Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40 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 SAIJ125X60-40
The AirTAC SAIJ125X60-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. By integrating an external adjusting screw at the rear, this cylinder allows you to fine-tune the end position at commissioning without swapping out the entire unit or adding external stops. It features a carbon steel piston rod and PT tapered port threads.
With a 60 mm nominal stroke and a 40 mm adjustment code, this model provides a usable travel window of 20 to 60 mm. This wide adjustment range is ideal for product-size changeovers on a line, letting you dial in the exact retraction point. The extruded aluminum barrel includes sensor grooves on both sides, and adding a magnet (-S) later enables tracking with CMSE reed or DMSE electronic solid-state switches.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40 |
|---|---|
| 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 SAIJ125X60-40
| 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 SAIJ125X60-40 Is Used
Variable End-Stop Positioning
Dial in the exact retraction point within the 20-60 mm travel window during machine commissioning to accommodate different product dimensions without mechanical rebuilds.
Heavy-Duty Forming Setup
Leverage the 6136N push force at 0.5 MPa for pressing or forming tasks, using the rear screw to fine-tune the stroke end-point for precise material engagement.
Automated Line Changeover
Quickly adjust the cylinder's effective stroke on the factory floor when switching production runs, using the 40 mm adjustment range to adapt to new package or part sizes rapidly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40 the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder (providing 2513N push at 0.5 MPa) cannot generate enough force, but before stepping up to a 160 mm bore (10053N) which consumes significantly more machine footprint. The adjustable stroke is selected over a fixed SAI cylinder when a process demands a variable end-stop for rapid machine setup or product changeovers. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 60 mm stroke, 40 mm adjustment range, PT port threads, and mounting choice. SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Because the 32 mm rod diameter and M27x2 rod thread handle substantial side loads, this cylinder is well-suited for robust applications, though any long unsupported stroke still requires an external guide.
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 SAIJ125X60-40 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster screw allows you to trim the effective stroke back by up to 40 mm from the 60 mm nominal stroke, creating a usable travel window of 20 to 60 mm. This stopper sets the travel end-point but does not lock or hold the load without continuous air pressure.
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