This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X1600S, 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 SI63X1600S
The AirTAC Airtac SI63 Standard Cylinder SI63X1600S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 1600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X1600S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke1600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X1600S
- 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 SI63X1600S
The AirTAC SI63X1600S is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 1600 mm stroke. Generating 1559 N push force at 0.5 MPa, it is replaced directly by the SAI63X1600S. This direct upgrade shares the exact ISO 15552 mounting interface, G3/8 port, and M16x1.5 rod thread. Note that 1600 mm exceeds the 1500 mm standard stroke limit, making this a non-standard, made-to-order configuration.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces SAIL, SAIF, and BSAI lock variants absent in the legacy SI line. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI63 Standard Cylinder SI63X1600S Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X1600S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X1600S |
| Bore size | Ø63 mm |
| Stroke | 1600 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 SAI63X1600S 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 SAI63X1600S 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 SI63X1600S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×1600 | 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 SI63X1600S Is Used
Long-Stroke Material Transfer
Pushes heavy pallets between conveyor lanes over a 1600 mm travel distance, utilizing the 1559 N push force at 0.5 MPa with external guides to prevent rod sag.
High-Bay Pusher Actuation
Acts as a diverter arm in automated storage systems, where the 79 kg vertical lift capacity and long stroke handle goods retrieval tasks reliably.
Large Door / Guard Positioning
Drives heavy machine safety guards across a wide span, taking advantage of the adjustable 30 mm air cushions at both ends to decelerate the moving mass smoothly.
Replacing the Airtac SI63 Standard Cylinder SI63X1600S with the SAI63X1600S
To replace the SI63X1600S, order the SAI63X1600S. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port, and the magnet requirement. Because 1600 mm exceeds the 1500 mm standard maximum, expect a made-to-order lead time. At 0.5 MPa, the 63 mm bore yields 1559 N push / 1402 N pull; sizing down, a 50 mm bore offers 982 N push, while sizing up, an 80 mm bore provides 2513 N push. For this 1600 mm stroke, an external guide is strongly recommended to prevent rod bending and excessive side loads. A plain cylinder drifts on air loss; for load holding, specify an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X1600S
- ✓ 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 SI63X1600S FAQ
Yes, the SI63X1600S is discontinued. The direct replacement is the SAI63X1600S. It shares the same ISO 15552 mounting interface, 63 mm bore, 1600 mm stroke, output force, and G3/8 port, fitting directly into existing fixtures.
The 63 mm bore provides 1559 N push and 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. Operating speed is 30-800 mm/s. It uses a G3/8 port and a 20 mm rod.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X1600S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X1600S replacement — usually within 7-8 hours.