This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX190, 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 SI63BX190
The AirTAC Airtac SI63 Standard Cylinder SI63BX190 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 190mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63BX190, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke190 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63BX190
- 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 SI63BX190
The AirTAC SI63BX190 is a discontinued double-acting ISO 15552 profile cylinder featuring a 63mm bore, 190mm stroke, and a SUS304 stainless steel rod. Delivering 1559N push force at 0.5MPa, its direct replacement is the SAI63BX190, which shares the exact G3/8 port, M16x1.5 thread, and mounting interface. The SAI upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
Note this SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. The cushion only decelerates; use a pilot check valve or SAIL lock variant to hold loads.
Airtac SI63 Standard Cylinder SI63BX190 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX190 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX190 |
| Bore size | Ø63 mm |
| Stroke | 190 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 SAI63BX190 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 SAI63BX190 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 SI63BX190
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×190 | 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 SI63BX190 Is Used
Stainless Rod Diverters
Actuators with SUS304 rods excel in mildly corrosive washdown environments, pushing 79kg vertical loads or diverting packages along handling lines.
Press Ejection Systems
Generates 1559N of push force at 0.5MPa to reliably eject formed parts from machinery, utilizing adjustable air cushions to soften end-of-stroke impact.
Pallet Positioning Stops
Halts heavy pallets on conveyors using robust 63mm bore thrust, requiring an external pilot check valve to prevent drift when air pressure is removed.
Replacing the Airtac SI63 Standard Cylinder SI63BX190 with the SAI63BX190
To replace the SI63BX190, order the SAI63BX190. It is dimensionally interchangeable per ISO 15552, retaining the 63mm bore, 190mm stroke, 1559N force at 0.5MPa, G3/8 port, and SUS304 rod. Confirm your mounting accessory (LB, FA, TC) and thread type (PT/G/NPT). Because this SKU lacks a magnet, it cannot support position sensing; order an SAI63BX190S if a switch is required. For load holding, a plain cylinder drifts on air loss—use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. If sizing up or down, neighbouring bores are 50mm (982N push) and 80mm (2513N push) at 0.5MPa. At 190mm, side-load risk is low, but ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX190
- ✓ 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 SI63BX190 FAQ
Yes, the SI63BX190 is discontinued. The direct replacement is the SAI63BX190. It shares the identical ISO 15552 mounting interface, 63mm bore, 190mm stroke, G3/8 port, and SUS304 stainless rod, fitting existing fixtures perfectly.
The 63mm bore features a G3/8 air port and M16x1.5 rod thread. It delivers 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 SAI63BX190
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX190 replacement — usually within 7-8 hours.