Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20S
The AirTAC SAIJ32X900-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 880 and 900 mm. It delivers 402 N of push force at 0.5 MPa, scaling up to 724 N at 0.9 MPa. This variant includes a SUS420J2 stainless steel rod (option A) and a built-in magnet for position sensing.
Equipped with PT tapered ports and a 12 mm rod with an M10x1.25 thread, it provides a robust interface for various tooling. The extruded aluminum barrel integrates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state switches. Variable air cushions at both ends manage end-of-stroke deceleration across the 30-800 mm/s speed range.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 900 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 SAIJ32AX900-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×900 | 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 SAIJ32AX900-20S Is Used
Machine Setup Tuning
Dial in the exact 880-900 mm end position during commissioning to perfect a pressing or forming operation without machining new spacers.
Product Changeovers
Quickly adjust the retract stop for different package sizes on a packaging line, utilizing the 20 mm adjustment range to handle varied formats.
Long-Stroke Assembly
Execute extended linear positioning tasks with the 900 mm stroke while relying on the 12 mm rod and M10x1.25 thread for secure tooling attachment.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX900-20S the Right Cylinder?
Choose this 32 mm bore when your application requires moderate force, as stepping down to a smaller bore would reduce thrust, while stepping up to a 40 mm bore increases push force to 628 N at 0.5 MPa. The adjustable stroke is ideal for product changeovers, letting you dial in the exact end position without swapping the cylinder or adding external stops. For a 900 mm stroke, an external guide is strongly recommended to prevent excessive rod side-loading.
When specifying an ISO 15552 replacement, match the 32 mm bore, 900 mm stroke, PT G1/8 port, and the -S magnet requirement. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true fail-safe load holding, 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 Adjustable Cylinder SAIJ32 SAIJ32AX900-20S FAQ
At 0.5 MPa operating pressure, it provides 402 N of push force and 345 N of pull force. At 0.9 MPa, the push force increases to 724 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 900 mm down to 880 mm, providing a 20 mm tuning window to fine-tune the end position without external stops.
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