Airtac SAIJ100 Adjustable Cylinder SAIJ100BX40-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX40-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 40mm 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
- Stroke40 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 SAIJ100BX40-20S
The AirTAC SAIJ100X40-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 20 to 40 mm. The barrel features sensor grooves on both sides, and this -S variant includes a magnet for direct mounting of CMSE reed or DMSE electronic solid-state switches.
This model uses a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads (G1/2). The rear adjuster acts purely as a mechanical stop to fine-tune the retract position during setup, meaning it cannot hold a load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX40-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX40-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAIJ100BX40-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SAIJ100BX40-20S Is Used
Product Changeovers
Dial in the 20-40 mm travel window instantly on the production line when switching to a new package size, avoiding the need to physically swap out the cylinder.
Sensor-Ready Positioning
Utilize the built-in magnet with DMSE electronic sensors to confirm the adjusted end position in automated assembly lines, ensuring repeatable setup accuracy.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX40-20S the Right Cylinder?
The 20 mm adjustment range is perfect for dialing in exact end positions during machine commissioning or product changeovers without swapping cylinders. When replacing an ISO 15552 unit, match the 100 mm bore, 40 mm stroke, PT port, and -S magnet.
Because the stroke is short (40 mm), side-loading on the 25 mm rod is minimal, but always ensure the load is guided to prevent binding. Remember that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. The operating speed ranges from 30 to 800 mm/s.
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 SAIJ100BX40-20S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective stroke by up to 20 mm. This creates a usable travel window of 20 to 40 mm, letting you fine-tune the retract position without changing the cylinder.
At 0.7 MPa, the push force increases to 5497 N.
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