Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-20
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX80-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 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 SAIJ40AX80-20
The AirTAC SAIJ40X80-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 60-80 mm, allowing you to dial back the 80 mm nominal stroke by up to 20 mm during commissioning.
This model uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and accepts PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting. Remember, the rear adjuster acts only as a travel stop to fine-tune the end position without requiring external stops; it does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-20 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAIJ40AX80-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SAIJ40AX80-20 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 60-80 mm window during machine setup to accommodate varying material thicknesses without hardware changes.
Product Changeover
Quickly adjust the stroke end-point on the production line when switching between different product sizes, minimizing downtime.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-20 the Right Cylinder?
Choose this 40 mm bore when you need more thrust than the 32 mm version (402 N at 0.5 MPa) but want a smaller footprint than the 50 mm option (982 N). The adjustable stroke is perfect for product changeovers, letting you set variable end-stops on the fly instead of swapping a fixed-stroke SAI cylinder. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as this adjuster is not a lock. This SAIJ40X80-20 is dimensionally interchangeable per ISO 15552, featuring a G1/4 port, PT thread, and mounting options limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ40AX80-20 FAQ
At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw lets you shorten the effective travel from 80 mm down to 60 mm, creating a 60-80 mm usable window. This allows fine-tuning of the end position at commissioning without replacing the cylinder.
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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.
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