Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20S
The AirTAC SAIJ100X30-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers robust thrust up to 7068N at 0.9 MPa while providing a 10-30mm usable travel window, letting you dial back the 30mm nominal stroke by up to 20mm. This built-in adjustment eliminates the need for external stops during machine commissioning or product changeovers. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for use with AirTAC CMSE (reed) and DMSE (electronic) switches.
This unit utilizes a SUS304 stainless steel rod for superior corrosion resistance and carries a PT tapered port thread. The rear adjuster acts solely as a travel stop to fine-tune the end position; it does not lock or hold the load without live air. For load-holding requirements without continuous pressure, consider the SAIL or BSAI series. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 30 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 SAIJ100BX30-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SAIJ100BX30-20S Is Used
Machine Changeover
Fine-tune the 10-30mm travel window during product size transitions without physically replacing the cylinder or adding external stopper blocks.
End-Position Trimming
Dial in the exact retract distance on automated equipment, using the rear screw to compensate for mechanical wear or sensor drift over time.
Heavy-Duty Positioning
Leverage the 7068N thrust capacity to move heavy jigs into their final retracted position while relying on the built-in stop for repeatable endpoints.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20S the Right Cylinder?
Choose this 100mm bore when you need heavy force that exceeds the 4523N push capacity of an 80mm cylinder at 0.5 MPa, but want to avoid the larger footprint of a 125mm bore. The adjustable stroke is essential when exact end-of-travel positioning must be fine-tuned on the fly without swapping out a fixed-stroke SAI cylinder. Because the 30mm stroke is relatively short, side-load stress is minimal, though the robust 25mm rod and M20x1.5 thread handle high axial loads efficiently. Remember that the rear adjuster is a stop, not a brake; if the machine loses air, the cylinder will not hold its position. To replace this cylinder with another ISO 15552 unit, match the 100mm bore, 30mm stroke, 20mm adjustment, PT port, and the -S magnet.
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 SAIJ100BX30-20S FAQ
At 0.9 MPa, this 100mm bore cylinder provides a push force of 7068N and a pull force of 3681N. It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw lets you shorten the 30mm nominal stroke by up to 20mm, creating a 10-30mm usable travel window. It acts as a physical stop for end-position tuning, but it does not lock the load without live air pressure.
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