This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X600TC, 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 SI63X600TC
The AirTAC Airtac SI63 Standard Cylinder SI63X600TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X600TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X600TC
- 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 SI63X600TC
The AirTAC SI63X600TC is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, delivering 1559 N push force at 0.5 MPa. Because this SKU lacks the -S magnet, it cannot accept a position sensor. The direct replacement is the SAI63X600TC, sharing the exact G3/8 port, M16x1.5 rod thread, 600 mm stroke and TC trunnion mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. If your fixture needs positive holding, note that the standard cushion only decelerates; you must use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X600TC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X600TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X600TC |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAI63X600TC 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 SAI63X600TC 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 SI63X600TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SI63X600TC Is Used
Long-Stroke Material Transfer
Drives a 600 mm stroke to push heavy pallets between conveyor lines, utilizing the 1559 N push force at 0.5 MPa to overcome friction.
Large Fixture Actuation
Indexes a machining fixture using the TC trunnion mount to accommodate pivot, moving heavy clamps with 1402 N pull force.
Replacing the Airtac SI63 Standard Cylinder SI63X600TC with the SAI63X600TC
To replace the SI63X600TC, order the SAI63X600TC and confirm the ISO 15552 TC trunnion interface, 63 mm bore, 600 mm stroke, G3/8 port and double-acting operation. This original SKU has no magnet, so it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, specify an SAI with the S magnet option. At 0.5 MPa the 63 mm bore yields 1559 N push and 1402 N pull; sizing down to a 50 mm bore drops push to 982 N, while sizing up to 80 mm increases it to 2513 N. Because the 600 mm stroke is long, use an external guide to prevent rod bending and side-load damage. For load holding on air loss, select the SAIL or BSAI lock variant instead of relying on the cushion.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X600TC
- ✓ 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 SI63X600TC FAQ
Yes, the SI63X600TC is discontinued. The direct replacement is the SAI63X600TC. It is dimensionally interchangeable per ISO 15552, matching the 63 mm bore, 600 mm stroke, G3/8 port, TC mount and output force, so it fits existing fixtures directly.
This double-acting cylinder uses a G3/8 air port. The thrust ratings are 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X600TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X600TC replacement — usually within 7-8 hours.