Model | Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-20 |
|---|---|
| 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 SGCJ250X400-20
| 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 SGCJ250X400-20 Is Used
Heavy Pallet Lifting
Raises loaded pallets in automated distribution hubs, using the 20 mm extend adjuster to dial in exact stopping heights for varied package sizes.
Hydraulic Press Damping
Provides massive resistance and end-position tuning in large metal forming presses, relying on the 60 mm adjustable air cushions to absorb kinetic energy.
Mold Clamping Stations
Secures heavy injection molds during setup, utilizing the 34360 N push force at 0.7 MPa to hold position while the external stopper sets the final gap.
Is the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X400-20 the Right Cylinder?
Size this 250 mm bore against the 200 mm option, which provides 15708 N of 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 sharing a spare cylinder across multiple stroke variants or trimming end positions on site. SGCJ mountings include FA, LB, TC, FTC, TCM1, and TCM2. Because this is a no-S SKU, it cannot accept magnetic sensors. For any stroke over 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 SGCJ250X400-20 FAQ
This 250 mm bore cylinder features a G1 air port and a 50 mm rod. It generates 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.
The -20 indicates a 20 mm external adjuster window. The nominal 400 mm extend stroke is the maximum, but you can shorten it by up to 20 mm on site for a usable range of 380-400 mm. The retract end is fixed, and this stopper only sets position; it does not lock the load.
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