This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX70, 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 SI32BX70
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX70 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 70mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX70, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke70 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX70
- 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 SI32BX70
The AirTAC SI32BX70 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 70mm stroke. It delivers 402N push force at 0.5MPa through a G1/8 port. This SUS304 stainless-rod variant is directly replaced by the SAI32BX70, a true drop-in sharing the exact interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this SKU lacks a magnet, it cannot accept a sensor. A computed buyer insight: safe working load is roughly 241N (60% of the 402N push force), allowing a 20kg vertical lift with a 2:1 margin.
Airtac SI32 Standard Air Cylinder SI32BX70 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX70 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX70 |
| Bore size | Ø32 mm |
| Stroke | 70 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 SAI32BX70 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 SAI32BX70 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 SI32BX70
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SI32BX70 Is Used
Small Part Ejection
Uses the 402N push force at 0.5MPa to reliably push lightweight finished parts out of a machining center.
Stainless Rod Clamping
The SUS304 rod option excels in lightly corrosive environments for clamping plastic or composite components.
Lab Fixture Actuation
Provides compact 70mm stroke actuation for testing jigs where a 20kg vertical lift margin is sufficient.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX70 with the SAI32BX70
To replace the SI32BX70, order the SAI32BX70. Confirm the ISO 15552 mounting interface, 32mm bore, 70mm stroke, G1/8 port, and your specific mounting accessory. This SKU has no magnet (-S), so it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. For higher loads, the neighbouring 40mm bore yields 628N push at 0.5MPa. Note that a plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The 70mm stroke avoids rod-bending side-load concerns, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX70
- ✓ 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 SI32BX70 FAQ
Yes, the SI32BX70 is discontinued. The exact drop-in replacement is the SAI32BX70. It shares the same ISO 15552 mounting interface, 32mm bore, 70mm stroke, output force, and G1/8 port, fitting existing fixtures perfectly.
The 32mm bore uses a G1/8 port. Theoretical forces are: 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum of 82kgf at 1.0MPa. It operates at 30-800mm/s.
Request a Quote for the SAI32BX70
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX70 replacement — usually within 7-8 hours.