This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X400-20, 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 SIJ32X400-20
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X400-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 400mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X400-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke400 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X400-20
- 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 SIJ32X400-20
The AirTAC SIJ32X400-20 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. A 20mm external stop screw lets you trim the extend stroke on-site from the 400mm maximum down to 380mm. As the SIJ line is end-of-life, the direct replacement is the SAIJ32X400-20, retaining the same interface, force, and adjustability.
The SAIJ successor incorporates an upgraded piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life. Note this non-magnetic SKU cannot accept a switch, and the stop screw sets end position rather than locking the load.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X400-20 Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X400-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X400-20 |
| Bore size | Ø32 mm |
| Stroke | 400 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 SAIJ32X400-20 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 SAIJ32X400-20 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 SIJ32X400-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SIJ32X400-20 Is Used
Assembly Pin Insertion
Dialing in the exact 380-400mm extend position on-site to press fit pins without bottoming out the tooling.
Carton Flap Folding
Adjusting the extend stop to accommodate varying box heights while maintaining a consistent fold line.
Diverting Gate Stroke
Tuning the actuator endpoint by up to 20mm to align products accurately onto diverging conveyor lanes.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X400-20 with the SAIJ32X400-20
To replace the discontinued SIJ32X400-20, order the direct replacement SAIJ32X400-20, which preserves the 32mm bore, 400mm nominal stroke, 20mm adjust window, G1/8 port, and ISO 15552 mounting. The 20mm adjust window is ideal for fine-tuning the extend endpoint within a 380-400mm range. Mounting attachments (FA, LB, TC) are reusable. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add sensing only if migrating to an -S model. At 400mm stroke, prevent rod bending by ensuring external guides carry side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X400-20
- ✓ 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 SIJ32X400-20 FAQ
Yes, the SIJ32X400-20 is discontinued. The direct replacement is the SAIJ32X400-20. It matches the 32mm bore, 400mm stroke, 20mm adjust window, G1/8 port, and ISO 15552 mounting interface, while adding an upgraded piston seal.
The external stop screw allows you to trim the extend stroke by up to 20mm on-site, yielding a usable 380-400mm range. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X400-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X400-20 replacement — usually within 7-8 hours.