This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X75-10, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X75-10, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X75-10
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10
The AirTAC SIJ125X75-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 75 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 65-75 mm end position. The stop sets the end position and is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or pilot-operated check valve for held loads.
The direct replacement is the SAIJ125X75-10, retaining the same ISO 15552 mounting interface, force, and adjust window. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnetic SKU cannot take a switch; add -S for sensing.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X75-10 |
| Bore size | Ø125 mm |
| Stroke | 75 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ125X75-10 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAIJ125X75-10 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10 Is Used
Press Fit Tuning
Trimming the extend stroke by up to 10 mm on-site allows precise press-fit depth adjustment without machining spacer plates on heavy-duty assembly lines.
Divert Stop Positioning
Field-tuning the 65-75 mm extend stroke lets operators dial in the exact divert stop position for varying product lengths on a conveyor belt.
Pallet Clamp Alignment
Adjusting the end position on-site accommodates minor pallet width variations, ensuring consistent clamping force in a warehouse handling cell.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10 with the SAIJ125X75-10
To replace the discontinued SIJ125X75-10, order the SAIJ125X75-10 direct, which preserves the G1/2 port, M27x2 rod thread, and FA/LB/TC mountings. Select the 10 mm adjust window if you need to trim the extend stroke on-site for exact positioning. Because this SKU lacks a magnet, it cannot take a sensor; choose -S if you need legacy CS1-B/DS1-B switch accuracy. For strokes over 300 mm, verify your side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X75-10
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X75-10 FAQ
Yes, the SIJ125X75-10 is discontinued. The direct replacement is the SAIJ125X75-10, which shares the same ISO 15552 interface, 125 mm bore, 75 mm stroke, 10 mm adjust window, and G1/2 port. The SAIJ family also adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
The external stop screw provides a 10 mm adjust window, allowing you to trim the extend stroke from 75 mm down to 65 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X75-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X75-10 replacement — usually within 7-8 hours.