Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 900mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke900 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10
The AirTAC SAIJ40X900-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates an 890 to 900 mm usable travel window. Delivering 628 N of push force at 0.5 MPa, it utilizes a SUS304 stainless steel rod for superior corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides.
This adjustable model allows you to fine-tune the retract end-position at commissioning without adding external stops. The 16 mm rod and M12x1.25 thread provide a robust interface, while the rear adjuster functions strictly as a travel stop, not a load-holding lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX900-10 Is Used
Machine Changeover
Dial in the 890-900 mm retract position precisely when switching product sizes, eliminating the need to physically swap cylinders or reposition external hard stops.
Long-Stroke Diverting
Provides reliable actuation for conveyor sorting arms, where the 10 mm end-position trim perfectly compensates for minor mechanical drift over long 900 mm travels.
Assembly Pressing
Applies 879 N of push force at 0.7 MPa for light-duty pressing tasks, using the rear adjuster to set exact contact depth without complex programming.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX900-10 the Right Cylinder?
Choose this 40 mm bore when an application requires moderate force, offering 628 N push at 0.5 MPa, which scales up to 879 N at 0.7 MPa. If your setup demands less force, the 32 mm bore provides 402 N at 0.5 MPa. The 10 mm adjustment range is ideal for dialing in exact end-stops during machine changeover rather than swapping a fixed-stroke SAI cylinder.
Because the 900 mm stroke is long and unsupported, an external guide is required to prevent excessive side-loading on the rod. To replace an ISO 15552 cylinder, match the 40 mm bore, 900 mm stroke, PT port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the rear adjuster cannot hold loads without live air; for pilot-operated locking, consider the SAIL or BSAI series.
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 SAIJ40 Adjustable Cylinder SAIJ40BX900-10 FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke by up to 10 mm, creating an 890 to 900 mm travel window. It only sets the end position and does not lock the load without live air pressure.
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