Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-20
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX85-20 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 SAIJ100AX85-20
The AirTAC SAIJ100X85-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 65-85 mm usable travel window. By dialing the stopper back up to 20 mm, you can fine-tune the retract position at commissioning without swapping the cylinder or adding external stops.
This SKU features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and carries a PT tapered G1/2 port. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting. The rear adjuster acts purely as a travel stop to set the end position, so it will not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-20 |
|---|---|
| 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 SAIJ100AX85-20
| 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 SAIJ100AX85-20 Is Used
Product Changeover Setup
Dial in the exact 65 to 85 mm retract position on packaging lines when switching between carton sizes, avoiding the need to physically swap cylinders or add external shims.
Variable Assembly Station
Adapt the clamping travel on the fly for multi-stage assembly fixtures, utilizing the SUS420J2 stainless steel rod to withstand harsh industrial environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-20 the Right Cylinder?
The adjustable 65-85 mm stroke is ideal for product changeovers or variable end-stops where a fixed 85 mm SAI cylinder would require shimming. If your machine needs to hold a load during an air-loss event, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
For an exact ISO 15552 replacement, match the 100 mm bore, 85 mm nominal stroke, 20 mm adjustment range, PT G1/2 port, and your required mounting bracket from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Because the stroke is under 300 mm, side-load stress is minimal, but always ensure the M20x1.5 rod thread is aligned to prevent binding.
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 SAIJ100AX85-20 FAQ
At 0.7 MPa, the push force increases to 5497 N.
The rear stopper screw lets you trim the effective travel from the 85 mm nominal stroke down to as little as 65 mm. This allows you to fine-tune the end position during commissioning, but it functions only as a stop and does not lock the load without air pressure.
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Standard models are processed and dispatched in 3-5 business days.
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