Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-20S
The AirTAC SAIJ100X120-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the 120 mm nominal stroke by up to 20 mm for a precise 100-120 mm usable travel window. It delivers a robust 7068 N of push force at 0.9 MPa, making it well-suited for heavy-duty positioning tasks. The integrated -S magnet supports position sensing via AirTAC CMSE reed and DMSE electronic switches.
This model features a SUS420J2 stainless steel rod (option A) for superior corrosion and side-load resistance compared to standard carbon steel. It shares the exact mounting interface and extruded aluminum barrel of the fixed-stroke SAI series, but omits the FB, CA, CB, and CR mountings, offering a focused set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAIJ100AX120-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×120 | 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 SAIJ100AX120-20S Is Used
Machine Changeover
Quickly reposition the end-stop within the 100-120 mm window when swapping product sizes on a packaging line, eliminating the need to physically swap cylinders.
Press Positioning
Fine-tune the retract end-position during initial commissioning to ensure a heavy-duty press lands precisely without adding external mechanical stops.
Material Handling
Handles heavy workpiece routing with 7068 N of force, using the rear adjuster to dial in the exact ejection distance for varying pallet widths.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-20S the Right Cylinder?
Choose this 100 mm bore when 0.9 MPa push force around 7068 N is required; if your application needs less force, stepping down to an 80 mm bore yields 4523 N, whereas moving up to 125 mm provides 11045 N. An adjustable stroke is selected over a fixed SAI cylinder when you need live commissioning fine-tuning or variable end-stops without swapping the physical cylinder. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ100X120-20-S will not hold a load without live air, so for true load-holding without pressure, look to the SAIL or BSAI series. To match this exact configuration, specify: 100 mm bore, 120 mm stroke, 20 mm adjustment, PT tapered port threads, 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 SAIJ100AX120-20S FAQ
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm. This creates a 100-120 mm usable travel window, allowing you to fine-tune the retract position without changing the cylinder.
At a 0.9 MPa operating pressure, this 100 mm bore cylinder generates a push force of 7068 N and a pull force of 3681 N. It operates at speeds between 30 and 800 mm/s.
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