Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 800mm 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
- Stroke800 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-40
The AirTAC SAIJ200X800-40 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty tasks, delivering a robust 15708N push force at 0.5MPa. It features a rear stroke adjuster that creates a 760-800mm usable travel window, allowing you to dial back the 800mm nominal stroke by up to 40mm. This built-in adjustability enables fine end-position tuning at commissioning without adding external stops.
Equipped with a SUS420J2 stainless steel rod (option A) and PT tapered G3/4 ports, it handles demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. Remember that the rear adjuster functions purely as a travel stop for deceleration, not a lock, so live air is required to hold the load.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 800 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 SAIJ200AX800-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×800 | 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 SAIJ200AX800-40 Is Used
Heavy Press Tuning
Dial in the exact bottom position of a 15708N press during initial commissioning using the 40mm rear adjuster, ensuring perfect crimp depth without machining spacers.
Product Changeover Stops
Adjust the retract stopper by up to 40mm to accommodate different package sizes on a heavy conveyor line, shifting the 760-800mm travel window rapidly.
Large Fixture Alignment
Fine-tune the end-of-stroke position on large automated welding fixtures, using the heavy 200mm bore to move massive payloads while tweaking the stop during setup.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX800-40 the Right Cylinder?
Selecting this 200mm bore cylinder makes sense when your application requires substantial thrust, such as the 15708N push force at 0.5MPa, and demands on-the-fly end-position tweaks. If you need less force, stepping down to a 160mm bore yields 10053N of push force at 0.5MPa. The adjustable stroke is ideal for machine setups requiring product changeovers, giving you a 40mm variable end-stop window without swapping cylinders.
When replacing an ISO 15552 cylinder, match the 200mm bore, 800mm stroke, 40mm adjustment, PT G3/4 port, and mounting from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 800mm stroke is long, the 40mm diameter rod and M36x2 thread carry significant side loads, but an external guide is mandatory to prevent rod binding. For load-holding without air pressure, consider the SAIL or BSAI series instead.
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 SAIJ200AX800-40 FAQ
At 0.5MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 3204 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 800mm down to 760mm. This creates a 760-800mm setup window for precise end-position tuning without replacing the cylinder.
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