Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10
The AirTAC SAIJ125X125-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 115-125 mm usable travel window. It delivers 6136 N of pull force at 0.5 MPa, making it suited for heavier positioning tasks. The piston rod uses SUS420J2 stainless steel (code A) for improved corrosion resistance, and the extruded aluminum barrel includes sensor grooves on both sides.
This model uses a PT tapered port thread (G1/2) and operates at speeds of 30-500 mm/s. The rear screw acts purely as a mechanical stop to fine-tune the retract end-position during commissioning or product changeovers without adding external stops. It is not a locking device, so load holding without live air requires a SAIL or BSAI cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SAIJ125AX125-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SAIJ125AX125-10 Is Used
Machine Setup Tuning
Dial in the exact retract position during initial commissioning without swapping out the entire cylinder or fabricating external stop blocks.
Product Changeover
Quickly adapt the end-stop by up to 10 mm on a packaging line when switching to a slightly different product size or thickness.
Heavy Clamping Stops
Leverage the 6136 N pull force to secure heavy workpieces while using the rear adjuster to set the precise clamping depth.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX125-10 the Right Cylinder?
Select this 125 mm bore when a 100 mm bore (offering 3681 N pull at 0.5 MPa) is insufficient, but a 160 mm bore is oversized. The 10 mm adjustment range is ideal for applications needing slight end-position tweaks rather than massive travel changes. To match this ISO 15552 cylinder for replacement, verify the 125 mm bore, 125 mm stroke, 10 mm adjust, PT port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the stroke is under 300 mm, side-load risks are lower, though the robust 32 mm rod and M27x2 thread handle typical loads effectively.
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 SAIJ125AX125-10 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force at 0.7 MPa. The maximum operating pressure is 1.0 MPa.
The rear adjuster screw allows you to shorten the effective stroke from the nominal 125 mm down to 115 mm. It functions as a travel stop for end-position tuning and does not lock the load without live air pressure.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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