Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-100
The AirTAC SAIJ100X145-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 145 mm stroke that can be dialed back by up to 100 mm, yielding a highly flexible 45-145 mm usable travel window for precise end-position tuning. Driven by a 100 mm bore, it delivers 3927 N of push force at 0.5 MPa and utilizes a G1/2 port for high flow demands.
This unit features a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds between 30-800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments. The rear stopper screw acts purely as a travel limit and deceleration point, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 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 SAIJ100BX145-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100BX145-100 Is Used
Variable End-Stop Positioning
Dial in the exact 45-145 mm travel distance during machine commissioning to accommodate varying material thicknesses without adding external mechanical stops.
Product Size Changeover
Quickly adjust the rear stopper on a packaging line to handle different carton depths, utilizing the full 100 mm adjustment window to switch formats rapidly.
Heavy-Duty Clamping
Leverage the 3927 N push force at 0.5 MPa to secure heavy workpieces, relying on the SUS304 stainless steel rod for durability in harsh industrial environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-100 the Right Cylinder?
Selecting this 100 mm bore adjustable cylinder makes sense when an application requires 3927 N of push force at 0.5 MPa but demands variable end-stops for frequent product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your setup requires less force, stepping down to an 80 mm bore yields 2513 N; if you need more, a 125 mm bore provides 6136 N. Because the stroke is 145 mm, side-loading is moderate, but always ensure external guides support the load to prevent rod binding.
For a true ISO 15552 replacement match, verify the 100 mm bore, 145 mm nominal stroke, 100 mm adjustment range, PT tapered port thread, and the correct mounting bracket. Remember that the rear adjuster is a stop, not a lock; if your process requires true 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 SAIJ100BX145-100 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 allows you to shorten the effective stroke by up to 100 mm from the 145 mm nominal length, creating a 45-145 mm travel window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without live air.
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