This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X405, 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 SI32X405
The AirTAC SI32 Standard Air Cylinder SI32X405 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 405mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X405, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke405 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X405
- 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 SI32X405
The AirTAC SI32X405 is a discontinued double-acting ISO 15552 profile cylinder featuring a 32mm bore and 405mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32X405. This direct successor matches the exact interface, bore, stroke, force, port and mounting, fitting existing fixtures perfectly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot take a CS1-B/DS1-B sensor. The SAI family also adds SAIL lock, SAIF valve and BSAI clamp variants the SI lacked.
Airtac SI32 Standard Air Cylinder SI32X405 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X405 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X405 |
| Bore size | Ø32 mm |
| Stroke | 405 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 SAI32X405 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 SAI32X405 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 SI32X405
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×405 | 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 SI32X405 Is Used
Long-Stroke Ejection
Handles 405mm ejection of light parts in packaging lines, utilizing the 32mm bore's 402N push force at 0.5MPa.
Vertical Lowering
Controls the descent of 20kg fixtures using adjustable air cushions, requiring external guides to prevent rod bending.
Transfer Diverting
Actuates diverters along conveyor belts where the compact 32mm ISO 15552 profile barrel fits tight spaces.
Replacing the Airtac SI32 Standard Air Cylinder SI32X405 with the SAI32X405
To replace the SI32X405, order the SAI32X405. Verify the ISO 15552 mounting interface, 32mm bore, 405mm stroke, G1/8 port (PT/G/NPT thread), and your mounting accessory. Because this 405mm stroke is long, use external guides to prevent rod bending and side-load wear. This SKU has no magnet (-S), meaning it cannot accept a CS1-B/DS1-B sensor; if sensing is needed, specify a magnet on the SAI order. Sizing both ways: a 40mm bore offers 628N push at 0.5MPa if more force is needed, while a 32mm bore at 0.7MPa yields 563N. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X405
- ✓ 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 SI32X405 FAQ
Yes, the SI32X405 is discontinued. The direct replacement is the AirTAC SAI32X405. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 405mm stroke, 402N force, G1/8 port, and mounting interface.
This double-acting cylinder has a G1/8 port. It delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a theoretical maximum of 82kgf at 1.0MPa. It operates at 30-800mm/s with a 27mm adjustable cushion.
Request a Quote for the SAI32X405
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X405 replacement — usually within 7-8 hours.