This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X260TC, 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 SI63X260TC
The AirTAC Airtac SI63 Standard Cylinder SI63X260TC 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 SAI63X260TC, 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 → SAI63X260TC
- 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 SI63X260TC
The AirTAC SI63X260TC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 260mm stroke. It delivers 1559N push and 1402N pull at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X260TC, retaining the same TC trunnion mount, M16x1.5 rod thread, and output force.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches required the -S option. The SAI family also adds SAIL, SAIF, and BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X260TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X260TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X260TC |
| 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 SAI63X260TC 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 SAI63X260TC 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 SI63X260TC
| 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 SI63X260TC Is Used
Package Diverting
Drives TC-mounted routing arms on packaging lines, using the 1559N thrust at 0.5MPa to push cartons smoothly onto auxiliary chutes.
Clamp Actuation
Secures mid-weight workpieces in machining fixtures, providing repeatable 260mm travel for parts up to the 79kg vertical lift threshold.
Pallet Stopper
Acts as a pneumatic stop for incoming pallets on roller conveyors, absorbing kinetic energy via the 30mm adjustable air cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X260TC with the SAI63X260TC
To replace the SI63X260TC, order the SAI63X260TC. Verify the ISO 15552 TC trunnion interface, 63mm bore, 260mm stroke, G3/8 port (PT/G/NPT thread), and M16x1.5 rod. Because this SKU lacks the -S magnet, it cannot accept position sensors. If you need more force, the neighbouring 80mm bore yields 2513N push at 0.5MPa; if less is needed, the 50mm bore gives 982N. At 260mm stroke, factor in side-load and rod-bending forces by guiding the load to prevent premature seal wear. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X260TC
- ✓ 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 SI63X260TC FAQ
Yes, the SI63X260TC is discontinued. The direct replacement is the SAI63X260TC. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 260mm stroke, G3/8 port, TC trunnion mount, and output force, so it drops directly into existing fixtures.
The 63mm bore features a G3/8 air port and M16x1.5 rod thread. It generates 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. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X260TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X260TC replacement — usually within 7-8 hours.