This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X85S, 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 SI32X85S
The AirTAC SI32 Standard Air Cylinder SI32X85S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 85mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X85S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke85 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X85S
- 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 SI32X85S
The AirTAC SI32X85S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore, 85 mm stroke, and a G1/8 port. It delivers 402 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI32X85S, a direct replacement retaining the exact interface, bore, stroke, output force, and mounting.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X85S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X85S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X85S |
| Bore size | Ø32 mm |
| Stroke | 85 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 SAI32X85S 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 SAI32X85S 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 SI32X85S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×85 | 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 SI32X85S Is Used
Small Part Ejection
Uses the 402 N push force at 0.5 MPa to reliably knock lightweight machined components out of a fixture.
Package Diverting
The 85 mm stroke actuates a short diverter arm to route small boxes on a packaging line at up to 800 mm/s.
Clamp Actuation
Provides precise 32 mm bore clamping pressure for holding thin sheet metal or plastic parts during light assembly.
Replacing the Airtac SI32 Standard Air Cylinder SI32X85S with the SAI32X85S
To replace the SI32X85S, order the SAI32X85S and verify your ISO 15552 mounting interface, G1/8 port thread (PT/G/NPT), and 85 mm stroke. The built-in magnet (-S) works with legacy CS1-B/DS1-B switches, though the SAI family uses current AirTAC sensors. For sizing, a 32 mm bore yields 402 N push at 0.5 MPa; dropping to a 25 mm bore or stepping up to 40 mm (628 N) shifts your force class. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variants to hold loads. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X85S
- ✓ 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 SI32X85S FAQ
Yes, the SI32X85S is discontinued. The direct replacement is the SAI32X85S. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 85 mm stroke, G1/8 port, and mounting fixtures perfectly.
The 32 mm bore features a G1/8 port and provides 402 N push / 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max of 82 kgf at 1.0 MPa. It uses a 12 mm rod with an M10x1.25 thread.
Request a Quote for the SAI32X85S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X85S replacement — usually within 7-8 hours.