Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50 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 SAIJ100X75-50
The AirTAC SAIJ100X75-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 75 mm stroke that can be dialed back by up to 50 mm, creating a precise 25-75 mm usable travel window for commissioning flexibility. Delivering 3927 N of push force at 0.5 MPa, it handles heavy positioning tasks with ease. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This model uses a carbon steel piston rod with an M20x1.5 thread and a G1/2 port. The generous 36 mm cushion stroke at both ends ensures smooth deceleration of high moving masses. The rear adjuster acts purely as a travel stop to fine-tune the end position during product changeovers without swapping the cylinder. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50 |
|---|---|
| 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 SAIJ100X75-50
| 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 SAIJ100X75-50 Is Used
Product Changeovers
Dial in the exact end position for new product sizes on a packaging line without swapping out the entire cylinder or adding external mechanical stops.
Machine Setup
Fine-tune the 25-75 mm travel window during commissioning to perfectly time the pressing or positioning action against a hard stop.
Heavy Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy pallets or fixtures, using the rear adjuster to set the precise retract distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-50 the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust—up to 3927 N push at 0.5 MPa or 5497 N at 0.7 MPa. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, while moving up to a 125 mm bore provides 6136 N. The adjustable stroke is ideal for machine setups where the exact end position needs fine-tuning on-site, avoiding the need to bolt on external stoppers or order a custom fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 75 mm stroke, 50 mm adjustment range, PT tapered port thread, and your required mounting bracket. Because the stroke is relatively short, side-load risks are minimal, but always ensure the load is guided to prevent rod binding. Note that the rear adjuster and air cushions only decelerate the load; they do not hold position without live air. For fail-safe load holding, consider the SAIL or BSAI series instead.
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 SAIJ100X75-50 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to trim the 75 mm nominal stroke back by up to 50 mm, providing a usable travel window of 25 to 75 mm. This stopper fine-tunes the end position but does not lock the load without live air pressure.
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