This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X65TC, 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 SI63X65TC
The AirTAC Airtac SI63 Standard Cylinder SI63X65TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 65mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X65TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke65 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X65TC
- 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 SI63X65TC
The AirTAC SI63X65TC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 65mm stroke. Delivering 1559 N push force at 0.5 MPa, it is replaced by the direct replacement SAI63X65TC. This successor shares the exact TC trunnion mounting, G3/8 port, and output force, fitting existing fixtures seamlessly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. The SAI family also adds SAIL, SAIF, and BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X65TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X65TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X65TC |
| Bore size | Ø63 mm |
| Stroke | 65 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 SAI63X65TC 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 SAI63X65TC 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 SI63X65TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×65 | 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 SI63X65TC Is Used
Trunnion-Mounted Forming
Ideal for mid-force stamping or forming stations where the ISO 15552 TC trunnion interface accommodates angular alignment during the 65mm travel.
Package Diverting
Provides robust 1559 N push at 0.5 MPa to deflect heavy goods on sorting lines, utilizing the short 65mm stroke for rapid cycling.
Pallet Stops
Acts as a high-strength end-stop for pallets, with the 63mm bore absorbing impacts while the air cushion decelerates the load.
Replacing the Airtac SI63 Standard Cylinder SI63X65TC with the SAI63X65TC
To replace the SI63X65TC, order the SAI63X65TC. Verify the ISO 15552 TC trunnion mount, 63mm bore, 65mm stroke, and G3/8 port. Because this specific SKU lacks the -S magnet, it cannot support position sensing; if switches are needed, select an SAI63X65S equivalent. For sizing, the 63mm bore yields 1559 N push at 0.5 MPa; if less force is needed, a 50mm bore gives 982 N, while an 80mm bore provides 2513 N. A plain cylinder drifts on air loss, so for load holding consider an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X65TC
- ✓ 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 SI63X65TC FAQ
Yes, the SI63X65TC is discontinued. The direct replacement is the SAI63X65TC. It shares the identical ISO 15552 mounting interface, 63mm bore, 65mm stroke, G3/8 port, and output force, fitting directly into existing TC trunnion fixtures.
This double-acting 63mm bore cylinder uses a G3/8 air port. It generates 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, and 2805 N push at 0.9 MPa. The theoretical maximum force is 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X65TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X65TC replacement — usually within 7-8 hours.