This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X175CA, 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 SI63X175CA
The AirTAC Airtac SI63 Standard Cylinder SI63X175CA 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 SAI63X175CA, 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 → SAI63X175CA
- 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 SI63X175CA
The AirTAC SI63X175CA is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore, 175mm stroke, and CA clevis mounting. Delivering 1559 N push force at 0.5 MPa, it uses a G3/8 air port and M16x1.5 rod thread. AirTAC replaced this legacy unit with the SAI63X175CA, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, and port size.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Without a -S suffix, this specific SKU lacks a magnet and cannot accept position sensors.
Airtac SI63 Standard Cylinder SI63X175CA Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X175CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X175CA |
| 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 SAI63X175CA 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 SAI63X175CA 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 SI63X175CA
| 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 SI63X175CA Is Used
Press Clamping
Secures heavy workpieces under machining heads, utilizing the 1559 N push force to prevent deflection during milling or drilling operations.
Pallet Diversion
Actuates routing gates on packaging lines, where the CA clevis accommodates angular misalignment during high-speed package sorting.
Replacing the Airtac SI63 Standard Cylinder SI63X175CA with the SAI63X175CA
To replace the SI63X175CA, order the SAI63X175CA. Verify the CA clevis mounting accessory, G3/8 port thread (PT/G/NPT), and 175mm stroke. Because this SKU has no magnet, it cannot support legacy CS1-B/DS1-B sensors; order a -S variant if position detection is required. When sizing, neighboring bores offer alternatives: 50mm yields 982 N push at 0.5 MPa, while 80mm provides 2513 N. Note that a plain cylinder drifts on air loss; the air cushion only decelerates near stroke end. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF integrated valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X175CA
- ✓ 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 SI63X175CA FAQ
Yes, the SI63X175CA is discontinued. The direct replacement is the SAI63X175CA. It shares the identical ISO 15552 mounting interface, 63mm bore, 175mm stroke, G3/8 port, and CA clevis, fitting directly into existing fixtures.
This double-acting cylinder features a G3/8 air port. It delivers 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 force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X175CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X175CA replacement — usually within 7-8 hours.