This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X25-10S, 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 SIJ125X25-10S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X25-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 25mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X25-10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X25-10S
- 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 SIJ125X25-10S
The AirTAC SIJ125X25-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 25 mm nominal stroke. An external stop screw allows you to trim the extend stroke by up to 10 mm on-site, yielding a usable 15-25 mm extend window. The direct replacement is the SAIJ125X25-10S, sharing the same interface, force, and mounting.
The SAIJ successor retains the 32 mm rod, M27x2 thread, and 40 mm adjustable cushions, but upgrades to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. The stop screw sets end position only; it is not a load lock.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X25-10S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X25-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X25-10S |
| Bore size | Ø125 mm |
| Stroke | 25 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 SAIJ125X25-10S 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 SAIJ125X25-10S 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 SIJ125X25-10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 SIJ125X25-10S Is Used
Short-Stroke Clamping
Apply up to 6136 N of clamping force at 0.5 MPa while trimming the final 0-10 mm of contact position on-site to accommodate fixture tolerances.
Component Seating
Press parts into housings using a 15-25 mm extend window, adjusting the stop screw to dial in the exact seating depth without re-plumbing the G1/2 air lines.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X25-10S with the SAIJ125X25-10S
To replace the discontinued SIJ125X25-10S, order the direct replacement SAIJ125X25-10S, which preserves the G1/2 port, 32 mm rod, and ISO 15552 mounting dimensions. Choose the 10 mm adjust window when you need precise 15-25 mm extend tuning on-site. Reuse existing FA, LB, or TC mounts directly. The -S magnet supports legacy CS1-B/DS1-B sensors. Because the 25 mm stroke is under 300 mm, side-load lever arm risks are minimal. For load holding on air loss, select an external rod lock or SAIL/BSAI variant, as the stop screw is not a brake.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X25-10S
- ✓ 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 SIJ125X25-10S FAQ
Yes, the SIJ125X25-10S is discontinued. The direct replacement is the SAIJ125X25-10S. It shares the same ISO 15552 interface, 125 mm bore, 25 mm stroke, 10 mm adjust window, G1/2 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 10 mm adjust window, allowing the 25 mm extend stroke to be shortened to 15 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X25-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X25-10S replacement — usually within 7-8 hours.