This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX950, 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 SI32BX950
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX950 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 950mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX950, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke950 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX950
- 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 SI32BX950
The AirTAC SI32BX950 is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless steel rod and a 950 mm stroke. Delivering 402 N push force at 0.5 MPa, it is superseded by the SAI32BX950. This drop-in successor shares the exact bore, stroke, G1/8 port, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. For this bore, safe working load is roughly 241 N (60% of the 402 N push force), equating to a 20 kg vertical lift with a 2:1 margin. Note this SKU lacks a magnet and cannot accept CS1-B/DS1-B sensors. For load holding, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
Airtac SI32 Standard Air Cylinder SI32BX950 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX950 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX950 |
| Bore size | Ø32 mm |
| Stroke | 950 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 SAI32BX950 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 SAI32BX950 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 SI32BX950
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×950 | 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 SI32BX950 Is Used
Long-Stroke Diversion
Pushes lightweight packages across a transfer line with its 950 mm reach, utilizing the SUS304 rod for corrosion resistance in washdown zones.
Elevating Gates
Actuates vertical lifting gates up to 20 kg safely, relying on external guides to prevent rod bending over the extended travel distance.
Lab Sample Handling
Moves sample racks in testing environments where the stainless steel rod prevents contamination and the compact 32 mm bore fits tight spaces.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX950 with the SAI32BX950
To replace the SI32BX950, order the SAI32BX950, confirming the ISO 15552 mounting interface, 32 mm bore, 950 mm stroke, G1/8 port (PT/G/NPT), and SUS304 rod. Sizing both ways: a neighbouring 40 mm bore offers 628 N push at 0.5 MPa, while this 32 mm bore yields 563 N at 0.7 MPa. Because the 950 mm stroke invites rod bending, use external guides to prevent side loads. A plain cylinder drifts on air loss; use a pilot check valve or the SAIL/BSAI lock variant to hold loads. Without a -S magnet, this cylinder cannot mount sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX950
- ✓ 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 SI32BX950 FAQ
Yes, the SI32BX950 is discontinued. The exact drop-in replacement is the SAI32BX950, which maintains the same ISO 15552 mounting interface, 32 mm bore, 950 mm stroke, and G1/8 port. It fits existing fixtures directly.
This double-acting cylinder uses a G1/8 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 of 82 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI32BX950
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX950 replacement — usually within 7-8 hours.