Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 60mm 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
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-20
The AirTAC SAIJ125X60-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers substantial thrust, providing 6136N push and 5734N pull force at 0.5 MPa. By integrating a 20mm adjustment mechanism, this model creates a usable travel window between 40 and 60mm, allowing precise end-position tuning without swapping out the entire unit.
Featuring a robust 32mm carbon steel rod and an M27x2 thread, it handles high mechanical stress effectively. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting. While the rear adjuster and built-in air cushions fine-tune travel endpoints, they do not secure the load mechanically without continuous air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 60 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 SAIJ125X60-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SAIJ125X60-20 Is Used
Heavy Press Fitting
Dial in the exact 40-60mm travel window during machine setup to apply 6136N of force for pressing heavy components without overtravel.
Product Changeover
Quickly adjust the rear stopper to accommodate different material thicknesses on the line, avoiding the need to swap out fixed-stroke cylinders.
End-Stop Calibration
Fine-tune the retraction end position during commissioning to achieve precise alignment in heavy-duty automated assembly equipment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-20 the Right Cylinder?
Select this 125mm bore size when an application requires heavy force that smaller bores cannot achieve, such as stepping up from a 100mm bore that yields 3927N push at 0.5 MPa. The adjustable stroke is ideal for product changeovers, enabling operators to dial in the exact 40-60mm travel distance on the fly instead of installing fixed external stops or ordering a custom SAI cylinder. To ensure safe operation, remember the adjuster acts only as a travel stop; for load-holding without live air, consider an SAIL or BSAI variant.
When replacing an ISO 15552 cylinder, verify the 125mm bore, 60mm nominal stroke, 20mm adjustment range, PT tapered port, and mounting style. The SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Although the 60mm stroke is short, always ensure the rod thread is properly aligned to prevent side-load wear.
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 SAIJ125X60-20 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can deliver up to 11045N push force at 0.9 MPa.
The rear adjuster allows you to shorten the 60mm nominal stroke by up to 20mm, creating a usable travel window of 40 to 60mm. This lets you fine-tune the end position at commissioning without adding external stops.
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