This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX150SH, 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 SI63BX150SH
The AirTAC Airtac SI63 Standard Cylinder SI63BX150SH 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 SAI63BX150SH, 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 → SAI63BX150SH
- 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 SI63BX150SH
The AirTAC SI63BX150SH is a discontinued double-acting ISO 15552 profile cylinder featuring a 63mm bore, 150mm stroke, and a SUS304 stainless steel rod (-B) for corrosion resistance. Equipped with a piston magnet (-S) and high-temp Viton seals (-H), it delivers 1559 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI63BX150SH, a direct upgrade sharing the exact ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread.
The SAI successor introduces an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life. Note that standard cylinders drift without live air; for load holding, explore the SAIL or BSAI lock variants instead of relying on the 30mm adjustable air cushions.
Airtac SI63 Standard Cylinder SI63BX150SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX150SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX150SH |
| 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 SAI63BX150SH 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 SAI63BX150SH 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 SI63BX150SH
| 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 SI63BX150SH Is Used
High-Temp Material Handling
Ideal for moving parts in heated zones up to 150 C, utilizing the Viton H seals and SUS304 rod to resist thermal degradation and corrosion while pushing 1559 N loads.
Stainless Rod Actuation
Perfect for washdown or chemically exposed assembly stations where the SUS304 piston rod prevents rust, providing reliable 150mm stroke cycling in harsh environments.
Mid-Range Transfer Diverting
Delivers 2182 N at 0.7 MPa to divert moderate pallets or workpieces on production lines, dropping seamlessly into existing ISO 15552 trunnion or foot mounts.
Replacing the Airtac SI63 Standard Cylinder SI63BX150SH with the SAI63BX150SH
To replace the discontinued SI63BX150SH, order the SAI63BX150SH. Verify your existing fixture matches the ISO 15552 mounting dimensions, G3/8 port, and M16x1.5 rod thread. Retain the -B (SUS304 rod), -S (magnet for CS1-B/DS1-B switches), and -H (Viton high-temp) attributes. If downsizing, a 50mm bore yields 982 N push at 0.5 MPa; if upsizing, an 80mm bore provides 2513 N. Remember that a plain cylinder does not hold load on air loss—the cushions only decelerate. For secure holding, specify the SAIL (air-released lock) or BSAI (clamp-lock) variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX150SH
- ✓ 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 SI63BX150SH FAQ
Yes, the SI63BX150SH is discontinued. The direct replacement is the SAI63BX150SH. It shares the identical ISO 15552 mounting interface, 63mm bore, 150mm stroke, G3/8 port, and output force, fitting directly into your existing fixtures.
The 63mm bore features a G3/8 air port and M16x1.5 rod thread. 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 maximum of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX150SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX150SH replacement — usually within 7-8 hours.