This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X150STC, 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 SI32X150STC
The AirTAC SI32 Standard Air Cylinder SI32X150STC 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 SAI32X150STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke150 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X150STC
- 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 SI32X150STC
The AirTAC SI32X150STC 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 through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X150STC, a direct upgrade sharing the exact same ISO 15552 mounting interface, TC trunnion mount, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This unit includes a magnet for CS1-B/DS1-B sensors, and the SAI family adds lock variants like SAIL and BSAI absent in the SI line.
Airtac SI32 Standard Air Cylinder SI32X150STC Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X150STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X150STC |
| 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 SAI32X150STC 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 SAI32X150STC 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 SI32X150STC
| 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).
Where the Airtac SI32 Standard Air Cylinder SI32X150STC Is Used
Small Part Ejection
Uses the 402 N push force at 0.5 MPa to reliably kick lightweight plastic or machined components out of a fixture at the end of the cycle.
Package Diverting
The 150 mm stroke actuates a diverter arm to route small boxes on a conveyor line, taking advantage of the 30-800 mm/s speed range.
Clamp Actuation
Provides secure holding force for secondary machining operations, utilizing the TC trunnion mount to accommodate pivoting motion.
Replacing the Airtac SI32 Standard Air Cylinder SI32X150STC with the SAI32X150STC
To replace the SI32X150STC, order the SAI32X150STC. Verify the ISO 15552 TC trunnion interface, 32 mm bore, 150 mm stroke, G1/8 port, and the -S magnet for legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). If you need more force, the neighboring 40 mm bore yields 628 N push at 0.5 MPa; if less is acceptable, check smaller custom options. Because stroke is 150 mm, ensure adequate guidance to prevent rod bending under side loads. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X150STC
- ✓ 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 SI32X150STC FAQ
Yes, the SI32X150STC is discontinued. The direct replacement is the SAI32X150STC. 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.
This 32 mm bore double-acting cylinder uses a G1/8 air port. It delivers 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32X150STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X150STC replacement — usually within 7-8 hours.