This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X40CB, 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 SI32X40CB
The AirTAC SI32 Standard Air Cylinder SI32X40CB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 40mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X40CB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X40CB
- 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 SI32X40CB
The AirTAC SI32X40CB is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 40mm stroke and CB clevis mount. It delivers 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced this unit with the SAI32X40CB, a direct sharing the exact interface, bore, stroke, force and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SI SKU lacks a magnet, it cannot accept a CS1-B/DS1-B sensor. For load holding, note that the cushion only decelerates; explore the SAIL lock variant if needed.
Airtac SI32 Standard Air Cylinder SI32X40CB Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X40CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X40CB |
| Bore size | Ø32 mm |
| Stroke | 40 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 SAI32X40CB 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 SAI32X40CB 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 SI32X40CB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SI32X40CB Is Used
Small Part Clamping
Ideal for securing light electronics or plastic housings during machining, using the 402N push force to hold components firmly without deformation.
Package Diverting
Provides reliable actuation for short-stroke routing gates on packaging lines, where the 40mm stroke and CB clevis mount handle quick diverting tasks.
Compact Ejection
Suited for pushing small finished parts out of molds or fixtures, leveraging the 32mm bore footprint and adjustable 27mm air cushions for smooth ejection.
Replacing the Airtac SI32 Standard Air Cylinder SI32X40CB with the SAI32X40CB
To replace the SI32X40CB, order the SAI32X40CB. Confirm the ISO 15552 CB clevis mount, 32mm bore, 40mm stroke, G1/8 port and M10x1.25 rod thread. This SKU has no magnet, so it cannot support a sensor; order a -S variant if position detection is required. For sizing, a 40mm bore offers 628N push at 0.5MPa, while this 32mm bore provides 402N. The cushion only decelerates; for held loads use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X40CB
- ✓ 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 SI32X40CB FAQ
Yes, the SI32X40CB is discontinued. The direct replacement is the SAI32X40CB. It is a dimensionally interchangeable ISO 15552 cylinder with the same 32mm bore, 40mm stroke, CB mount and G1/8 port, featuring an upgraded piston seal.
The G1/8 port is fixed by the 32mm bore. At 0.5MPa it provides 402N push and 345N pull force. At 0.7MPa push is 563N, and at 0.9MPa it is 724N. The theoretical maximum force is 82kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X40CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X40CB replacement — usually within 7-8 hours.