Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 20mm 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
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20S
The AirTAC SAIJ100X20-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 20 mm nominal stroke that can be dialed back by up to 20 mm, providing a highly precise 0-20 mm usable travel window for exact end-position tuning. Delivering 3927 N of push force at 0.5 MPa, this bore size handles substantial loads while offering fine clearance adjustments during machine commissioning.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and fluid control is managed via a G1/2 port. The rear adjuster acts purely as a travel stop to set the retraction end, meaning it cannot hold the load dynamically without continuous live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAIJ100BX20-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×20 | 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 SAIJ100BX20-20S Is Used
Short-Stroke Clamping
Ideal for high-force clamping stations where the exact 0-20 mm contact position must be dialed in perfectly to accommodate varying material thicknesses without retooling.
End-Position Tuning
Allows operators to fine-tune the retraction end-stop during machine commissioning, ensuring precise mechanical clearance before finalizing the setup.
Sensor Integration
The integrated -S magnet works seamlessly with CMSE reed and DMSE solid-state sensors mounted in the dual side grooves for accurate position feedback.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20S the Right Cylinder?
Select this 100 mm bore cylinder when an application demands high force alongside strict, variable end-stop control within a very short 0-20 mm range. If the 3927 N push force at 0.5 MPa exceeds your requirement, stepping down to an 80 mm bore yields 2513 N, whereas moving up to a 125 mm bore provides 6136 N. The adjustable stroke is chosen over a fixed SAI cylinder when you need to fine-tune the retraction point on the fly without adding external stops or swapping components.
Because the nominal stroke is only 20 mm, side-load risks from an unsupported rod are minimal, though the robust 25 mm rod and M20x1.5 thread handle high axial stress effectively. For load-holding without live air pressure, this cylinder is insufficient as the rear adjuster is not a lock; consider an AirTAC SAIL or BSAI cylinder instead. This SKU uses PT tapered port threads and supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100BX20-20S FAQ
At a standard 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. It can deliver up to 7068 N of push force at its maximum 0.9 MPa pressure.
The rear adjusting screw acts as a mechanical stop that allows you to trim the effective stroke back from its 20 mm nominal length, providing a usable travel window of 0-20 mm. This stop only sets the travel end and does not lock or hold the load without live air pressure.
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