Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-30
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-30
The AirTAC SAIJ200X250-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 220-250 mm without swapping the barrel. Built with a robust 40 mm piston rod, it delivers a potent 15080 N pull force at 0.5 MPa, making it ideal for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This model features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and uses PT tapered port threads. It operates at speeds of 30-500 mm/s and includes adjustable air cushions at both ends to manage heavy impact loads. The rear stopper screw sets the retract end position, acting purely as a travel stop rather than a load-holding lock.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-30 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAIJ200AX250-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SAIJ200AX250-30 Is Used
Heavy Assembly Changeover
Dial in the 220-250 mm travel window during product size transitions on heavy assembly lines without physically replacing the actuator.
End-Stop Tuning
Fine-tune the retract position at machine commissioning using the rear screw, avoiding the need to bolt on external mechanical stops.
Large Fixture Positioning
Leverage the 15080 N pull force to shift heavy machining fixtures, relying on the adjustable stroke to set exact positioning limits.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-30 the Right Cylinder?
Choose this 200 mm bore cylinder when your application requires substantial thrust, such as moving heavy assemblies, and you need precise end-position tuning during commissioning. If your force requirements are lower, stepping down to a 160 mm bore yields 9425 N of pull force at 0.5 MPa, which may offer a more compact footprint. Conversely, if you need maximum push force, the 200 mm bore provides 15708 N at 0.5 MPa.
An adjustable stroke is highly beneficial for product changeovers on a line, allowing you to dial in the exact end-stop without adding external stops. Because the stroke is 250 mm, you should ensure proper external guiding to prevent excessive side loading on the 40 mm rod. Remember that the rear adjuster and air cushions do not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series. To match this ISO 15552 footprint, specify a 200 mm bore, 250 mm stroke, 30 mm adjustment, PT ports, and the SUS420J2 rod.
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 SAIJ200AX250-30 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. It can deliver a maximum of 3204 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 250 mm stroke by up to 30 mm, creating a usable travel window of 220-250 mm. It sets the end position but does not lock the load without live air pressure.
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