Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-50S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 60mm 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
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-50S
The AirTAC SAIJ125X60-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 60 mm stroke that can be fine-tuned down by up to 50 mm, yielding a highly versatile 10-60 mm usable travel window. Delivering a robust 6136 N pull force at 0.5 MPa, it handles heavy-duty positioning with ease.
This variant features an SUS420J2 stainless steel rod for superior corrosion resistance and includes a piston magnet (-S) for position sensing with CMSE or DMSE switches. The extruded aluminum barrel integrates sensor grooves on both sides, and the rear adjuster acts purely as a travel stop to decelerate the end-of-stroke position without holding the load.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-50S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 60 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 SAIJ125AX60-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SAIJ125AX60-50S Is Used
Product Changeovers
Leverage the 10-60 mm travel window to rapidly adjust end-stops during packaging line product size transitions without mechanical rebuilds.
Machine Setup
Fine-tune the exact retract position during initial commissioning, using the rear stopper to perfect the stroke end-point dynamically.
Heavy Positioning
Utilize the 6136 N pull force and SUS420J2 stainless rod for robust, corrosion-resistant actuation in demanding fabrication cells.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-50S the Right Cylinder?
Choose this 125 mm bore when you need substantial thrust that exceeds the 3927 N push force of a 100 mm cylinder at 0.5 MPa, but want to avoid the excessive bulk of a 160 mm unit. The 50 mm adjustment range is ideal for machine setups requiring frequent product-size changeovers, allowing you to dial in the exact end-stop without swapping cylinders or adding external mechanical stops.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 60 mm stroke, 50 mm adjustment, PT G1/2 port, and the -S magnet. Because the stroke is under 300 mm, side-load stress is minimal, but the 32 mm rod still requires an external guide for heavy lateral loads. Remember that the rear adjuster is not a lock; for load-holding without live air pressure, consider the SAIL or BSAI series.
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 SAIJ125AX60-50S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of pull force and 6136 N of push force. At the maximum 1.0 MPa pressure, it delivers up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 60 mm nominal stroke by up to 50 mm. This creates a 10-60 mm usable travel window for precise end-position tuning without replacing the cylinder.
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