Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-50S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-50S 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 SAIJ125AX175-50S
The AirTAC SAIJ125X175-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 125 to 175 mm. Delivering 6136 N of push force at 0.5 MPa, it handles heavy industrial loads while allowing precise end-position tuning without swapping out the cylinder. The extruded aluminum barrel features sensor grooves on both sides, and the included magnet supports CMSE reed and DMSE electronic solid-state switches for exact position verification.
This model utilizes a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The rear adjustment screw acts purely as a mechanical stop to decelerate the piston at the end of travel; it does not lock or hold the load without continuous live air pressure. For applications requiring true load-holding, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-50S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-50S |
|---|---|
| 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 SAIJ125AX175-50S
| 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 SAIJ125AX175-50S Is Used
Machine Changeover
Dial in the exact retract distance from 125 to 175 mm when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders or reposition hard stops.
Heavy Pressing Operations
Leverage the 6136 N push force at 0.5 MPa for heavy-duty forming or pressing tasks, using the rear adjuster to precisely set the pressing depth and prevent over-travel.
Sensor-Driven Positioning
Utilize the integrated magnet with DMSE solid-state sensors to confirm end-of-stroke positions, ensuring the 50 mm adjustment window is accurately tracked by the control system.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-50S the Right Cylinder?
Selecting this 125 mm bore cylinder makes sense when your application requires substantial thrust—such as 6136 N push at 0.5 MPa—but also demands variable end stops for product changeovers. If your force requirements are lower, stepping down to a 100 mm bore yields 3927 N push force, whereas moving up to a 160 mm bore provides 10053 N. The adjustable stroke is ideal for fine-tuning the retract position during commissioning without adding external stops. As a dimensionally interchangeable ISO 15552 cylinder, ensure your replacement matches the 125 mm bore, 175 mm stroke, 50 mm adjustment, PT G1/2 port, and -S magnet specifications.
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 SAIJ125AX175-50S FAQ
At a standard 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 rated pressure of 1.0 MPa, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke back by up to 50 mm, creating a usable travel window of 125 to 175 mm. It only limits the travel end-point and does not hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.