Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX115-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 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 SAIJ80BX115-40S
The AirTAC SAIJ80X115-40-S is a double-acting ISO 15552 profile cylinder with a rear-mounted stroke adjuster. The built-in adjuster lets you dial back the nominal 115 mm stroke by up to 40 mm, creating a precise 75-115 mm usable travel window for on-the-fly positioning.
This rear screw acts purely as a mechanical stop to set the retraction end-point and works alongside the standard 36 mm air cushions to manage deceleration. It is not a locking mechanism, so the cylinder will not hold a load without live air pressure. For position holding, an external rod lock or related SAIL and BSAI series is required. The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet supports CMSE reed and DMSE solid-state switches.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAIJ80BX115-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAIJ80BX115-40S Is Used
Machine Changeover
Dial in the exact 75 to 115 mm retract position during product size changeovers without swapping out the physical cylinder.
Variable End Stops
Set precise mechanical end-stops for multi-tier tooling plates, using the 40 mm adjustment range to accommodate different part heights.
Commissioning Calibration
Fine-tune the retraction point during initial machine setup to perfect timing and avoid recalculating fixed spacer lengths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-40S the Right Cylinder?
Choose this adjustable model when you need to fine-tune the end-of-stroke position during commissioning or product changeovers without physically swapping the cylinder or adding external stops. If your application requires less force, stepping down to a 63 mm bore provides 1559 N at 0.5 MPa; if you need more clamping power, a 100 mm bore yields 3927 N. To match this ISO 15552 footprint exactly, specify an 80 mm bore, 115 mm stroke, 40 mm adjustment, PT ports, and an -S magnet.
Because the stroke is 115 mm, side-load risks are minimal, but the 25 mm SUS304 rod and M20x1.5 thread provide excellent rigidity and side-load resistance for heavier tooling. Remember that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR brackets.
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 SAIJ80BX115-40S FAQ
The rear adjuster allows you to shorten the 115 mm nominal stroke by up to 40 mm, giving a usable travel window of 75 to 115 mm. The adjuster acts as a mechanical stop for the retract end and works with the 36 mm air cushion to decelerate the load, but it does not lock the position without air pressure.
At the maximum 1.0 MPa pressure, the push force reaches 513 kgf.
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Covers non-human-caused product damage.
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