This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X170S, 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.

The AirTAC SI32 Standard Air Cylinder SI32X170S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 170mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X170S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X170S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 170 mm stroke. Providing 402 N push force at 0.5 MPa via a G1/8 port, it is replaced by the direct replacement SAI32X170S.
The SAI upgrade retains identical ISO 15552 mounting dimensions but features a new piston seal with two Y-shaped elements for low start-up pressure.
| Model | Airtac SI32 Standard Air Cylinder SI32X170S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X170S |
| Bore size | Ø32 mm |
| Stroke | 170 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 SAI32X170S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32X170S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×170 | 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).
Ideal for pushing lightweight machined components out of a fixture using the 402 N push force at 0.5 MPa.
Handles 170 mm stroke diverting arms on conveyor lines, moving small boxes with a 20 kg vertical lift capacity.
Drives secondary clamps on automated assembly grids where compact ISO 15552 mounting and a G1/8 port are required.
To replace this SI32X170S, order the SAI32X170S keeping the 32 mm bore, 170 mm stroke, G1/8 port, M10x1.25 thread, and the -S magnet for CS1-B/DS1-B switches. If you need more force, the 40 mm bore yields 628 N push at 0.5 MPa. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI32X170S is discontinued. The direct replacement is the SAI32X170S, which matches the 32 mm bore, 170 mm stroke, 402 N force, G1/8 port, and ISO 15552 mounting interface.
The 32 mm bore uses a G1/8 port. It generates 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 maximum theoretical force of 82 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X170S replacement — usually within 7-8 hours.