Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20S
The AirTAC SAIJ100X50-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 3927N of push force at 0.5 MPa and features a usable travel window of 30-50mm, letting you trim the 50mm nominal stroke by up to 20mm during commissioning. This built-in adjuster acts purely as a mechanical stop to fine-tune the retract end position without swapping out the unit.
This model includes a carbon steel rod and a magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic switches fitted into the dual-side sensor grooves on the extruded aluminum barrel. The mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAIJ100X50-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SAIJ100X50-20S Is Used
Product Changeover
Dial in the 30-50mm travel window during line format changes to accommodate varying package sizes without replacing hardware.
Machine Setup
Fine-tune the retract end-position at commissioning using the rear stopper screw, ensuring precise alignment before final lockdown.
Assembly Stations
Leverage the 3927N push force to press components securely into place while using the adjustment to control the exact pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20S the Right Cylinder?
Choose this 100mm bore when you need substantial thrust that smaller neighbors cannot provide, stepping up from an 80mm bore that yields 2513N at 0.5 MPa. The adjustable stroke is perfect for product changeovers or dialing in exact end-stops on the fly, avoiding the need to buy a fixed-stroke SAI cylinder. For any installation, remember the rear adjuster and air cushions only decelerate the load; they do not hold it without live air. If your application requires true load-holding without continuous pressure, consider the SAIL or BSAI series. To match this ISO 15552 footprint, specify the 100mm bore, 50mm stroke, 20mm adjustment, PT tapered ports, and the -S magnet.
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 SAIJ100X50-20S FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It can reach up to 7068N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 50mm nominal stroke by up to 20mm, providing a usable travel window of 30-50mm for exact end-position tuning without adding external stops.
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