This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X115TC, 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 SI63X115TC
The AirTAC SI63 Standard Cylinder SI63X115TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 115mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X115TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X115TC
- 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 SI63X115TC
The AirTAC SI63X115TC is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 115 mm stroke. It delivers 1559 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI63X115TC, which preserves the exact TC trunnion mounting, M16x1.5 rod thread, and output force for existing fixtures.
This SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this specific SI SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. For high heat, Viton H seals raise the operating range to 0-150 C.
Airtac SI63 Standard Cylinder SI63X115TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X115TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X115TC |
| Bore size | Ø63 mm |
| Stroke | 115 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 SAI63X115TC 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 SAI63X115TC 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 SI63X115TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 SI63X115TC Is Used
Mid-Tonnage Pressing
Applies the 1559 N @0.5 MPa thrust for seating bearings or light stamping tasks on automated lines.
TC Trunnion Diverters
Leverages the ISO 15552 TC trunnion mount for pivoting conveyor gating and package routing arms.
Replacing the Airtac SI63 Standard Cylinder SI63X115TC with the SAI63X115TC
To replace the SI63X115TC, order the SAI63X115TC and confirm the ISO 15552 TC trunnion interface, 115 mm stroke, G3/8 port, and M16x1.5 thread. Because this SKU has no magnet, you cannot mount position switches; if sensing is needed, order an SAI with the S suffix for current AirTAC switches. Sizing both ways: a 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N @0.5 MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X115TC
- ✓ 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 SI63X115TC FAQ
Yes, the SI63X115TC is discontinued. The direct replacement is the SAI63X115TC. It is dimensionally interchangeable per ISO 15552, maintaining the same 63 mm bore, 115 mm stroke, G3/8 port, TC mounting, and force output.
The 63 mm bore uses a G3/8 air port. Force output is 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 maximum of 318 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X115TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X115TC replacement — usually within 7-8 hours.