Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 550mm 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
- Stroke550 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40
The AirTAC SAIJ32X550-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel, creating a 510-550 mm usable window. Built with a SUS304 stainless steel rod and PT tapered ports, it belongs to the 32 mm bore class, delivering 402 N of push force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback integration.
This model utilizes an external stopper screw at the retract end to fine-tune end positions during commissioning without adding external stops. The adjuster acts purely as a travel stop and does not lock the load without live air pressure. It supports a speed range of 30-800 mm/s and uses adjustable air cushions at both ends to decelerate the piston smoothly.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 550 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 SAIJ32BX550-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×550 | 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 SAIJ32BX550-40 Is Used
Machine Changeover
Dial in the 510-550 mm travel window during product size changes to set precise retract positions without replacing hardware.
Variable End Stops
Fine-tune the discharge or rejection point on a conveyor by adjusting the rear stopper screw at commissioning.
Assembly Fixtures
Adjust the stroke on the fly to accommodate varying part dimensions in light-duty 402 N assembly operations.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40 the Right Cylinder?
Choose this 32 mm bore cylinder when your application requires 402 N of push force at 0.5 MPa, or step up to the 40 mm bore if you need 628 N. The 40 mm rear adjustment is ideal for product changeovers on a line, allowing you to dial in the exact end-stop without swapping the cylinder. Because the total stroke is 550 mm, an external guide is recommended to prevent excessive side-load on the rod and M10x1.25 thread.
For an ISO 15552 replacement, match the 32 mm bore, 550 mm stroke, PT port thread, and SUS304 (B) rod material. Note that this SAIJ variant uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts. If your process requires the load to be held without continuous air pressure, select a SAIL or BSAI series cylinder instead, as this adjuster is not a brake.
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 SAIJ32BX550-40 FAQ
The rear adjuster screw lets you shorten the nominal 550 mm stroke by up to 40 mm, providing a usable travel range of 510-550 mm. It acts as a mechanical stop to set the end position and does not lock the load without live air.
As a 32 mm bore cylinder operating at 0.5 MPa, it provides 402 N of push force and 345 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 801 N.
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