Airtac SAIJ125 Adjustable Cylinder SAIJ125X500-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X500-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X500-10
The AirTAC SAIJ125X500-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a robust 6136N push force at 0.5 MPa and features a 500mm nominal stroke that can be fine-tuned down by up to 10mm, yielding a precise 490-500mm usable travel window. This built-in adjustability allows operators to dial in the exact retract end position during commissioning without adding external stops.
This large-bore pneumatic actuator utilizes a PT tapered port thread and a 32mm carbon steel rod. Because the stroke extends to 500mm, the M27x2 rod thread and substantial piston rod diameter are designed to handle significant loads, though an external guide is strongly recommended to prevent excessive side-loading on the long unsupported barrel. The extruded aluminum profile includes sensor grooves on both sides for straightforward position feedback.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X500-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X500-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 500 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 SAIJ125X500-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×500 | 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 SAIJ125X500-10 Is Used
Heavy-Duty Press Fit
Delivers 6136N of push force at 0.5 MPa for driving large components into rigid housings, with the 10mm adjuster allowing precise control over the final press depth.
Product Changeover Stops
Ideal for heavy conveyor lines processing varied pallet sizes, letting operators quickly tune the 500mm retract position by up to 10mm without swapping out the actuator.
Large Assembly Tooling
Provides the robust clamping power needed for large-scale fabrication, using the adjustable end-stop to compensate for material thickness variations on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X500-10 the Right Cylinder?
Selecting this 125mm bore actuator makes sense when your application requires heavy thrust that smaller cylinders cannot provide, such as stepping down from a 160mm bore which yields 10053N at 0.5 MPa. The adjustable rear stopper is ideal for product changeovers or fine-tuning the end position on the fly, a distinct advantage over a fixed-stroke SAI cylinder. When matching your ISO 15552 replacement, verify the 500mm stroke, 10mm adjustment range, PT port thread, and the specific mounting set which includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the stroke is 500mm, you must account for side-load forces on the extended rod; always use an external guide to support the load. Remember that the rear adjuster functions strictly as a travel stop, not a locking device. If your setup requires true load-holding without continuous live air pressure, you should integrate an external rod lock or look into the AirTAC SAIL or BSAI locking cylinder series.
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 SAIJ125X500-10 FAQ
At a standard 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 8590N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 10mm, creating a 490-500mm travel window. This allows for fine-tuning the end position during setup without replacing the cylinder.
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 SAIJ125X500-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.