Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 85mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40
The AirTAC SAIJ100X85-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 85mm travel that can be dialed back by up to 40mm, giving you a precise 45-85mm usable stroke window for exact end-position tuning at commissioning. Delivering 3927N of push force at 0.5MPa, it handles heavy actuation tasks effortlessly.
This model uses a robust 25mm carbon steel rod with an M20x1.5 thread, paired with G1/2 PT ports. It features variable air cushions at both ends to decelerate the load smoothly. Remember that the rear adjuster acts only as a travel stop, not a lock, so it will not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 85 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X85-40 Is Used
End-Stop Calibration
Dial in the 45-85mm travel window during machine commissioning to perfectly strike a workpiece without adding external stops.
Product Changeover
Quickly adapt the cylinder's effective stroke on packaging lines when switching between different carton or part sizes.
Heavy Clamping
Leverage the 3927N push force at 0.5MPa to secure heavy workpieces, using the adjuster to fine-tune the clamping depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-40 the Right Cylinder?
Choose this adjustable SAIJ over a fixed-stroke SAI when your machine setup requires variable end-stops or frequent product-size changeovers without physically swapping the cylinder. If you need to step down the bore size, the 80mm neighbor provides 2513N push force at 0.5MPa. To step up, the 125mm bore yields 6136N. To replace this ISO 15552 cylinder, match the 100mm bore, 85mm stroke, 40mm adjustment, G1/2 PT ports, and standard carbon steel rod.
Because the 85mm stroke is relatively short, side-load risks are minimal, but long unsupported strokes still need an external guide. For applications requiring true load-holding without live pressure, consider the SAIL or BSAI series instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100 Adjustable Cylinder SAIJ100X85-40 FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective travel from 85mm down to 45mm. This provides a 40mm tuning window to set exact end-positions without swapping cylinders.
At 0.5MPa operating pressure, it provides 3927N of push force and 3681N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 801kgf of push force.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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