This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X40-20S, 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 SIJ32X40-20S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 40mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X40-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X40-20S
- 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 SIJ32X40-20S
The AirTAC SIJ32X40-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 32mm bore and 40mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 20-40mm extension. The direct replacement is the SAIJ32X40-20S, retaining the same interface, force, and mounting.
The SAIJ upgrade features an upgraded 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 SAIL/BSAI or an external rod lock.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X40-20S |
| Bore size | Ø32 mm |
| Stroke | 40 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 SAIJ32X40-20S 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 SAIJ32X40-20S 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 SIJ32X40-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SIJ32X40-20S Is Used
Short-Stroke Clamping
Adjusts clamping reach precisely on-site to accommodate varying workpiece thicknesses without repositioning the entire fixture.
Sensor Probe Positioning
Dials in the exact extension distance for delicate testing probes, preventing overtravel damage on small components.
Variable Pusher Stops
Tunes the ejection stroke on packaging lines to handle different carton depths using the 20mm trim window.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20S with the SAIJ32X40-20S
To replace the SIJ32X40-20S, map directly to the SAIJ32X40-20S. Choose the 20mm adjust window if you need to tune the extend stroke between 20-40mm on-site. Mounting options include FA, LB, and TC. The -S suffix provides a piston magnet for CS1-B/DS1-B switches (SAIJ uses current switches). For stroke lengths >=300mm, verify side-load guide tolerance.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X40-20S
- ✓ 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 SIJ32X40-20S FAQ
Yes, the SIJ32X40-20S is discontinued. The direct replacement is the SAIJ32X40-20S, which shares the identical ISO 15552 interface, 32mm bore, 40mm stroke, 20mm adjust window, G1/8 port, and mounting.
The external stop screw allows trimming the extend stroke by up to 20mm on-site (usable 20-40mm). The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X40-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X40-20S replacement — usually within 7-8 hours.