This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32BX145, 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 SI32BX145
The AirTAC SI32 Standard Air Cylinder SI32BX145 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 145mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32BX145, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke145 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX145
- 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 SI32BX145
The AirTAC SI32BX145 is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 145 mm stroke. Featuring a SUS304 stainless piston rod (-B) and G1/8 port, it delivers 402 N push force at 0.5 MPa. AirTAC replaced this EOL unit with the SAI32BX145, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, output force, port and mounting fixtures.
The SAI upgrade introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note that this specific SKU lacks a magnet (-S) and therefore cannot accept position sensors like the legacy CS1-B or DS1-B switches.
Airtac SI32 Standard Air Cylinder SI32BX145 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX145 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX145 |
| Bore size | Ø32 mm |
| Stroke | 145 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 SAI32BX145 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 SAI32BX145 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 SI32BX145
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×145 | 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 SI32BX145 Is Used
Stainless Rod Clamping
Ideal for light-duty clamping tasks in washdown environments where the SUS304 rod resists corrosion and the 402 N force securely holds small components.
Compact Part Ejection
Provides reliable ejection of small machined parts on automated lines, utilizing the 145 mm stroke and adjustable air cushions to ensure smooth end-of-travel deceleration.
Lab Positioning Fixtures
Suitable for vertically lifting test rigs or sample trays up to 20 kg, offering precise movement within laboratory equipment using standard ISO 15552 mounts.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX145 with the SAI32BX145
To replace the discontinued SI32BX145, order the SAI32BX145. Verify your existing fixture's ISO 15552 mounting interface dimensions, the 145 mm stroke, and the G1/8 port. Confirm if the SUS304 stainless rod (-B) is required for your environment, and note that because this SKU has no magnet, it cannot support sensing switches. If you need to size up or down, neighbouring bores (40 mm) offer higher force (628 N push @0.5 MPa), while downsizing reduces the footprint. For any stroke length of 145 mm or greater, ensure adequate guide support to prevent rod bending and side-load wear. Because this is a plain double-acting cylinder, it will not hold a load if air pressure drops; the cushions only decelerate the piston near the end of stroke. For secure load holding, consider an external pilot-operated check valve, a rod lock, or the SAIL (air-released lock) and BSAI (clamp-lock) variants from the SAI family.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX145
- ✓ 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 SI32BX145 FAQ
Yes, the AirTAC SI32BX145 is discontinued. The direct replacement is the SAI32BX145. It features the same ISO 15552 mounting interface, 32 mm bore, 145 mm stroke, G1/8 port, and output force, fitting directly into existing fixtures.
The 32 mm bore features a G1/8 air port and an M10x1.25 rod thread. 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 SAI32BX145
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX145 replacement — usually within 7-8 hours.