This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX195, 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 SI63AX195
The AirTAC Airtac SI63 Standard Cylinder SI63AX195 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 195mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX195, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke195 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX195
- 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 SI63AX195
The AirTAC SI63AX195 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 195 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63AX195, which shares identical ISO 15552 mounting dimensions, bore, stroke, and output force. The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life.
This specific SKU includes a SUS420J2 stainless steel piston rod (the -A option) for corrosion resistance, but it lacks a magnet and cannot accept a position switch. For high-heat environments beyond the standard -20 to +70 C range, a Viton H seal option extends operation to 150 C.
Airtac SI63 Standard Cylinder SI63AX195 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX195 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX195 |
| Bore size | Ø63 mm |
| Stroke | 195 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 SAI63AX195 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 SAI63AX195 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 SI63AX195
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×195 | 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 SI63AX195 Is Used
Stainless Rod Clamping
Ideal for packaging lines where the SUS420J2 rod resists washdown moisture while providing 1559 N of clamping thrust.
Material Diversion
Provides robust 63 mm bore actuation for diverting heavy packages on conveyors, utilizing the adjustable 30 mm cushion.
Replacing the Airtac SI63 Standard Cylinder SI63AX195 with the SAI63AX195
To replace the discontinued SI63AX195, order the SAI63AX195. Confirm the ISO 15552 mounting interface, the 63 mm bore, the 195 mm stroke, and the G3/8 port (available in PT, G, or NPT threads). This unit uses the -A SUS420J2 stainless rod and has no magnet (-S), meaning it cannot support legacy CS1-B or DS1-B sensors. If sensing is required, specify an SAI63X195S instead. For sizing, the neighboring 50 mm bore yields 982 N push at 0.5 MPa, while the 80 mm bore provides 2513 N. Note that a plain cylinder drifts on air loss; the cushion only decelerates at stroke end. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants. Since the 195 mm stroke is under 300 mm, severe rod-bending side loads are less critical than on longer strokes, but proper guiding remains best practice.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX195
- ✓ 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 SI63AX195 FAQ
Yes, the SI63AX195 is discontinued. The direct replacement is the SAI63AX195. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 195 mm stroke, G3/8 port, and mounting interface.
It features a G3/8 air port and delivers a push force of 1559 N and pull force of 1402 N at 0.5 MPa. At 0.7 MPa it pushes 2182 N, and 2805 N at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX195
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX195 replacement — usually within 7-8 hours.