This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X250-40, 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 SIJ32X250-40
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X250-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X250-40
- 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 SIJ32X250-40
The AirTAC SIJ32X250-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40mm on-site, giving a usable 210-250mm range.
The direct replacement is the SAIJ32X250-40, matching the interface, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for lower start-up pressure. Note this non-magnet SKU cannot take a switch, and the stop sets position only—it is not a load lock.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40 Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X250-40 |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAIJ32X250-40 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 SAIJ32X250-40 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 SIJ32X250-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SIJ32X250-40 Is Used
Diverter Gate Positioning
Trimming the extend stroke by up to 40mm on-site allows precise alignment of diverter gates without machining custom spacers.
Variable Depth Sealing Heads
Adjust the extend endpoint within the 210-250mm window to accommodate different package depths on a shared line.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40 with the SAIJ32X250-40
Replace the discontinued SIJ32X250-40 directly with the SAIJ32X250-40. The external stop screw provides a 40mm on-site trim (usable extend 210-250mm) but is not a lock. Reuse FA, LB, or TC ISO 15552 mounts. As this SKU lacks the -S magnet, it cannot accept a sensor. For stroke lengths of 300mm or more, verify side-load limits. For load holding without live air, use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X250-40
- ✓ 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 SIJ32X250-40 FAQ
Yes, the SIJ32X250-40 is discontinued. The direct replacement is the SAIJ32X250-40, which matches the ISO 15552 interface, bore, stroke, and G1/8 port. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
The external stop screw window is 40mm, allowing an on-site extend stroke adjustment from 210 to 250mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X250-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X250-40 replacement — usually within 7-8 hours.