This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the drop-in replacement SAI32BX85, 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 SI32BX85
The AirTAC Airtac SI32 Standard Air Cylinder SI32BX85 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 85mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAI32BX85, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke85 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32BX85
- 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 SI32BX85
The AirTAC SI32BX85 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore, 85mm stroke, SUS304 stainless steel rod, and G1/8 port. Delivering 402N push force at 0.5MPa, it is replaced by the SAI32BX85.
The SAI drop-in features an upgraded two Y-shaped piston seal for low start-up pressure. With no -S suffix, this SKU lacks a magnet and cannot take a sensor. Safe working load is ~241N (60% of 402N), allowing ~20kg vertical lift.
Airtac SI32 Standard Air Cylinder SI32BX85 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32BX85 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32BX85 |
| Bore size | Ø32 mm |
| Stroke | 85 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 SAI32BX85 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 SAI32BX85 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 SI32BX85
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×85 | 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 SI32BX85 Is Used
Lab Automation
Drives compact sample handlers where the SUS304 rod resists moisture and the 402N output precisely stages trays.
Small Part Ejection
Pushes lightweight plastic components out of molds using the 85mm travel without overwhelming the mechanics.
Corrosive Sorting
Actuates diverter gates in humid wash-down lines, benefiting from the stainless rod and 30-800mm/s speed range.
Replacing the Airtac SI32 Standard Air Cylinder SI32BX85 with the SAI32BX85
Replace the SI32BX85 with the SAI32BX85 by confirming the ISO 15552 interface, 32mm bore, 85mm stroke, G1/8 port, and SUS304 rod. This non-magnetic SKU cannot accept CS1-B/DS1-B sensors. If you need more force, the 40mm bore yields 628N push at 0.5MPa. For load holding, note the cushion only decelerates; use an external pilot check valve or the SAIL lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32BX85
- ✓ 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 SI32BX85 FAQ
Yes, the SI32BX85 is discontinued. The exact drop-in replacement is the SAI32BX85, which shares the same ISO 15552 mounting interface, 32mm bore, 85mm stroke, force, G1/8 port, and SUS304 rod.
It features a G1/8 port. Force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a theoretical max of 82kgf at 1.0MPa.
Request a Quote for the SAI32BX85
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32BX85 replacement — usually within 7-8 hours.