Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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.
- BoreØ125 mm
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S
The AirTAC SAIJ125X105-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the retract end position. With a 105 mm nominal stroke and a 30 mm adjustment range, it provides a usable travel window of 75 to 105 mm. This bore size delivers substantial thrust, offering 8590 N push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks.
This specific configuration includes a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, and the included magnet (-S) supports CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX105-30S Is Used
Product Changeover Adjustment
Dial the retract stroke back by up to 30 mm during format changeovers to accommodate different product lengths without replacing the cylinder.
Heavy-Duty End Tuning
Leverage the 8590 N push force at 0.7 MPa to securely position heavy fixtures while fine-tuning the exact end position at commissioning.
Sensor-Ready Positioning
Utilize the dual sensor grooves and built-in magnet with CMSE reed or DMSE solid-state switches to confirm the adjusted end-stop positions.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-30S the Right Cylinder?
Choose this 125 mm bore cylinder when an application requires up to 8590 N of push force at 0.7 MPa along with variable end-stop positioning. If you need less force, stepping down to a 100 mm bore yields 5497 N at the same pressure, whereas a 160 mm bore provides 14074 N for heavier loads. The adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, allowing you to dial in the exact retract distance without swapping out the entire cylinder or adding external stops.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 105 mm stroke, 30 mm adjustment, PT port thread, and the -S magnet requirement. The SAIJ mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster is a travel stop, not a lock; for load-holding without live air pressure, consider the SAIL or BSAI series. Because the 105 mm stroke is relatively short, side-load risks are minimal, but always ensure standard alignment.
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 SAIJ125 Adjustable Cylinder SAIJ125AX105-30S FAQ
At 0.7 MPa, this 125 mm bore cylinder provides 8590 N of push force and 5734 N of pull force. The maximum thrust is 11045 N push and 8590 N pull at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the effective retract stroke by up to 30 mm. This creates a usable travel window between 75 mm and 105 mm, allowing precise end-position tuning without external stops.
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