Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-10
The AirTAC SAIJ125X750-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits precise end-position tuning. It provides a usable travel window of 740 to 750 mm, allowing you to dial back the stroke by up to 10 mm during commissioning without adding external stops. Delivering 6136 N of pull force at 0.5 MPa, it is built for heavy-duty positioning.
This unit integrates a SUS420J2 stainless steel rod for superior corrosion resistance and features PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. Operating at speeds of 30-500 mm/s, it utilizes adjustable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 750 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 SAIJ125AX750-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×750 | 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 SAIJ125AX750-10 Is Used
Machine Setup Changeover
Fine-tune the 740-750 mm retract end-stop during product family changeovers to accommodate varying material lengths without swapping the cylinder.
Heavy-Duty Positioning
Leverage the 6136 N pull force to shift heavy pallets or chassis frames into exact alignment before a secondary clamping operation.
Variable End-Stop Diverter
Adjust the travel distance by up to 10 mm on a packaging line to alter the resting position of bulky goods prior to wrapping.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-10 the Right Cylinder?
Select this 125 mm bore when an application requires substantial thrust—such as the 6136 N pull force at 0.5 MPa—along with micro-adjustability at the retract end. If your setup demands less force, stepping down to an 80 mm bore yields 2268 N of pull force, whereas upgrading to a 160 mm bore provides 9425 N. The rear adjuster acts purely as a mechanical stop to fine-tune the 740-750 mm travel window; it does not hold the load without live air pressure. For position-holding requirements without continuous air, consider an external pilot-operated check valve or the AirTAC SAIL locking cylinder.
Because the 750 mm stroke is substantial, the 32 mm rod diameter should be supported by an external guide to prevent excessive side-loading and premature wear. To replace an ISO 15552 cylinder, match the 125 mm bore, 750 mm stroke, 10 mm adjustment, PT G1/2 port, and the appropriate mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ125AX750-10 FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 N of pull force and 8590 N of push force. At the maximum rated pressure of 1.0 MPa, it delivers up to 1251 kgf.
The rear mechanical stopper allows you to shorten the effective travel from the nominal 750 mm down to 740 mm. This provides a 10 mm tuning window for precise end-position calibration during commissioning without changing the cylinder.
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