This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X48, 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 SI63X48
The AirTAC Airtac SI63 Standard Cylinder SI63X48 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 48mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X48, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke48 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X48
- 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 SI63X48
The AirTAC SI63X48 is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 48 mm stroke. It delivers 1559 N push force at 0.5 MPa and uses a G3/8 air port. The direct replacement is the SAI63X48, which shares the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting accessories.
The 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, unlike the CS1-B/DS1-B compatible -S versions.
Airtac SI63 Standard Cylinder SI63X48 Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X48 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X48 |
| Bore size | Ø63 mm |
| Stroke | 48 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 SAI63X48 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 SAI63X48 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 SI63X48
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×48 | 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 SI63X48 Is Used
Mid-Force Clamping
Secures heavy workpieces in machining fixtures using its 1559 N push force at 0.5 MPa.
Short-Stroke Diversion
Actuates routing gates on packaging lines where a compact 48 mm stroke is required.
Product Ejection
Pushes finished goods off assembly stations with a safe 935 N working load.
Replacing the Airtac SI63 Standard Cylinder SI63X48 with the SAI63X48
To replace the discontinued SI63X48, order the SAI63X48 direct: verify the ISO 15552 interface, 63 mm bore, 48 mm stroke, G3/8 port (PT/G/NPT thread options), and mounting accessory. Because this SKU lacks the -S magnet, it cannot accept position sensors; order the -S variant if CS1-B/DS1-B switches are needed. For sizing both ways, a 50 mm bore yields 982 N push at 0.5 MPa, while an 80 mm bore yields 2513 N. Remember 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 → SAI63X48
- ✓ 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 SI63X48 FAQ
Yes, the SI63X48 is discontinued. The direct replacement is the SAI63X48, which shares the same ISO 15552 mounting interface, 63 mm bore, 48 mm stroke, output force, G3/8 port and accessories.
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 at 0.9 MPa, and a theoretical max of 318 kgf at 1.0 MPa.
Request a Quote for the SAI63X48
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X48 replacement — usually within 7-8 hours.