This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI63X170SH, 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 SI63X170SH
The AirTAC Airtac SI63 Standard Cylinder SI63X170SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 170mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI63X170SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke170 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI63X170SH
- 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 SI63X170SH
The AirTAC SI63X170SH is a discontinued double-acting ISO 15552 profile cylinder with a 63mm bore and 170mm stroke. It delivers 1559N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI63X170SH, which maintains the exact same ISO 15552 mounting interface, bore, stroke, output force, and port size. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This -SH configuration includes a piston magnet for legacy CS1-B/DS1-B switches and a Viton H seal, extending the operating temperature range from -20°C up to 0-150°C.
The SAI family also introduces variants the original SI lacked, such as the SAIL air-released lock, the SAIF built-in 4M valve, and the BSAI clamp-lock. Remember that a standard cylinder does not hold load without live air; the cushion only decelerates, so use a lock variant or pilot check valve for holding.
Airtac SI63 Standard Cylinder SI63X170SH Technical Specifications
| Model | Airtac SI63 Standard Cylinder SI63X170SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI63X170SH |
| Bore size | Ø63 mm |
| Stroke | 170 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 SAI63X170SH 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 SAI63X170SH 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 SI63X170SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×170 | 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 SI63X170SH Is Used
High-Temp Clamping
Secures metal workpieces in machining fixtures, utilizing the Viton H seal to withstand elevated ambient temperatures near hot spindles.
Transfer Diverters
Actuates routing gates on packaging lines, providing reliable 170mm travel to redirect products between parallel conveyor belts.
Vertical Lift Stops
Raises and lowers pallet stops in gravity roller conveyors, handling loads safely within the 79kg vertical lift margin.
Replacing the Airtac SI63 Standard Cylinder SI63X170SH with the SAI63X170SH
To replace the discontinued SI63X170SH, order the SAI63X170SH. Confirm the ISO 15552 mounting interface, 63mm bore, 170mm stroke, G3/8 port (PT/G/NPT thread options), and mounting accessory match your fixture. Retain the -S magnet for position sensing (the SAI uses current AirTAC switches) and the -H Viton seal for 0-150C environments. When sizing, note the 63mm bore yields 1559N push at 0.5MPa; if undersized, the 80mm bore offers 2513N. Because this is a 170mm stroke, ensure adequate guide support to prevent rod bending under side loads. A plain cylinder drifts on air loss, so for load holding specify the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI63X170SH
- ✓ 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 SI63X170SH FAQ
Yes, the AirTAC SI63X170SH is discontinued. The direct replacement is the SAI63X170SH. It is dimensionally interchangeable per ISO 15552, matching the 63mm bore, 170mm stroke, G3/8 port, and mounting interface, so it drops directly into existing fixtures.
The 63mm bore features a G3/8 air port and M16x1.5 rod thread. It provides 1559N push and 1402N pull at 0.5MPa, 2182N push at 0.7MPa, 2805N push at 0.9MPa, and a theoretical maximum force of 318kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI63X170SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI63X170SH replacement — usually within 7-8 hours.