Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-75
The AirTAC SAIJ125X1000-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 925-1000 mm, allowing you to dial back the nominal 1000 mm stroke by up to 75 mm during commissioning. Delivering 6136N of push force at 0.5 MPa, it handles heavy-duty positioning. The extruded aluminum barrel includes dual sensor grooves, and the carbon steel rod has an M27x2 thread for robust load attachment.
Unlike a fixed-stroke SAI, the external rear stopper lets you fine-tune end positions on product changeovers without swapping the cylinder or adding external stops. Note that the rear adjuster acts as a travel stop, not a lock; it will not hold the load without live air. For load-holding without pressure, consider an SAIL or BSAI cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAIJ125X1000-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SAIJ125X1000-75 Is Used
Large Material Handling
Adjusts the extended end-stop for varying product lengths on heavy conveyor lines without physical modifications.
Machine Changeover
Dials in the exact 925 to 1000mm stroke during setup, accommodating different part sizes on the fly.
Heavy Assembly Presses
Provides robust 6136N thrust at 0.5MPa for pressing components, with rear fine-tuning to prevent over-travel.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-75 the Right Cylinder?
Choose this 125mm bore when 80mm (2513N at 0.5MPa) is too weak or 160mm (10053N) is oversized. The adjustable 925-1000mm travel is ideal for variable end-stops on large machines. Because the 1000mm stroke is long and unsupported, an external guide is required to prevent excessive side-loading on the M27x2 rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). Ports are PT tapered, with no magnet specified.
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 SAIJ125X1000-75 FAQ
The rear adjuster acts as an external stop, letting you trim the effective travel anywhere in a 925-1000 mm window. It sets the end position but does not lock or hold the load without live air pressure.
At 0.5 MPa, the 125mm bore provides 6136N push and 5734N pull force. Operating speed ranges from 30-500 mm/s, and it is dimensionally interchangeable per ISO 15552.
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