Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-10
The AirTAC SAIJ125X220-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa, placing it firmly in the heavy-duty class. The integrated rear stopper allows you to fine-tune the effective travel down from the 220 mm nominal stroke, creating a precise 210-220 mm usable window for product changeovers.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during machine commissioning. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, while the PT tapered port threads match the G1/2 port size dictated by the 125 mm bore.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 220 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 SAIJ125X220-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×220 | 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 SAIJ125X220-10 Is Used
Heavy-Duty Press Tuning
Dial in the exact clamping end-position within the 210-220 mm window during machine setup, preventing over-travel on high-force forming tasks.
Product Size Changeover
Quickly adjust the retract stop by up to 10 mm when switching between slightly different product heights on a heavy assembly line without changing hardware.
Robotic Material Handling
Provides the robust 6136 N push force needed to lift and lower heavy pallets, with fine end-stop tuning to protect delicate tooling interfaces.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X220-10 the Right Cylinder?
Choose this 125 mm bore when a 100 mm cylinder (offering 3927 N push at 0.5 MPa) lacks the necessary thrust, but a 160 mm bore would be physically oversized. The 10 mm adjustment range is ideal for applications requiring micro-adjustments to the retract end position. If your machine needs to hold a load securely without continuous live air pressure, note that this rear adjuster acts only as a travel stop, not a lock; you should explore the SAIL or BSAI series instead.
To replace an ISO 15552 cylinder, match the 125 mm bore, 220 mm stroke, 10 mm adjustment, PT port threads, and carbon steel rod material. Because this model lacks the -S magnet suffix, it will not trigger position sensors out of the box. Furthermore, with a 220 mm stroke, ensure your mounting configuration—whether Basic, FA, LB, TC, FTC, TCM1, or TCM2—adequately supports the rod against side loads, as long unsupported strokes require external guiding.
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 SAIJ125X220-10 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the 220 mm nominal stroke down to 210 mm. It allows precise end-position tuning at commissioning, but it does not lock the load without live air pressure.
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