This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X40SH, 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 SI63X40SH
The AirTAC Airtac SI63 Standard Cylinder SI63X40SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 40mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X40SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X40SH
- 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 SI63X40SH
The AirTAC SI63X40SH is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 40mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X40SH, matching the interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It adds SAIL, SAIF, and BSAI variants the SI lacked. With the -H Viton seal, temperature extends to 150C. The -S magnet works with CS1-B/DS1-B switches.
Airtac SI63 Standard Cylinder SI63X40SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X40SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X40SH |
| Bore size | Ø63 mm |
| Stroke | 40 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 SAI63X40SH 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 SAI63X40SH 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 SI63X40SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×40 | 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 SI63X40SH Is Used
Short-Stroke Clamping
Ideal for holding parts in machining fixtures where a compact 40mm stroke and 1559N force securely lock components in place.
Diversion Pusher
Provides robust lateral pushing power on packaging lines to redirect products, utilizing the 63mm bore's 1402N pull force for retraction.
Pallet Stopper Gate
Acts as a high-force stop mechanism in material handling systems, withstanding impacts while maintaining position via ISO 15552 mounts.
Replacing the Airtac SI63 Standard Cylinder SI63X40SH with the SAI63X40SH
To replace the SI63X40SH, order the SAI63X40SH. Confirm the ISO 15552 mounting interface, 40mm stroke, G3/8 port, and your mounting accessory. The -S magnet enables CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. The -H Viton seal handles 0-150C. For sizing, a 50mm bore yields 982N [email protected], while an 80mm bore yields 2513N. Note: a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X40SH
- ✓ 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 SI63X40SH FAQ
Yes, the SI63X40SH is discontinued. The direct replacement is the SAI63X40SH. It is dimensionally interchangeable per ISO 15552, retaining the same 63mm bore, 40mm stroke, G3/8 port, and mounting interface.
The 63mm bore features a G3/8 port and delivers 1559N push / 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical max of 318kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X40SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X40SH replacement — usually within 7-8 hours.