This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X450-75S, 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 SIJ32X450-75S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X450-75S 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 SAIJ32X450-75S, 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 → SAIJ32X450-75S
- 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 SIJ32X450-75S
The AirTAC SIJ32X450-75S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. Its external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 375-450 mm window from the 450 mm nominal maximum. The direct replacement is the SAIJ32X450-75S, matching the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting footprint while upgrading the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches. Note that the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-75S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X450-75S |
| 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 SAIJ32X450-75S 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 SAIJ32X450-75S 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 SIJ32X450-75S
| 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 SIJ32X450-75S Is Used
Variable Pitch Indexing
Parts feeding operations needing field stroke tuning to alter the extend position by up to 75 mm for different product lengths without changing the cylinder.
Adjustable Transfer Pusher
Diverting or pushing packages on a conveyor where the end stop position must be dialed in precisely on-site to handle varying box dimensions.
Prototype Stroke Setup
R&D and assembly test rigs where the extend stroke requires iterative trimming during commissioning to find the exact 375-450 mm endpoint.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X450-75S with the SAIJ32X450-75S
To replace the discontinued SIJ32X450-75S, specify SAIJ32X450-75S directly—it is a direct match for the 32 mm bore, 450 mm stroke, 75 mm adjust window, G1/8 port, and ISO 15552 mounting. Choose the 75 mm adjust window if you need on-site extend tuning between 375 and 450 mm. Reuse FA, LB, or TC mounts. The -S suffix ensures a piston magnet for legacy CS1-B/DS1-B sensors. Because the 450 mm stroke is long, account for side-load and rod-bending forces by using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X450-75S
- ✓ 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 SIJ32X450-75S FAQ
Yes, the AirTAC SIJ32X450-75S is discontinued. The direct replacement is the SAIJ32X450-75S. It shares the same ISO 15552 interface, 32 mm bore, 450 mm stroke, 75 mm adjust window, G1/8 port, and mounting options, but features an upgraded piston seal for longer life.
The external stop screw provides a 75 mm adjust window, allowing you to shorten the extend stroke from the 450 mm nominal maximum down to 375 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X450-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X450-75S replacement — usually within 7-8 hours.