Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-10S 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 SAIJ125AX220-10S
The AirTAC SAIJ125X220-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. Its 220mm nominal stroke can be fine-tuned down by up to 10mm, creating a precise 210-220mm usable travel window for exact end-position calibration. An integrated magnet allows seamless position detection with CMSE reed or DMSE electronic sensors.
This model features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, omitting FB, CA, CB, and CR options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-10S |
|---|---|
| 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 SAIJ125AX220-10S
| 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 SAIJ125AX220-10S Is Used
Precision End-Stop Tuning
Dial in the exact 210-220mm travel window during machine commissioning to perfectly seat heavy components without mechanical hard stops.
Product Changeover
Quickly adjust the retract position by up to 10mm on packaging lines when switching between slightly different product sizes.
Heavy Assembly Pressing
Leverage the 6136N push force at 0.5MPa to firmly seat large parts while using the rear screw to prevent over-travel.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-10S the Right Cylinder?
Select this 125mm bore when an 80mm cylinder's 2513N push force at 0.5MPa is insufficient, or step down if a 100mm bore's 3927N is adequate for your task. The 10mm rear adjuster is ideal for dialing in exact end-stops during commissioning or product changeovers without swapping cylinders or adding external stops. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an external rod lock or pilot-operated check valve.
For an exact ISO 15552 replacement, match the 125mm bore, 220mm stroke, 10mm adjustment, PT port threads, and the -S magnet requirement. Since the 220mm stroke exceeds 300mm only on longer models, this specific length is manageable, but always ensure external guides are used if the piston rod experiences significant side loads.
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 SAIJ125AX220-10S FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the 220mm nominal stroke by up to 10mm, providing a usable travel window of 210-220mm. This stopper fine-tunes the end position but does not lock the load without continuous air pressure.
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Standard models usually ship in 3-4 days.
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