Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-75
The AirTAC SAIJ100X155-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 155 mm stroke that can be dialed back by up to 75 mm, yielding a precise 80-155 mm usable travel window for on-the-fly end-position tuning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy actuation tasks with ease.
This variant uses a SUS420J2 stainless steel rod (option A) for superior corrosion resistance compared to standard carbon steel. It features PT tapered port threads (G1/2) and integrates adjustable air cushions at both ends to decelerate moving loads. The rear adjuster acts strictly as a mechanical stop to set travel limits and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 155 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 SAIJ100AX155-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×155 | 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 SAIJ100AX155-75 Is Used
Machine Changeovers
Dial in the 80-155 mm travel window during product size transitions on a packaging line without replacing the entire actuator.
End-Position Tuning
Fine-tune the retract end-stop during commissioning to achieve exact positioning, compensating for mechanical tolerances.
Heavy Forming Operations
Leverage the 3927 N push force at 0.5 MPa for pressing and forming tasks that require adjustable penetration depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX155-75 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial thrust—3927 N push at 0.5 MPa or 5497 N at 0.7 MPa—combined with variable end-stop positioning. If you need less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. The 75 mm adjustment range is exceptionally wide, making this SKU ideal for product changeovers on a line where the required stroke varies significantly, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 155 mm stroke, 75 mm adjustment, PT port threads, and mounting style. Available mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 155 mm stroke is relatively short, side-load risks are minimal, but an external guide is still recommended for heavy lateral loads. For load-holding without continuous air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
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 SAIJ100AX155-75 FAQ
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke from 155 mm down to 80 mm. This creates a 75 mm tuning window to set the exact retract position without adding external stops.
At a 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
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