Airtac SAIJ125 Adjustable Cylinder SAIJ125X210-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X210-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X210-10
The AirTAC SAIJ125X210-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force at 0.5MPa and features a 10mm adjustment range, creating a precise 200-210mm usable travel window for fine-tuning the retract end position.
This extruded aluminum cylinder includes variable air cushions at both ends and dual sensor grooves. The rear adjuster functions strictly as a mechanical stop for commissioning, not a lock, meaning live air is required to hold the load. It uses a PT tapered port thread and a robust 32mm carbon steel rod.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X210-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X210-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 210 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 SAIJ125X210-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×210 | 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 SAIJ125X210-10 Is Used
End-Position Tuning
Dial in the exact 200-210mm retract distance during machine commissioning to perfect product seating without physical spacers.
Product Changeover
Quickly adjust the stroke by up to 10mm on the fly when running a slightly different package size on the same line.
Heavy Assembly Press
Leverage the 6136N push force at 0.5MPa to seat heavy components, using the rear stop to prevent over-travel.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X210-10 the Right Cylinder?
Choose this 125mm bore when a 100mm bore (providing 3927N push at 0.5MPa) is insufficient, but an 80mm bore is too small. The adjustable stroke is ideal for product changeovers, allowing you to dial in the end position without adding external stops or swapping a fixed-stroke SAI cylinder. To match this ISO 15552 interchangeable cylinder, confirm the 210mm stroke, 10mm adjustment, PT G1/2 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Although the 32mm rod handles high side loads, any stroke over 300mm requires an external guide; at 210mm, it is well-supported.
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 SAIJ125X210-10 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 acts as a mechanical stop that lets you shorten the nominal 210mm stroke by up to 10mm, providing a 200-210mm travel window. It only sets the end position and does not lock the load without live air pressure.
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