Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20S
The AirTAC SAIJ100X75-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and features a 20mm adjustment range, creating a precise 55-75mm usable travel window for commissioning flexibility. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration includes a magnet for CMSE reed and DMSE electronic solid-state switches.
This variant features a SUS304 stainless steel rod (code B) for superior corrosion resistance and utilizes PT tapered port threads. The M20x1.5 rod thread and 25mm rod diameter provide excellent rigidity, though long unsupported strokes still require an external guide. The rear adjusting screw acts purely as a mechanical stop to decelerate and set the travel end, meaning it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100BX75-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100BX75-20S Is Used
Product Changeover Tuning
Quickly dial in the 55-75mm travel window during production line changeovers to accommodate varying package sizes without replacing hardware.
Variable End-Stop Setup
Perfect for prototyping and assembly stations where the exact retract position must be micro-adjusted on the fly to meet tight tolerances.
Corrosive Environment Actuation
The SUS304 stainless steel rod handles washdown or humid plant environments while delivering 3927N of push force for heavy gating.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20S the Right Cylinder?
Choose this 100mm bore cylinder when your application requires high thrust forces up to 3927N at 0.5 MPa (or 7068N at 0.9 MPa). If your force requirements are lower, stepping down to an 80mm bore yields 2513N push force, while a 125mm bore increases output to 6136N. The adjustable stroke is highly beneficial for machine setups requiring product-size changeovers, allowing you to fine-tune the retract end-position without swapping the cylinder or adding external stops.
When replacing an ISO 15552 cylinder, match the 100mm bore, 75mm nominal stroke, 20mm adjustment range, PT port threads, and the -S magnet option. The SAIJ mounting set supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, intentionally omitting FB, CA, CB, and CR brackets. For load-holding applications without live air pressure, this cylinder's adjuster is only a stop; you must use an external rod lock, a pilot-operated check valve, or switch to the SAIL or BSAI series.
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 SAIJ100BX75-20S FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At its maximum 1.0 MPa pressure, the push force reaches 801 kgf.
The rear mechanical adjuster allows you to shorten the 75mm nominal stroke by up to 20mm, creating a 55-75mm usable travel window. The adjuster acts as a stop to set the end position and does not function as a lock to hold the load without air pressure.
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