Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20 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 SAIJ32AX550-20
The AirTAC SAIJ32X550-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 530-550 mm window without adding external stops. It delivers 563 N of push force at 0.7 MPa and uses a PT tapered G1/8 port. The piston rod is made of SUS420J2 stainless steel, offering good resistance to moisture and corrosion compared to standard carbon steel.
Because this cylinder lacks a magnetic piston, it does not support CMSE or DMSE position sensors. The rear adjuster acts strictly as a mechanical travel stop to set the retract end-position during commissioning; it is not a lock and will not hold the load if air pressure drops.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20 |
|---|---|
| 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 SAIJ32AX550-20
| 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 SAIJ32AX550-20 Is Used
Machine Changeover
Dial in the 530-550 mm retract end-stop during product size changes without swapping the cylinder or repositioning external physical stops.
End-Position Tuning
Fine-tune the exact retraction point at commissioning to perfectly align a 32 mm bore actuator pushing 563 N at 0.7 MPa with a downstream conveyor gate.
Assembly Line Setup
Adjust the travel window on the factory floor to compensate for mechanical wear or slight part tolerances over the 550 mm stroke length.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20 the Right Cylinder?
Choose this 32 mm bore when your application requires 563 N of push force at 0.7 MPa and a long 550 mm stroke that needs precise end-position tuning. The 12 mm rod and M10x1.25 thread provide a robust interface, but at 550 mm of unsupported travel, you must use an external guide rail to prevent side-load damage. If you need to hold a load statically without live air pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster is only a stop.
This model is dimensionally interchangeable per ISO 15552. To match it exactly for a replacement, verify the 550 mm stroke, the 20 mm adjustment range, PT port threads, the SUS420J2 rod material, and the basic mounting style. Available SAIJ mounts include 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 SAIJ32AX550-20 FAQ
At 0.7 MPa operating pressure, this 32 mm bore cylinder provides 563 N of push force and 345 N of pull force. It can reach a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw lets you shorten the 550 mm nominal stroke by up to 20 mm, creating a 530-550 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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