Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-40S
The AirTAC SAIJ80X45-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 45 mm nominal travel back by up to 40 mm, yielding a highly precise 5 to 45 mm usable window. Delivering 2513 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds between 30 and 800 mm/s.
Because the rear screw acts purely as a mechanical stop to fine-tune the end position during commissioning, it does not hold the load without live air pressure. This magnet-equipped unit supports AirTAC CMSE reed and DMSE electronic sensors along the dual-side barrel grooves, and it uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) that omits FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 45 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 SAIJ80BX45-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX45-40S Is Used
Short-Stroke Calibration
Dial in exact clamping distances between 5 and 45 mm during machine setup, using the rear adjuster to fine-tune the end position without external stops.
Product Changeover
Rapidly adapt to different part sizes on a production line by adjusting the stroke window on the fly, leveraging 2513 N of thrust to seat components firmly.
Corrosive Assembly Lines
Utilize the SUS304 stainless steel rod and 0.15 to 1.0 MPa operating range in humid or washdown manufacturing environments requiring precise actuation.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX45-40S the Right Cylinder?
Select this 80 mm bore when an application requires more force than a 63 mm cylinder (1559 N push at 0.5 MPa) but has a tight physical envelope requiring a very short, finely tuned stroke. The adjustable 5 to 45 mm travel window is ideal for product changeovers, allowing operators to dial in the exact end-stop without swapping cylinders or adding external stops. For load-holding without continuous air pressure, a plain SAIJ is insufficient since the adjuster is not a lock; you should instead evaluate the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 45 mm stroke, 40 mm adjustment range, PT tapered port threads, and the -S magnet option. The robust 25 mm rod and M20x1.5 thread handle high side loads well, though any long unsupported stroke still necessitates an external guide.
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 SAIJ80BX45-40S FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the 45 mm nominal stroke by up to 40 mm, creating a usable travel window of 5 to 45 mm. It sets the end position but does not lock the load without live air pressure.
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