Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-40S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX400-40S 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 SAIJ80BX400-40S
The AirTAC SAIJ80X400-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The integrated -S magnet enables position sensing with AirTAC CMSE reed or DMSE electronic switches. Featuring a SUS304 stainless steel rod and PT tapered ports, it handles demanding environments.
This model features a 400mm nominal stroke that can be fine-tuned down by up to 40mm, creating a precise 360-400mm usable travel window. The external rear screw acts purely as a mechanical stop for end-position tuning during commissioning; it is not a locking device and cannot hold loads without live air. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-40S |
|---|---|
| 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 SAIJ80BX400-40S
| 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 SAIJ80BX400-40S Is Used
Variable End-Stop Machining
Dial in the exact 360-400mm clamping position on machining fixtures without adding external stopper blocks or changing the cylinder.
Product Changeover Diverters
Quickly adjust the retract distance on packaging lines to accommodate different carton sizes using the 40mm rear stroke trim.
Commissioning Fine-Tuning
Trim the effective travel by up to 40mm during initial machine setup to perfectly sync timing without re-mounting hardware.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX400-40S the Right Cylinder?
The adjustable 360-400mm travel window is ideal for machine setups requiring variable end-stops or product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. To replace an ISO 15552 cylinder, match the 80mm bore, 400mm stroke, PT port thread, SUS304 rod, and the -S magnet requirement.
Because the 400mm stroke is substantial, the 25mm rod diameter should be paired with an external guide to prevent excessive side-loading and premature seal wear. Remember that the rear adjuster only decelerates the stroke end; for true load-holding without live air pressure, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ80BX400-40S FAQ
At 0.9 MPa, the push force increases to 4523N.
The rear adjuster screw allows you to shorten the 400mm nominal stroke by up to 40mm, providing a usable travel window of 360-400mm. It acts as a mechanical stop and does not lock the load.
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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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