Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10
The AirTAC SAIJ125X30-10 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 125mm bore, a PT G1/2 port, and a 32mm carbon steel rod. By integrating an external adjusting screw, this model provides a usable travel window of 20-30mm, allowing you to trim the effective stroke by up to 10mm without swapping the cylinder.
This adjuster functions strictly as a mechanical stop to fine-tune the retract end position during commissioning; it does not lock or hold the load without live air. For load-holding requirements, consider the SAIL or BSAI variants. The extruded aluminum barrel includes sensor grooves on both sides, and because this configuration omits the magnet, you would need to specify the -S option to utilize CMSE reed or DMSE electronic sensors.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAIJ125X30-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SAIJ125X30-10 Is Used
Precision End-Stop Tuning
Dial in the exact clamping distance within a 20-30mm window during machine setup, using the rear screw to trim up to 10mm without adding external stops.
Product-Size Changeover
Quickly adjust the retract position on a packaging line when switching between different product heights, leveraging the 6136N force to handle heavy items.
Heavy-Duty Forming
Apply massive pressing force with precise depth control, using the mechanical stop to prevent over-travel on sensitive workpieces.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10 the Right Cylinder?
Select this 125mm bore cylinder when an application demands high force (6136N push at 0.5 MPa) alongside precise end-position tuning. If you need less force, stepping down to a 100mm bore yields 3927N, but the SAIJ125X30-10 is optimal when you require a short 20-30mm adjustable stroke window for product-size changeovers. The robust 32mm carbon steel rod and M27x2 thread handle significant side loads, though external guides are always recommended for maximizing cylinder life.
When replacing an ISO 15552 cylinder, match the 125mm bore, 30mm nominal stroke, 10mm adjustment range, PT G1/2 port, and carbon steel rod. This model supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It operates efficiently at speeds between 30-500mm/s, utilizing variable air cushions at both ends to decelerate the heavy payload smoothly.
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 SAIJ125X30-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that allows you to shorten the 30mm nominal stroke by up to 10mm, creating a 20-30mm usable travel window. It only sets the end position and does not hold the load without continuous air pressure.
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