This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X260H, 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 SI63X260H
The AirTAC Airtac SI63 Standard Cylinder SI63X260H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 260mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X260H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X260H
- 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 SI63X260H
The AirTAC SI63X260H is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 260 mm stroke. Delivering 1559 N push force at 0.5 MPa, it features a G3/8 port and a high-temperature Viton H seal (0-150 C). The direct replacement is the SAI63X260H, matching the interface, bore, stroke, force and mounting exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SKU lacks a magnet, it cannot accept position sensors. The SAI family also adds SAIL, SAIF and BSAI lock variants absent from the SI line.
Airtac SI63 Standard Cylinder SI63X260H Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X260H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X260H |
| Bore size | Ø63 mm |
| Stroke | 260 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 SAI63X260H 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 SAI63X260H 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 SI63X260H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×260 | 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 SI63X260H Is Used
Hot Stamp Press
Drives a 1559 N clamping fixture at 0.5 MPa, utilizing the Viton H seal to withstand 150 C ambient heat near heated platens.
Divert Arm Actuator
Provides 260 mm of travel to swing heavy routing gates, safely handling a 935 N dynamic load without exceeding structural limits.
Replacing the Airtac SI63 Standard Cylinder SI63X260H with the SAI63X260H
To replace the SI63X260H, order the SAI63X260H. Verify the ISO 15552 mounting interface, 63 mm bore, 260 mm stroke, G3/8 port (PT/G/NPT thread options) and your existing mounting accessory. This non-magnet version cannot take a sensor; if sensing is needed, specify an SAI with the magnet option and use current AirTAC switches. For sizing, the 63 mm bore yields 1559 N push at 0.5 MPa; step down to a 50 mm bore for 982 N, or up to an 80 mm bore for 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. With a 260 mm stroke, ensure guide support to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X260H
- ✓ 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 SI63X260H FAQ
Yes, the SI63X260H is discontinued. The direct replacement is the SAI63X260H. It is dimensionally interchangeable per ISO 15552, retaining the same 63 mm bore, 260 mm stroke, 1559 N force, G3/8 port and mounting interface.
The 63 mm bore features a G3/8 port and provides 1559 N push / 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. It operates at 30-800 mm/s with a 30 mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X260H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X260H replacement — usually within 7-8 hours.