This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X95, 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 SI63X95
The AirTAC Airtac SI63 Standard Cylinder SI63X95 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 95mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X95, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke95 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X95
- 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 SI63X95
The AirTAC SI63X95 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 95 mm stroke. Delivering 1559 N push force at 0.5 MPa, it is replaced by the SAI63X95 direct. The SAI uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure, and adds SAIL, SAIF and BSAI variants the SI lacked.
This non-magnet SKU cannot take a sensor. The G3/8 port is fixed by the bore. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI63 Standard Cylinder SI63X95 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X95 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X95 |
| Bore size | Ø63 mm |
| Stroke | 95 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 SAI63X95 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 SAI63X95 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 SI63X95
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×95 | 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 SI63X95 Is Used
Clamp Actuation
Provides 1559 N of push force at 0.5 MPa to secure heavy workpieces during machining operations.
Package Diverting
Drives diverter arms along packaging lines with a 95 mm stroke and 30-800 mm/s operating speed.
Pallet Stops
Acts as a robust pneumatic stop for medium-weight pallets using its 1402 N pull force at 0.5 MPa.
Replacing the Airtac SI63 Standard Cylinder SI63X95 with the SAI63X95
To replace the SI63X95, order the SAI63X95 keeping the exact 63 mm bore, 95 mm stroke, G3/8 port, M16x1.5 rod thread and ISO 15552 mounting interface. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI if position sensing is required. If sizing up or down, neighbouring bores are 50 mm and 80 mm. At 0.5 MPa the 50 mm yields 982 N push, while the 80 mm provides 2513 N. Note that a plain cylinder drifts on air loss; for load holding, select the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve. The 30 mm adjustable air cushions decelerate near stroke end but do not brake.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X95
- ✓ 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 SI63X95 FAQ
Yes, the SI63X95 is discontinued. The direct replacement is the AirTAC SAI63X95. It shares the identical ISO 15552 mounting interface, 63 mm bore, 95 mm stroke, output force, G3/8 port and mounting accessories, fitting existing fixtures perfectly.
The 63 mm bore features a G3/8 port, M16x1.5 rod thread and 30 mm cushions. Force ratings are: push 1559 N and pull 1402 N at 0.5 MPa, push 2182 N at 0.7 MPa, and a maximum theoretical force of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X95
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X95 replacement — usually within 7-8 hours.