This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X82, 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 SI63X82
The AirTAC SI63 Standard Cylinder SI63X82 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 82mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X82, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke82 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X82
- 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 SI63X82
The AirTAC SI63X82 is a discontinued double-acting ISO 15552 profile cylinder with an 82 mm stroke and a 63 mm bore, delivering a thrust of 1559 N at 0.5 MPa. It features a G3/8 air port and a 20 mm carbon steel piston rod with an M16x1.5 thread. AirTAC replaced this legacy unit with the SAI63X82, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade introduces a refined piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU lacks the -S magnet, meaning it cannot accept CS1-B or DS1-B sensors. If you need dead-load holding, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
Airtac SI63 Standard Cylinder SI63X82 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X82 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X82 |
| Bore size | Ø63 mm |
| Stroke | 82 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 SAI63X82 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 SAI63X82 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 SI63X82
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×82 | 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 SI63X82 Is Used
Clamp Actuation
Ideal for securing mid-weight workpieces during machining, using the 1559 N push force to hold components firmly against fixture stops.
Package Diversion
Provides a robust 82 mm stroke to push cartons or totes cleanly across transfer lines without overshooting the travel distance.
Pallet Stops
Acts as a reliable pneumatic stop gate for roller conveyors, raising a 20 mm rod barrier to halt incoming pallets on demand.
Replacing the Airtac SI63 Standard Cylinder SI63X82 with the SAI63X82
To replace the discontinued SI63X82, order the SAI63X82. Verify your existing fixture matches the ISO 15552 mounting interface, and confirm the G3/8 port, 82 mm stroke, and M16x1.5 rod thread. Because this SKU has no -S suffix, it cannot support magnetic sensing; if position feedback is needed, switch to an SAI63X82S equivalent and use current AirTAC switches. When sizing, note the 63 mm bore yields 1559 N push at 0.5 MPa; if less force is required, step down to a 50 mm bore (982 N), or step up to an 80 mm bore (2513 N) for heavier loads. For any load holding on air loss, remember a standard cylinder drifts—add an external pilot check valve or specify the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X82
- ✓ 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 SI63X82 FAQ
Yes, the SI63X82 is discontinued. The direct replacement is the AirTAC SAI63X82. It shares the identical ISO 15552 mounting interface, 63 mm bore, 82 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
This 63 mm bore double-acting cylinder features a G3/8 air port and delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa. At 0.7 MPa it pushes 2182 N, and the theoretical maximum force is 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X82
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X82 replacement — usually within 7-8 hours.