Airtac SAIJ40 Adjustable Cylinder SAIJ40AX55-40
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX55-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 55mm 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
- Stroke55 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 SAIJ40AX55-40
The AirTAC SAIJ40X55-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position at commissioning. With a nominal 55 mm stroke and a 40 mm adjustment range, it provides a usable travel window of 15 to 55 mm, letting you dial in the exact retract distance without swapping the cylinder or adding external stops.
It features a SUS420J2 stainless steel rod for enhanced corrosion resistance, PT tapered port threads, and variable air cushions at both ends. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX55-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX55-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 SAIJ40AX55-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 SAIJ40AX55-40 Is Used
Machine Changeover
Quickly modify the retract end-stop during product size changeovers on packaging lines without disassembling the actuator.
Variable End-Stop Setup
Dial in the exact 15 to 55 mm travel distance required for delicate seating or clamping tasks during initial commissioning.
Precision Positioning
Fine-tune the final position of pick-and-place movements to compensate for mechanical wear or tooling variations.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX55-40 the Right Cylinder?
The 16 mm rod and M12x1.25 thread offer good side-load capacity, but because the total stroke is short, side-load risks are minimal compared to longer travel units.
For ISO 15552 interchangeability, match the 40 mm bore, 55 mm stroke, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2—omitting FB, CA, CB, CR). Note that this unit lacks a magnet for sensors; if position feedback is needed, consider an external switch or a different configuration. Because the rear adjuster is a stop and not a lock, use a SAIL or BSAI cylinder if you need to hold the load safely without continuous air pressure.
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 SAIJ40AX55-40 FAQ
At the maximum 1.0 MPa pressure, it delivers 128 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm. For this 55 mm nominal stroke model, it creates an adjustable travel window of 15 to 55 mm, acting as a mechanical stop rather than a load lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40AX55-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.