Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 185mm 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
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-75
The AirTAC SAIJ100X185-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5MPa. Its 75mm adjustment screw allows you to trim the 185mm nominal stroke back, creating a precise 110-185mm usable travel window for exact end-position tuning without swapping hardware. This unit features a SUS304 stainless steel rod for superior corrosion resistance and operates with PT tapered ports.
Because the rear adjuster acts purely as a mechanical stop, it cannot hold a load without continuous live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. This model supports the SAIJ mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 185 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 SAIJ100BX185-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×185 | 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 SAIJ100BX185-75 Is Used
Product Changeovers
Quickly adapt the 110-185mm travel window during packaging line size changes without replacing the cylinder or repositioning machine mounts.
End-Stop Calibration
Fine-tune the exact retraction point during machine commissioning to prevent crashes, using the 75mm rear screw rather than external shims.
Corrosive Assembly Lines
Leverage the 3927N push force and SUS304 stainless steel rod for reliable actuation in environments requiring high corrosion resistance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-75 the Right Cylinder?
Select this 100mm bore cylinder when an 80mm bore provides insufficient thrust (2513N push at 0.5MPa) or a 125mm bore is excessive (6136N push at 0.5MPa). The 75mm adjustment range is ideal for product changeovers on a line, letting you dial in the exact 110-185mm end-stop at commissioning rather than machining external stops or buying a fixed-stroke SAI cylinder. For a true ISO 15552 replacement, match the 100mm bore, 185mm stroke, PT port thread, SUS304 rod, and the chosen mounting hardware.
Since the 185mm stroke is under the 300mm threshold, standard side-load risks are moderate, but the robust 25mm rod and M20x1.5 thread handle typical loads well. Remember that the rear adjuster and air cushions only decelerate the travel end; they do not function as a lock. If your application requires load-holding without live air, consider an AirTAC SAIL or BSAI cylinder 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 SAIJ100BX185-75 FAQ
The rear adjuster screw lets you shorten the 185mm nominal stroke by up to 75mm, providing a usable travel window of 110-185mm. It acts as a mechanical stop to set the end position and does not lock the load without live air.
At 0.5MPa operating pressure, it provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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