Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 850mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke850 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20
The AirTAC SAIJ32X850-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down by up to 20 mm. This specific SKU provides an 830-850 mm usable stroke window, letting you dial in the exact end position during machine commissioning without swapping out the entire barrel. It delivers 402 N of push force and 345 N of pull force at 0.5 MPa, making it well-suited for lighter-duty positioning tasks.
This model uses a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. It features PT (tapered) port threads and a G1/8 air supply connection. The extruded aluminum barrel includes sensor grooves on both sides for easy switch mounting, though this unit is specified without a magnet. The rear adjuster acts purely as a mechanical stop to set the travel end and does not lock or hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×850 | 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 Adjustable Cylinder SAIJ32 SAIJ32AX850-20 Is Used
Variable End-Stop Setup
Dial in the exact 830-850 mm travel distance during machine commissioning to accommodate varying product lengths without adding external hard stops.
Product Changeover
Quickly adjust the retract end position on a packaging line when switching to a different package size, saving setup time.
Light-Duty Positioning
Utilize the 402 N push force at 0.5 MPa for precise, low-impact end-of-travel positioning of light workpieces on automated fixtures.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX850-20 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your application requires precise variable end-stops or frequent product-size changeovers that a fixed-stroke SAI cannot accommodate. If your process needs higher thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Because the nominal stroke is 850 mm, the 12 mm rod requires external guiding to prevent sagging and side-load damage over this long unsupported distance.
For load-holding without continuous live air, the rear adjuster and air cushions are insufficient; you should specify an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder instead. To replace an ISO 15552 cylinder, match the 32 mm bore, 850 mm stroke, 20 mm adjustment range, PT G1/8 ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
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 Adjustable Cylinder SAIJ32 SAIJ32AX850-20 FAQ
The rear adjusting screw acts as a mechanical stop that shortens the effective stroke by up to 20 mm. This creates an 830-850 mm usable travel window, allowing you to fine-tune the retract end position at commissioning. It is a travel stop, not a lock, and cannot hold the load without live air pressure.
At 0.5 MPa operating pressure, the SAIJ32X850-20 provides 402 N of push force and 345 N of pull force. If your application requires more power, stepping up to the 40 mm bore increases the push force to 628 N at the same pressure.
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