Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-30
The AirTAC SAIJ40X130-30 is a double-acting, single-rod profile cylinder with a rear stroke adjuster. It features a 40mm bore and a 130mm nominal stroke that can be dialed back by up to 30mm, yielding a precise 100-130mm usable travel window for commissioning. Delivering 628N of push force at 0.5MPa, it handles robust actuation tasks while allowing variable end-position tuning without external stops.
Built to ISO 15552 mounting interface dimensions, this extruded aluminum barrel unit omits tie-rod construction. It includes PT tapered ports (G1/4) and a SUS304 stainless steel rod for superior corrosion resistance. The rear screw acts as a travel stop to set the retract end position, but it does not lock the load without live air pressure. Sensors require a magnet, which is absent on this base configuration.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 130 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 SAIJ40BX130-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×130 | 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 SAIJ40BX130-30 Is Used
Machine Changeover
Dial in the 100-130mm travel window during product size transitions to set new retract end positions rapidly without physically swapping cylinders.
End-Position Tuning
Fine-tune the final retract position at commissioning using the rear stopper, absorbing mechanical setup variances without adding external stops.
Corrosive Actuation
Leverage the SUS304 stainless steel rod in washdown or chemically exposed environments where a standard carbon steel rod would fail prematurely.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-30 the Right Cylinder?
Choose this 40mm bore when 32mm (402N push at 0.5MPa) lacks thrust, but 50mm (982N) is oversized. An adjustable stroke is selected over a fixed SAI when a machine requires fine end-position tuning during commissioning or product changeover, allowing you to trim the travel window from 130mm down to 100mm without swapping the cylinder.
For an ISO 15552 replacement, match the 40mm bore, 130mm stroke, 30mm adjustment, PT port thread, and SUS304 (B) rod material. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 130mm stroke is under 300mm, side-load stress is minimal, though long unsupported loads still need an external guide. If you need to hold position without live air, use SAIL or BSAI, as the rear adjuster is only a stop.
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 SAIJ40BX130-30 FAQ
At 0.5MPa operating pressure, it provides 628N of push force and 528N of pull force. At 0.7MPa, the push force increases to 879N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 130mm nominal stroke by up to 30mm. This creates a 100-130mm usable travel window, but it only sets the end position; it does not lock the load without live air.
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