Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40S
The AirTAC SAIJ200X85-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 85 mm stroke by up to 40 mm. This creates a precise 45-85 mm usable travel window for fine-tuning end positions during commissioning without adding external stops. Delivering 15708 N of push force at 0.5 MPa, it handles massive loads while the SUS420J2 stainless steel rod provides high corrosion resistance.
The integrated -S magnet supports position sensing via CMSE reed or DMSE electronic switches fitted into the dual sensor grooves. Fluid supply routes through PT tapered G3/4 ports, and the extruded aluminum barrel maintains a true ISO 15552 mounting interface. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 85 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 SAIJ200AX85-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SAIJ200AX85-40S Is Used
Heavy Press Tuning
Dial in the exact 45-85 mm contact position for heavy stamping or pressing operations during setup, ensuring optimal force without re machining hard stops.
Product Line Changeover
Quickly adapt the cylinder's extended end position on automated assembly lines when switching between product variants of different heights.
Sensor-Verified Clamping
Leverage the built-in -S magnet with DMSE electronic sensors to confirm clamp positions while using the rear screw to compensate for tooling wear over time.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40S the Right Cylinder?
Choose this 200 mm bore when your application requires up to 15708 N of thrust at 0.5 MPa (or 21991 N at 0.7 MPa). If you need less force, stepping down to the 160 mm bore yields 10053 N at 0.5 MPa, whereas the 200 mm bore is reserved for heavy-duty positioning. The 45-85 mm adjustable window is ideal for product changeovers where the exact end-of-stroke varies by batch, unlike a fixed SAI cylinder. Because the stroke is under 300 mm, side-load stress is manageable, but an external guide is still recommended for heavy tooling. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For true load-holding without live air, select 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 SAIJ200AX85-40S FAQ
At 0.5 MPa it provides 15708 N of push force and 15080 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 21991 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from 85 mm down to as little as 45 mm, creating a 45-85 mm window for fine-tuning without replacing the cylinder.
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