This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X800TC, 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 SI63X800TC
The AirTAC Airtac SI63 Standard Cylinder SI63X800TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X800TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X800TC
- 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 SI63X800TC
The AirTAC SI63X800TC is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 800 mm stroke. It delivers 1559 N push force at 0.5 MPa, uses a G3/8 port, and features a TC trunnion mount. AirTAC replaced this legacy unit with the SAI63X800TC, a direct sharing the same interface, force, and dimensions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. For high-temperature needs, Viton H seals raise the limit to 150 C.
Airtac SI63 Standard Cylinder SI63X800TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X800TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X800TC |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAI63X800TC 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 SAI63X800TC 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 SI63X800TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SI63X800TC Is Used
Long-Stroke Material Push
Ideal for transferring heavy pallets across conveyor lanes using the full 800 mm travel and 1559 N push force at 0.5 MPa.
Large Fixture Actuation
Drives sizable clamping fixtures on automated assembly lines where the TC trunnion mount absorbs centerline shifts.
Replacing the Airtac SI63 Standard Cylinder SI63X800TC with the SAI63X800TC
To replace the SI63X800TC, order the SAI63X800TC to retain the exact ISO 15552 TC trunnion mounting, 63 mm bore, 800 mm stroke, G3/8 port, and M16x1.5 rod thread. When sizing, a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore provides 2513 N. At 800 mm, a long stroke demands external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. This no-magnet SKU cannot support sensing.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X800TC
- ✓ 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 SI63X800TC FAQ
Yes, the SI63X800TC is discontinued. The direct replacement is the SAI63X800TC. It is dimensionally interchangeable per ISO 15552, maintaining the same 63 mm bore, 800 mm stroke, G3/8 port, TC mount, and output force.
It features a G3/8 air port and M16x1.5 rod thread. The thrust is 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N push at 0.9 MPa, with a theoretical maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X800TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X800TC replacement — usually within 7-8 hours.