Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-30
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-30 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 SAIJ100BX400-30
It features a SUS304 stainless steel rod and PT tapered ports. By integrating an external stopper at the rear, this model allows you to shorten the effective stroke by up to 30 mm, creating a precise 370-400 mm usable travel window for exact end-position tuning.
Because it is an extruded aluminum profile cylinder, it is dimensionally interchangeable per ISO 15552 without utilizing a tie-rod construction. The rear adjuster acts purely as a travel stop to fine-tune deceleration and position at commissioning; it does not lock the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-30 |
|---|---|
| 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 SAIJ100BX400-30
| 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 SAIJ100BX400-30 Is Used
Product Changeovers
Dial in the 370-400mm travel window during format changes on a packaging line, avoiding the need to physically swap cylinders for different carton sizes.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to perfectly seat heavy 100mm bore components without adding external mechanical stops.
Variable End Stops
Provide adjustable retract limits on automated assembly equipment, allowing operators to trim up to 30mm of stroke for precise tooling alignment.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-30 the Right Cylinder?
The adjustable stroke is selected over a fixed SAI cylinder to allow product-size changeovers on a line without swapping the actuator or adding external stops. When matching an ISO 15552 replacement, verify the 400mm stroke, 30mm adjustment, PT G1/2 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Since the 400mm stroke is substantial, the 25mm rod diameter and M20x1.25 thread provide rigidity, but an external guide is still recommended to handle side loads over this long unsupported travel. Note that the rear adjuster and air cushions only set the travel end and do not function as a brake.
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 SAIJ100BX400-30 FAQ
The rear adjuster acts as a mechanical stop that allows you to trim the nominal 400mm stroke back by up to 30mm, resulting in a usable travel window of 370-400mm. It sets the end position but does not hold the load without live air pressure.
At 0.9 MPa, the push force increases to 7068N.
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Standard models are processed and dispatched in 3-5 business days.
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