Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX120-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 120mm 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
- Stroke120 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 SAIJ80BX120-40
The AirTAC SAIJ80X120-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 80 to 120 mm, letting you dial back the nominal 120 mm stroke by up to 40 mm during commissioning without adding external stops.
This unit uses a SUS304 stainless steel rod (option B) for superior corrosion resistance and features PT tapered port threads (G3/8). The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts purely as a travel stop for end-position tuning, not a lock to hold loads without live air.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAIJ80BX120-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SAIJ80BX120-40 Is Used
Variable End-Stop Positioning
Fine-tune the retract position within the 80 to 120 mm window to accommodate changing material thicknesses on machining fixtures.
Product Changeover Diverter
Quickly adjust the stroke length by up to 40 mm to reroute different package sizes on a conveyor without changing hardware.
Assembly Press Tuning
Dial in the exact pressing depth during machine setup, using the rear stopper to prevent overtravel and ensure consistent assembly force.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX120-40 the Right Cylinder?
The 40 mm adjustment range is ideal for product-size changeovers on a packaging line, allowing you to reposition the end-of-stroke stop in minutes instead of swapping the entire cylinder for a fixed-stroke SAI unit. To match this ISO 15552 cylinder for a direct replacement, verify the 80 mm bore, 120 mm stroke, 40 mm adjust, PT G3/8 port, and SUS304 (B) rod. Since the stroke is 120 mm, side-load is minimal, but always guide long unsupported loads externally. If your process requires the load to be held without live air pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster is only a stop.
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 SAIJ80BX120-40 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 120 mm nominal stroke down to 80 mm. It only sets the end position and provides no load-holding capability without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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