Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-50S 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 SAIJ100X550-50S
The AirTAC SAIJ100X550-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 500 to 550 mm, letting you dial back the end position by up to 50 mm during commissioning without adding external stops. In the 100 mm bore class, it delivers 5497 N of push force at 0.7 MPa and utilizes a robust 25 mm carbon steel rod with an M20x1.5 thread to handle high side loads.
This unit includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic switches mounted in the dual-side sensor grooves. The extruded aluminum barrel design supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts purely as a travel stop for end-position tuning and does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-50S |
|---|---|
| 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 SAIJ100X550-50S
| 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 SAIJ100X550-50S Is Used
Product Changeover Adjustment
Dial back the stroke by up to 50 mm to accommodate varying package sizes on a conveyor line without physically swapping out the cylinder.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to achieve exact pressing or clamping depth on precision assemblies.
Long-Stroke Forming
Leverage the 5497 N push force at 0.7 MPa across a 500-550 mm travel window for large-format material bending and positioning tasks.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X550-50S the Right Cylinder?
Choose this adjustable model over a fixed SAI when your setup requires variable end-stops for product changeovers or fine-tuning at commissioning. If you need less force, stepping down to an 80 mm bore yields 3518 N at 0.7 MPa, while a 125 mm bore provides 8590 N for heavier payloads. To match this ISO 15552 cylinder, specify the 100 mm bore, 550 mm stroke, 50 mm adjustment, PT tapered ports, and the -S magnet option.
Because the stroke is 550 mm, the extended 25 mm rod can generate leverage under side loads, so an external guide is recommended to prevent binding. Remember that the rear adjuster and air cushions only decelerate the travel end; for true load-holding without live air, select an SAIL or BSAI cylinder.
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 SAIJ100X550-50S FAQ
At a 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 5146 N of pull force. It can reach a maximum push force of 7068 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel from the 550 mm nominal stroke down to as little as 500 mm. This allows precise end-position tuning at commissioning, but it does not lock the load without continuous air pressure.
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