Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm 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
- Stroke550 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75
The AirTAC SAIJ100X550-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a substantial 7068N push force at 0.9 MPa, with a nominal 550mm stroke that can be fine-tuned backward to a 475mm effective travel window. This 75mm adjustment range allows precise end-position calibration during commissioning without adding external stops or swapping the unit.
Built with a SUS304 stainless steel rod and a PT tapered G1/2 port, this extruded aluminum barrel model omits the FB, CA, CB, and CR mounting styles, supporting only Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces. The rear adjuster acts strictly as a travel stop for deceleration alongside the variable air cushions; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 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 SAIJ100BX550-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 SAIJ100BX550-75 Is Used
Machine Setup & Changeover
Dial in the exact 475-550mm end-stop during machine setup or product size changes without physically swapping the cylinder or bolting on external stopper blocks.
Variable End-Position Tuning
Fine-tune the retract end-position at commissioning using the rear screw, allowing precise calibration of the travel window to match varying workpiece dimensions.
High-Force Positioning
Leverage the 7068N push force at 0.9 MPa for moving heavy assemblies, using the adjustable travel limit to perfectly seat heavy components without impact shock.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX550-75 the Right Cylinder?
Choose this 100mm bore when an 80mm bore (yielding 4523N push at 0.9 MPa) cannot meet your force demands, but a 125mm bore (11045N) would be excessive. The adjustable stroke is ideal for product changeovers on a line where the exact end-of-stroke position varies by up to 75mm. Because the total stroke is 550mm, the 25mm rod diameter and M20x1.5 rod thread will carry moderate side loads, but an external guide is strongly recommended for this long unsupported travel to prevent rod bending.
When replacing an ISO 15552 cylinder, match the 100mm bore, 550mm stroke, 75mm adjustment range, PT G1/2 port, and the appropriate mounting style. This configuration lacks a magnet, so it will not trigger AirTAC CMSE or DMSE sensors without modification.
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 SAIJ100BX550-75 FAQ
At an operating pressure of 0.9 MPa, this 100mm bore cylinder provides a push force of 7068N and a pull force of 3681N. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf of push force.
The rear adjuster screw acts as an external stop that shortens the effective travel. For this SAIJ100X550-75, you can trim the nominal 550mm stroke backward by up to 75mm, creating a usable travel window of 475 to 550mm. The adjuster only sets the end position; it does not lock the load without live air.
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