Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 450mm 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
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-20S
The AirTAC SAIJ80X450-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 430-450 mm window. Delivering 2513 N of push force at 0.5 MPa, it handles substantial workloads while maintaining standard ISO 15552 mounting dimensions. This variant includes an SUS420J2 stainless steel rod and a built-in magnet for position sensing.
Because the nominal 450 mm stroke exceeds 300 mm, the 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading on the piston. The rear adjustment screw acts purely as a mechanical stop for end-position tuning during commissioning; it does not lock the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80AX450-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SAIJ80AX450-20S Is Used
Variable End-Stop Machining
Dial in the exact 430-450 mm clamping position on machining fixtures without machining new hard stops or altering the cylinder mounting.
Product Changeover Diverter
Quickly adjust the retract distance by up to 20 mm on a packaging line to accommodate different carton sizes on the fly.
Commissioning Fine-Tuning
Trim the stroke precisely during machine setup to perfect the timing of a 2513 N push operation without replacing the actuator.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-20S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires a 450 mm stroke but needs precise 430-450 mm end-position tuning without adding external stops or swapping cylinders during product changeovers. If your thrust requirements are lower, stepping down to a 63 mm bore provides 1559 N of push force at 0.5 MPa, whereas stepping up to a 100 mm bore yields 3927 N.
When ordering a replacement, verify the 450 mm stroke, 20 mm adjustment range, PT tapered port threads, and the -S magnet option for CMSE reed or DMSE electronic sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR mounts. Always support the rod end on long strokes to manage side loads.
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 SAIJ80AX450-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a usable travel window of 430-450 mm. The adjuster is a mechanical stop for end-position tuning and does not hold the load without continuous air pressure.
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