Airtac SAIJ200 Adjustable Cylinder SAIJ200X85-20
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X85-20 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200X85-20
The AirTAC SAIJ200X85-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust for heavy-duty operations. The integrated adjusting screw allows you to fine-tune the effective travel down from the 85mm nominal stroke, providing a usable window of 65-85mm to perfectly dial in end positions without adding external stops.
This model features a robust 40mm carbon steel rod with an M36x2 thread, paired with a G3/4 PT tapered port for high flow. It includes 50mm variable air cushions at both ends to manage kinetic energy. The rear adjuster acts purely as a travel stop for position tuning and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series. The extruded aluminum barrel includes dual sensor grooves, though this specific SKU omits the magnet for CMSE or DMSE switches.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X85-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X85-20 |
|---|---|
| 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X85-20
| 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 SAIJ200X85-20 Is Used
Heavy Press Tuning
Dial in the exact 65-85mm pressing depth during machine setup to accommodate different material thicknesses without swapping cylinders.
Product Changeover
Quickly adjust the rear stopper on the line to handle varying product sizes, using the 20mm trim window to hit precise end positions.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X85-20 the Right Cylinder?
Selecting this 200mm bore cylinder is appropriate when your application requires up to 3204 kgf of maximum force at 1.0 MPa. The adjustable-stroke design is chosen over a fixed SAI cylinder when you need on-the-fly end-position tuning during commissioning or product changeovers. When ordering a replacement, verify the 85mm stroke, 20mm adjustment range, G3/4 PT port, and your required mounting set.
Because the nominal stroke is relatively short at 85mm, side-load stress on the 40mm rod is minimal compared to longer strokes. However, for any application exceeding 300mm of travel, an external guide is strongly recommended to prevent rod binding. The SAIJ mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
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 SAIJ200X85-20 FAQ
At its maximum rated pressure of 1.0 MPa, it can deliver up to 3204 kgf.
The rear adjuster screw allows you to shorten the effective travel from the 85mm nominal stroke down by up to 20mm, creating a 65-85mm usable window. This stopper only sets the end position and does not lock the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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