This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X220TC, 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 SI63X220TC
The AirTAC Airtac SI63 Standard Cylinder SI63X220TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 220mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X220TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke220 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X220TC
- 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 SI63X220TC
The AirTAC SI63X220TC is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 220 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X220TC, a direct replacement retaining the exact ISO 15552 mounting interface, TC trunnion mount, bore, stroke, output force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. For load-holding, note that a standard cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock or pilot check valve for suspended loads. This non-magnetic SKU lacks a sensor groove switch capability, and the SAI family adds lock (SAIL) and valve (SAIF) variants the SI lacked.
Airtac SI63 Standard Cylinder SI63X220TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X220TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X220TC |
| Bore size | Ø63 mm |
| Stroke | 220 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 SAI63X220TC 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 SAI63X220TC 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 SI63X220TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×220 | 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 SI63X220TC Is Used
Clamp Actuation
Provides 1559 N of push force at 0.5 MPa to secure heavy workpieces during machining operations.
Package Diverting
Drives a 220 mm stroke diverter arm to route medium-weight goods across material handling lines.
Pallet Stopping
Acts as a robust stop gate for pallets, utilizing the TC trunnion mount to handle pivot stresses.
Replacing the Airtac SI63 Standard Cylinder SI63X220TC with the SAI63X220TC
To replace the SI63X220TC, order the SAI63X220TC. Confirm the ISO 15552 TC trunnion mounting interface, 63 mm bore, 220 mm stroke, and G3/8 port (available in PT, G, or NPT threads). This non-magnetic SKU cannot accept a position switch; if sensing is needed, select an SAI equivalent with the -S magnet option for current AirTAC switches. For sizing, the 63 mm bore yields 1559 N push at 0.5 MPa; stepping down to a 50 mm bore gives 982 N, while an 80 mm bore provides 2513 N. Because the 220 mm stroke is under 300 mm, rod-bending side loads are less critical, but always guide the load. Remember that a plain cylinder does not hold load without live air; for secure holding, consider the SAIL lock, BSAI clamp-lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X220TC
- ✓ 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 SI63X220TC FAQ
Yes, the SI63X220TC is discontinued. The direct replacement is the SAI63X220TC. It shares the same ISO 15552 mounting interface, 63 mm bore, 220 mm stroke, G3/8 port, and TC trunnion mount, fitting directly into existing fixtures.
The 63 mm bore uses a G3/8 air 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 theoretical max force of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X220TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X220TC replacement — usually within 7-8 hours.