This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X40H, 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 SI32X40H
The AirTAC SI32 Standard Air Cylinder SI32X40H 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 SAI32X40H, 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 → SAI32X40H
- 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 SI32X40H
The AirTAC SI32X40H is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 40 mm stroke. Built for high-temperature duty with a Viton H seal (0 to 150 C), it delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X40H, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories.
The SAI upgrade features a modernized piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Because this specific SKU lacks the -S magnet, it cannot accept a position sensor; legacy SI sensors were CS1-B/DS1-B. The SAI family also introduces SAIL, SAIF and BSAI lock/valve variants absent in the original SI line.
Airtac SI32 Standard Air Cylinder SI32X40H Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X40H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X40H |
| 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 SAI32X40H 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 SAI32X40H 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 SI32X40H
| 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 SI32X40H Is Used
Hot-End Part Ejection
Ideal for ejecting small molded components near heated zones, utilizing the Viton H seal to withstand ambient temperatures up to 150 C while providing 402 N of push force.
Compact Diverting Gates
Fits into tight machinery profiles to actuate lightweight routing flaps or diverters, offering a short 40 mm stroke and robust ISO 15552 mounting stability.
Replacing the Airtac SI32 Standard Air Cylinder SI32X40H with the SAI32X40H
To replace the discontinued SI32X40H, order the SAI32X40H. Confirm the ISO 15552 mounting interface matches your fixture, along with the 32 mm bore, 40 mm stroke, G1/8 port (PT/G/NPT thread options) and Viton H high-temperature seal. If you need position sensing, select an SAI model with the -S magnet option, as this no-S SKU cannot take a switch. For higher force needs, neighboring bores like the 40 mm offer 628 N push at 0.5 MPa. Note that a plain cylinder does not hold load without live air; for load holding on pressure loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. With a 40 mm stroke, side-load and rod-bending stresses are minimal, but always guide the load to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X40H
- ✓ 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 SI32X40H FAQ
Yes, the SI32X40H is discontinued. The direct replacement is the AirTAC SAI32X40H. It shares the identical ISO 15552 mounting interface, 32 mm bore, 40 mm stroke, force, G1/8 port and Viton H seal, fitting directly into existing fixtures.
This 32 mm bore cylinder features a G1/8 air port and M10x1.25 rod thread. It delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical maximum force of 82 kgf at 1.0 MPa. It operates at speeds of 30-800 mm/s.
Request a Quote for the SAI32X40H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X40H replacement — usually within 7-8 hours.