Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10S
The AirTAC SAIJ125X175-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 165-175 mm usable travel window, allowing you to trim the nominal 175 mm stroke by up to 10 mm during machine setup. Delivering 6136 N of push force at 0.5 MPa, it handles heavy-duty positioning with precision.
This SKU is built with a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance. The integrated magnet (-S) supports position sensing via AirTAC CMSE reed or DMSE solid-state switches fitted into the dual-side sensor grooves. The adjuster functions purely as a travel stop, so it cannot hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAIJ125AX175-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SAIJ125AX175-10S Is Used
Machine Changeover
Dial in the 165-175 mm travel window during product size transitions without replacing the cylinder or adding external stopper blocks.
Heavy Assembly Press
Leverage 6136 N of thrust at 0.5 MPa for pressing operations, using the rear screw to fine-tune the bottoming position accurately.
End-Stop Calibration
Verify and set exact retraction endpoints during commissioning, using the 10 mm adjustment to compensate for mechanical tolerance stack-up.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10S the Right Cylinder?
Choose this 125 mm bore when a 100 mm cylinder (3927 N at 0.5 MPa) lacks thrust, but an 80 mm bore (2513 N) is undersized. An adjustable stroke is ideal for product changeovers where exact end-position tuning is required, avoiding the need to swap out a fixed-stroke SAI cylinder or bolt on external stops. For load-holding without continuous air, select a SAIL or BSAI series instead.
To match this ISO 15552 interchangeable cylinder, specify: 125 mm bore, 175 mm stroke, 10 mm adjustment range, PT G1/2 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S magnet. With a 175 mm stroke, side loads are moderate, but always guide the load externally to prevent rod binding.
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 SAIJ125AX175-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. It can deliver up to 1251 kgf at its maximum 1.0 MPa pressure rating.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective travel from 175 mm down to 165 mm. It is a travel stop and not a lock, meaning it cannot hold a load without live air pressure.
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