This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X600N, 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 SI63X600N
The AirTAC SI63 Standard Cylinder SI63X600N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X600N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X600N
- 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 SI63X600N
The AirTAC SI63X600N is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 600 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63X600N, matching the interface, bore, stroke, force and mounting exactly.
This NBR-sealed unit lacks a magnet, so it cannot accept a sensor. The SAI upgrade features a two-piece Y-shaped piston seal for low start-up pressure. For load holding, use the SAIL lock or a pilot check valve, as cushions only decelerate.
Airtac SI63 Standard Cylinder SI63X600N Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X600N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X600N |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAI63X600N 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 SAI63X600N 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 SI63X600N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SI63X600N Is Used
Long-Stroke Diversion
Pushes packages across a 600 mm transfer gap with 1559 N force, utilizing the adjustable end cushions to decelerate the carriage smoothly.
Press Ejection
Ejects molded parts from a press bed, taking advantage of the 1402 N pull force at 0.5 MPa to retract the 20 mm rod fully.
Replacing the Airtac SI63 Standard Cylinder SI63X600N with the SAI63X600N
To replace the SI63X600N, order the SAI63X600N to keep the exact ISO 15552 mounting dimensions, 63 mm bore, 600 mm stroke, and G3/8 port. This non-magnetic SKU cannot fit a sensor; if position detection is needed, select an SAI model with the -S magnet option and CS1-B/DS1-B switches. The NBR seal operates from -20 to +70 C; for higher heat, choose the Viton H seal. For sizing, the 63 mm bore gives 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. Because the 600 mm stroke is long, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts without air; for load holding on pressure loss, specify the SAIL or BSAI lock variant, or add an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X600N
- ✓ 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 SI63X600N FAQ
Yes, the SI63X600N is discontinued. The direct replacement is the AirTAC SAI63X600N. It features the same ISO 15552 mounting interface, 63 mm bore, 600 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The G3/8 port feeds a 20 mm rod. At 0.5 MPa it provides 1559 N push and 1402 N pull. At 0.7 MPa push is 2182 N, and at 0.9 MPa it is 2805 N. The theoretical maximum is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X600N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X600N replacement — usually within 7-8 hours.