Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50 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 SAIJ100BX185-50
The AirTAC SAIJ100X185-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 135-185 mm usable travel window, allowing you to trim the nominal 185 mm stroke by up to 50 mm during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads while maintaining standard ISO 15552 mounting dimensions.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads with a G1/2 connection. The extruded aluminum barrel includes sensor grooves on both sides. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50 |
|---|---|
| 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 SAIJ100BX185-50
| 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 SAIJ100BX185-50 Is Used
Product Size Changeovers
Dial in the 50 mm adjustment range to quickly adapt machinery for varying product lengths without physically replacing the cylinder.
Machine Setup Fine-Tuning
Precisely set the end-of-stroke position during commissioning to perfect the mechanical timing of heavy 3927 N push operations.
Variable End-Stop Positioning
Use the 135-185 mm travel window to alter the stopping point on an assembly line for different fixture sizes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX185-50 the Right Cylinder?
Select this 100 mm bore cylinder when an application requires substantial thrust, such as the 5497 N push force at 0.7 MPa, but demands flexible end-positioning. If you need less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa. The adjustable stroke is ideal for product-size changeovers, eliminating the need to swap cylinders or bolt on external stops. To replace an ISO 15552 cylinder, match the 100 mm bore, 185 mm stroke, 50 mm adjustment, PT G1/2 port, and mounting style.
Because the 185 mm stroke is under the 300 mm threshold, side-load risks are moderate, but the robust 25 mm rod and M20x1.5 thread help manage deflection. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ cannot hold a load without live air. For load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder, or an external rod lock.
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 SAIJ100BX185-50 FAQ
At 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 acts as an external stopper that lets you shorten the effective stroke by up to 50 mm, creating a 135-185 mm usable travel window. It decelerates the travel end but does not lock the load without live air pressure.
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