This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X150CA, 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 SI63X150CA
The AirTAC Airtac SI63 Standard Cylinder SI63X150CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X150CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X150CA
- 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 SI63X150CA
The AirTAC SI63X150CA is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore, 150 mm stroke, and CA clevis mounting. It delivers 1559 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this unit with the SAI63X150CA, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this specific SI SKU lacks the -S magnet, it cannot accept a position switch. For load holding, note that the cushion only decelerates; explore the SAIL lock or BSAI clamp-lock variants.
Airtac SI63 Standard Cylinder SI63X150CA Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X150CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X150CA |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAI63X150CA 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 SAI63X150CA 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 SI63X150CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SI63X150CA Is Used
Press Ejection
Provides 1559 N of push at 0.5 MPa to reliably eject stamped parts from a press bed using the CA clevis mount.
Package Diverting
Drives a diverter arm on a packaging line, moving cartons at speeds up to 800 mm/s without needing position sensing.
Pallet Stops
Acts as a robust pneumatic stop for heavy pallets, safely decelerating loads using its 30 mm adjustable air cushions.
Replacing the Airtac SI63 Standard Cylinder SI63X150CA with the SAI63X150CA
To replace the SI63X150CA, order the SAI63X150CA. Verify the CA clevis mounting, 150 mm stroke, 63 mm bore, and G3/8 port. This non-magnetic SKU cannot accept a sensor; if position detection is needed, select an SAI model with the S magnet suffix to use current AirTAC switches. The 63 mm bore yields 1559 N push at 0.5 MPa; sizing down to a 50 mm bore gives 982 N, while sizing up to 80 mm provides 2513 N. A plain cylinder drifts without live air, so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. The 150 mm stroke is safe from rod-bending side loads, but always guide the payload.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X150CA
- ✓ 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 SI63X150CA FAQ
Yes, the SI63X150CA is discontinued. The direct replacement is the AirTAC SAI63X150CA. It features the same ISO 15552 mounting interface, 63 mm bore, 150 mm stroke, CA clevis, and G3/8 port, fitting directly into existing fixtures.
The 63 mm bore uses a G3/8 port. It generates 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 force of 318 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X150CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X150CA replacement — usually within 7-8 hours.