Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30
The AirTAC SAIJ125X130-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 100 to 130 mm, allowing you to dial back the nominal 130 mm stroke by up to 30 mm during commissioning without swapping out the unit. The SUS420J2 stainless steel rod (code A) offers improved corrosion resistance, while the extruded aluminum barrel maintains a standard ISO 15552 mounting interface.
Delivering 6136 N of push force and 5734 N of pull force at 0.5 MPa, this cylinder handles heavy loads with a 30-500 mm/s speed range. The PT tapered port threads ensure a tight pneumatic seal. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position; it does not hold the load without live air pressure, so applications requiring true load-holding should utilize an external rod lock or a SAIL cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 130 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 SAIJ125AX130-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SAIJ125AX130-30 Is Used
Product Changeover
Quickly reconfigure the retract depth by up to 30 mm on packaging lines handling varying container sizes without replacing the cylinder.
Heavy Pressing
Utilize the 6136 N push force for heavy-duty assembly tasks, fine-tuning the exact end-position to prevent over-travel damage.
Machine Setup
Dial in the precise 100 to 130 mm travel window during initial commissioning to synchronize multiple actuators on a large fixture.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30 the Right Cylinder?
Choose this 125 mm bore cylinder when your application requires high thrust (up to 6136 N at 0.5 MPa) alongside variable end-stop positioning. If you need less force, stepping down to a 100 mm bore provides 3927 N of push force. The adjustable 100-130 mm travel window is ideal for machine setups requiring frequent product-size changeovers, replacing the need to bolt on external stops or swap a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify the 125 mm bore, 130 mm stroke, 30 mm adjustment, PT port thread, and your required mounting style.
Because the stroke is 130 mm, side-load considerations are minimal, but the 32 mm rod diameter and M27x2 thread provide excellent rigidity for heavy pushing tasks. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR brackets entirely. Note that without a magnet (-S), this unit cannot host CMSE or DMSE electronic sensors.
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 SAIJ125AX130-30 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa, it can deliver up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 130 mm down to 100 mm. It sets the retract end position but does not lock the load without continuous air pressure.
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