This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X310, 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 SI63X310
The AirTAC Airtac SI63 Standard Cylinder SI63X310 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 310mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X310, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke310 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X310
- 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 SI63X310
The AirTAC SI63X310 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 310 mm stroke. Delivering 1559 N push at 0.5 MPa through a G3/8 port, it is replaced by the SAI63X310. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force and port size.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI63 Standard Cylinder SI63X310 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X310 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X310 |
| Bore size | Ø63 mm |
| Stroke | 310 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 SAI63X310 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 SAI63X310 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 SI63X310
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×310 | 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 SI63X310 Is Used
Pallet Diversion
Pushes heavy pallets sideways at 0.5 MPa using 1559 N of thrust, with the 310 mm stroke clearing the main conveyor belt.
Press Ejection
Ejects formed metal parts from a press bed, relying on the 30 mm adjustable air cushions to decelerate the rod smoothly.
Replacing the Airtac SI63 Standard Cylinder SI63X310 with the SAI63X310
To replace the SI63X310, order the SAI63X310 direct. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC) and the G3/8 port. Because this specific SKU has no -S magnet, it cannot support position sensing; if detection is needed, specify a magnet-equipped SAI. The 63 mm bore yields 1559 N push at 0.5 MPa; sizing down, a 50 mm bore offers 982 N, while an 80 mm bore provides 2513 N. For the 310 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X310
- ✓ 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 SI63X310 FAQ
Yes, the SI63X310 is discontinued. The direct replacement is the SAI63X310, which shares the identical ISO 15552 mounting interface, 63 mm bore, 310 mm stroke, output force, G3/8 port and mounting accessories.
The 63 mm bore uses a G3/8 port. Force output is 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and a theoretical maximum of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X310
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X310 replacement — usually within 7-8 hours.