Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-100S 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 SAIJ125AX750-100S
The AirTAC SAIJ125X750-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits an exact 650-750 mm usable travel window. Delivering 6136 N of push force at 0.5 MPa, it is engineered for heavy-duty positioning. This variant includes a SUS420J2 stainless steel rod and an integrated magnet for position sensing.
The rear adjuster acts purely as a mechanical stop to fine-tune the retract end during commissioning without needing external stops; it does not hold the load without live air. Operating at 30-500 mm/s, it utilizes PT tapered G1/2 ports and a 40 mm cushion. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-100S |
|---|---|
| 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 SAIJ125AX750-100S
| 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 SAIJ125AX750-100S Is Used
Heavy-Duty Positioning
Dial in the 650-750 mm travel window to precisely set heavy fixture endpoints during machine commissioning.
Product Changeover
Quickly adapt line stops for varying product lengths without physically replacing the entire cylinder body.
Automated Assembly
Provides robust 6136 N push force for large-scale press operations while allowing fine end-position tuning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX750-100S the Right Cylinder?
Select this 125 mm bore when 6136 N at 0.5 MPa is required for moving substantial masses; step down to an 80 mm bore if your application only needs 2513 N. The 100 mm adjustment range is ideal for accommodating product size changes on a line without physically swapping cylinders. For true load-holding without continuous air pressure, use an external rod lock or pilot-operated check valve, as the rear adjuster is strictly a travel stop.
Because the nominal stroke is 750 mm, the 32 mm rod requires an external guide to prevent excessive side-loading and premature seal wear. This cylinder is dimensionally interchangeable per ISO 15552 and includes a magnet for CMSE reed and DMSE solid-state 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 SAIJ125AX750-100S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. It can reach up to 11045 N push at 0.9 MPa.
The rear adjusting screw trims the effective travel back by up to 100 mm, creating a 650-750 mm usable window. It functions as a mechanical stop for end-position tuning and does not lock the load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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