This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X55H, 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 SI32X55H
The AirTAC SI32 Standard Air Cylinder SI32X55H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 55mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X55H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke55 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X55H
- 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 SI32X55H
The AirTAC SI32X55H is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 55 mm stroke. Featuring a high-temperature Viton H seal (0-150 C) and a G1/8 port, it delivers 402 N push force at 0.5 MPa. Because this SKU lacks a magnet, it cannot accept a position sensor. AirTAC replaced this legacy unit with the SAI32X55H, a direct sharing the exact ISO 15552 mounting interface, bore, and output force.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock or valve variants absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32X55H Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X55H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X55H |
| Bore size | Ø32 mm |
| Stroke | 55 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 SAI32X55H 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 SAI32X55H 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 SI32X55H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 SI32X55H Is Used
High-Temp Ejection
Ideal for pushing small parts out of heated molds using the Viton H seal rated for 0-150 C environments.
Compact Sorting
Provides 402 N of push force at 0.5 MPa for routing lightweight components on a tight 55 mm stroke.
Replacing the Airtac SI32 Standard Air Cylinder SI32X55H with the SAI32X55H
To replace the SI32X55H, order the SAI32X55H. Verify your ISO 15552 mounting fixtures, G1/8 port, and M10x1.25 rod thread. Since this is a no-magnet SKU, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, switch to an SAI equivalent with an S suffix. For higher force, the neighbouring 40 mm bore yields 628 N push at 0.5 MPa. Note that a plain cylinder drifts without live air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X55H
- ✓ 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 SI32X55H FAQ
Yes, the SI32X55H is discontinued. The direct replacement is the SAI32X55H. It shares the same ISO 15552 mounting interface, 32 mm bore, 55 mm stroke, G1/8 port, and force ratings, fitting directly into your existing fixtures.
It features a G1/8 port and provides 402 N push / 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa. The speed range is 30-800 mm/s.
Request a Quote for the SAI32X55H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X55H replacement — usually within 7-8 hours.