This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X250-40S, 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 SIJ32X250-40S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40S 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 SAIJ32X250-40S, 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 → SAIJ32X250-40S
- 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 SIJ32X250-40S
The AirTAC SIJ32X250-40S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 32 mm bore and 250 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable window of 210-250 mm. The SIJ series is discontinued; the direct replacement is the SAIJ32X250-40S, sharing the same interface, force, and mounting.
The SAIJ upgrade utilizes an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, and loads will drift without live air.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X250-40S |
| 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 SAIJ32X250-40S 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 SAIJ32X250-40S 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 SIJ32X250-40S
| 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 SIJ32X250-40S Is Used
Variable Depth Drilling
Adjustable extend stop allows operators to tune the 210-250 mm stroke window precisely for different material thicknesses without re-plumbing the pneumatic lines.
Variable Height Sealing
On-site stroke trimming accommodates varying package profiles on the fly, ensuring consistent sealing pressure across mixed product runs.
Adjustable Diverter Stops
External stop screw fine-tunes the extend end position to route different carton sizes accurately without requiring multiple dedicated cylinders.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X250-40S with the SAIJ32X250-40S
To replace the discontinued SIJ32X250-40S, order the direct replacement SAIJ32X250-40S, retaining the 250 mm nominal stroke and 40 mm adjust window (210-250 mm usable extend). Mounting attachments (Basic, FA, LB, TC) reuse the ISO 15552 interface. The -S suffix confirms the piston magnet is present for legacy CS1-B/DS1-B switches. For strokes of 300 mm or longer, carefully manage side loading to prevent rod wear. Because the external stop is not a lock, use an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X250-40S
- ✓ 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 SIJ32X250-40S FAQ
Yes, the AirTAC SIJ32X250-40S is discontinued. The direct replacement is the SAIJ32X250-40S. It shares the same ISO 15552 interface, 32 mm bore, 250 mm stroke, 40 mm adjust window, G1/8 port, and mounting options, but features an upgraded piston seal.
The external stop screw provides a 40 mm adjustment window, allowing the extend stroke to be shortened from the 250 mm maximum down to 210 mm on-site. The G1/8 port and 27 mm cushions are fixed by the bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X250-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X250-40S replacement — usually within 7-8 hours.