This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X1000S, 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 SI32X1000S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 1000mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X1000S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X1000S is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 1000 mm stroke. Delivering 402 N push force at 0.5 MPa, it features a G1/8 port and M10x1.25 rod thread. AirTAC replaced this legacy unit with the SAI32X1000S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke and port size.
The SAI32X1000S 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 variants absent in the SI line. Your -S suffix means a piston magnet for CS1-B/DS1-B sensors.
| Model | Airtac SI32 Standard Air Cylinder SI32X1000S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X1000S |
| Bore size | Ø32 mm |
| Stroke | 1000 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 SAI32X1000S 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 SAI32X1000S 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. |
| ×1000 | 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).
Drives 1000 mm pusher arms on packaging lines to divert products between parallel conveyor belts.
Elevates lightweight 20 kg tote boxes between floor levels using the 32 mm bore's vertical lift capacity.
Moves tooling carriages along extended machining centers, relying on the 402 N push force for steady positioning.
To replace the SI32X1000S, order the SAI32X1000S. Confirm the ISO 15552 mounting interface, 32 mm bore, 1000 mm stroke, G1/8 port (PT/G/NPT thread) and mounting accessory. The -S magnet allows CS1-B/DS1-B switches, though the SAI uses current AirTAC sensors. At 1000 mm stroke, prevent rod bending by using an external guide to handle side loads. For sizing, a 40 mm bore yields 628 N push at 0.5 MPa, while a 32 mm bore yields 563 N at 0.7 MPa. Note that a plain cylinder drifts without live air; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding.
Replacement checklist
Yes, the SI32X1000S is discontinued. The direct replacement is the SAI32X1000S. It shares the identical ISO 15552 mounting interface, 32 mm bore, 1000 mm stroke, output force and G1/8 port, fitting directly into existing fixtures.
The 32 mm bore provides 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 max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s, with a G1/8 port and 27 mm adjustable air cushions at both ends.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X1000S replacement — usually within 7-8 hours.