This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X450-20, 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 450mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X450-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X450-20
- 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20
The AirTAC SIJ32X450-20 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, officially discontinued and replaced by the SAIJ32X450-20. It features a 32mm bore, 12mm rod, M10x1.25 thread, G1/8 port, and 27mm cushions. The external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 430-450mm range. The SAIJ direct keeps the exact ISO 15552 interface, bore, and mounting.
The SAIJ upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Reusing your existing ISO 15552 mounting hardware avoids redesign. Note: the stop screw sets end position but is not a lock; loads drift on air loss. For held loads, use SAIL/BSAI or an external rod lock.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20 Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X450-20 |
| Bore size | Ø32 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ32X450-20 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAIJ32X450-20 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20 Is Used
Adjustable Stop Pressing
Dialing in exact extend endpoints on small pneumatic presses where a 20mm on-site trim avoids machining custom spacers.
Variable Length Diverter
Tuning a lane diverter arm stroke from 430 to 450mm to accommodate varying package widths on the fly.
Adjustable End Ejector
Ejecting parts from a fixture with a field-adjustable end position to handle slight variations in part geometry.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20 with the SAIJ32X450-20
To replace this discontinued SIJ32X450-20, order the direct replacement SAIJ32X450-20, keeping the 20mm adjust window (430-450mm usable extend). Choose FA, LB, or TC mountings to match your ISO 15552 interface. This SKU lacks the -S magnet and cannot take a magnetic switch; for sensing, select an SAIJ32X450-20-S. Because the 450mm stroke exceeds 300mm, ensure external guides to prevent rod bending and side-load damage. The stop screw only sets end position and does not lock; for load-holding without live air, use SAIL/BSAI or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X450-20
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20 FAQ
Yes, the SIJ32X450-20 is discontinued. The direct replacement is the SAIJ32X450-20. It shares the same ISO 15552 interface, 32mm bore, 450mm stroke, 20mm adjust window, G1/8 port, and mounting options, but adds an upgraded piston seal.
The external stop screw provides a 20mm adjustment window, allowing the extend stroke to be shortened from the 450mm maximum down to 430mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X450-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X450-20 replacement — usually within 7-8 hours.