This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X28, 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 SI32X28
The AirTAC SI32 Standard Air Cylinder SI32X28 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 28mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X28, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke28 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X28
- 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 SI32X28
The AirTAC SI32X28 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 28mm stroke, delivering 402N push force at 0.5MPa via a G1/8 port. AirTAC replaced this legacy unit with the SAI32X28, a direct replacement sharing the exact interface, bore, stroke, output force, port and mounting fixtures.
The SAI32X28 upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Because this specific SI32X28 SKU lacks a magnet (-S), it cannot accept a position sensor.
Airtac SI32 Standard Air Cylinder SI32X28 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X28 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X28 |
| Bore size | Ø32 mm |
| Stroke | 28 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 SAI32X28 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 SAI32X28 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 SI32X28
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×28 | 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 SI32X28 Is Used
Small Part Ejection
Ideal for pushing lightweight machined components out of a fixture using its 402N push force at 0.5 MPa.
Clamp Actuation
Provides reliable clamping pressure for holding thin materials or subassemblies in automated work cells.
Gate Diverting
Short 28mm stroke offers rapid, precise movement for routing small parts along a conveyor line.
Replacing the Airtac SI32 Standard Air Cylinder SI32X28 with the SAI32X28
To replace the SI32X28, order the SAI32X28 and confirm the ISO 15552 mounting interface, 32mm bore, 28mm stroke, G1/8 port (PT/G/NPT thread options) and mounting accessory. Since this SKU has no magnet, it cannot support legacy CS1-B/DS1-B switches; if sensing is needed, select an SAI32X28S. Sizing both ways: the adjacent 40mm bore yields 628N push at 0.5MPa, while dropping to a smaller bore reduces force. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant (bores 32-100) integrates a 4M valve if space is tight. With a short 28mm stroke, side-load and rod-bending risks are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X28
- ✓ 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 SI32X28 FAQ
Yes, the SI32X28 is discontinued. The direct replacement is the SAI32X28, which maintains the same ISO 15552 mounting interface, 32mm bore, 28mm stroke, force, G1/8 port and mounting accessories.
It uses a G1/8 port. Force outputs are: 402N push and 345N pull at 0.5 MPa, 563N push at 0.7 MPa, 724N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa.
Request a Quote for the SAI32X28
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X28 replacement — usually within 7-8 hours.