Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 85mm 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
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-30S
The AirTAC SAIJ100X85-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 85 mm nominal stroke by up to 30 mm for a usable travel window of 55-85 mm. It delivers a robust 7068 N push force at 0.9 MPa, making it well-suited for heavy-duty positioning tasks. This version includes a magnet for CMSE and DMSE sensors and uses a standard carbon steel rod with PT (tapered) G1/2 ports.
The external rear stopper allows fine end-position tuning at commissioning without swapping the cylinder or adding external stops. It is important to note that this adjuster acts as a travel stop and deceleration aid, not a lock; the cylinder will not hold its load without live air. For load-holding without pressure, an external SAIL or BSAI unit is required. The extruded aluminum barrel features sensor grooves on both sides, and the mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 85 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 SAIJ100X85-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×85 | 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 SAIJ100X85-30S Is Used
Machine Changeover
Dial in the 55-85 mm stroke window during product size changes without physically swapping out the cylinder.
Heavy Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy jigs into their exact final position.
Assembly Line Stops
Set precise retract end-stops on the fly for varying workpiece lengths on a high-speed conveyor.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-30S the Right Cylinder?
Choose this 100 mm bore cylinder when an 80 mm bore (providing 4523 N push at 0.9 MPa) is insufficient for your load, but a 125 mm bore is too large. The adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers, rather than relying on a fixed-stroke SAI cylinder. When specifying an ISO 15552 replacement, match the 100 mm bore, 85 mm stroke, 30 mm adjustment, PT G1/2 port, and the -S magnet requirement. Although the 25 mm rod and M20x1.5 thread handle high side loads, long unsupported strokes still need an external guide.
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 SAIJ100X85-30S FAQ
At 0.9 MPa, it provides 7068 N of push force and 3681 N of pull force. At the maximum 1.0 MPa operating pressure, it delivers up to 801 kgf.
The rear adjuster lets you shorten the 85 mm nominal stroke by up to 30 mm, creating a 55-85 mm travel window. It acts as a physical stop, so the cylinder still needs live air to hold its position.
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