Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-50S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX85-50S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ100 Adjustable Cylinder SAIJ100AX85-50S
It features an extruded aluminum barrel with sensor grooves on both sides and a SUS420J2 stainless steel rod. By turning the rear screw, you can trim the nominal 85mm stroke back by up to 50mm, creating a precise 35-85mm usable travel window without adding external stops.
This model includes a magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches. The rear adjuster functions purely as a mechanical stop to fine-tune the end position during commissioning; it does not lock or hold the load without continuous air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-50S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 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 SAIJ100 Adjustable Cylinder SAIJ100AX85-50S
| 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 SAIJ100AX85-50S Is Used
Product Changeover
Dial in the exact 35-85mm travel window during format size changes on a packaging line without replacing the cylinder or bolting on external stops.
End-Position Tuning
Fine-tune the retract end position at machine commissioning to achieve precise contact force, utilizing the rear screw stopper rather than relying on air cushions alone.
Variable End Stops
Provide adjustable physical stops for assembly stations where multiple parts with slightly different heights are processed on the same fixture.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-50S the Right Cylinder?
The 50mm adjustment range is particularly useful for product-size changeovers on a line, allowing operators to dial in the exact 35-85mm travel without swapping the cylinder.
To replace an existing ISO 15552 cylinder, match the 100mm bore, 85mm stroke, PT tapered port thread, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Because the 85mm stroke is relatively short, side-loading is less of a concern than with longer strokes, but external guides are still recommended if the load is heavy or off-center.
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 SAIJ100AX85-50S FAQ
At 0.7 MPa, the push force increases to 5497N.
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the effective stroke by up to 50mm. This turns the 85mm nominal stroke into a 35-85mm adjustable travel window, but it does not lock the position without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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