This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X500LB, 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 SI32 Standard Air Cylinder SI32X500LB
The AirTAC SI32 Standard Air Cylinder SI32X500LB 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 SAI32X500LB, 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 → SAI32X500LB
- 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 SI32 Standard Air Cylinder SI32X500LB
The AirTAC SI32X500LB is a discontinued double-acting ISO 15552 profile cylinder with an LB foot mount. Built for a 32 mm bore, it delivers 402 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI32X500LB direct replacement, matching the exact bore, stroke, G1/8 port, and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. For sensing, note this specific SKU lacks a magnet (-S) and cannot accept CS1-B/DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32X500LB Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X500LB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X500LB |
| 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 SAI32X500LB 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 SAI32X500LB produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32X500LB
| 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 SI32 Standard Air Cylinder SI32X500LB Is Used
Parts Ejection
Ejects small molded components from fixture plates, where the 32 mm bore and 500 mm extension clear the press bed safely.
Replacing the Airtac SI32 Standard Air Cylinder SI32X500LB with the SAI32X500LB
To replace the SI32X500LB, order the SAI32X500LB. Verify your ISO 15552 LB foot mount, 500 mm stroke, and G1/8 port. Because this SKU has no -S magnet, it cannot support position sensing; if needed, order an SAI with S. For sizing, the 32 mm bore yields 402 N push at 0.5 MPa; dropping to a 25 mm bore reduces force, while a 40 mm bore increases it. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify an SAIL lock variant. Finally, at 500 mm stroke, prevent rod bending by using an external guide to absorb side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X500LB
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI32 Standard Air Cylinder SI32X500LB FAQ
Yes, the SI32X500LB is discontinued. The direct replacement is the AirTAC SAI32X500LB. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 500 mm stroke, LB foot mount, and G1/8 port.
The 32 mm bore features a G1/8 port, a 12 mm rod, and M10x1.25 thread. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a maximum theoretical force of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X500LB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X500LB replacement — usually within 7-8 hours.