This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32BX140S, 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 SI32BX140S
The AirTAC SI32 Standard Air Cylinder SI32BX140S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 140mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32BX140S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke140 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX140S
- 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 SI32BX140S
The AirTAC SI32BX140S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 140mm stroke, and SUS304 stainless steel rod. Delivering 402N push force at 0.5MPa via a G1/8 port, it is directly replaced by the SAI32BX140S direct.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32BX140S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX140S |
| Bore size | Ø32 mm |
| Stroke | 140 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 SAI32BX140S 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 SAI32BX140S 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 SI32BX140S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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 SI32BX140S Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture.
Corrosive Sortation
The SUS304 stainless rod handles damp environments while routing packages on a conveyer line.
Gate Diverting
Provides 140mm travel to actuate routing flaps, with the G1/8 port ensuring compact manifold mounting.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX140S with the SAI32BX140S
To replace the SI32BX140S, order the SAI32BX140S. It matches the ISO 15552 mounting interface, 32mm bore, 140mm stroke, G1/8 port, and SUS304 rod. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. If you need more force, the adjacent 40mm bore yields 628N push at 0.5MPa. For load holding on air loss, note the cushion only decelerates; use an external pilot check valve or the SAIL lock variant. At 140mm stroke, side-load is minimal, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX140S
- ✓ 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 SI32BX140S FAQ
Yes, the SI32BX140S is discontinued. The direct replacement is the SAI32BX140S, which shares the identical ISO 15552 mounting interface, 32mm bore, 140mm stroke, force, and G1/8 port.
It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical max of 82kgf at 1.0MPa. Operating speed is 30-800mm/s, with a 27mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX140S replacement — usually within 7-8 hours.