This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X30SCB, 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 SI63X30SCB
The AirTAC Airtac SI63 Standard Cylinder SI63X30SCB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 30mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X30SCB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X30SCB
- 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 SI63X30SCB
The AirTAC SI63X30SCB is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 30 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa, operating through a G3/8 port. AirTAC replaced this legacy unit with the SAI63X30SCB, a direct replacement sharing the exact ISO 15552 mounting interface, M16x1.5 rod thread, and CB clevis mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the original SI lacked. This -S SKU includes a piston magnet for CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X30SCB Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X30SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X30SCB |
| Bore size | Ø63 mm |
| Stroke | 30 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 SAI63X30SCB 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 SAI63X30SCB 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 SI63X30SCB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×30 | 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 SI63X30SCB Is Used
Short-Stroke Clamping
Ideal for holding heavy machined parts during milling, utilizing the 1559 N push force across a compact 30 mm travel.
Package Diverting
Provides robust actuation for heavy-duty sorting gates and pusher arms on high-throughput material handling lines.
Press Ejection
Delivers rapid 30 mm ejection strokes in stamping presses, benefiting from the 30-800 mm/s speed range and CB clevis pivot.
Replacing the Airtac SI63 Standard Cylinder SI63X30SCB with the SAI63X30SCB
To replace the SI63X30SCB, order the SAI63X30SCB. Confirm the ISO 15552 CB clevis mounting, 63 mm bore, 30 mm stroke, G3/8 port, and the -S magnet for legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). If you need more force, the 80 mm bore yields 2513 N push at 0.5 MPa; if less, the 50 mm bore provides 982 N. Note that a plain cylinder drifts without live air—the cushion only decelerates. For secure holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For self-contained valve control, explore the SAIF variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X30SCB
- ✓ 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 SI63X30SCB FAQ
Yes, the SI63X30SCB is discontinued. The direct replacement is the AirTAC SAI63X30SCB. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 30 mm stroke, G3/8 port, and CB mounting interface.
The G3/8 port feeds a 63 mm bore yielding 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a 318 kgf maximum at 1.0 MPa. Operating pressure is 0.15-1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X30SCB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X30SCB replacement — usually within 7-8 hours.