Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20 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 SAIJ100X50-20
The AirTAC SAIJ100X50-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 50mm stroke that can be dialed back by up to 20mm, giving you a precise 30-50mm usable travel window for fine end-position tuning during commissioning. Built with an extruded aluminum barrel and a carbon steel rod, it delivers robust thrust in a standardized footprint.
This 100mm bore model generates 3927N of push force and 3681N of pull force at 0.5 MPa, making it suitable for heavy-duty positioning tasks. The rear adjusting screw acts purely as a travel stop to set deceleration and end limits; it is not a locking device and will not hold a load without live air pressure. For load-holding without compressed air, consider an external rod lock or the AirTAC SAIL and BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20 |
|---|---|
| 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 SAIJ100X50-20
| 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 SAIJ100X50-20 Is Used
Machine Changeover
Dial in the exact 30-50mm end-stop during product size changes on a packaging line without swapping out the entire cylinder assembly.
Press Fit Tuning
Fine-tune the rear adjuster to perfect the insertion depth of heavy bearings or pins, compensating for mechanical wear over time.
End-Stop Calibration
Set precise deceleration limits for heavy-duty actuators, using the rear screw to trim the final 20mm of travel for smooth positioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X50-20 the Right Cylinder?
Select this 100mm bore cylinder when your application requires substantial force within a short travel distance, stepping up from a 80mm bore that provides 2513N push force at 0.5 MPa. The adjustable 30-50mm travel window is ideal for product changeovers on a line where you need a variable end-stop without physically swapping cylinders or adding external stops. If your process requires fixed travel without rear adjustment, the standard AirTAC SAI series is the simpler alternative.
When ordering, verify your configuration matches these exact attributes: a 100mm bore, 50mm stroke with a 20mm adjustment range, PT tapered port threads, carbon steel rod material, and no sensor magnet. This model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts. Because the 50mm stroke is short, side-load risks are minimal, but ensure your mounting choice provides adequate structural support for the 801kgf maximum load capacity at 1.0 MPa.
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 SAIJ100X50-20 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801kgf.
The rear adjusting screw acts as an external stopper that lets you shorten the effective travel from the 50mm nominal stroke down to 30mm. This allows you to fine-tune the end position at commissioning without changing the cylinder itself.
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