Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20S
The AirTAC SAIJ100X180-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stopper for stroke adjustment. It provides a usable travel window of 160 to 180 mm, allowing you to dial in the exact end position during machine commissioning without adding external stops. In the 100 mm bore class, it generates 3927 N of push force and 3681 N of pull force at 0.5 MPa.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and because this is a -S model, it contains a built-in magnet ready for CMSE reed and DMSE electronic solid-state switches. The mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found on some other series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAIJ100BX180-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SAIJ100BX180-20S Is Used
Product Changeovers
Quickly fine-tune the 160-180 mm travel window to accommodate new package sizes or tooling lengths without swapping the physical cylinder.
Machine Commissioning
Dial in the exact retract end-position during setup, using the rear stopper to absorb deceleration energy rather than relying on hard external stops.
Washdown Assembly
Leverage the SUS304 stainless steel rod for corrosion resistance in food or chemical processing lines while maintaining 3927 N of thrust.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20S the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks the thrust for your tooling, but you want to avoid stepping up to a 125 mm body. The 20 mm rear adjuster screw is ideal for product changeovers, letting you trim the 180 mm nominal stroke back to 160 mm on the fly. Note that the rear adjuster acts only as a travel stop to set deceleration; it does not hold the load without live air. For true fail-safe load holding, select the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 180 mm stroke, 20 mm adjustment range, PT G1/2 port, and the -S magnet requirement. The 25 mm rod and M20x1.5 thread provide robust resistance to side loads, but for any stroke of 300 mm or more, an external guide is still required to prevent rod binding.
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 SAIJ100BX180-20S 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. It can reach up to 7068 N of push force at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the 180 mm nominal stroke by up to 20 mm, creating a 160 to 180 mm usable travel window. It functions as a physical stop to tune the end position and does not lock the load without continuous air pressure.
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