This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X450-20S, 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 SIJ32X450-20S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20S 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 SAIJ32X450-20S, 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 → SAIJ32X450-20S
- 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 SIJ32X450-20S
The AirTAC SIJ32X450-20S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. The direct replacement is the SAIJ32X450-20S, retaining the G1/8 port, 450 mm nominal stroke, and 20 mm on-site extend-trim window. This yields a usable extend range of 430-450 mm. The external stop screw sets the end position but is not a load lock.
The SAIJ successor features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches. For load holding without live air, use an external rod lock or SAIL/BSAI variant, as cushions only decelerate.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X450-20S |
| 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 SAIJ32X450-20S 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 SAIJ32X450-20S 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 SIJ32X450-20S
| 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 SIJ32X450-20S Is Used
Diverter Gate Positioning
Needs field stroke tuning to dial in the exact 430-450 mm gate open position on-site without machining spacers.
Package Stopper Arm
Requires adjustable end-position stopping to handle varying carton depths on the line using the 20 mm trim window.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-20S with the SAIJ32X450-20S
To replace the discontinued SIJ32X450-20S, order the direct replacement SAIJ32X450-20S, which preserves the ISO 15552 mounting interface, M10x1.25 rod thread, and 27 mm adjustable cushions. Choose the 20 mm adjust window to fine-tune the extend stroke by up to 20 mm on-site. Mounting options include FA, LB, and TC brackets. The -S magnet supports legacy CS1-B/DS1-B sensors. Because the 450 mm stroke exceeds 300 mm, account for side-load and rod-bending by using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X450-20S
- ✓ 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 SIJ32X450-20S FAQ
Yes, the SIJ32X450-20S is discontinued. The direct replacement is the SAIJ32X450-20S. It shares the same ISO 15552 interface, 32 mm bore, 450 mm stroke, 20 mm adjust window, G1/8 port, and mounting options, but adds an upgraded piston seal.
The external stop screw window is 20 mm, allowing the nominal 450 mm extend stroke to be shortened to 430 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X450-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X450-20S replacement — usually within 7-8 hours.