This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X150-100S, 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 SIJ125X150-100S
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X150-100S 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 SAIJ125X150-100S, 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 → SAIJ125X150-100S
- 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 SIJ125X150-100S
The AirTAC SIJ125X150-100S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. A 150mm nominal extend stroke is shortened on-site by an external stop screw, offering a 50-150mm usable window. The direct replacement is SAIJ125X150-100S, matching the interface, force, and adjustability.
The SAIJ upgrade features an improved two Y-shaped one-way piston seal for low start-up pressure and long life. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. The stop screw sets end position but is not a lock; use an external rod lock for load holding.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X150-100S Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X150-100S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X150-100S |
| 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 SAIJ125X150-100S 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 SAIJ125X150-100S 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 SIJ125X150-100S
| 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 SIJ125X150-100S Is Used
Press Fit Tuning
Adjusts the extend stroke on-site for pressing bearings, allowing precise 50-150mm depth control without changing the cylinder body.
Variable Diverter Arms
Sets diverter arm reach on a conveyor to handle different package sizes, using the 100mm stop screw window to alter the endpoint.
Adjustable Stops
Positions pallet stops in a warehouse where incoming pallet heights vary, trimming the extend stroke to match required clearances.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X150-100S with the SAIJ125X150-100S
Replace the SIJ125X150-100S directly with SAIJ125X150-100S, keeping the 125mm bore, 150mm stroke, 100mm adjust window, and G1/2 port. Mounting options (Basic, FA, LB, TC) reuse existing ISO 15552 interface dimensions. The 100mm adjust window allows precise extend tuning from 50 to 150mm. The -S magnet supports legacy CS1-B/DS1-B sensors. For stroke lengths over 300mm, verify side-load capacity to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X150-100S
- ✓ 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 SIJ125X150-100S FAQ
Yes, the SIJ125X150-100S is discontinued. The direct replacement is the SAIJ125X150-100S. It shares the same ISO 15552 interface, 125mm bore, 150mm stroke, 100mm adjust window, and G1/2 port. The SAIJ family also adds upgraded piston seals and SAIL/BSAI lock variants the SI line lacked.
The external stop screw provides a 100mm adjust window, shortening the 150mm nominal extend stroke down to 50mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X150-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X150-100S replacement — usually within 7-8 hours.