This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X850TC, 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 SI63X850TC
The AirTAC Airtac SI63 Standard Cylinder SI63X850TC 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 SAI63X850TC, 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 → SAI63X850TC
- 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 SI63X850TC
The AirTAC SI63X850TC is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 850 mm stroke. It features a TC trunnion mount and delivers 1559 N of push force at 0.5 MPa through its G3/8 port. Because this legacy unit lacks the -S magnet option, it cannot accept position sensors.
You should order the direct replacement SAI63X850TC, which matches the original ISO 15552 mounting interface, bore, stroke, force, and port. The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For load holding, note that a standard cylinder drifts without air; you need an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X850TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X850TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X850TC |
| 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 SAI63X850TC 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 SAI63X850TC 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 SI63X850TC
| 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 SI63X850TC Is Used
Long-Stroke Diversion
Pushes heavy pallets laterally across a conveyor line using the 850 mm stroke and 1559 N push force at 0.5 MPa.
Automated Press Clamping
Secures large workpieces in an assembly fixture via the TC trunnion mount, handling up to 318 kgf maximum theoretical force at 1.0 MPa.
Replacing the Airtac SI63 Standard Cylinder SI63X850TC with the SAI63X850TC
To replace the SI63X850TC, specify the SAI63X850TC to retain the exact 63 mm bore, 850 mm stroke, TC trunnion mount, and G3/8 port. The ISO 15552 interface ensures dimensional interchangeability with existing fixtures. This SKU has no magnet, so it cannot support switches; if sensing is needed, order an SAI with the S suffix for CS1-B/DS1-B compatibility. For higher force, the 80 mm bore offers 2513 N push. Because the 850 mm stroke is long, use an external guide to prevent rod bending and side-load damage. The cushion only decelerates; it does not hold load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X850TC
- ✓ 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 SI63X850TC FAQ
Yes, the AirTAC SI63X850TC is discontinued. The direct replacement is the SAI63X850TC. It shares the identical ISO 15552 mounting interface, 63 mm bore, 850 mm stroke, TC mount, and G3/8 port, fitting directly into your existing setup.
This 63 mm bore double-acting cylinder uses a G3/8 port. It generates 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, and a maximum theoretical force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X850TC
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