Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX400-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 400mm 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
- Stroke400 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 SAIJ80BX400-50S
The AirTAC SAIJ80X400-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 400 mm nominal travel back by up to 50 mm. This creates a 350-400 mm usable window, allowing precise end-position tuning during commissioning without swapping hardware.
Equipped with a SUS304 stainless steel rod and PT tapered ports, this variant includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel retains standard ISO 15552 mounting dimensions. Note that the rear adjuster acts strictly as a travel stop for deceleration, not a load-holding lock; true load holding without live air requires a SAIL or BSAI variant.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 400 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 SAIJ80BX400-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 SAIJ80BX400-50S Is Used
Product Size Changeovers
Dial in the 350-400 mm retract distance during format changes on packaging lines, using the rear screw to set new end positions without adding external mechanical stops.
Variable End-Stop Assembly
Set precise lower travel limits on automated assembly presses, relying on the 50 mm adjustment window to accommodate different part heights on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-50S the Right Cylinder?
The adjustable 350-400 mm window is ideal for product changeovers on a line, letting operators dial in the exact retract distance rather than machining external stops. For fixed-position tasks without setup variations, a standard SAI cylinder is sufficient.
Because the 400 mm stroke is substantial, the 25 mm rod and M20x1.5 thread provide rigidity, but an external guide is recommended to prevent excessive side-loading on long travels. To match this ISO 15552 replacement exactly, specify bore 80, stroke 400, 50 mm adjustment, PT ports, SUS304 rod, and the -S magnet. Remember that neither the rear stopper nor the air cushions will hold a load safely without continuous air pressure.
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 SAIJ80BX400-50S FAQ
It reaches a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the 400 mm nominal stroke by up to 50 mm, providing a usable travel window of 350-400 mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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