Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-50 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 SAIJ100BX155-50
The AirTAC SAIJ100X155-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 155 mm stroke that can be fine-tuned down by up to 50 mm, yielding a usable travel window of 105 to 155 mm. Equipped with a SUS304 stainless steel rod and PT tapered ports, it delivers a robust 7068 N of push force at 0.9 MPa.
This adjustable-stroke design allows precise end-position tuning during commissioning without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. The rear screw acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-50 |
|---|---|
| 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 SAIJ100BX155-50
| 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 SAIJ100BX155-50 Is Used
Variable End-Stop Tuning
Dial in the exact retraction point between 105 and 155 mm during machine setup to accommodate different material thicknesses without external stopper blocks.
Product Changeover
Quickly adjust the stroke length by up to 50 mm on packaging lines when switching between different product sizes, minimizing downtime.
High-Force Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy jigs into precise final positions, tuning out mechanical slack at commissioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-50 the Right Cylinder?
Choose this 100 mm bore when an application requires significant thrust, stepping up from a 63 mm bore that provides 2805 N push force at 0.7 MPa. The 50 mm adjustment range is ideal for product-size changeovers on a line, providing variable end-stops without machining new hard stops. For a dimensionally interchangeable ISO 15552 replacement, match the 100 mm bore, 155 mm stroke, 50 mm adjustment, PT ports, and SUS304 rod.
Because the stroke is under 300 mm, side-load risks are moderate, but the 25 mm rod diameter handles standard loads well. Note that the rear adjuster and air cushions only decelerate the travel end; for load-holding without live pressure, consider an external rod lock or the SAIL 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 SAIJ100BX155-50 FAQ
At 0.9 MPa operating pressure, this 100 mm bore cylinder provides 7068 N of push force and 6625 N of pull force. It can achieve a maximum push force of 801 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm from the nominal 155 mm, providing an adjustable travel window of 105 to 155 mm. It functions as a mechanical stop and does not lock the load without air pressure.
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