Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-30S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-30S
The AirTAC SAIJ200X70-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end-of-stroke position during commissioning. Based on a 70 mm nominal stroke and a 30 mm adjustment code, it provides a usable travel window of 40-70 mm. This large-bore 200 mm cylinder delivers massive thrust, generating 21991N push force at 0.7 MPa and up to 28274N at 0.9 MPa.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for enhanced durability against moisture, PT tapered port threads, and a built-in magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to set the travel end and does not lock the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-30S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 70 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 SAIJ200AX70-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SAIJ200AX70-30S Is Used
Machine Changeover
Dial in the exact 40-70 mm end position during product size changes without swapping out the physical cylinder hardware.
Heavy Pressing
Delivers up to 28274N of push force for high-tonnage pressing operations within a compact 70 mm nominal stroke.
Variable End Stops
Use the 30 mm rear adjuster screw to set precise retract positions on the fly for multi-variant assembly lines.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-30S the Right Cylinder?
Choose this 200 mm bore cylinder when an application requires exceptionally high force within a short travel distance, specifically requiring an end-position tuning range of 40-70 mm. If you need slightly less force, stepping down to the 160 mm bore yields 14074N push at 0.7 MPa. The adjustable rear stopper is ideal for variable end stops and machine changeovers, removing the need to swap cylinders or add external physical stops. For position holding without live air, this cylinder is insufficient as the adjuster is only a stop; you would need an external pilot-operated check valve or a related AirTAC BSAI clamp-lock cylinder. To match this ISO 15552 replacement exactly, specify: 200 mm bore, 70 mm stroke, 30 mm adjustment, PT ports, SUS420J2 rod, and a magnet for CMSE/DMSE sensors.
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 SAIJ200AX70-30S FAQ
At an operating pressure of 0.7 MPa, this 200 mm bore cylinder generates 21991N of push force and 15080N of pull force. At 0.9 MPa, the push force increases to 28274N.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the effective stroke by up to 30 mm. This creates a usable travel window of 40-70 mm from the 70 mm nominal stroke, enabling fine-tuning without replacing the cylinder.
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