This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X262SN, 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 SI63X262SN
The AirTAC Airtac SI63 Standard Cylinder SI63X262SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 262mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X262SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke262 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X262SN
- 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 SI63X262SN
The AirTAC SI63X262SN is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 262mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa. As an end-of-life unit, it must be replaced by the SAI63X262SN, a direct sharing the same interface, G3/8 port, and M16x1.5 rod thread. The 262mm stroke is non-standard.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The -S magnet works with CS1-B/DS1-B switches, while the -N NBR seal handles -20 to +70C (Viton H raises this to 150C). The SAI family also adds SAIL, SAIF, and BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X262SN Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X262SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X262SN |
| Bore size | Ø63 mm |
| Stroke | 262 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 SAI63X262SN 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 SAI63X262SN 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 SI63X262SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×262 | 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 SI63X262SN Is Used
Mid-Tonnage Clamping
Holds workpieces securely in CNC machining fixtures using 1559N of push force at 0.5MPa.
Package Diversion
Actuates sorting gates and pushers along packaging lines with a 262mm non-standard travel distance.
Pallet Stops
Controls pallet movement on roller conveyors, utilizing the 79kg safe vertical lift capacity.
Replacing the Airtac SI63 Standard Cylinder SI63X262SN with the SAI63X262SN
To replace the SI63X262SN, order the SAI63X262SN. Confirm the ISO 15552 mounting interface, G3/8 port, M16x1.5 thread, and mounting accessory (LB, FA, TC, etc.). The -S magnet enables CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. For sizing, the 63mm bore yields 1559N push at 0.5MPa; dropping to a 50mm bore gives 982N, while an 80mm bore provides 2513N. Because the 262mm stroke is non-standard and exceeds 300mm limits, add external guide rods to prevent rod bending under side loads. A plain cylinder drifts without air; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X262SN
- ✓ 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 SI63X262SN FAQ
Yes, the SI63X262SN is discontinued. The direct replacement is the AirTAC SAI63X262SN. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 262mm stroke, G3/8 port, and mounting interface.
This double-acting cylinder operates at 30-800 mm/s. Force ratings are: 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, and a theoretical max of 318kgf at 1.0MPa. It uses a G3/8 port and a 20mm rod.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X262SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X262SN replacement — usually within 7-8 hours.