Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-100
The AirTAC SAIJ100X325-100 is a double-acting ISO 15552 profile cylinder featuring a 325mm stroke that can be mechanically dialed back by up to 100mm, yielding a usable travel window of 225-325mm. Delivering 3927N of push force at 0.5MPa, it provides robust actuation for heavy loads. This unit features a SUS304 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads.
Because the rear adjuster acts strictly as a mechanical stop to fine-tune the retract end position, it allows for rapid product changeover without swapping the cylinder or adding external stops. The extruded aluminum barrel includes dual sensor grooves, though this specific SKU is built without a magnet for position sensing. For applications requiring load holding without live air pressure, this cylinder must be paired with an external pilot-operated check valve or an AirTAC BSAI clamp-lock variant, as the adjuster and air cushions do not function as a brake.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 325 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 SAIJ100BX325-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×325 | 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 SAIJ100BX325-100 Is Used
Variable Product Changeover
Dial in the exact retract position from 225 to 325mm on packaging lines handling different carton sizes without changing out the physical actuator hardware.
Heavy Fixture Positioning
Leverage the 3927N push force at 0.5MPa to move heavy machining fixtures into place, using the rear stop to guarantee precise alignment against a hard datum.
Assembly Station Setup
Fine-tune the end-of-travel stop during initial machine commissioning to perfect pressing forces or insertion depths on automated assembly lines.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX325-100 the Right Cylinder?
Selecting this 100mm bore actuator over a smaller 80mm option upgrades your push force from 2513N to 3927N at 0.5MPa, ensuring reliable movement for heavier fixtures. The 100mm adjustment range is ideal for packaging lines or assembly stations that frequently process varying product sizes, allowing operators to set precise end positions on the fly. When replacing an ISO 15552 cylinder, match the 100mm bore, 325mm stroke, 100mm adjustment, PT port thread, and standard mounting interface (Basic, FA, LB, TC, FTC, TCM1, TCM2).
With a 325mm stroke, the 25mm rod diameter and M20x1.5 rod thread provide substantial rigidity, but long unsupported strokes inherently generate higher side loads. To prevent premature wear, always guide the load externally using a linear rail rather than relying on the rod alone. The cylinder operates at speeds of 30-800mm/s.
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 SAIJ100BX325-100 FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N. The standard operating speed range is 30-800mm/s, supported by adjustable air cushions at both ends.
The external rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective 325mm stroke by up to 100mm, creating a usable travel window of 225-325mm. This stop only sets the end position and deceleration; it does not lock the load, so live air pressure is required to hold position.
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