This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X160STC, 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 SI63X160STC
The AirTAC Airtac SI63 Standard Cylinder SI63X160STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 160mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X160STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke160 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X160STC
- 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 SI63X160STC
The AirTAC SI63X160STC is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 160mm stroke, delivering 1559N push force at 0.5MPa. It features a G3/8 port, M16x1.5 rod thread, and a built-in magnet for CS1-B/DS1-B switches. The direct replacement is the SAI63X160STC, retaining the exact interface, force, and TC trunnion mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that a standard cylinder drifts on air loss as cushions only decelerate; use an external rod lock or pilot check valve.
Airtac SI63 Standard Cylinder SI63X160STC Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X160STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X160STC |
| Bore size | Ø63 mm |
| Stroke | 160 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 SAI63X160STC 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 SAI63X160STC 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 SI63X160STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×160 | 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 SI63X160STC Is Used
Clamp Actuation
Provides 1559N of push force at 0.5MPa to secure heavy workpieces during machining operations.
Package Diversion
Uses the 160mm stroke to push goods smoothly between adjacent conveyor lanes at high speed.
Pallet Stopping
Halts pallets on a roller line using the TC trunnion mount to absorb deceleration forces.
Replacing the Airtac SI63 Standard Cylinder SI63X160STC with the SAI63X160STC
To replace the SI63X160STC, order the SAI63X160STC. Confirm the ISO 15552 TC trunnion mounting interface, 63mm bore, 160mm stroke, G3/8 port (PT/G/NPT thread options), and the -S magnet for current AirTAC switches. Sizing both ways: a 50mm bore yields 982N push at 0.5MPa, while an 80mm bore yields 2513N. For this 160mm stroke, ensure guide alignment to prevent rod-bending side loads. If you need positive load holding on air loss, step up to the SAIL or BSAI lock variants, or add a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X160STC
- ✓ 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 SI63X160STC FAQ
Yes, the SI63X160STC is discontinued. The direct replacement is the SAI63X160STC. It is dimensionally interchangeable per ISO 15552, matching the bore, stroke, force, G3/8 port, and TC mounting interface.
The 63mm bore features a G3/8 port. It delivers 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X160STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X160STC replacement — usually within 7-8 hours.