Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10S 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 SAIJ125X750-10S
The AirTAC SAIJ125X750-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 6136N of pull force at 0.5 MPa and provides a usable travel window of 740 to 750 mm, letting you fine-tune the retract end position by up to 10 mm during commissioning.
This model includes a magnet for CMSE reed and DMSE electronic sensors, with a standard carbon steel rod and PT tapered ports. The extruded aluminum barrel integrates sensor grooves on both sides, and the rear adjuster acts purely as a travel stop for deceleration rather than a load-holding lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10S |
|---|---|
| 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 SAIJ125X750-10S
| 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 SAIJ125X750-10S Is Used
Variable End-Stop Machining
Dial in the 740-750mm retract position to machine different part lengths without swapping cylinders or adding external mechanical stops.
Product Changeover Diverter
Quickly adjust the stroke by up to 10mm to reposition a diverter arm for varying package sizes on a packaging line.
Long-Stroke Assembly Press
Leverage 6136N pull force for heavy assembly tasks while fine-tuning the end-of-travel position to perfect component seating.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X750-10S the Right Cylinder?
Choose this 125mm bore when you need substantial thrust—stepping down to a 100mm bore drops the 0.5 MPa pull force to 3681N. The 10mm adjustment range is perfect for variable end-stops or product-size changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder. For load-holding without live air pressure, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is only a stop.
When replacing an ISO 15552 cylinder, match the 125mm bore, 750mm stroke, 10mm adjustment, PT G1/2 ports, and the -S magnet. Because the 750mm stroke is long, an external guide is recommended to manage side-load on the 32mm rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ125X750-10S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 8590N of push force at 0.7 MPa.
The rear adjuster screw lets you shorten the effective travel from 750mm down to 740mm. It acts as a travel stop to fine-tune the end position and is not a lock; it cannot hold 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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