This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX65S, 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 SI32BX65S
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX65S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 65mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX65S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke65 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX65S
- 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 SI32BX65S
The AirTAC SI32BX65S is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore, 65mm stroke, and a SUS304 stainless steel rod. Delivering 402N push at 0.5MPa via a G1/8 port, it is replaced by the SAI32BX65S. This drop-in successor matches the exact ISO 15552 mounting interface, bore, stroke, force, and port.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI lock variants the SI lacked. With the -S magnet, this unit supports legacy CS1-B/DS1-B sensors. For sizing, a safe working load is ~241N (60% of push), allowing a ~20kg vertical lift with a 2:1 margin.
Airtac SI32 Standard Air Cylinder SI32BX65S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX65S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX65S |
| Bore size | Ø32 mm |
| Stroke | 65 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 SAI32BX65S 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 SAI32BX65S produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX65S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×65 | 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 SI32BX65S Is Used
Compact Part Ejection
Uses the 241N safe working load to push small machined components out of a fixture reliably without damaging surfaces.
Lab Positioning
The SUS304 stainless rod provides corrosion resistance for shifting light sample trays in damp or chemically exposed environments.
Light Clamping
Applies 402N of push force at 0.5MPa to hold delicate housings steady during automated assembly processes.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX65S with the SAI32BX65S
To replace the SI32BX65S, order the SAI32BX65S. Confirm the ISO 15552 mounting interface, 32mm bore, 65mm stroke, G1/8 port, and your specific mounting accessory. The -B code specifies the SUS304 stainless rod, and -S indicates the magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). If you need more force, the neighbouring 40mm bore yields 628N push at 0.5MPa. For load holding, note a plain cylinder drifts on air loss as the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX65S
- ✓ 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 SI32BX65S FAQ
Yes, the SI32BX65S is discontinued. The exact drop-in replacement is the SAI32BX65S. It shares the same ISO 15552 mounting interface, 32mm bore, 65mm stroke, force, and G1/8 port, fitting existing fixtures perfectly.
This 32mm bore cylinder has a G1/8 port. It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX65S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX65S replacement — usually within 7-8 hours.