Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50S
The AirTAC SAIJ100X55-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 5 to 55 mm. Designed for fine end-position tuning at commissioning, it eliminates the need to swap cylinders or bolt on external stops during product changeovers. It features a standard carbon steel rod and a PT tapered port.
In this 100 mm bore configuration, the cylinder delivers a robust 7068 N push force at 0.9 MPa and 5497 N at 0.7 MPa. The rear adjuster acts purely as a mechanical stop to set the travel end and does not lock the load without live air pressure. For position holding without continuous air, an external rod lock, pilot-operated check valve, or the related SAIL or BSAI series is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100X55-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100X55-50S Is Used
Product Changeover
Dial in the exact end-stop for new part sizes on a packaging line without swapping out the entire cylinder assembly.
Variable Stroke Pressing
Fine-tune the 5-55 mm travel window to apply precise clamping or pressing force across different material thicknesses.
Machine Setup Calibration
Use the rear adjuster to set the exact retraction end position during initial commissioning, avoiding external stopper hardware.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50S the Right Cylinder?
Select this 100 mm bore model when an application demands high thrust combined with variable end stops, such as pressing or clamping operations where the exact travel distance changes between product runs. If the 7068 N push force at 0.9 MPa exceeds your requirement, stepping down to the 80 mm bore yields 4523 N, whereas moving up to the 125 mm bore provides 11045 N.
The integrated -S magnet supports AirTAC CMSE reed and DMSE electronic sensors housed within the dual-side sensor grooves. Because the 55 mm nominal stroke is relatively short, side-loading is naturally minimized, but the robust 25 mm rod and M20x1.5 thread handle higher offset loads well. This adjustable-stroke design is preferred over a fixed SAI cylinder when you need on-the-fly mechanical fine-tuning rather than relying solely on the variable air cushions at both ends.
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 SAIJ100X55-50S FAQ
At 0.7 MPa it provides 5497 N of push force, and at 0.9 MPa it delivers 7068 N. The pull force at 0.5 MPa is 3681 N.
The rear adjusting screw lets you mechanically shorten the 55 mm nominal stroke by up to 50 mm, creating a usable travel window of 5 to 55 mm. The adjuster is a travel stop, not a lock, so the cylinder requires live air to hold its position.
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