Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-50S 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 SAIJ32AX550-50S
The AirTAC SAIJ32X550-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It delivers 402N of push force at 0.5 MPa and features a 12mm SUS420J2 stainless steel rod. By turning the rear stopper screw, you can dial back the 550mm nominal stroke to establish a precise 500-550mm usable travel window without adding external stops.
This adjustable-stroke variant includes a piston magnet for position sensing with AirTAC CMSE reed or DMSE solid-state switches. It uses a PT G1/8 tapered port and retains the standard extruded aluminum barrel with dual sensor grooves. The rear adjuster acts purely as a travel stop to fine-tune deceleration; it does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-50S |
|---|---|
| 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 SAIJ32AX550-50S
| 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 SAIJ32AX550-50S Is Used
Machine Setup Commissioning
Dial in the exact retract position within the 500-550mm window during initial machine commissioning, avoiding the need to machine custom spacers or swap cylinders for minor positional corrections.
Product Size Changeover
Quickly adapt the retract end-stop on automated lines when switching between product variants, using the 50mm adjustment range to accommodate different part lengths on the fly.
Variable End-Stop Sorting
Provide a finely tuned physical stop for conveyor sorting mechanisms where the exact retraction distance must be calibrated to the millimeter to prevent downstream collisions.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-50S the Right Cylinder?
Select this 32mm bore when your machine setup requires variable end-stops or product changeovers, stepping up from a smaller bore if you need more force than lighter pneumatic lines offer, or down from a 40mm bore (which yields 628N push at 0.5 MPa) for tighter spaces. The 50mm adjustment window is ideal for tuning the retract end-position at commissioning rather than swapping a fixed-stroke SAI cylinder.
Because the 550mm stroke is relatively long for a 32mm bore, the 12mm rod and M10x1.25 thread will carry moderate side loads, but an external guide is recommended to prevent rod binding. To replace this cylinder with another ISO 15552 unit, match the 32mm bore, 550mm stroke, 50mm adjustment, PT G1/8 port, and -S magnet. For load-holding without live air, use an external rod lock or choose the SAIL or BSAI series instead.
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 SAIJ32AX550-50S FAQ
At a 0.5 MPa operating pressure, this 32mm bore cylinder generates 402N of push force and 345N of pull force. At 0.7 MPa, the push force increases to 563N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 550mm nominal stroke by up to 50mm, creating a 500-550mm usable travel window. It sets the end position but does not lock the load without continuous air pressure.
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