Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-20 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 SAIJ100BX400-20
It features a SUS304 stainless steel rod and PT tapered ports. By turning the rear screw, you achieve a usable travel window of 380 to 400 mm, allowing precise end-position tuning without swapping hardware.
Because the nominal 400 mm stroke is substantial, the 25 mm rod diameter and M20x1.5 thread provide necessary rigidity, though an external guide is recommended to manage side loads. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is specified later. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20 |
|---|---|
| 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 SAIJ100BX400-20
| 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 SAIJ100BX400-20 Is Used
Machine Changeovers
Dial in the 380-400 mm end position during product family transitions without disassembling the pneumatic setup or adding spacer blocks.
End-Stop Tuning
Fine-tune the retract stroke on machining fixtures to compensate for mechanical wear or tooling offsets directly at the cylinder.
Variable Product Divergence
Adjust the stroke window on packaging lines to handle different carton sizes accurately using the rear stopper screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20 the Right Cylinder?
The 20 mm adjustment range is ideal for product-size changeovers, letting you dial in the exact 380-400 mm end stop at commissioning rather than machining external stops. For fixed-travel tasks, a standard SAI cylinder suffices, but the SAIJ variant excels where fine-tuning is required.
Note that the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for dead-air load holding, consider an SAIL or BSAI cylinder. To replace an ISO 15552 unit, match the 100 mm bore, 400 mm stroke, 20 mm adjustment, PT ports, and the required mounting bracket. Given the 400 mm stroke, ensure adequate external guiding to prevent rod binding.
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 SAIJ100BX400-20 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 400 mm nominal stroke down to 380 mm, creating a 380-400 mm usable window for fine-tuning at commissioning.
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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.
Related AirTAC SAI Cylinders
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