Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-40 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 SAIJ100AX155-40
The AirTAC SAIJ100X155-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 115 to 155 mm, allowing you to dial back the nominal 155 mm stroke by up to 40 mm during machine commissioning without swapping the cylinder. Delivering a robust 5497 N push force at 0.7 MPa, it handles heavy loads with ease.
This unit features a SUS420J2 stainless steel rod (option A) for superior side-load resistance and corrosion protection, paired with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later. The mounting interface uses a reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-40 |
|---|---|
| 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 SAIJ100AX155-40
| 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 SAIJ100AX155-40 Is Used
Variable End-Stop Forming
Fine-tune the 115 to 155 mm stroke on the fly to accommodate different material thicknesses in a press or forming station.
Machine Commissioning
Dial in the exact retract position during setup without physically swapping out the entire pneumatic cylinder.
Product Size Changeover
Quickly adjust the travel end for different package sizes on a conveyor sorting line using the rear stopper screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-40 the Right Cylinder?
Choose this 100 mm bore when a 80 mm cylinder (providing 3518 N push at 0.7 MPa) is insufficient, but a 125 mm unit is too large. The 40 mm adjustment range is ideal for product changeovers requiring variable end-stops, avoiding the need to bolt on external stops or buy a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For dead-end load holding, select a SAIL or BSAI cylinder instead.
Because the 155 mm stroke is relatively short for this bore, side-load risks are minimal, but an external guide is still recommended for heavy lateral loads. To replace an ISO 15552 cylinder, match the 100 mm bore, 155 mm stroke, 40 mm adjuster, PT port threads, and the specific mounting accessory.
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 SAIJ100AX155-40 FAQ
At a 0.7 MPa operating pressure, the SAIJ100X155-40 provides 5497 N of push force and 5145 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm from the 155 mm nominal length, creating a usable travel window of 115 to 155 mm. This stopper only sets the end position and does not lock the load without live air pressure.
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