Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 270mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke270 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50
The AirTAC SAIJ200X270-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications requiring precise end-position tuning. It delivers a formidable 15708 N push force at 0.5 MPa and features a rear mechanical stopper that trims the nominal 270 mm stroke back by up to 50 mm. This yields a usable travel window of 220-270 mm, allowing you to dial in the exact retract distance during commissioning without swapping out the entire actuator.
Built with an extruded aluminum barrel rather than a tie-rod design, this 200 mm bore unit is dimensionally interchangeable per ISO 15552. It incorporates a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The rear adjuster acts strictly as a travel stop to set deceleration points, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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, 50 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×270 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50 Is Used
Heavy Press Tuning
Fine-tune the 220-270 mm travel window during machine setup to precisely crush or form materials without recalculating fixed stopper blocks on the press bed.
Product Changeover
Adjust the retract end-position on the fly when switching between different pallet sizes on a high-thrust transfer line, utilizing the full 15708 N push force.
Large Assembly Jigs
Dial in the exact stroke distance for heavy fixture alignment, relying on the 40 mm SUS420J2 rod to withstand demanding industrial environments.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50 the Right Cylinder?
Selecting this 200 mm bore actuator makes sense when your machinery demands extreme thrust, such as the 15708 N push force at 0.5 MPa, but requires on-the-fly end-stop adjustments for product changeovers. If your application needs less force, stepping down to a 160 mm bore provides 10053 N of push force at 0.5 MPa, which might avoid excessive air consumption. Because the nominal stroke is 270 mm, you must account for potential side loads on the 40 mm rod; even with the robust M36x2 rod thread, long unsupported strokes require an external guide rail to prevent premature seal wear.
When specifying a replacement, ensure you match the 200 mm bore, 270 mm nominal stroke, 50 mm adjustment range, PT port threads, and the lack of a magnet. The mounting hardware must be chosen from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2, as FB, CA, CB, and CR configurations are omitted from this series. Remember that the rear screw is an adjuster, not a locking device; for true load-holding without live air, consider an AirTAC SAIL or BSAI cylinder.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
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 on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX270-50 FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. At the maximum 1.0 MPa pressure, it achieves a maximum push force of 3204 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel from the nominal 270 mm down to as little as 220 mm. This creates a 220-270 mm adjustable window for fine-tuning the retract position at commissioning, but it does not lock the load without live air pressure.
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