Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-40
The AirTAC SAIJ32X250-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the retract end-position. With a nominal 250 mm stroke and a 40 mm adjustment screw, it provides a usable travel window of 210 to 250 mm. This bore size delivers 402 N of push force and 345 N of pull force at 0.5 MPa, fitting light-duty applications.
The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, though this specific SKU is non-magnetic. It uses a PT tapered port thread and a SUS420J2 stainless steel rod for improved corrosion resistance. The SAIJ mounting set omits FB, CA, CB, and CR options, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAIJ32AX250-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SAIJ32AX250-40 Is Used
End-Stop Tuning
Dial in the exact retract position within a 210 to 250 mm window during commissioning without machining external stopper blocks.
Product Changeover
Quickly adapt the cylinder travel for different part sizes on a packaging line by rotating the rear adjustment screw.
Light-Duty Positioning
Move light payloads with 402 N of push force while relying on the standard ISO 15552 mounting footprint for easy integration.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-40 the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N push force at 0.5 MPa, or step up to the 40 mm bore if you need 628 N. The adjustable stroke is ideal for machine setup and product changeover, allowing you to dial in the end-stop without swapping cylinders or adding external stops. At 250 mm, the stroke is well within the 1000 mm maximum, but long unsupported travel still requires an external guide to prevent side-load wear.
Remember that the rear adjuster is a travel stop, not a lock; the SAIJ will not hold a load without live air pressure. For fail-safe load holding, consider the SAIL or BSAI series. To match this ISO 15552 replacement, verify the 250 mm stroke, 40 mm adjust, PT G1/8 port, and non-magnetic rod.
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 SAIJ32AX250-40 FAQ
At 0.5 MPa, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at its maximum 0.9 MPa operating pressure.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke by up to 40 mm. This creates a usable travel window of 210 to 250 mm, enabling fine-tuning of the end position without replacing the cylinder.
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