This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X295SN, 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 SI63X295SN
The AirTAC Airtac SI63 Standard Cylinder SI63X295SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 295mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X295SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke295 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X295SN
- 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 SI63X295SN
The AirTAC SI63X295SN is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 295 mm stroke. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI63X295SN, matching the interface, bore, stroke, force and mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. The NBR seal handles -20 to +70 C, while Viton H extends to 150 C. The -S magnet works with CS1-B/DS1-B switches.
Airtac SI63 Standard Cylinder SI63X295SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X295SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X295SN |
| Bore size | Ø63 mm |
| Stroke | 295 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 SAI63X295SN 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 SAI63X295SN 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 SI63X295SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×295 | 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 SI63X295SN Is Used
Package Diverting
Pushes cartons off a main belt line using 1559 N thrust, with the 295 mm stroke clearing guide rails.
Pallet Stopper
Halts inbound pallets at a packing cell, using the adjustable cushions to soften end impacts.
Replacing the Airtac SI63 Standard Cylinder SI63X295SN with the SAI63X295SN
To replace the SI63X295SN, order the SAI63X295SN direct. Verify the ISO 15552 mounting interface, 295 mm stroke, G3/8 port and M16x1.5 rod thread. The -S magnet enables CS1-B/DS1-B sensors, while the -N seal is NBR. If you need more force, the 80 mm bore yields 2513 N at 0.5 MPa; if less, the 50 mm bore yields 982 N. For 295 mm strokes, use a guide to prevent rod bending and side loads. The air cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X295SN
- ✓ 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 SI63X295SN FAQ
Yes, the SI63X295SN is discontinued. The direct replacement is the SAI63X295SN, which matches the ISO 15552 mounting interface, 63 mm bore, 295 mm stroke, force, and G3/8 port.
The 63 mm bore uses a G3/8 port. It generates 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X295SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X295SN replacement — usually within 7-8 hours.