This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX25SH, 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 SI32BX25SH
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX25SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 25mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX25SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke25 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX25SH
- 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 SI32BX25SH
The AirTAC SI32BX25SH is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 25 mm stroke. Built with an extruded aluminum barrel, it delivers 402 N push force at 0.5 MPa. The exact drop-in replacement is the SAI32BX25SH, matching the bore, stroke, G1/8 port, M10x1.25 rod thread, and ISO 15552 mounting interface. This specific SKU features a SUS304 stainless piston rod for corrosion resistance and a Viton H seal for high-temperature environments up to 150 C.
Upgrading to the SAI family retains all original dimensions but introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The original SI magnet configuration supports legacy CS1-B/DS1-B switches, while the SAI replacement uses current AirTAC sensors. For sizing, a safe working load is roughly 241 N (60% of the 0.5 MPa push force), translating to a vertical lift capacity of about 20 kg with a 2:1 safety margin.
Airtac SI32 Standard Air Cylinder SI32BX25SH Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX25SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX25SH |
| Bore size | Ø32 mm |
| Stroke | 25 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 SAI32BX25SH 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 SAI32BX25SH produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI32 Standard Air Cylinder SI32BX25SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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 SI32BX25SH Is Used
Compact Clamping
Ideal for securing small machined parts in high-temperature cells, utilizing the 402 N push force and Viton H seal up to 150 C.
Lab Automation
Suitable for short 25 mm stroke positioning tasks in testing equipment where the SUS304 rod prevents moisture corrosion.
Light Sorting
Handles lightweight 20 kg vertical diverting tasks with a 2:1 safety margin, fitting easily into tight machinery profiles.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX25SH with the SAI32BX25SH
To replace the SI32BX25SH, order the SAI32BX25SH, which drops directly into existing ISO 15552 fixtures. Confirm the G1/8 port, M10x1.25 rod thread, 25 mm stroke, and the -S magnet for sensor switching. Because this unit uses the -B SUS304 rod and -H Viton seal, verify those options on the SAI order to maintain high-temperature and corrosion resistance. If you need more force, the neighboring 40 mm bore offers 628 N push at 0.5 MPa; if less force is acceptable, check smaller non-ISO alternatives. A plain ISO 15552 cylinder does not hold load without live air—the cushion only decelerates—so for suspended loads use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX25SH
- ✓ 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 SI32BX25SH FAQ
Yes, the SI32BX25SH is discontinued. The exact drop-in replacement is the SAI32BX25SH. It is dimensionally interchangeable per ISO 15552, retaining the same 32 mm bore, 25 mm stroke, G1/8 port, and mounting interface.
The 32 mm bore provides 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Operating speed is 30-800 mm/s, with a 27 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX25SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX25SH replacement — usually within 7-8 hours.