Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40 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 SAIJ200AX85-40
The AirTAC SAIJ200X85-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 15708N at 0.5MPa and 21991N at 0.7MPa. Its integrated adjusting screw allows you to dial back the nominal 85mm travel by up to 40mm, creating a precise 45-85mm usable stroke window for exact end-position tuning at commissioning. This eliminates the need to swap cylinders or bolt on external stops during product changeovers.
Built with an SUS420J2 stainless steel rod for enhanced durability and a PT tapered port thread, this unit features variable air cushions at both ends to decelerate the heavy 200mm bore payload. The rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40 |
|---|---|
| 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 SAIJ200AX85-40
| 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 SAIJ200AX85-40 Is Used
Heavy Press Tuning
Dial in the exact 45-85mm pressing distance during commissioning without swapping out the massive 200mm bore cylinder.
Variable End-Stops
Use the 40mm rear adjustment screw to modify the retract position for different product sizes on the same assembly line.
Machine Changeover
Quickly adapt the effective stroke window during product line changeovers, saving downtime on mechanical reconfiguration.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-40 the Right Cylinder?
Choose this 200mm bore adjustable-stroke cylinder when your application requires extreme force and the ability to fine-tune the retract end position on the fly. If your thrust requirements are lower, stepping down to the 160mm bore yields 10053N at 0.5MPa, while the 200mm bore provides a maximum of 3204kgf at 1.0MPa. The adjustable 45-85mm window is ideal for variable end-stops and machine setup, whereas a fixed SAI cylinder is better suited for static, unchanging travel. When replacing an ISO 15552 cylinder, match the 200mm bore, 85mm stroke, PT G3/4 port, and the specified mounting. Although the 40mm stainless rod handles high side-loads, an external guide is recommended for optimal stability.
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 SAIJ200AX85-40 FAQ
At 0.5MPa it provides 15708N push and 15080N pull. At 0.7MPa the push force increases to 21991N, with a maximum push of 28274N at 0.9MPa.
The rear adjuster screw lets you shorten the 85mm nominal stroke by up to 40mm, providing a 45-85mm usable travel window. It acts as a mechanical stop and does not hold the load without live air.
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