Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-100
The AirTAC SAIJ125X260-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 160 to 260 mm, allowing you to dial back the nominal 260 mm stroke by up to 100 mm during machine setup or product changeovers. Delivering 6136 N of pull force at 0.5 MPa, it handles heavy loads with a 32 mm stainless steel (SUS420J2) piston rod.
This model uses a PT tapered G1/2 port and operates at speeds of 30-500 mm/s. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR to focus on rigid linear and center-line setups.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 260 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 SAIJ125AX260-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×260 | 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 SAIJ125AX260-100 Is Used
Product Changeovers
Dial in the exact 160 to 260 mm end-position during format size changes on packaging lines without replacing the cylinder.
Machine Setup Tuning
Fine-tune the retract stroke end during commissioning to perfect pressing or clamping depth on heavy assemblies.
Variable End Stops
Adjust the travel limit dynamically for sorting diverter arms handling varied package sizes on a conveyor.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-100 the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore (offering 3681 N pull at 0.5 MPa) lacks the power to move your payload, but a 160 mm bore is physically too large. The 100 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, eliminating the need to physically swap cylinders or add external mechanical stops. At 260 mm stroke, the 32 mm rod provides excellent rigidity, but an external guide rail is still recommended to manage side loads.
For an ISO 15552 replacement, match the 125 mm bore, 260 mm stroke, 100 mm adjuster, PT G1/2 port, SUS420J2 rod, and the required mounting kit. Note that the rear adjuster acts only as a travel stop to set deceleration; it does not hold the load without live air. For true load-holding without continuous pressure, use an AirTAC SAIL or BSAI cylinder.
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 SAIJ125AX260-100 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force. At 0.9 MPa, the push force reaches 11045 N.
A rear screw stopper lets you trim the effective travel back from the 260 mm nominal stroke, creating a usable 160 to 260 mm window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without air pressure.
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