This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X150TC, 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 SI32X150TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 150mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X150TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X150TC is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 150 mm stroke. It delivers 402 N push force at 0.5 MPa via a G1/8 port. The direct replacement is the SAI32X150TC, matching the exact TC trunnion mount, stroke and interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. For sensing, note this specific SI SKU lacks the -S magnet and cannot take a CS1-B/DS1-B switch.
| Model | Airtac SI32 Standard Air Cylinder SI32X150TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X150TC |
| Bore size | Ø32 mm |
| Stroke | 150 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 SAI32X150TC 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 SAI32X150TC 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. |
| ×150 | 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).
Uses the 402 N push force at 0.5 MPa to reliably push lightweight molded components out of an injection press fixture.
Actuates a routing gate on a packaging line, where the 150 mm stroke provides the exact travel needed to redirect small cartons.
Secures thin workpieces in an automated machining cell, taking advantage of the compact 32 mm ISO 15552 profile barrel.
To replace the SI32X150TC, order the SAI32X150TC. Confirm the ISO 15552 TC trunnion interface, 150 mm stroke, G1/8 port (PT/G/NPT thread options) and 32 mm bore. Because this SKU has no -S magnet, it cannot accept position sensors. For sizing, the 40 mm neighbor bore yields 628 N push at 0.5 MPa if more force is needed. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or explore the SAIL lock and SAIF self-valve variants. At 150 mm stroke, side-load risks are low, but ensure alignment to prevent rod bending.
Replacement checklist
Yes, the SI32X150TC is discontinued. The direct replacement is the SAI32X150TC. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 150 mm stroke, G1/8 port, TC trunnion mount and output force, so it fits existing fixtures directly.
This double-acting 32 mm bore cylinder uses a G1/8 air 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 theoretical maximum force of 82 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X150TC replacement — usually within 7-8 hours.