Airtac SAIJ40 Adjustable Cylinder SAIJ40AX45-40
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX45-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 45mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke45 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX45-40
The AirTAC SAIJ40X45-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 45mm stroke but features a 40mm adjustment range, creating a highly versatile 5 to 45mm usable travel window. This unit includes a SUS420J2 stainless steel rod and PT tapered port threads.
The rear adjustment screw allows operators to dial in the exact end-of-stroke position during commissioning without adding external stops. The adjuster functions strictly as a travel stop and does not hold the load without live air pressure. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. For load-holding requirements without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX45-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX45-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX45-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SAIJ40AX45-40 Is Used
Machine Changeovers
Quickly modify the retract end-stop to accommodate varying product sizes on a packaging line without changing the cylinder.
Position Calibration
Fine-tune the 5 to 45mm travel window during initial commissioning to perfect the seating depth of a pressing operation.
Variable End Stops
Adjust the effective stroke on the fly for multi-format assembly fixtures requiring different clamping distances.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX45-40 the Right Cylinder?
Select this 40mm bore cylinder when an application requires fine-tuning the retract position across a 5 to 45mm window. The 16mm rod and M12x1.25 thread offer good side-load resistance, but external guides are recommended for any lateral loads. The rear adjuster is a stop, not a lock. To match this ISO 15552 replacement, specify a 40mm bore, 45mm stroke, 40mm adjustment, PT port, and SUS420J2 rod material. No magnet is specified for sensors.
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 SAIJ40AX45-40 FAQ
The rear adjuster screw lets you shorten the nominal 45mm stroke by up to 40mm, creating a usable travel window of 5 to 45mm. The adjuster acts as a mechanical stop for end-position tuning and does not hold the load without air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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