Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40S
The AirTAC SAIJ100X155-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 115 to 155 mm window. Delivering 3927 N of push force and 3681 N of pull force at 0.5 MPa, it provides robust actuation for heavy payloads. The integrated -S magnet enables position feedback when paired with AirTAC CMSE reed or DMSE electronic sensors mounted in the dual-sided sensor grooves.
This specific SKU is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes PT tapered port threads (G1/2). The rear adjustment screw acts purely as a mechanical stop to trim the retract end-position during commissioning; it does not lock the load. For applications requiring position holding without live air pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 155 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 SAIJ100BX155-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×155 | 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 SAIJ100BX155-40S Is Used
Machine Changeover
Dial in the exact end-position within the 115-155 mm window when switching production lines to a different product size without changing the cylinder.
Heavy Pressing
Leverage the 3927 N push force at 0.5 MPa for pressing or forming operations where the final stroke distance needs on-site fine-tuning.
Sensor-Driven Logic
Utilize the -S magnet with DMSE solid-state sensors to confirm adjustable end-positions in automated testing equipment requiring high repeatability.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-40S the Right Cylinder?
Choose this 100 mm bore cylinder when a 125 mm bore (delivering 6136 N at 0.5 MPa) would be excessive overkill, or when an 80 mm bore (2513 N at 0.5 MPa) lacks the necessary thrust. The 40 mm adjustment range is ideal for machinery that requires precise end-stop tuning during product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder or bolt on external stops. To match this ISO 15552 footprint exactly, specify the 100 mm bore, 155 mm stroke, 40 mm adjust, PT G1/2 ports, SUS304 (B) rod, and the -S magnet.
Because the 155 mm stroke is relatively short, side-load stress on the 25 mm rod is minimal, though an external guide is always recommended for heavy lateral loads. Remember that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets found in some other series.
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 SAIJ100BX155-40S FAQ
The rear adjuster screw lets you shorten the nominal 155 mm stroke by up to 40 mm, providing a usable travel window of 115 to 155 mm. It functions as a mechanical stop to tune the end position and does not lock the load without air pressure.
At 0.5 MPa operating pressure, it generates 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
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