Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10
The AirTAC SAIJ125X170-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136 N push force at 0.5 MPa. It features a 125 mm bore, a 32 mm carbon steel piston rod with an M27x2 thread, and PT tapered port threads. By turning the rear screw, you can trim the nominal 170 mm travel back by up to 10 mm, creating a precise 160-170 mm usable window for exact end-position tuning.
This adjustable stopper allows you to fine-tune the retract position during commissioning or product changeovers without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, though this non-magnetic variant requires the -S option to support CMSE reed or DMSE electronic sensors. The rear adjuster acts purely as a travel stop and does not hold the load without live air.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 170 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 SAIJ125X170-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×170 | 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 SAIJ125X170-10 Is Used
Machine Changeover
Dial in the 160-170 mm retract position during product size changes without machining new hard stops.
Assembly Pressing
Utilize the 6136 N thrust at 0.5 MPa for pressing operations, using the adjuster to set precise contact depth.
End-Stop Calibration
Fine-tune the final resting position during commissioning to align with downstream equipment perfectly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X170-10 the Right Cylinder?
Choose this 125 mm bore when your application demands higher thrust than a 100 mm cylinder (which provides 3927 N push at 0.5 MPa), but does not require the massive output of a 160 mm bore. The 10 mm adjustment range is ideal for setups needing minor end-position corrections rather than large travel changes. Because the stroke is 170 mm, side-load risks are moderate, but always ensure adequate external guiding for optimal rod life.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 170 mm stroke, PT port threads, and your required mounting style. SAIJ supports a specific subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that this model lacks a position lock; if your machine requires load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
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 SAIJ125X170-10 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 the maximum 1.0 MPa pressure, it achieves a push force of 1251 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 170 mm nominal stroke by up to 10 mm. This creates a 160-170 mm usable travel window for fine-tuning the end position without replacing the cylinder.
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