Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-20
The AirTAC SAIJ125X110-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 90 to 110 mm. Delivering 8590 N of push force at 0.7 MPa, it handles heavy actuation tasks with precision. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting.
This adjustable-stroke design allows you to fine-tune the retract end position during commissioning or product changeovers without swapping the cylinder or adding external stops. It uses a standard PT tapered port thread and a robust 32 mm carbon steel rod. The rear adjuster acts purely as a travel stop, meaning it does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 SAIJ125X110-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×110 | 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 SAIJ125X110-20 Is Used
Machine Setup Changeover
Dial in the exact 90 to 110 mm retract position during product family changeovers without disassembling the line or bolting on external stops.
Variable End Stops
Adjust the stroke endpoint on the fly for conveyor diverters or gates that handle varying package sizes on the same production line.
Heavy Clamping Tuning
Fine-tune the clamping position of heavy assemblies, using the 8590 N push force to secure parts while adjusting the final 20 mm of travel.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-20 the Right Cylinder?
Choose this 125 mm bore when your application requires higher force than a 100 mm cylinder (which provides 5497 N push at 0.7 MPa) but less than the massive 14074 N output of a 160 mm bore. The SAIJ125X110-20 is ideal for setups needing exact end-position tuning, whereas a fixed-stroke SAI is better for consistent repeat-only cycles. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
For exact ISO 15552 replacement, match the 125 mm bore, 110 mm stroke, 20 mm adjustment, PT port, and standard carbon steel rod. Because this model lacks a magnet, position sensing requires adding a separate external rod lock or pilot-operated check valve if load-holding is needed without live air, or pointing to SAIL or BSAI variants.
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 SAIJ125X110-20 FAQ
At an operating pressure of 0.7 MPa, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. It can deliver up to 11045 N of push force at 0.9 MPa.
The rear adjuster screw lets you shorten the effective travel from the nominal 110 mm down to 90 mm, creating a 90 to 110 mm usable window. This stopper sets the travel end and decelerates the load, but it does not lock or hold the load without continuous air pressure.
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