Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-50
The AirTAC Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-50 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 SGCJ250X80-50
Delivering massive thrust in a compact footprint, this large-bore ISO 15552 tie-rod cylinder generates 24543 N of push force at 0.5 MPa. The four steel tie rods clamp the aluminium barrel to the covers, providing structural rigidity while maintaining dimensional interchangeability per the ISO 15552 mounting interface for existing large-bore fixtures. A G1 port supplies the air, and the adjustable air cushion spans 60 mm at each end to decelerate heavy moving loads.
The -50 code defines an external adjuster that lets you shorten the extend stroke on site by up to 50 mm, dropping the usable forward travel from the 80 mm maximum down to 30 mm without changing the cylinder mount. This on-site tuning is ideal for setting precise end positions. 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 not offered on this 250 mm bore; NBR is standard, with a Viton H option available for 0 to 150 C high-heat environments.
Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-50 Technical Specifications
| Model | Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-50 |
|---|---|
| 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 SGCJ250X80-50
| 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 SGCJ250X80-50 Is Used
Press Fit Tuning
Fine-tune the 30 to 80 mm extend stroke on site to set precise insertion depth for heavy bearing press operations without swapping actuators.
Heavy Stamping Stop
Use the 50 mm adjuster window to dial in the exact material contact point, compensating for die wear or varying material thickness on the fly.
Vertical Lift Limit
Lift loads up to 1251 kg with a 2:1 safety margin, adjusting the extend stop to prevent overtravel when lowering heavy platens into fixtures.
Is the Airtac SGCJ200-250 Adjustable Cylinder SGCJ250X80-50 the Right Cylinder?
When sizing this actuator, the 250 mm bore sits at the top edge of the SGCJ range, delivering 24543 N push at 0.5 MPa compared to 15708 N on the neighbouring 200 mm bore. If your application only requires 0.5 MPa to move the load, stepping down saves space and air volume. The adjustable stroke feature is highly beneficial when you need to share a spare cylinder across slightly different stroke variants or fine-tune the end position after mechanical installation. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2. Because this is a no-S SKU, it cannot accept a magnetic switch; you must select an -S variant to use CMSG, DMSG, or EMSG sensors. Even at this short 80 mm stroke, ensure external guides support 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 SGCJ250X80-50 FAQ
This 250 mm bore cylinder uses 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 force of 5006 kgf at 1.0 MPa.
The external adjuster lets you shorten the extend stroke by up to 50 mm on site. The nominal 80 mm stroke is the maximum, so usable forward travel can be fine-tuned down to 30 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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Large-bore cylinders built to order — confirm lead time.
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