This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X40-20, 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 SIJ32X40-20
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20 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 SAIJ32X40-20, 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 → SAIJ32X40-20
- 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 SIJ32X40-20
The AirTAC SIJ32X40-20 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. It features a 32mm bore, a 40mm nominal extend stroke, and a G1/8 port. An external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 20-40mm stroke. The direct replacement is the SAIJ32X40-20, matching the interface, bore, stroke, and force.
The SAIJ upgrade utilizes an improved two-piece Y-shaped piston seal for lower start-up pressure and longer life. This non-magnetic SKU cannot accept a switch.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20 Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X40-20 |
| 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 SAIJ32X40-20 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 SAIJ32X40-20 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 SIJ32X40-20
| 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 SIJ32X40-20 Is Used
Light Clamping Fixtures
Provides adjustable 20-40mm clamping travel for small parts, allowing operators to tune the extend stop precisely to workpiece height variations.
Diverting Pusher Arms
Acts as a short-stroke diverter on a conveyor line where the exact push distance must be dialed in on-site to align with varying package widths.
Compact Ejector Mechanisms
Fits into tight machinery spaces to eject completed components, using the external stop to regulate the ejection force and distance safely.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X40-20 with the SAIJ32X40-20
To replace the discontinued SIJ32X40-20, order the direct replacement SAIJ32X40-20, reusing your existing ISO 15552 FA, LB, or TC mounts. Choose the 20mm adjust window if your end-stop requires field tuning between 20mm and 40mm; for fixed stops, a standard SAI is simpler. This base SKU lacks a magnet (-S) and cannot support legacy CS1-B/DS1-B sensors. Note that the external stop screw only sets the end position; it is not a lock, and air loss will cause drift. For load-holding, specify SAIL or BSAI.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X40-20
- ✓ 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 SIJ32X40-20 FAQ
Yes, the SIJ32X40-20 is discontinued. The direct replacement is the SAIJ32X40-20. It shares the same ISO 15552 interface, 32mm bore, 40mm stroke, 20mm adjust window, and G1/8 port, but features an upgraded two-piece Y-shaped piston seal for longer life.
The theoretical max is 82kgf at 1.0MPa. The nominal 40mm extend stroke can be shortened by up to 20mm on-site via the external stop screw, giving a usable 20-40mm range. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X40-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X40-20 replacement — usually within 7-8 hours.