Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10S
The AirTAC SAIJ125X150-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod (code A) and a built-in magnet for position sensing. The integrated rear stopper allows you to fine-tune the end position during commissioning without adding external stops.
With a nominal stroke of 150mm and a 10mm adjustment range, this SKU provides a usable travel window of 140-150mm. It uses PT tapered ports and operates at speeds of 30-500mm/s. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAIJ125AX150-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SAIJ125AX150-10S Is Used
Changeover Calibration
Dial in the 140-150mm travel window precisely when switching a machining line to a new product family, avoiding the need to physically swap cylinders.
Heavy Clamping Stops
Leverage the 6136N push force to secure heavy workpieces, using the rear stopper to micro-adjust the clamp position without reprogramming the machine.
Sensor-Driven Positioning
Utilize the integrated magnet with DMSE solid-state or CMSE reed sensors to confirm end-of-stroke arrival within the adjusted travel range.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10S the Right Cylinder?
Choose this 125mm bore when a 100mm bore (3927N push at 0.5 MPa) lacks the thrust for moving heavy fixtures, but a 160mm bore (10053N) would be physically oversized. The 10mm adjustable window is ideal for dialing in exact end-stops during product changeovers. If you need to hold a load statically without live air pressure, select a SAIL locking cylinder or a BSAI clamp-lock instead, as the SAIJ rear adjuster is strictly a travel stop.
For an exact ISO 15552 replacement, match the 125mm bore, 150mm stroke, PT port thread, and -S magnet requirement. Because the 150mm stroke is relatively short for this bore, side-load stress is minimal, but you should still ensure the rod thread (M27x2) is aligned correctly with your load coupling to prevent 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 SAIJ125AX150-10S FAQ
At 0.5 MPa operating pressure, it provides 6136N of push force and 5734N of pull force. If you increase pressure to 0.7 MPa, the push force rises to 8590N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 150mm down to 140mm. It only sets the travel end and does not lock the load without air pressure.
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