This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X150-10S, 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 SIJ125X150-10S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X150-10S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X150-10S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X150-10S
- 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 SIJ125X150-10S
The AirTAC SIJ125X150-10S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm bore and 150 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 140-150 mm end position. The built-in -S piston magnet supports legacy CS1-B/DS1-B switches.
Because the SIJ line is end-of-life, the direct replacement is the SAIJ125X150-10S—retaining the same ISO 15552 mounting interface, force, and adjust window. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Remember the stop screw sets the end position but is not a load lock; use SAIL or BSAI variants for held loads.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X150-10S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X150-10S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X150-10S |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAIJ125X150-10S 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 SAIJ125X150-10S 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 SIJ125X150-10S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SIJ125X150-10S Is Used
Press Fit Calibration
Fine-tune the 140-150 mm extend endpoint on-site to perfect bearing seating force without re-machining fixed stop blocks.
Pallet Diverter Setup
Trim the extend stroke by up to 10 mm during commissioning to align a diverter arm precisely with varying pallet widths.
Heavy Stacking Height Trim
Adjust the extend end-position in the field to accommodate slight variances in heavy 313 kg load stacking heights.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X150-10S with the SAIJ125X150-10S
To replace the discontinued SIJ125X150-10S, order the direct replacement SAIJ125X150-10S, which matches the 125 mm bore, 150 mm nominal stroke, 10 mm adjust window, G1/2 port, and ISO 15552 mounting. Choose the 10 mm adjust window if you need minor 140-150 mm extend tuning. Reuse basic, FA, LB, or TC mounts directly. The -S suffix ensures a piston magnet for CS1-B/DS1-B switches. Although this 150 mm stroke is under 300 mm, always verify side-load limits on longer strokes. The stop screw is an end-position setter, not a lock—never rely on it or the air cushion to hold loads on air loss; use an external rod lock or check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X150-10S
- ✓ 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 SIJ125X150-10S FAQ
Yes, the SIJ125X150-10S is discontinued. The direct replacement is the SAIJ125X150-10S. It shares the identical ISO 15552 interface, 125 mm bore, 150 mm stroke, 10 mm adjust window, G1/2 port, and mounting options, while upgrading the piston seal to two Y-shaped one-way elements.
The external stop screw provides a 10 mm adjust window, allowing you to trim the extend stroke from the 150 mm maximum down to 140 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X150-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X150-10S replacement — usually within 7-8 hours.