This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ32X500-20S, 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 SIJ32X500-20S
The AirTAC SIJ32 Double Rod Adjustable Cylinder SIJ32X500-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 500mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ32X500-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke500 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAIJ32X500-20S
- 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 SIJ32X500-20S
The AirTAC SIJ32X500-20S is a double-acting, double-rod ISO 15552 adjustable-stroke cylinder. This discontinued unit uses an external stop screw to trim the extend stroke by up to 20 mm on-site, yielding a usable 480-500 mm stroke from the 500 mm nominal maximum. The direct replacement is the SAIJ32X500-20S, preserving the ISO 15552 mounting interface, bore, force, and adjust window.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The external stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X500-20S Technical Specifications
| Model | Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X500-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ32X500-20S |
| Bore size | Ø32 mm |
| Stroke | 500 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 SAIJ32X500-20S 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 SAIJ32X500-20S 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 SIJ32X500-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×500 | 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 SIJ32X500-20S Is Used
Diverter Gate Positioning
Trimming the extend stroke by up to 20 mm on-site allows precise alignment of diverter gates without machining custom spacers.
Variable Depth Sealing
Adjusts the end position for packaging flaps of varying thicknesses, ensuring consistent sealing pressure across batches.
Transfer Stopper Tuning
Fine-tunes the stopper block location on a conveyor by up to 20 mm to accommodate different product widths on the fly.
Replacing the Airtac SIJ32 Double Rod Adjustable Cylinder SIJ32X500-20S with the SAIJ32X500-20S
To replace the discontinued SIJ32X500-20S, order the exact direct replacement SAIJ32X500-20S to retain the 32 mm bore, 500 mm stroke, 20 mm adjust window, and G1/8 port. If resizing, neighboring bores offer different 0.5 MPa thrusts: the 40 mm bore pushes 628 N, while a smaller option must be evaluated against your minimum force. Choose the 20 mm adjust window if your application requires fine-tuning the extend position within a 480-500 mm range. Reuse existing FA, LB, or TC ISO 15552 mounts. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. Because the 500 mm stroke exceeds 300 mm, account for side-load and rod-bending by using external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ32X500-20S
- ✓ 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 SIJ32X500-20S FAQ
Yes, the SIJ32X500-20S is discontinued. The direct replacement is the SAIJ32X500-20S. It shares the same ISO 15552 interface, 32 mm bore, 500 mm stroke, 20 mm adjust window, and G1/8 port, but features an upgraded piston seal.
The external stop screw window is 20 mm, allowing the extend stroke to be shortened from 500 mm down to 480 mm. The stop sets position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ32X500-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ32X500-20S replacement — usually within 7-8 hours.