This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63AX200, 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 SI63AX200
The AirTAC Airtac SI63 Standard Cylinder SI63AX200 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 200mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63AX200, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke200 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63AX200
- 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 SI63AX200
The AirTAC SI63AX200 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 200mm stroke. It features a SUS420J2 stainless piston rod and delivers 1559N push force at 0.5MPa through its G3/8 port. The direct replacement is the SAI63AX200, matching the exact bore, stroke, force, port and mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SI SKU lacks a magnet, it cannot accept a position switch.
Airtac SI63 Standard Cylinder SI63AX200 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63AX200 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63AX200 |
| Bore size | Ø63 mm |
| Stroke | 200 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 SAI63AX200 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 SAI63AX200 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 SI63AX200
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×200 | 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 SI63AX200 Is Used
Stainless Rod Actuation
Leverages the SUS420J2 rod for mid-force clamping tasks in washdown environments where mild corrosion resistance is required.
Package Diverting
Provides robust 1559N push at 0.5MPa to reliably divert heavy goods across 200mm of travel on sorting lines.
Pallet Positioning
Uses its 79kg vertical lift capacity to lift and index standard pallets into machining fixtures before processing.
Replacing the Airtac SI63 Standard Cylinder SI63AX200 with the SAI63AX200
To replace the SI63AX200, order the SAI63AX200 and confirm the ISO 15552 mounting interface, 63mm bore, 200mm stroke, G3/8 port and SUS420J2 rod. Since this SKU has no magnet, you cannot mount a sensor; if sensing is needed, specify an SAI with the S option. For sizing down, a 50mm bore gives 982N push at 0.5MPa; sizing up, an 80mm bore yields 2513N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63AX200
- ✓ 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 SI63AX200 FAQ
Yes, the SI63AX200 is discontinued. The direct replacement is the SAI63AX200. It shares the identical ISO 15552 mounting interface, 63mm bore, 200mm stroke, G3/8 port and output force, fitting existing fixtures perfectly.
This 63mm bore cylinder uses a G3/8 port. It generates 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical maximum of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63AX200
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63AX200 replacement — usually within 7-8 hours.