Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-75 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 SAIJ125X260-75
The AirTAC SAIJ125X260-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window anywhere between 185 and 260 mm. Built with an extruded aluminum barrel and a robust 32 mm carbon steel rod, it delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa. The PT tapered G1/2 port threads match the heavy-duty bore class, while variable air cushions at both ends manage end-of-stroke deceleration.
This adjustable model shines during machine setup and product-size changeovers, letting you dial in the exact end position without swapping hardware or bolting on external stops. It supports standard SAIJ mounting interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2) and operates at speeds of 30-500 mm/s. Remember that the rear adjuster acts only as a travel stop; for load-holding without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-75 |
|---|---|
| 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 SAIJ125X260-75
| 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 SAIJ125X260-75 Is Used
Product Changeover Dials
Leverage the 75 mm adjuster to shift the end-stop across a 185-260 mm window instantly, accommodating varying package sizes on a single line without changing cylinders.
Commissioning Fine-Tuning
Trim the final end-position by millimeters during machine setup to perfect pressing or clamping depth, avoiding the cost of custom-machined external stoppers.
Heavy Assembly Press
Utilize the 6136 N push force at 0.5 MPa to seat large components, relying on the 32 mm carbon steel rod and variable air cushions to absorb impact at the travel ends.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-75 the Right Cylinder?
Select this 125 mm bore when your application requires high thrust—6136 N at 0.5 MPa—and demands a variable end-stop. If you need less force, stepping down to an 80 mm bore yields 2513 N of push force at the same pressure. The 75 mm adjustment range is ideal for production lines running multiple product sizes, providing a wide 185-260 mm usable travel window that eliminates the need for custom-cut fixed-stroke SAI cylinders.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 260 mm nominal stroke, PT G1/2 port, and the required mounting accessory. Because this SKU features a 260 mm stroke, ensure your external guide handles side loads to prevent premature rod wear. This unit lacks a magnet; add the -S suffix if you require CMSE reed or DMSE electronic sensors for position feedback.
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 SAIJ125X260-75 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. It can reach a maximum push force of 11045 N at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the 260 mm nominal stroke by up to 75 mm, providing an effective travel window of 185 to 260 mm. This stopper only sets the end position; it does not lock or hold the load without continuous air pressure.
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