Airtac SAIJ80 Adjustable Cylinder SAIJ80AX165-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX165-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 165mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ80 Adjustable Cylinder SAIJ80AX165-50S
By turning the external rear screw, you can trim the nominal 165 mm stroke back by up to 50 mm, creating a precise 115-165 mm usable travel window for exact end-position tuning. This eliminates the need to swap cylinders or bolt on external stops during machine commissioning.
This SKU features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and includes a magnet (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches. The 25 mm rod and M20x1.5 thread provide robust resistance to side loads, while the extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The adjuster acts purely as a travel stop and works alongside the variable air cushions at both ends to decelerate the load; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX165-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX165-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 165 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80AX165-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×165 | 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 SAIJ80AX165-50S Is Used
Product Changeover
Dial in the 115-165 mm travel window during packaging line size changes without replacing the cylinder or adding external stops.
End-Position Tuning
Use the rear adjuster to precisely set the retract end-position during machine commissioning for high-accuracy assembly tasks.
Sensor Mounting
Leverage the -S magnet with DMSE electronic sensors in the dual barrel grooves to confirm position across the adjusted travel range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX165-50S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your application requires variable end-stops or fine-tuning during product changeover, as it allows on-the-fly adjustments without hardware swaps. If your thrust requirements are lower, stepping down to a 63 mm bore yields 2805N at 0.9 MPa; stepping up to a 100 mm bore provides 7068N for heavier loads. For this 165 mm stroke, side-load is minimal, but longer unsupported strokes would require an external guide.
When specifying an ISO 15552 replacement match, confirm a bore of 80, stroke of 165, adjustment of 50, PT tapered port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR. Remember that for load-holding without live pressure, you must look to the SAIL pneumatic lock, BSAI clamp-lock, or an external rod lock, as the SAIJ adjuster is not a brake.
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 SAIJ80AX165-50S FAQ
It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 165 mm stroke by up to 50 mm, providing a usable travel window of 115-165 mm. It sets the end-position but does not lock or hold the load without continuous air pressure.
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