This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32BX140, 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 SI32BX140
The AirTAC SI32 Standard Air Cylinder SI32BX140 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 SAI32BX140, 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 → SAI32BX140
- 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 SI32BX140
The AirTAC SI32BX140 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 replaced by the SAI32BX140. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, output force, port size, and accessories.
The SAI upgrade features a revised piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Note this SKU lacks a magnet (-S) and cannot accept a CS1-B/DS1-B sensor. The SAI family also introduces SAIL, SAIF, and BSAI lock/valve variants absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32BX140 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX140 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX140 |
| 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 SAI32BX140 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 SAI32BX140 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 SI32BX140
| 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 SI32BX140 Is Used
Small Part Ejection
Ideal for pushing lightweight molded components out of a machining fixture using a compact 32mm bore and 140mm stroke.
Lab Test Actuators
The SUS304 stainless rod excels in humid or mildly corrosive laboratory environments, providing reliable linear motion for repetitive testing rigs.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX140 with the SAI32BX140
To replace the SI32BX140, order the SAI32BX140. Verify the ISO 15552 interface, 32mm bore, 140mm stroke, G1/8 port (PT/G/NPT thread options), and your mounting accessory (LB, FA, TC, etc.). Because this is a -B SUS304 rod model, confirm if the replacement requires the stainless rod for corrosion resistance versus the default carbon steel. This non-magnet SKU cannot host a sensor; if position detection is needed, select an SAI model with the -S suffix to use current AirTAC switches. For sizing alternatives, a 40mm bore offers 628N push at 0.5MPa, while dropping to a 25mm stroke reduces rod bending risk. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. At 140mm stroke, side-load guides are recommended.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX140
- ✓ 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 SI32BX140 FAQ
Yes, the AirTAC SI32BX140 is discontinued. The direct replacement is the SAI32BX140. It features the same ISO 15552 mounting interface, 32mm bore, 140mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
The 32mm bore features a G1/8 port and an M10x1.25 rod thread. At 0.5 MPa it provides 402N push and 345N pull force. At 0.7 MPa push is 563N, and 724N at 0.9 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX140
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX140 replacement — usually within 7-8 hours.