Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-30S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX85-30S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-30S
The AirTAC SAIJ100X85-30-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. By integrating an external adjusting screw at the rear, this model allows you to trim the effective travel back by up to 30mm, creating a precise 55-85mm usable stroke window without swapping out the entire actuator.
This specific SKU is configured with an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a built-in magnet (-S) for position sensing. The extruded aluminum barrel features sensor grooves on both sides, directly supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It utilizes a PT tapered G1/2 port and relies on variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-30S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-30S
| 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 SAIJ100AX85-30S Is Used
Machine Changeovers
Quickly fine-tune the 55-85mm end-stop during product size transitions on a packaging line without disassembling the actuator or adding external shims.
Variable End Positioning
Dial in the exact clamping depth on a machining fixture by adjusting the rear stopper screw to compensate for tooling wear over time.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX85-30S the Right Cylinder?
Select this 100mm bore actuator when an application demands high thrust combined with on-the-fly end-position tuning, such as dialing in a precise 55-85mm stroke during product changeovers. Because the nominal stroke is under 300mm, external side-load guides are less critical, though the substantial 25mm rod and M20x1.5 thread inherently handle greater bending loads than smaller bores.
When replacing an ISO 15552 cylinder, verify the 100mm bore, 85mm nominal stroke, 30mm adjustment range, PT G1/2 port, and the required -S magnet. Remember that the rear adjuster acts strictly as a travel stop and the air cushions only manage deceleration; neither will hold a load without continuous live air. For true load-holding without pneumatic pressure, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options.
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 SAIJ100AX85-30S FAQ
If you increase the pressure to 0.7 MPa, the push force rises to 5497N.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the 85mm nominal stroke by up to 30mm, resulting in a usable travel window of 55-85mm. It only sets the retract end position and does not lock the load without live air pressure.
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