This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X30, 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 SI63X30
The AirTAC SI63 Standard Cylinder SI63X30 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 SAI63X30, 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 → SAI63X30
- 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 SI63X30
The AirTAC SI63X30 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 30mm stroke, delivering 1559N push force at 0.5MPa via a G3/8 port. As an end-of-line product, it transitions directly to the SAI63X30 direct replacement, retaining the exact interface, M16x1.5 rod thread, and 30mm cushions.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note this specific SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors, and for load-holding you must explore SAIL lock variants or external pilot check valves.
Airtac SI63 Standard Cylinder SI63X30 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X30 |
| 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 SAI63X30 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 SAI63X30 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 SI63X30
| 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 SI63X30 Is Used
Short-Stroke Clamping
Ideal for holding parts during machining, utilizing the 1559N push force within a compact 30mm travel envelope.
Package Diverting
Provides robust actuation for routing items on production lines where high force and rapid 30mm movements are required.
Ejector Mechanisms
Delivers reliable, high-impact ejection of finished components from press beds using the 63mm bore capacity.
Replacing the Airtac SI63 Standard Cylinder SI63X30 with the SAI63X30
To replace the SI63X30, order the SAI63X30. It drops into existing fixtures via the identical ISO 15552 mounting interface, matching the 63mm bore, 30mm stroke, G3/8 port, and 1559N thrust. Confirm your mounting accessory (LB, FA, TC, etc.) and thread standard (PT/G/NPT). Because this SKU has no magnet, it cannot support position sensing; if switches are needed, select an SAI63X30S and use current AirTAC sensors. For sizing alternatives, dropping to a 50mm bore gives 982N push at 0.5MPa, while stepping up to an 80mm bore provides 2513N. Remember, a standard cylinder drifts without live air; for suspended loads, specify the SAIL air-released lock, the BSAI clamp-lock, or an external rod lock. The 30mm stroke is very short, so side-load and rod-bending risks are minimal, but ensure square mounting to prevent seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X30
- ✓ 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 SI63X30 FAQ
Yes, the SI63X30 is discontinued. The direct replacement is the SAI63X30. It shares the identical ISO 15552 mounting interface, 63mm bore, 30mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly while upgrading the piston seal.
The 63mm bore features a G3/8 air port. At 0.5MPa it provides 1559N push and 1402N pull force. At 0.7MPa push is 2182N, and at 0.9MPa it is 2805N. The theoretical maximum force is 318kgf at 1.0MPa.
Request a Quote for the SAI63X30
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X30 replacement — usually within 7-8 hours.