Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-50S
The AirTAC SAIJ100X500-50-S is a double-acting ISO 15552 profile cylinder with a 100mm bore and a 500mm stroke, equipped with a rear stroke adjuster. The -50 code means you can dial back the travel by up to 50mm, creating a precise 450-500mm usable end-position window. It delivers 3927N of push force at 0.5MPa and features a standard carbon steel piston rod with PT tapered port threads.
This adjustable variant omits the FB, CA, CB and CR mountings, offering a reduced set of Basic, FA, LB, TC, FTC, TCM1 and TCM2 brackets. The -S option includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE solid-state switches mounted into the dual-side sensor grooves on the extruded aluminum barrel.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAIJ100X500-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SAIJ100X500-50S Is Used
Product Size Changeovers
Dial in the 450-500mm stroke window during packaging line format changes to accommodate different carton lengths without changing the cylinder.
Machine Commissioning
Fine-tune the exact retract end-position during setup to perfectly time the tooling contact, preventing hard mechanical crashes.
Variable End Stops
Adjust the travel limit on the fly for diverter gates handling mixed product sizes on a single conveyor belt.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X500-50S the Right Cylinder?
Choose this 100mm bore when 80mm (2513N at 0.5MPa) is too weak, but 125mm (6136N) is oversized for your frame. An adjustable stroke is selected over a fixed SAI cylinder when you need on-the-fly end-position tuning during machine commissioning or product changeovers, avoiding the need to physically swap out barrels or bolt on external stopper blocks.
For ISO 15552 replacement, match the 100mm bore, 500mm stroke, 50mm adjustment range, G1/2 port, PT thread, and the -S magnet. Because the stroke is 500mm, the 25mm rod diameter and M20x1.5 rod thread provide rigidity, but an external guide is still recommended to prevent side-load damage over this long unsupported travel. Note that the rear adjuster and air cushions act as travel stops and deceleration only; they do not hold the load without live air, so use a SAIL or BSAI lock for fail-safe holding.
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 SAIJ100X500-50S FAQ
At a 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. It can deliver up to 7068N of push force at 0.9MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 500mm nominal stroke by up to 50mm, providing a usable travel window of 450-500mm. It is a stop, not a lock, and does not hold the load without continuous air pressure.
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