Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-100 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 SAIJ100BX155-100
The AirTAC SAIJ100X155-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 155 mm travel back by up to 100 mm. This creates a highly flexible 55-155 mm usable stroke window, letting you dial in the exact end position during commissioning without swapping hardware. It delivers a robust 3927 N of push force at 0.5 MPa.
This specific configuration features a SUS304 stainless steel rod (option B) for superior corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this unit is specified without a magnet. Remember that the rear adjuster acts only as a mechanical stop; it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-100 |
|---|---|
| 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 SAIJ100BX155-100
| 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 SAIJ100BX155-100 Is Used
Product Changeover
Rapidly adjust the end-of-stroke position from 55 to 155 mm to accommodate varying package sizes on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the retract stop during initial commissioning to perfect the seating of heavy 100 mm bore tooling without adding external mechanical stops.
Variable End Stops
Use the 100 mm adjustment range to test multiple actuation distances in a robotic cell, finding the optimal travel before finalizing the design.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-100 the Right Cylinder?
Choose this 100 mm bore when you need heavy thrust—3927 N at 0.5 MPa or 5497 N at 0.7 MPa. If your application requires less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, whereas moving up to a 125 mm bore provides 6136 N. The 100 mm bore uses a G1/2 port and operates at speeds of 30-800 mm/s.
Select the SAIJ adjustable-stroke variant over a fixed SAI cylinder when a machine requires variable end-stops for rapid product changeovers. Because the 155 mm stroke is well under the 300 mm side-load threshold, external guides are less critical here, though the 25 mm rod still handles standard loads well. For applications requiring true load-holding without continuous air, select the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock. This model is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ100BX155-100 FAQ
At a standard 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 SAIJ100X155-100 has a nominal 155 mm stroke with a rear mechanical adjuster that allows you to shorten the travel by up to 100 mm. This creates a usable stroke window of 55 to 155 mm, which is set via a stopper screw rather than a load-holding lock.
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