This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X32, 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 SI63 Standard Cylinder SI63X32
The AirTAC SI63 Standard Cylinder SI63X32 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 32mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X32, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke32 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X32
- 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 SI63 Standard Cylinder SI63X32
The AirTAC SI63X32 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 32mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa, operating at 30-800mm/s through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X32, a direct replacement retaining the exact interface, force, and mounting. This non-magnet SKU cannot accept a sensor.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. If high heat is a factor, Viton H seals raise the operating ceiling to 150C.
Airtac SI63 Standard Cylinder SI63X32 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X32 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X32 |
| Bore size | Ø63 mm |
| Stroke | 32 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI63X32 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAI63X32 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI63 Standard Cylinder SI63X32
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×32 | 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 SI63 Standard Cylinder SI63X32 Is Used
Short-Stroke Clamping
Ideal for holding heavy machined parts during milling, using the 1559N push force to secure components firmly against a fixture stop.
Package Diverting
Provides robust actuation for heavy-duty conveyor sorting gates, rapidly extending 32mm to redirect bulky goods off the main belt line.
Pallet Stops
Functions as a heavy-duty pneumatic stop in roller conveyors, throwing a 20mm rod out to halt loaded pallets in staging zones.
Replacing the Airtac SI63 Standard Cylinder SI63X32 with the SAI63X32
To replace the SI63X32, order the SAI63X32. Verify your ISO 15552 mounting fixtures (LB, FA, TC, etc.), the G3/8 air port, and M16x1.5 rod thread. Because this SKU lacks the -S magnet, it cannot support CS1-B/DS1-B sensors; order a magnet-equipped SAI variant if position sensing is required. Sizing up or down: a 50mm bore yields 982N push, while an 80mm bore yields 2513N at 0.5MPa. Note that a plain cylinder drifts on air loss; for load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X32
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI63 Standard Cylinder SI63X32 FAQ
Yes, the AirTAC SI63X32 is discontinued. The direct replacement is the SAI63X32. It shares the exact ISO 15552 mounting interface, 63mm bore, 32mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The 63mm bore provides 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa. Operating speed is 30-800mm/s, with a 30mm adjustable air cushion at both ends.
Request a Quote for the SAI63X32
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X32 replacement — usually within 7-8 hours.