This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X185S, 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 SI32X185S
The AirTAC SI32 Standard Air Cylinder SI32X185S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 185mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X185S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke185 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X185S
- 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 SI32X185S
The AirTAC SI32X185S is a discontinued double-acting ISO 15552 profile cylinder. Delivering 402 N push force at 0.5 MPa through a 32 mm bore, it is replaced by the SAI32X185S. This direct upgrade shares the exact mounting interface, 185 mm stroke, and G1/8 port.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The SAI family adds SAIL, SAIF, and BSAI lock variants. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI32 Standard Air Cylinder SI32X185S Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X185S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X185S |
| Bore size | Ø32 mm |
| Stroke | 185 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 SAI32X185S 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 SAI32X185S 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 SI32X185S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×185 | 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 SI32X185S Is Used
Small Part Ejection
Uses the 402 N push force to eject small molded parts from a fixture, fitting neatly into tight machine cells.
Package Diverting
Actuates a routing gate on a conveyor line, where the 185 mm stroke provides precise lateral movement.
Clamp Actuation
Drives low-force secondary clamps on an assembly pallet, cycling rapidly at speeds up to 800 mm/s.
Replacing the Airtac SI32 Standard Air Cylinder SI32X185S with the SAI32X185S
To replace the SI32X185S, order the SAI32X185S. Confirm the ISO 15552 mounting interface, 32 mm bore, 185 mm stroke, G1/8 port (PT/G/NPT thread), and mounting accessory. The -S suffix means a piston magnet for CS1-B/DS1-B switches. Sizing both ways: a 40 mm bore yields 628 N push at 0.5 MPa, while dropping to 0.5 MPa on a 32 mm bore gives 402 N. At 185 mm stroke, side-load is low, but ensure guide alignment to prevent rod bending. A plain cylinder drifts on air loss; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X185S
- ✓ 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 SI32X185S FAQ
Yes, the SI32X185S is discontinued. The direct replacement is the SAI32X185S. It shares the same ISO 15552 mounting interface, 32 mm bore, 185 mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
This 32 mm bore double-acting cylinder has a G1/8 port. It delivers 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max force of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X185S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X185S replacement — usually within 7-8 hours.