This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX200, 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 SI63BX200
The AirTAC Airtac SI63 Standard Cylinder SI63BX200 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 SAI63BX200, 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 → SAI63BX200
- 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 SI63BX200
The AirTAC SI63BX200 is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless steel piston rod. It delivers 1559 N push force at 0.5 MPa through its 63 mm bore and G3/8 port. The direct replacement is the SAI63BX200, matching the stroke, force, and ISO 15552 mounting interface.
Upgrading to the SAI brings a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This no-magnet SKU cannot take a sensor.
Airtac SI63 Standard Cylinder SI63BX200 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX200 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX200 |
| 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 SAI63BX200 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 SAI63BX200 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 SI63BX200
| 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 SI63BX200 Is Used
Stainless Rod Clamping
Ideal for packaging lines requiring corrosion resistance, using the SUS304 rod to clamp materials with a safe 935 N working load.
Product Diverting
Diverts medium-weight goods along conveyors, utilizing the 200 mm stroke and 79 kg vertical lift capacity for reliable routing.
Machine Guard Actuation
Drives safety guards and doors on automated machinery, benefiting from the ISO 15552 direct dimensions during maintenance upgrades.
Replacing the Airtac SI63 Standard Cylinder SI63BX200 with the SAI63BX200
To replace the SI63BX200, order the SAI63BX200. Verify the ISO 15552 mounting interface, 63 mm bore, 200 mm stroke, G3/8 port (PT/G/NPT thread), and your specific mounting accessory. This unit has a SUS304 stainless rod and no magnet, meaning it cannot accept a CS1-B/DS1-B sensor. If you need position sensing, select an SAI equivalent with a magnet. For load holding, note that a plain cylinder drifts on air loss; the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. If sizing up or down, neighbouring bores are 50 mm (982 N push @0.5 MPa) and 80 mm (2513 N push @0.5 MPa).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX200
- ✓ 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 SI63BX200 FAQ
Yes, the SI63BX200 is discontinued. The direct replacement is the SAI63BX200. It offers the same ISO 15552 mounting interface, 63 mm bore, 200 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
It features a G3/8 air port. The force ratings are 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 max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63BX200
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX200 replacement — usually within 7-8 hours.