This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X250-20S, 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 SIJ32X250-20S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X250-20S 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 SAIJ32X250-20S, 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 → SAIJ32X250-20S
- 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 SIJ32X250-20S
The AirTAC SIJ32X250-20S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable 230-250 mm range. The SIJ32X250-20S is discontinued; the direct replacement is the SAIJ32X250-20S, retaining the same interface, force, and adjust window.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a load lock; for held loads use an external rod lock or SAIL/BSAI variant. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-20S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X250-20S |
| 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 SAIJ32X250-20S 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 SAIJ32X250-20S 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 SIJ32X250-20S
| 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 SIJ32X250-20S Is Used
Diverter Gate Positioning
Trimming the extend stroke by up to 20 mm on-site allows precise alignment of diverter gates without machining spacers.
Variable Carton Sealing
Adjustable end-position tuning accommodates minor carton height variations, ensuring consistent sealing head contact.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-20S with the SAIJ32X250-20S
To replace the discontinued SIJ32X250-20S, order the direct replacement SAIJ32X250-20S, which matches the 32 mm bore, 250 mm max stroke, 20 mm adjust window, G1/8 port, and FA/LB/TC mountings. Choose the 20 mm adjust window if you need precise 230-250 mm extend tuning. The -S magnet enables position sensing. For this 250 mm stroke (under 300 mm), side-load concerns are minimal. Remember the stop screw sets end position and is not a lock; cylinders drift on air loss, so specify a SAIL/BSAI lock or external rod lock for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X250-20S
- ✓ 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 SIJ32X250-20S FAQ
Yes, the SIJ32X250-20S is discontinued. The direct replacement is the SAIJ32X250-20S, which shares the same ISO 15552 interface, 250 mm stroke, 20 mm adjust window, and G1/8 port. The SAIJ also adds an upgraded two Y-shaped one-way piston seal.
The external stop screw window is 20 mm, allowing the extend stroke to be shortened from 250 mm down to 230 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X250-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X250-20S replacement — usually within 7-8 hours.