This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63BX95, 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 SI63BX95
The AirTAC Airtac SI63 Standard Cylinder SI63BX95 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 SAI63BX95, 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 → SAI63BX95
- 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 SI63BX95
The AirTAC SI63BX95 is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 95mm stroke. Built with an extruded aluminum barrel, it delivers 1559 N push and 1402 N pull at 0.5 MPa, operating at 30-800 mm/s through a G3/8 port. This specific SKU features a SUS304 stainless steel rod for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors.
You must replace it with the direct replacement SAI63BX95. It shares the exact ISO 15552 mounting interface, M16x1.5 rod thread, and force ratings. The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note that a plain cylinder drifts without air; use a SAIL lock or external check valve to hold loads.
Airtac SI63 Standard Cylinder SI63BX95 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63BX95 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63BX95 |
| 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 SAI63BX95 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 SAI63BX95 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 SI63BX95
| 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 SI63BX95 Is Used
Stainless Rod Clamping
Ideal for packaging machinery where the SUS304 rod resists washdown corrosion while providing 1559 N of clamping thrust.
Product Diverting
Delivers reliable diverting force on standard conveyors, moving moderate loads at cycle speeds up to 800 mm/s.
Vertical Lift Stops
Handles vertical lifting tasks up to 79 kg safely, though an external rod lock is required to prevent drift on air loss.
Replacing the Airtac SI63 Standard Cylinder SI63BX95 with the SAI63BX95
To replace the SI63BX95, order the SAI63BX95, confirming the ISO 15552 interface, 63mm bore, 95mm stroke, G3/8 port, and SUS304 rod. Because this SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; add the magnet if sensing is needed. For load holding, remember the air cushion only decelerates; it does not lock. Use an external pilot check valve or explore the SAIL air-released lock or BSAI clamp-lock variants. The SAIF variant with a built-in 4M valve is also available for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63BX95
- ✓ 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 SI63BX95 FAQ
Yes, the SI63BX95 is discontinued. The direct replacement is the SAI63BX95. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 95mm stroke, G3/8 port, and mounting interface, but features an upgraded two Y-shaped one-way piston seal for longer life.
This double-acting cylinder uses a G3/8 air port. The thrust 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 maximum of 318 kgf at 1.0 MPa. It operates at speeds of 30-800 mm/s.
Request a Quote for the SAI63BX95
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63BX95 replacement — usually within 7-8 hours.