This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X30-10S, 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 SIJ125X30-10S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X30-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 30mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X30-10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X30-10S
- 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 SIJ125X30-10S
The AirTAC SIJ125X30-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 10 mm on-site, giving a usable 20-30 mm stroke from the 30 mm nominal maximum. The direct replacement is the SAIJ125X30-10S, matching the interface, force, and adjust window.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; for held loads use an external rod lock or the SAIL/BSAI variants. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X30-10S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X30-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X30-10S |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAIJ125X30-10S 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 SAIJ125X30-10S 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 SIJ125X30-10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SIJ125X30-10S Is Used
Short-Stroke Pressing
Trimming the 30 mm extend down to 20 mm on-site to dial in the exact contact pressure for a light-duty pressing or staking operation without machining spacers.
Variable Depth Sealing
Adjusting the extend stop in 10 mm increments to accommodate carton or package flap heights, ensuring consistent sealing pressure across varied product sizes.
Transfer Stop Positioning
Fine-tuning the extended stop finger position on a conveyor line to handle different product widths, using the external screw to set the exact 20-30 mm end point.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X30-10S with the SAIJ125X30-10S
To replace the discontinued SIJ125X30-10S, order the SAIJ125X30-10S direct (insert A after the leading S). It preserves the 125 mm bore, 30 mm nominal stroke, 10 mm adjust window, and G1/2 port. Choose the 10 mm adjust window when you need precise 20-30 mm extend tuning. Mounting interfaces (FA, LB, TC) reuse existing ISO 15552 fixtures. The -S magnet enables position sensing. Because the stroke is under 300 mm, side-load rod deflection is minimal. The stop screw only sets end position and does not hold load on air loss; for load holding select SAIL, BSAI, or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X30-10S
- ✓ 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 SIJ125X30-10S FAQ
Yes, the SIJ125X30-10S is discontinued. The direct replacement is the SAIJ125X30-10S. It shares the identical ISO 15552 interface, 125 mm bore, 30 mm stroke, 10 mm adjust window, and G1/2 port. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 10 mm adjust window, allowing you to shorten the 30 mm nominal extend stroke down to 20 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X30-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X30-10S replacement — usually within 7-8 hours.