Airtac Adjustable Cylinder SAIJ32 SAIJ32AX450-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX450-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 450mm 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
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX450-20
The AirTAC SAIJ32X450-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 450 mm travel by up to 20 mm. This creates a precise 430-450 mm usable window, allowing exact end-position tuning at commissioning without needing external stops. It features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and operates with a 12 mm rod diameter and M10x1.25 rod thread.
Delivering 402 N of push force at 0.5 MPa, this 32 mm bore cylinder relies on its 27 mm variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a travel stop, not a lock, meaning it cannot hold a load without live air pressure. For load-holding requirements, an external pilot-operated check valve or an AirTAC SAIL lock cylinder is required.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX450-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX450-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 450 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 SAIJ32AX450-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SAIJ32AX450-20 Is Used
Machine Changeover
Dial in the 430-450 mm retract position precisely when switching between product sizes on a packaging line, avoiding mechanical rebuilds.
End-Stop Calibration
Fine-tune the final resting position of a tooling head during commissioning using the rear screw, ensuring perfect alignment without swapping cylinders.
Assembly Fixtures
Provide adjustable reach for pressing or locating tasks where the exact bottoming-out point varies slightly between component batches.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX450-20 the Right Cylinder?
Choose this 32 mm bore cylinder when an application demands 402 N of push force at 0.5 MPa but requires fine-tuning of the retract end-position during setup or product changeovers. If your fixture needs less force, stepping down is not an option in this size range, but if you need significantly more thrust, stepping up to a 40 mm bore provides 628 N. The adjustable stroke is favored over a fixed SAI cylinder when you need a variable end-stop rather than machining new hard stops.
This configuration uses PT tapered port threads and omits the magnet, so it does not support CMSE or DMSE sensors. Because the 450 mm stroke is relatively long for a 32 mm bore, the 12 mm rod needs external guidance to prevent excessive side-loading and premature seal wear. Mounting options are limited to the SAIJ subset: 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 SAIJ32AX450-20 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 82 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm from the nominal 450 mm, providing a usable travel window of 430-450 mm. It functions as a mechanical stop and does not lock the load without continuous air pressure.
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