Airtac Adjustable Cylinder SAIJ32 SAIJ32BX900-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX900-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX900-40
The AirTAC SAIJ32X900-40 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stopper that allows you to dial back the stroke by up to 40 mm. This creates a usable travel window of 860-900 mm, enabling precise end-position tuning at commissioning without swapping out the actuator or adding external stops. It features a SUS304 stainless steel rod and PT tapered port threads, making it highly suitable for environments where corrosion resistance is a priority.
Within its 32 mm bore, this actuator generates 402 N of push thrust and 345 N of pull thrust at a 0.5 MPa operating pressure. The extruded aluminum barrel includes sensor grooves on both sides, and because it is an adjustable-stroke variant, the mounting set is focused on Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations. The rear adjuster acts purely as a travel stop to set the retract end position, meaning it does not hold the load dynamically without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX900-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX900-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 900 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 SAIJ32BX900-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×900 | 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 SAIJ32BX900-40 Is Used
Product Changeover Dials
Quickly fine-tune the retract end-position by up to 40 mm when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders.
Long-Stroke Assembly
Ideal for 900 mm travel automated handling where the exact end-stop must be dialed in perfectly during initial commissioning to prevent overtravel crashes.
Corrosive Environment Actuation
The SUS304 stainless steel rod material provides an extra layer of protection for actuators deployed in wash-down or mildly corrosive industrial settings.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX900-40 the Right Cylinder?
Choose this 32 mm bore model when your application requires 402 N of push force at 0.5 MPa; stepping down is not an option in the SAIJ series, but stepping up to the 40 mm bore yields 628 N if your payload increases. An adjustable stroke is specifically chosen over a fixed SAI cylinder when you need variable end-stops for product changeovers or fine-tuning during machine setup. For any load-holding requirements without continuous air pressure, this cylinder is not a lock—consider an AirTAC SAIL or BSAI series instead.
At a 900 mm stroke, the 12 mm diameter rod and M10x1.25 rod thread are highly susceptible to side-loading and sagging. An external guide rail must be used to support the load and prevent binding. To replace an ISO 15552 cylinder of the same dimensions, match the 32 mm bore, 900 mm stroke, 40 mm adjustment range, PT port threads, and the appropriate mounting accessory from the supported set.
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 SAIJ32BX900-40 FAQ
At 0.5 MPa, this 32 mm bore cylinder provides 402 N of push thrust and 345 N of pull thrust. At 0.9 MPa, the push force increases to 724 N. The operational speed range is 30-800 mm/s.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the effective travel from the nominal 900 mm down to as little as 860 mm. This provides a usable 860-900 mm window for fine-tuning the end position without changing the cylinder itself.
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