Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S
The AirTAC SAIJ80X800-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 760-800 mm, letting you dial back the 800 mm nominal stroke by up to 40 mm. This 80 mm bore generates 2513 N of push force at 0.5 MPa and 4523 N at 0.9 MPa, making it robust for heavy loads.
Equipped with a SUS420J2 stainless steel rod and a -S magnet, it supports AirTAC CMSE reed and DMSE electronic sensors via dual-sided barrel grooves. The PT tapered ports and 36 mm cushions manage deceleration, while the rear stopper acts purely as a travel limit, not a load lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX800-40S Is Used
Long-Stroke Press Tuning
Dial in the exact 760-800 mm end-position during press setup, compensating for material thickness variations without swapping cylinders.
Variable Product Diverter
Adjust the retract stroke by up to 40 mm on the fly to accommodate different package sizes moving down a high-speed packaging line.
Machine Changeover
Rapidly reset the travel limit for new product runs, using the rear stopper to fine-tune the end position instead of repositioning hard mounts.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX800-40S the Right Cylinder?
Choose this adjustable-stroke model when a fixed 800 mm SAI cylinder lacks the flexibility needed for machine changeovers. If your application requires less force, the 63 mm bore offers 1559 N at 0.5 MPa; for heavier demands, the 100 mm bore provides 3927 N. Because the 800 mm stroke is long, an external guide is recommended to handle side loads on the 25 mm rod.
The rear adjuster fine-tunes the retract end-position at commissioning without adding external stops. It does not hold the load without live air—for pilot-operated locking, consider the SAIL or BSAI series. This SAIJ model uses the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting set, omitting FB and rear pivot options.
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 SAIJ80 Adjustable Cylinder SAIJ80AX800-40S FAQ
The rear adjuster screw lets you shorten the 800 mm nominal stroke by up to 40 mm, providing a usable travel window of 760-800 mm. The adjuster functions as a mechanical stop and does not lock the load without continuous air pressure.
At 0.5 MPa it provides 2513 N of push force and 2268 N of pull force. At 0.9 MPa, the push force increases to 4523 N. The operating speed range for this 80 mm bore is 30-800 mm/s, supported by 36 mm air cushions at both ends.
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