Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-20S
The AirTAC SAIJ100X165-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and provides a usable travel window of 145-165mm, letting you trim the nominal 165mm stroke by up to 20mm. This built-in stopper allows fine end-position tuning at commissioning without swapping the cylinder or adding external stops.
This SKU includes a SUS304 stainless steel rod for superior corrosion resistance and works seamlessly with CMSE reed and DMSE electronic sensors via its integrated magnet. The extruded aluminum barrel carries sensor grooves on both sides, and the mounting footprint supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 165 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 SAIJ100BX165-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×165 | 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 SAIJ100BX165-20S Is Used
Machine Changeover
Dial in the 145-165mm travel window during product-size changeovers to set new end positions without machining new external stopper blocks.
Assembly Pressing
Leverage the 3927N thrust and fine-tune the rear stopper to achieve precise pressing depths at machine commissioning.
Variable End Stops
Use the rear adjustment screw to trim the effective stroke by up to 20mm for testing multiple sensor and end-stop positions on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX165-20S the Right Cylinder?
Choose this 100mm bore when an 80mm bore (2513N push at 0.5 MPa) lacks the necessary thrust, but a 125mm bore is physically too large. The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers, replacing the need for a fixed-stroke SAI cylinder. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for dead-pilot locking, select the SAIL or BSAI series.
When matching this ISO 15552 cylinder for an upgrade, specify the 100mm bore, 165mm stroke, 20mm adjustment, PT tapered port thread, and the -S magnet option. Because the stroke is 165mm, ensure external side-load guidance is used if the piston rod is subjected to heavy unsupported loads.
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 SAIJ100BX165-20S FAQ
At 0.5 MPa, it provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N. The operating speed range is 30-800 mm/s.
The rear adjuster acts as an external stopper that lets you shorten the effective stroke from the nominal 165mm down to 145mm, creating a 145-165mm usable travel window. It sets the travel end but does not lock or hold the load without live air pressure.
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