Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-10S 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 SAIJ125X175-10S
The AirTAC SAIJ125X175-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 10 mm. This creates a precise 165-175 mm usable travel window, enabling fine end-position tuning at commissioning without swapping out the cylinder or adding external stops. It delivers a robust 6136 N push force at 0.5 MPa, making it ideal for heavy-duty positioning tasks.
Equipped with a standard carbon steel rod and PT tapered port threads, this unit includes a -S magnet for seamless integration with AirTAC CMSE reed and DMSE solid-state sensors. The extruded aluminum barrel provides sensor grooves on both sides, and the rear adjuster acts purely as a travel stop to set deceleration endpoints, meaning it will not hold a load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-10S |
|---|---|
| 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 SAIJ125X175-10S
| 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 SAIJ125X175-10S Is Used
Heavy Press Tuning
Dial in the exact 165-175 mm end-stop for heavy pressing and forming operations during initial machine commissioning without external stopper blocks.
Product Changeovers
Quickly adjust the rear stopper by up to 10 mm to accommodate slight length variations when switching between different product sizes on a packaging line.
Large Assembly Jigs
Leverage the 6136 N push force and CMSE/DMSE sensor compatibility to confirm large component seating in automated heavy-assembly fixtures.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X175-10S the Right Cylinder?
Choose this 125 mm bore when an 80 mm bore (providing 2513 N push at 0.5 MPa) is insufficient for heavy actuation, but a 160 mm bore (10053 N push) would be excessive overkill. The 10 mm adjustable range is specifically beneficial for product changeovers on a line, allowing operators to dial in the exact end-stop without mechanical rebuilds. For applications requiring the load to be held without continuous air pressure, this cylinder is not a lock; you should instead look at the SAIL or BSAI series.
To match this ISO 15552 cylinder exactly, specify the 125 mm bore, 175 mm stroke, 10 mm adjustment, PT port threads, and the -S magnet option. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Since the stroke is under 300 mm, side-load risks are minimized, though external guides are still recommended for heavy lateral 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 SAIJ125X175-10S 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 reach a maximum push force of 1251 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 175 mm stroke by up to 10 mm, creating a 165-175 mm travel window. It only sets the end position and deceleration; it is not a lock and will not hold the load without live air pressure.
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