Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75
The AirTAC SAIJ125X80-75 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 125 mm bore generating 8590 N of push force at 0.7 MPa, paired with an 80 mm nominal stroke that can be fine-tuned down by up to 75 mm. This yields a highly versatile 5-80 mm usable travel window, allowing exact end-position calibration during commissioning.
The extruded aluminum barrel incorporates sensor grooves on both sides, and the carbon steel rod with an M27x2 thread provides a robust interface for high side-load tolerance. The rear adjuster acts purely as a mechanical stop for position tuning and does not lock the load without live air pressure. It supports a speed range of 30-500 mm/s and includes adjustable air cushions at both ends to decelerate heavy moving masses smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAIJ125X80-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAIJ125X80-75 Is Used
Variable Product Changeover
Dial in the 5-80 mm travel window on the fly to accommodate different package sizes or part lengths on a single production line without changing out tooling.
Heavy-Duty End Tuning
Leverage the 8590 N push force at 0.7 MPa for high-thrust forming or pressing tasks while using the rear adjuster to set the exact bottoming position during machine commissioning.
Adjustable Material Stops
Use the cylinder as an adjustable physical stop for heavy workpieces, relying on the M27x2 threaded carbon steel rod to withstand significant impact and side loads.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75 the Right Cylinder?
Select this 125 mm bore cylinder when an application requires substantial thrust—such as the 8590 N push force at 0.7 MPa—combined with highly variable end-stop positioning. If the full 75 mm adjustment range is unnecessary, stepping down to an 80 mm bore saves space while still providing 3518 N at 0.7 MPa. Choose the adjustable SAIJ format over a fixed-stroke SAI when you need to accommodate multiple product sizes on a single line without swapping cylinders or adding external stops.
For an exact ISO 15552 replacement match, verify the 125 mm bore, 80 mm stroke, 75 mm adjustment code, PT tapered port thread, and mounting style. Note that SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. Because the rear screw is a travel stop and not a locking device, any requirement to hold a load without continuous air pressure necessitates a SAIL (air-released lock) or BSAI (clamp-lock) cylinder 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 SAIJ125X80-75 FAQ
The rear adjuster acts as an external mechanical stopper that lets you trim the effective travel back by up to 75 mm. With the 80 mm nominal stroke, this creates a usable travel window of 5-80 mm, allowing you to fine-tune the retracted end position without swapping the cylinder.
At an operating pressure of 0.7 MPa, this 125 mm bore cylinder generates a push force of 8590 N and a pull force of 5734 N. It can deliver up to 11045 N of push force at 0.9 MPa.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125X80-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.