Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10
The AirTAC SAIJ125X15-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It uses a PT tapered port and a robust 32mm carbon steel rod. By turning the rear screw, you can trim the 15mm nominal stroke back by up to 10mm, creating a highly precise 5-15mm usable travel window for exact short-stroke setups.
This adjustable stopper allows you to fine-tune the end position at commissioning without adding external stops. The extruded aluminum barrel features sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 15 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 SAIJ125X15-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×15 | 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 SAIJ125X15-10 Is Used
Short-Stroke Pressing
Dial in the exact 5-15mm travel window for heavy pressing tasks that require precise end-position control without external stoppers.
Machine Changeover
Quickly adjust the rear screw during product size changeovers to alter the stroke endpoint without replacing the entire cylinder.
Heavy Clamping Setup
Leverage the 6136N push force for robust clamping, fine-tuning the 15mm stroke at commissioning to accommodate material thickness variations.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10 the Right Cylinder?
Select this 125mm bore when a heavy short-stroke push is required but exact end-position tuning is critical, avoiding the need to swap cylinders for a few millimeters of difference. If 6136N push force at 0.5 MPa is excessive, stepping down to the 80mm bore yields 2513N. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. To replace an ISO 15552 cylinder, match the 125mm bore, 15mm stroke, 10mm adjustment, PT port, and mounting style.
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 SAIJ125X15-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach up to 11045N push force at 0.7 MPa.
The rear adjuster screw lets you trim the effective travel by up to 10mm. This creates a usable 5-15mm travel window, allowing precise end-position tuning during setup without changing the cylinder.
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