Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-50 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 SAIJ100BX400-50
The AirTAC SAIJ100X400-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 400 mm travel by up to 50 mm for a precise 350-400 mm usable window. Built with an extruded aluminum barrel, it delivers robust thrust, pushing with 3927 N at 0.5 MPa and reaching 7068 N at 0.9 MPa. This bore size utilizes a G1/2 port and a 25 mm piston rod to handle substantial loads.
This specific configuration features a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune the retract position during commissioning; it is not a locking device and cannot hold a load without continuous air pressure. For position holding without live air, consider an external rod lock or the SAIL series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50 |
|---|---|
| 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 SAIJ100BX400-50
| 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 SAIJ100BX400-50 Is Used
Product Changeovers
Quickly shift the retract end-stop from 400 mm to 350 mm during production line changeovers without disassembling machinery or adding spacers.
Machine Setup Tuning
Fine-tune the final end position during initial commissioning to dial in exact contact points, absorbing mechanical tolerances on the fly.
Variable End Stops
Provide a customizable travel window for automated equipment that processes multiple part sizes on the same fixture.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-50 the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a line, letting you shift the end-stop from 400 mm back to 350 mm without swapping the cylinder or adding external stops. When replacing an ISO 15552 cylinder, match the 100 mm bore, 400 mm stroke, 50 mm adjustment, G1/2 port, and mounting style. Note that SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options.
Because the 400 mm stroke is relatively long, the 25 mm rod diameter provides rigidity, but an external guide is still recommended to prevent excessive side-loading on the piston. The cylinder operates at speeds of 30-800 mm/s. Without a magnet specified, it will not host CMSE or DMSE sensors out of the box.
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 SAIJ100BX400-50 FAQ
If you increase the operating pressure to 0.9 MPa, the push force reaches 7068 N.
The rear mechanical stopper allows you to reduce the 400 mm nominal stroke by up to 50 mm, creating a usable travel window of 350-400 mm. It acts as a travel stop and 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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