Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10 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 SAIJ125AX150-10
The AirTAC SAIJ125X150-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It provides a nominal 150mm travel that can be dialed back by up to 10mm, creating a precise 140-150mm usable window for fine-tuning the retract end position during commissioning. Delivering a robust 6136N pull force at 0.5MPa, it handles heavy loads while maintaining dimensional interchangeability with standard ISO 15552 mounting interfaces.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel incorporates sensor grooves on both sides, though this specific unit ships without a magnet, meaning electronic DMSE or reed CMSE position sensing is not supported without a model suffix change. The integrated air cushions at both ends decelerate the heavy 125mm bore piston, but the rear adjuster acts only as a travel stop, not a load-holding lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10 |
|---|---|
| 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 SAIJ125AX150-10
| 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 SAIJ125AX150-10 Is Used
Machine Setup Fine-Tuning
Dial in the exact 140-150mm retract position during initial commissioning to align heavy stamping or pressing tools without adding external shims.
Product Size Changeover
Quickly adjust the end-stop up to 10mm when switching a conveyor line to accommodate a slightly shorter product format, minimizing downtime.
Heavy Load Positioning
Leverage the 6136N pull force to shift heavy pallets or chassis components into place, relying on the rear screw to set the final precise resting point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-10 the Right Cylinder?
Choose this 125mm bore cylinder when your application requires 6136N of pull force at 0.5MPa and demands exact end-position tuning without swapping components. If your setup only needs 4523N of push force, stepping down to an 80mm bore saves space, while moving up to a 160mm bore yields 9425N of pull for heavier masses. The 10mm adjustment range is ideal for product changeovers on a line, allowing operators to dial in the exact 140-150mm travel limit on the fly instead of machining external stops.
For an exact ISO 15552 replacement match, verify your bore, 150mm stroke, 10mm adjustment, PT port threads, and the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting set. Because the rear adjuster and air cushions only manage travel deceleration and do not hold the load without live air, any requirement for true position holding requires a SAIL or BSAI variant. Additionally, with a 150mm stroke, the 32mm rod diameter provides excellent rigidity, but long unsupported loads should still use an external guide to prevent side-load wear.
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 SAIJ125AX150-10 FAQ
At 0.5MPa it provides 6136N of push force and 5734N of pull force. At 0.7MPa the push increases to 8590N, reaching a maximum of 11045N at 0.9MPa.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 150mm nominal stroke by up to 10mm. This creates a 140-150mm usable travel window for fine-tuning the end position without replacing the cylinder.
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