This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X200, 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 SI63X200
The AirTAC Airtac SI63 Standard Cylinder SI63X200 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X200, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X200
- 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 SI63X200
The AirTAC SI63X200 is a discontinued double-acting ISO 15552 profile cylinder, delivering a push force of 1559 N at 0.5 MPa through its 63 mm bore and 200 mm stroke. AirTAC replaced this legacy unit with the SAI63X200, a direct upgrade retaining the exact ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Because this specific SKU lacks the -S magnet suffix, it cannot accept position sensors like the legacy CS1-B or DS1-B switches. For applications requiring load holding on air loss, note that a standard cylinder drifts; you would need an external pilot check valve or the SAIL/BSAI lock variant.
Airtac SI63 Standard Cylinder SI63X200 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X200 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X200 |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAI63X200 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 SAI63X200 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 SI63X200
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SI63X200 Is Used
Mid-Tonnage Clamping
Ideal for holding workpieces in CNC machining fixtures, utilizing the 1559 N push force at 0.5 MPa to secure parts against cutting forces.
Package Diversion
Drives 200 mm stroke diverting arms on packaging lines to route boxes, operating efficiently within the 30-800 mm/s speed range.
Replacing the Airtac SI63 Standard Cylinder SI63X200 with the SAI63X200
To replace the discontinued SI63X200, order the SAI63X200. Verify your existing fixture's ISO 15552 mounting interface (LB, FA, TC, etc.), the 200 mm stroke, and the G3/8 port size. If you require position sensing, select an SAI63X200S with a magnet, as this non-S SI unit cannot accept a sensor. Sizing both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. The 63 mm bore provides 1559 N push and 1402 N pull at 0.5 MPa. Remember that air cushions only decelerate the load near end-of-stroke; they do not hold position. For dead-load holding, use an external rod lock, a pilot check valve, or the SAIL air-released lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X200
- ✓ 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 SI63X200 FAQ
Yes, the SI63X200 is discontinued. The direct replacement is the AirTAC SAI63X200. It shares the same ISO 15552 mounting interface, 63 mm bore, 200 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The bore features a G3/8 air port. At 0.5 MPa it provides 1559 N push and 1402 N pull. 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.
Request a Quote for the SAI63X200
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X200 replacement — usually within 7-8 hours.