Airtac SAIJ125 Adjustable Cylinder SAIJ125X70-10
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X70-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 70mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X70-10
The AirTAC SAIJ125X70-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 70 mm travel back by up to 10 mm. This yields a precise 60-70 mm usable stroke window, enabling exact end-position tuning at commissioning without adding external stops.
This model omits the FB, CA, CB, and CR mounts, offering a streamlined SAIJ mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts purely as a travel stop for deceleration, not a lock, so it will not hold the load without live air pressure. For position holding without pressure, consider the SAIL or BSAI variants.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X70-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X70-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 70 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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X70-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 SAIJ125X70-10 Is Used
Machine Changeover
Dial in the 60-70 mm travel window during product size transitions without replacing the cylinder or bolting on external stops.
End-Position Tuning
Use the rear adjuster screw to precisely set the retract end-stop during commissioning for high-accuracy heavy-duty pressing.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X70-10 the Right Cylinder?
The adjustable 60-70 mm travel window is ideal for product-size changeovers on a line, allowing you to fine-tune the end stop quickly instead of physically swapping a fixed-stroke SAI cylinder. Because the stroke is 70 mm, side-load risks are minimal, but an external guide remains recommended for heavy lateral loads. To match an ISO 15552 replacement, specify bore 125, stroke 70, adjustment 10, PT ports, and the required mounting accessory.
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 SAIJ125X70-10 FAQ
At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw lets you shorten the nominal 70 mm stroke by up to 10 mm, creating a 60-70 mm usable travel window. This stopper only sets the end position and does not lock or hold the load without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
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