This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X850SH, 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 SI63X850SH
The AirTAC Airtac SI63 Standard Cylinder SI63X850SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 850mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X850SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X850SH
- 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 SI63X850SH
The AirTAC SI63X850SH is a discontinued double-acting ISO 15552 profile cylinder with an 850 mm stroke and a high-temperature Viton H seal (0-150 C). Generating 1559 N push at 0.5 MPa through its G3/8 port, its direct successor is the SAI63X850SH.
The SAI upgrade retains the identical ISO 15552 mounting interface but introduces a two Y-shaped one-way piston seal for low start-up pressure. The SAI family also adds BSAI clamp-lock and SAIL lock variants the SI lacked. This -S model supports CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X850SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X850SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X850SH |
| Bore size | Ø63 mm |
| Stroke | 850 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 SAI63X850SH 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 SAI63X850SH 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 SI63X850SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×850 | 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 SI63X850SH Is Used
Long-Stroke Ejection
Pushes parts out of a hot press over 850 mm, relying on the 1559 N force and Viton H seals to withstand ambient heat.
Pallet Diversion
Extends across a wide belt to deflect heavy packages, requiring external guides to prevent rod bending over the long travel.
Replacing the Airtac SI63 Standard Cylinder SI63X850SH with the SAI63X850SH
To replace the SI63X850SH, order the SAI63X850SH: it matches the 63 mm bore, 850 mm stroke, M16x1.5 rod thread, G3/8 port, and ISO 15552 mounting. Because this is an 850 mm stroke, use external guides to prevent rod bending and side-load wear. If you need more force, the 80 mm bore yields 2513 N push at 0.5 MPa; if less, the 50 mm bore gives 982 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or the SAIL lock variant for load holding. The Viton H seal handles 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X850SH
- ✓ 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 SI63X850SH FAQ
Yes, the SI63X850SH is discontinued. The direct replacement is the SAI63X850SH. It shares the same ISO 15552 mounting interface, 63 mm bore, 850 mm stroke, G3/8 port, and Viton H high-temperature seal, fitting existing fixtures perfectly.
The G3/8 port supplies a push force of 1559 N and a pull force of 1402 N at 0.5 MPa. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum force is 318 kgf at 1.0 MPa, operating at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X850SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X850SH replacement — usually within 7-8 hours.