This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX250, 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 SI32AX250
The AirTAC SI32 Standard Air Cylinder SI32AX250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32AX250
- 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 SI32AX250
The AirTAC SI32AX250 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 250mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is the SAI32AX250, which shares the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This specific SKU uses a SUS420J2 stainless steel rod (-A) and lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. Note that a plain cylinder drifts without live air; for load holding, consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI32 Standard Air Cylinder SI32AX250 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32AX250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX250 |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAI32AX250 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 SAI32AX250 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 SI32AX250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SI32AX250 Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture.
Package Diverting
Actuates a routing gate on a 30-800mm/s conveyor line, taking advantage of the 250mm stroke.
Corrosive-Safe Sorting
The SUS420J2 stainless rod option handles humid or mildly corrosive environments in logistics hubs.
Replacing the Airtac SI32 Standard Air Cylinder SI32AX250 with the SAI32AX250
To replace the SI32AX250, order the SAI32AX250. Confirm the ISO 15552 mounting interface, the 32mm bore, 250mm stroke, G1/8 port (PT/G/NPT thread options), and your mounting accessory. Because this is a no-S SKU, it cannot support magnetic sensing; if position feedback is needed, select an SAI model with the -S magnet option. For sizing down, a 32mm bore yields 402N push at 0.5MPa; if you need less force, consider the 20mm bore, but if you need more, step up to the 40mm bore (628N push). Since this is a 250mm stroke, ensure adequate guide support to prevent rod bending and side-load damage. A plain cylinder does not hold load without live air; use an external rod lock or pilot check valve for safety, or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32AX250
- ✓ 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 SI32AX250 FAQ
Yes, the SI32AX250 is discontinued. The direct replacement is the SAI32AX250. It is dimensionally interchangeable per ISO 15552, keeping the same 32mm bore, 250mm stroke, force, and G1/8 port, so it fits existing fixtures directly.
It features a G1/8 port and provides 402N push / 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa. It operates at 30-800mm/s with a 27mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32AX250
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX250 replacement — usually within 7-8 hours.