Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-30 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 SAIJ125X1000-30
The AirTAC SAIJ125X1000-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 970 to 1000 mm usable travel window, allowing you to dial back the nominal 1000 mm stroke by up to 30 mm during machine setup. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it suited for heavy-duty positioning tasks.
This model uses a PT tapered G1/2 port and a 32 mm carbon steel rod with an M27x2 thread. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. Variable air cushions at both ends manage deceleration, but note that the rear adjuster acts only as a travel stop, not a load-holding lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-30 |
|---|---|
| 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 SAIJ125X1000-30
| 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 SAIJ125X1000-30 Is Used
Heavy-Duty Press Positioning
Dial in the exact 970 to 1000 mm end-stop during press setup to accommodate varying tooling heights without swapping cylinders.
Large Product Changeover
Adjust the retract position on the fly for different pallet sizes on a heavy-duty conveyor line.
Long-Stroke Assembly Stations
Fine-tune the final approach distance on long-stroke assembly machinery where fixed stops are impractical to bolt on.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X1000-30 the Right Cylinder?
Select this 125 mm bore size when a smaller 100 mm cylinder (providing 3927 N push at 0.5 MPa) lacks the thrust for your heaviest actuators, or step down if an 80 mm bore (2513 N) is sufficient. The adjustable stroke is ideal for fine-tuning end positions at commissioning without adding external stops. Because the stroke is 1000 mm, the long unsupported rod requires an external guide to prevent excessive side-load damage.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 125 mm bore, 1000 mm stroke, 30 mm adjustment range, PT G1/2 port, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). If your application requires holding the load without live air pressure, use an external rod lock or pilot-operated check valve, or select the SAIL or BSAI series instead.
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 SAIJ125X1000-30 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it provides up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel from the nominal 1000 mm down to a minimum of 970 mm. It sets the end position but does not lock the load without live air pressure.
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Standard models usually ship in 3-4 days.
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