This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X150SH, 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 SI63X150SH
The AirTAC Airtac SI63 Standard Cylinder SI63X150SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X150SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X150SH
- 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 SI63X150SH
The AirTAC SI63X150SH is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 150mm stroke. Delivering 1559N push force at 0.5MPa via a G3/8 port, it is directly replaced by the SAI63X150SH. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force and port, fitting existing fixtures perfectly.
The SAI upgrade features an improved piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This -SH configuration includes a high-temp Viton H seal (0 to 150C) and a piston magnet for CS1-B/DS1-B switches. Note that plain cylinders drift without live air; use an external rod lock or SAIL/BSAI variant for load holding.
Airtac SI63 Standard Cylinder SI63X150SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X150SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X150SH |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAI63X150SH 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 SAI63X150SH 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 SI63X150SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SI63X150SH Is Used
Clamping Fixtures
Provides reliable 1559N clamping force at 0.5MPa for securing heavy machined components during milling or drilling operations.
Package Diverters
Drives robust routing arms on high-speed packaging lines, utilizing the 150mm stroke to redirect heavy cartons efficiently.
Pallet Stops
Acts as a heavy-duty pneumatic stop mechanism in automated storage systems, halting loaded pallets with adjustable air cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X150SH with the SAI63X150SH
To replace the discontinued SI63X150SH, order the SAI63X150SH, confirming the ISO 15552 interface, 63mm bore, 150mm stroke, G3/8 port, and magnet. The SAI family adds SAIL, SAIF, and BSAI variants absent in the SI line. For sizing, neighboring bores offer different forces: 50mm yields 982N push at 0.5MPa, while 80mm provides 2513N. If your application requires holding a load during air loss, note that the cushion only decelerates; add a pilot check valve, external rod lock, or choose the SAIL/BSAI lock variant. At 150mm stroke, side-load is minimal, but ensure rod alignment to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X150SH
- ✓ 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 SI63X150SH FAQ
Yes, the SI63X150SH is discontinued. The direct replacement is the SAI63X150SH. It is a true ISO 15552 profile cylinder with the same 63mm bore, 150mm stroke, G3/8 port, and mounting interface, dropping directly into existing fixtures.
This 63mm bore cylinder features a G3/8 port and an M16x1.5 rod thread. Force output is 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and 2805N push at 0.9MPa. The theoretical maximum force is 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X150SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X150SH replacement — usually within 7-8 hours.