Airtac SAIJ125 Adjustable Cylinder SAIJ125AX170-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX170-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX170-10
The AirTAC SAIJ125X170-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. Its external adjustment screw allows you to trim the effective travel within a 160-170mm window, providing precise end-position tuning without swapping out the entire unit. The extruded aluminum barrel features sensor grooves on both sides for straightforward detection integration.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and PT tapered port threads. It operates at speeds between 30-500mm/s and includes variable air cushions at both ends to manage deceleration. The rear stopper sets the travel limit but does not lock the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX170-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX170-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 170 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 SAIJ125AX170-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×170 | 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 SAIJ125AX170-10 Is Used
Machine Setup Changeover
Dial in the 160-170mm retract position exactly when switching between product sizes on a machining line, avoiding mechanical hard-stop replacements.
Variable End-Stop Actuation
Provides 6136N of thrust for clamping or pressing assemblies while allowing up to 10mm of rear adjustment to compensate for mechanical tolerance stack-up.
Commissioning Fine-Tuning
Safely trim the stroke during initial startup to prevent over-travel damage, using the rear screw to set the precise end-of-stroke position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX170-10 the Right Cylinder?
Choose this 125mm bore cylinder when a 63mm bore (providing 1559N push at 0.5MPa) cannot meet your thrust requirements, or step down if the 6136N output is excessive for your application. The 10mm adjustable window is ideal for fine-tuning the retract end during commissioning or product changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot provide. For load-holding without continuous air pressure, an external rod lock or a SAIL pneumatic lock cylinder is required, as the SAIJ adjuster functions solely as a travel stop.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 125mm bore, 170mm nominal stroke, 10mm adjustment range, PT port threads, and the SUS420J2 rod material. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since the 170mm stroke is under 300mm, side-load stress is moderate, but external guides remain recommended for optimal rod bearing life.
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 SAIJ125AX170-10 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 170mm nominal stroke by up to 10mm, resulting in a usable travel window of 160-170mm. It sets the end position but does not hold the load without live air pressure.
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