Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50S 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 SAIJ100BX75-50S
The AirTAC SAIJ100X75-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 75 mm travel to a precise usable window of 25-75 mm without external stops. It delivers substantial thrust, pushing 7068 N and pulling 3681 N at 0.9 MPa. This configuration features a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors.
The integrated rear screw acts as a travel stop for fine end-position tuning during commissioning, not as a lock to hold the load without live air. It uses a G1/2 port and supports a speed range of 30-800 mm/s. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50S |
|---|---|
| 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 SAIJ100BX75-50S
| 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 SAIJ100BX75-50S Is Used
Variable End-Stop Setup
Dial in the exact retraction end-point from 25 to 75 mm during machine commissioning to accommodate different material thicknesses without changing cylinders.
Product Size Changeover
Quickly adjust the stroke length on packaging lines when switching between product sizes, using the rear screw to set the new travel limit.
Heavy Fixture Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy fixtures into exact alignment, relying on the stopper for repeatable fine-tuning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-50S the Right Cylinder?
Selecting this 100 mm bore over a smaller 80 mm bore jumps the push force at 0.5 MPa from 2513 N to 3927 N, providing a robust margin for heavy product changeovers. The adjustable stroke is ideal for variable end-stop setups, letting you fine-tune the exact 25-75 mm window on the fly instead of swapping a fixed-stroke SAI cylinder. If your application requires holding a load without continuous air pressure, use a SAIL or BSAI locking cylinder instead, as the rear adjuster only sets the travel end.
Because the stroke is 75 mm, the 25 mm rod and M20x1.5 thread handle side loads well, though long unsupported strokes still need an external guide. To match this ISO 15552 cylinder exactly, specify the 100 mm bore, 75 mm stroke, 50 mm adjustment, PT tapered port, SUS304 rod, and -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 SAIJ100BX75-50S FAQ
At 0.9 MPa, this 100 mm bore cylinder generates a push force of 7068 N and a pull force of 3681 N. At 0.5 MPa, it provides 3927 N push and 3681 N pull.
The rear adjuster screw lets you shorten the effective travel from the 75 mm nominal stroke down to 25 mm, creating a 25-75 mm usable window. It acts as a travel stop and does not hold the load without live air pressure.
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