This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X900-10, 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 SIJ125X900-10
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X900-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 900mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X900-10, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X900-10
- 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 SIJ125X900-10
The AirTAC SIJ125X900-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 900 mm nominal stroke and a G1/2 port. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable extend range of 890-900 mm. This stop sets the end position; it is not a load lock.
The direct replacement is the SAIJ125X900-10, matching the ISO 15552 interface, bore, force, adjust window, and mounting. The SAIJ family uses an upgraded two-piece Y-shaped piston seal for low start-up pressure and long life. This non-magnetic SKU cannot take a switch.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X900-10 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X900-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X900-10 |
| Bore size | Ø125 mm |
| Stroke | 900 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 SAIJ125X900-10 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 SAIJ125X900-10 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 SIJ125X900-10
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×900 | 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 SIJ125X900-10 Is Used
Press Fit Tuning
Final insertion depth requires exact 890-900 mm field stroke tuning to seat bearings without bottoming out the tooling.
Pallet Stop Adjustment
Trimming the extend stroke by up to 10 mm accommodates varying pallet thicknesses at a transfer station.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X900-10 with the SAIJ125X900-10
Replace the SIJ125X900-10 directly with the SAIJ125X900-10, retaining your FA, LB, or TC mounts. Choose the 10 mm adjust window when you need minor 890-900 mm extend trimming. Because this SKU lacks the -S magnet, it cannot accept a sensor. For the 900 mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X900-10
- ✓ 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 SIJ125X900-10 FAQ
Yes, the SIJ125X900-10 is discontinued. The direct replacement is the SAIJ125X900-10, offering the same ISO 15552 interface, 900 mm stroke, 10 mm adjust window, G1/2 port, and mounting compatibility.
The external stop screw provides a 10 mm adjust window, allowing an extend stroke of 890-900 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X900-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X900-10 replacement — usually within 7-8 hours.