Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-75S 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 SAIJ100BX400-75S
The AirTAC SAIJ100X400-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 325-400 mm usable travel window, allowing you to dial back the 400 mm nominal stroke by up to 75 mm during commissioning. The B-code rod is SUS304 stainless steel, and the -S magnet enables position sensing via CMSE reed or DMSE solid-state switches.
The external adjusting screw acts solely as a travel stop to fine-tune the end position without adding external stops or swapping cylinders. It is not a lock; the cylinder cannot hold loads without live air. SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR options found on other series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75S |
|---|---|
| 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 SAIJ100BX400-75S
| 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 SAIJ100BX400-75S Is Used
Machine Setup & Changeover
Fine-tune the 325-400 mm travel window during machine commissioning to dial in exact end positions for new product runs without swapping cylinders.
Variable End-Stop Actuation
Adjust the rear stopper up to 75 mm to accommodate different package sizes on a sorting line, providing flexible end-position control.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-75S the Right Cylinder?
The 75 mm adjustment window is ideal for product changeovers on a line, letting you set variable end-stops on the fly. For load-holding without continuous air pressure, select SAIL or BSAI instead, as the SAIJ adjuster only decelerates travel. This 400 mm stroke is standard for this bore.
Because this model has a 400 mm stroke, the 25 mm rod and M20x1.5 thread carry substantial side loads, but long unsupported strokes still require an external guide to prevent binding. This SKU includes a -S magnet and PT tapered ports (G1/2). When replacing an ISO 15552 cylinder, match the 100 mm bore, 400 mm stroke, 75 mm adjustment, PT port, and mounting style.
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 SAIJ100BX400-75S FAQ
The rear adjuster screw lets you shorten the 400 mm nominal stroke by up to 75 mm, creating a 325-400 mm usable travel window. The adjuster acts as a mechanical stop to fine-tune end positions and is not a lock.
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