Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40
The AirTAC SAIJ100X300-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position. It provides a usable stroke window of 260 to 300 mm, enabling precise positioning changes during commissioning or product changeovers without adding external stops.
Delivering 5497N of push force and 3681N of pull force at 0.7 MPa, this 100mm bore actuator is built for demanding tasks. This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100BX300-40 Is Used
Variable End-Stop Positioning
Dial in the exact 260-300mm retraction point during machine setup to accommodate different material thicknesses without swapping out the entire actuator.
Product Changeover Diverter
Quickly adjust the stroke by up to 40mm on a packaging line to handle varying box sizes on the fly, ensuring precise diverting forces.
Heavy Duty Press Toning
Leverage the 5497N push force at 0.7MPa to securely seat components, using the rear screw to finely tune the final pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX300-40 the Right Cylinder?
Choose this 100mm bore cylinder when a 50mm bore (1374N push at 0.5 MPa) lacks the power for heavy moving loads, but a 125mm bore is physically oversized. The adjustable 260-300mm travel window is ideal for machines requiring variable end-stops between product sizes. When specifying your replacement, match the 100mm bore, 300mm nominal stroke, 40mm adjustment, PT port thread, SUS304 (B) rod material, and standard mounting (no -S magnet). Because the stroke is 300mm, an external guide is recommended to prevent rod side-loading and premature wear. Remember that the rear adjuster acts only as a travel stop; for load-holding without live air pressure, select an AirTAC SAIL or BSAI cylinder. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
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 SAIJ100BX300-40 FAQ
A rear external adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke from its 300mm nominal length by up to 40mm. This provides a usable travel window of 260-300mm. The adjuster only sets the travel end and does not lock or hold the load without continuous air pressure.
At an operating pressure of 0.7 MPa, the SAIJ100X300-40 generates a push force of 5497N and a pull force of 3681N. It can achieve a maximum push force of 7068N at 0.9 MPa.
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