Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-20S
The AirTAC Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-20S is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø250mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1
- Acting typeDouble acting, adjustable stroke
- Rod threadM42×2.0
- CushionAdjustable, 60 mm
About the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-20S
Delivering 24543 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder integrates a 20 mm external adjuster to shorten the extend stroke on site. Four steel tie rods clamp the aluminum barrel to the covers, ensuring structural rigidity. The G1 air port feeds the 50 mm piston rod, and the built-in magnet (-S) supports CMSG, DMSG, and EMSG switches for precise position detection.
Because the nominal 80 mm stroke represents the maximum extension, you can fine-tune the end position down to a 60 mm usable stroke without changing the hardware. This translates to a safe working load of about 14726 N, or roughly 1251 kg lifted vertically with a 2:1 margin. Note that TPU seals are unavailable for this 250 mm bore; it uses NBR packings, with a Viton H option for 0 to 150 C environments.
Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-20S Technical Specifications
| Model | Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-20S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø250 mm |
| Stroke | 80 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 SGCJ250X80-20S
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 250 | Bore size in mm (125 / 160 / 200 / 250). |
| ×80 | 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 SGCJ250X80-20S Is Used
Press Tonnage Tuning
Use the 20 mm extend adjuster to set exact bottoming pressure on a 250 mm bore press, trimming the 80 mm stroke without remounting the cylinder.
Heavy Pallet Stops
Halts 1251 kg vertical loads safely. The G1 port and 50 mm rod absorb high kinetic energy, while the 60 mm cushion decelerates the payload smoothly.
Mold Clamping Adjustment
Secure heavy industrial molds by tweaking the extend position on the fly. The -S magnet confirms clamp engagement via CMSG sensors.
Is the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-20S the Right Cylinder?
When sizing this unit, stepping down to a 200 mm bore yields 15708 N push at 0.5 MPa, while this 250 mm bore tops the range at 24543 N. The adjustable stroke is ideal for sharing a spare cylinder across slightly different stroke variants or tuning end positions on-site. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2. The included -S magnet enables electronic or reed sensing. Even at an 80 mm stroke, ensure external guides carry any side loads to prevent rod binding.
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 SGCJ250X80-20S FAQ
This 250 mm bore cylinder features a G1 air port and delivers 24543 N push / 23562 N pull at 0.5 MPa, and 34360 N push / 32986 N pull at 0.7 MPa. The theoretical maximum force is 5006 kgf at 1.0 MPa.
The nominal 80 mm stroke is the maximum extension. The external adjuster lets you shorten the extend stroke on-site by up to 20 mm, yielding a usable extend range of 60 to 80 mm. The retract end remains fixed, and this mechanism only sets the end position; it does not lock the load.
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