Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX155-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 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 SAIJ80BX155-40S
The AirTAC SAIJ80X155-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to fine-tune the travel window down from 155 mm to a minimum of 115 mm. This bore features a robust 25 mm carbon steel core, but this specific SKU is built with a SUS304 stainless steel rod (code B) for superior corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides, and because this is a -S variant, it contains a magnet for position detection via AirTAC CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a travel stop to set the retract end-position; it does not lock or hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80BX155-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80BX155-40S Is Used
Machine Changeover
Dial in the 115-155 mm travel window during product size changes without replacing the cylinder or adding external shims.
Corrosive Actuation
The SUS304 stainless steel rod provides reliable push force in washdown or mildly corrosive manufacturing environments.
End-Stop Tuning
Use the rear adjuster to fine-tune the retract position at commissioning, compensating for mechanical tolerance stack-up.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX155-40S the Right Cylinder?
Selecting this 80 mm bore over a 63 mm unit steps the push force up significantly from 1559 N to 2513 N at 0.5 MPa, whereas stepping up to a 100 mm bore yields 3927 N. The 40 mm adjustment range is ideal for product changeovers on a line where the exact retract distance varies slightly, eliminating the need to machine external spacers. When replacing an ISO 15552 cylinder, match the 155 mm stroke, 40 mm adjuster, PT tapered port thread, and the -S magnet requirement. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
Although 155 mm is a moderate stroke, if your application approaches or exceeds 300 mm, you must use an external guide to prevent excessive side-loading on the rod. The standard speed range for this bore is 30-800 mm/s, adjustable via the variable air cushions at both ends.
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 SAIJ80BX155-40S FAQ
At 0.9 MPa, the push force increases to 4523 N.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke by up to 40 mm, creating a usable travel window of 115 to 155 mm. It only sets the travel end and does not hold the load without live air.
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