This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X150H, 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 SI63X150H
The AirTAC Airtac SI63 Standard Cylinder SI63X150H 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 SAI63X150H, 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 → SAI63X150H
- 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 SI63X150H
The AirTAC SI63X150H is a discontinued double-acting ISO 15552 profile cylinder with a 63 mm bore and 150 mm stroke. Delivering 1559 N push force at 0.5 MPa through a G3/8 port, it is replaced by the direct replacement SAI63X150H. This SKU lacks a magnet and cannot accept a sensor, while the -H seal specifies Viton FKM for 0-150 C high-temperature environments.
The SAI63X150H upgrade retains the exact ISO 15552 mounting interface but introduces a two Y-shaped one-way piston seal for low start-up pressure. For load holding, note that standard cylinders drift on air loss—the cushion only decelerates—so consider the SAIL or BSAI lock variants.
Airtac SI63 Standard Cylinder SI63X150H Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X150H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X150H |
| 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 SAI63X150H 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 SAI63X150H 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 SI63X150H
| 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 SI63X150H Is Used
Hot Stamp Presses
Drives 79 kg tooling platens in 0-150 C thermal forming equipment, utilizing the Viton FKM -H seal to withstand radiant heat without degrading.
High-Temp Diverters
Actuates sorting gates on warm material conveyors where 1559 N push force reliably redirects heavy billets or molded components.
Mold Ejection Systems
Ejects dense cast parts from heated molds, benefiting from the 30 mm adjustable air cushions to decelerate the 20 mm rod at stroke ends.
Replacing the Airtac SI63 Standard Cylinder SI63X150H with the SAI63X150H
To replace the discontinued SI63X150H, order the SAI63X150H, verifying the ISO 15552 interface, 150 mm stroke, G3/8 port, and M16x1.5 rod thread. Because this SKU has no magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if position feedback is needed. Sizing both ways: a 50 mm bore yields 982 N push @0.5 MPa, while an 80 mm bore yields 2513 N. For load holding on air loss, add an external pilot check valve or rod lock, as the cushion only decelerates. At 150 mm stroke, rod bending stress is low, but always guide external loads to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X150H
- ✓ 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 SI63X150H FAQ
Yes, the SI63X150H is discontinued. The direct replacement is the SAI63X150H. It shares the same ISO 15552 mounting interface, 63 mm bore, 150 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly while upgrading the piston seal.
The 63 mm bore features a G3/8 air port and M16x1.5 rod thread. Force output is 1559 N push and 1402 N pull at 0.5 MPa, 2182 N push at 0.7 MPa, 2805 N at 0.9 MPa, and a theoretical max of 318 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X150H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X150H replacement — usually within 7-8 hours.