Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- 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 SAIJ100 Adjustable Cylinder SAIJ100BX400-50S
It features a SUS304 stainless steel rod and a PT tapered port. By integrating a 50mm adjustment mechanism, this unit provides a usable travel window of 350 to 400mm, allowing technicians to dial in exact retract end positions without swapping hardware.
Because it carries the -S magnet option, this cylinder operates seamlessly with AirTAC CMSE reed and DMSE electronic sensors housed in the dual-side extruded barrel grooves. The rear stopper solely dictates travel length and deceleration alongside the standard air cushions; it is not a locking device, so live air is required to maintain the load position.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 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 SAIJ100 Adjustable Cylinder SAIJ100BX400-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX400-50S Is Used
Product Changeovers
Quickly reconfigure the 350-400mm travel window on packaging lines when switching to different carton sizes, eliminating the need to physically swap out cylinders.
Machine Setup Calibration
Fine-tune the retract end-position during initial commissioning to achieve exact alignment of heavy tooling without machining custom external spacers.
Variable End Stops
Provide adaptable stopping points for diverter mechanisms on material handling conveyors, accommodating varied product lengths on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50S the Right Cylinder?
Selecting this 100mm bore over a smaller 80mm variant jumps the thrust from 2513N to 3927N at 0.5 MPa, providing the necessary power for heavier fixtures. The 50mm adjustable window is chosen over a fixed-stroke SAI when a production line requires frequent product-size changeovers, enabling rapid end-stop tuning at commissioning. For load-holding without continuous air pressure, an external rod lock or a related SAIL pneumatic-lock cylinder is required, as the SAIJ adjuster acts only as a mechanical stop.
To match this exact ISO 15552 footprint for a replacement, verify the 100mm bore, 400mm nominal stroke, 50mm adjustment range, PT G1/2 port, and the -S magnet. Given the 400mm stroke, the 25mm rod diameter handles standard axial loads well, but long unsupported travel demands an external guide to prevent excessive side-loading and premature seal wear.
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 SAIJ100 Adjustable Cylinder SAIJ100BX400-50S FAQ
The rear adjuster acts as a mechanical stop that shortens the nominal 400mm stroke by up to 50mm, creating a usable travel window of 350-400mm. It sets the end position but does not lock the load without live air pressure.
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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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