This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X175SH, 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 SI63X175SH
The AirTAC Airtac SI63 Standard Cylinder SI63X175SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X175SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X175SH
- 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 SI63X175SH
The AirTAC SI63X175SH is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 175 mm stroke. It delivers 1559 N push and 1402 N pull at 0.5 MPa, features a G3/8 port, and includes a Viton H high-temperature seal rated for 0 to 150 C. The direct replacement is the SAI63X175SH, matching the bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI63 Standard Cylinder SI63X175SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X175SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X175SH |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAI63X175SH 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 SAI63X175SH 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 SI63X175SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SI63X175SH Is Used
Hot Material Ejection
Handles 79 kg vertical lift loads in molding lines where the Viton H seal survives 0-150 C ambient heat near heated platens.
Heavy Transfer Divert
Provides 1559 N push at 0.5 MPa to shift dense pallets or workpieces reliably between automated processing stations.
Clamp Actuation
Generates up to 318 kgf maximum force at 1.0 MPa for securing heavy fabrication components during machining operations.
Replacing the Airtac SI63 Standard Cylinder SI63X175SH with the SAI63X175SH
To replace the SI63X175SH, order the SAI63X175SH. Confirm the ISO 15552 mounting interface, 63 mm bore, 175 mm stroke, G3/8 port (PT/G/NPT thread options), and your specific mounting accessory. The -S magnet enables CS1-B/DS1-B sensors, and the -H Viton H seal handles 0-150 C environments. Sizing both ways: a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 175 mm the side-load risk is low, but maintain guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X175SH
- ✓ 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 SI63X175SH FAQ
Yes, the SI63X175SH is discontinued. The direct replacement is the SAI63X175SH. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 175 mm stroke, G3/8 port, and mounting fixtures exactly.
The 63 mm bore uses a G3/8 port. Force output is 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 SAI63X175SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X175SH replacement — usually within 7-8 hours.