This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X140, 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 SI32X140
The AirTAC SI32 Standard Air Cylinder SI32X140 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 140mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X140, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke140 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → SAI32X140
- 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 SI32X140
The AirTAC SI32X140 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 140mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32X140. This direct successor matches the exact mounting interface, bore, stroke, force and port size.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet (-S), so it cannot take a CS1-B/DS1-B sensor. For load holding, use the SAIL or BSAI lock variants, as cushions only decelerate.
Airtac SI32 Standard Air Cylinder SI32X140 Technical Specifications
| Model | Airtac SI32 Standard Air Cylinder SI32X140 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X140 |
| Bore size | Ø32 mm |
| Stroke | 140 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 SAI32X140 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 SAI32X140 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 SI32X140
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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 SI32X140 Is Used
Small Part Ejection
Provides 402N of push force at 0.5MPa to eject lightweight machined components from fixtures without damaging surfaces.
Compact Clamping
Ideal for securing small electronic housings or plastic assemblies during ultrasonic welding or adhesive curing processes.
Gate Diverting
Drives 140mm stroke diverter arms on packaging lines to route small cartons, operating reliably at speeds up to 800mm/s.
Replacing the Airtac SI32 Standard Air Cylinder SI32X140 with the SAI32X140
To replace the SI32X140, order the SAI32X140. Confirm the ISO 15552 interface, 140mm stroke, G1/8 port (PT/G/NPT thread options) and mounting accessory (LB, FA, TC, etc.). This non-magnet SKU cannot accept a sensor; order an SAI32X140S if position sensing is required. For higher force, the neighboring 40mm bore yields 628N push at 0.5MPa. Because stroke is 140mm, guide external rods to prevent side-load bending. A plain cylinder drifts on air loss; for held loads use the SAIL lock, BSAI clamp-lock, or an external pilot check valve. The SAIF variant adds a built-in valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI32X140
- ✓ 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 SI32X140 FAQ
Yes, the AirTAC SI32X140 is discontinued. The direct replacement is the SAI32X140. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 32mm bore, 140mm stroke, 402N force, G1/8 port and mounting accessories.
This double-acting cylinder has a 12mm rod, M10x1.25 thread, 27mm adjustable cushions, and operates at 30-800mm/s. Force ratings are 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, and a maximum theoretical force of 82kgf at 1.0MPa.
Request a Quote for the SAI32X140
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X140 replacement — usually within 7-8 hours.