Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75 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 SAIJ40BX130-75
The AirTAC SAIJ40X130-75 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 55 to 130 mm during commissioning. Delivering 628 N of push force at 0.5 MPa, it uses a robust M12x1.25 rod thread and dual air cushions rated for 30 mm to decelerate the load smoothly. This configuration omits the -S magnet, but the extruded aluminum barrel retains sensor grooves on both sides for future automation upgrades.
This SKU is built with a SUS304 stainless steel rod (option B) for superior corrosion resistance in demanding environments. It features PT tapered port threads (G1/8) and operates at speeds between 30 and 800 mm/s. The rear stopper mechanism sets the retract end position without requiring external stops, though it functions purely as a travel limiter and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75 |
|---|---|
| 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 SAIJ40BX130-75
| 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 SAIJ40BX130-75 Is Used
Machine Changeover
Quickly reconfigure the retract end-stop from 55 to 130 mm when switching a packaging line to a different carton size, eliminating the need to physically swap cylinders.
Prototype Positioning
Dial in the exact clamping distance during fixture development, using the rear screw to find the optimal travel distance before finalizing the mechanical setup.
Washdown Automation
Leverage the SUS304 stainless steel rod for light-duty food or pharmaceutical processing tasks where minor surface moisture or washdown chemicals are present.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75 the Right Cylinder?
Select this 40 mm bore actuator when an application demands 628 N push force (528 N pull) at 0.5 MPa, which provides a notable step up from the 32 mm bore (402 N push) without the bulk of the 50 mm bore (982 N push). The 75 mm adjustment range is exceptionally wide, making it ideal for prototyping or machinery that processes varying product sizes, allowing you to dial in the exact end-stop without swapping hardware. For fixed-length requirements where no end-tuning is needed, the standard SAI cylinder is a simpler alternative.
Because the 130 mm stroke is under the 300 mm threshold, side-load risks are moderate, but the 16 mm rod diameter still requires adequate guiding for heavy offset loads. Remember that the rear adjuster acts only as a mechanical stop; it does not lock the piston in place. If the machine loses air pressure and the load must remain stationary, consider the SAIL (air-released lock) or BSAI (clamp-lock) cylinders instead. For ISO 15552 replacement matching, specify the 40 mm bore, 130 mm stroke, 75 mm adjustment, PT port threads, and no magnet.
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 SAIJ40BX130-75 FAQ
The rear of the cylinder features an external stopper screw that lets you shorten the effective stroke by up to 75 mm. This creates a usable travel window of 55 to 130 mm, allowing precise end-position tuning at commissioning without adding external mechanical stops.
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
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