This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X620H, 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 SI160 Standard Cylinder SI160X620H
The AirTAC SI160 Standard Cylinder SI160X620H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 620mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X620H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke620 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X620H
- 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 SI160 Standard Cylinder SI160X620H
The AirTAC SI160X620H is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore, 620 mm stroke, and Viton H high-temperature seals (0 to 150 C). It delivers 10053 N push and 9425 pull at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160X620H, matching the interface, force, and mounting.
This SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure and long life. Because this SKU lacks a magnet (-S), it cannot take a CS1-B/DS1-B sensor.
Airtac SI160 Standard Cylinder SI160X620H Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X620H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X620H |
| Bore size | Ø160 mm |
| Stroke | 620 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160X620H carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X620H produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X620H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×620 | 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 SI160 Standard Cylinder SI160X620H Is Used
Heavy Press Actuation
Drives large industrial presses requiring 14074 N push at 0.7 MPa, utilizing the 620 mm stroke for deep forming cycles.
High-Temp Molding Ejector
Ejects composite or rubber parts from 0-150 C molds safely, leveraging the Viton H seals and 160 mm bore power.
Replacing the Airtac SI160 Standard Cylinder SI160X620H with the SAI160X620H
To replace the SI160X620H, order the SAI160X620H and confirm the ISO 15552 mounting interface, 620 mm stroke, and G3/4 port. The SAI family adds SAIL (air-released lock) and BSAI (clamp-lock) variants the SI lacked; use these or an external pilot check valve, as a plain cylinder drifts on air loss—the 50 mm cushion only decelerates. With 620 mm of travel, use an external guide to prevent rod bending. If downsizing, a 125 mm bore yields 6136 N push; if upsizing, 200 mm yields 15708 N. Rod material options include carbon steel, SUS420J2, or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X620H
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X620H FAQ
Yes, the SI160X620H is discontinued. The direct replacement is the SAI160X620H. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 620 mm stroke, G3/4 port, and mounting fixtures.
It features a G3/4 port, a 40 mm rod, and a 50 mm cushion. Theoretical max force is 2050 kgf at 1.0 MPa. At 0.5 MPa it pushes 10053 N and pulls 9425 N. At 0.7 MPa push is 14074 N, and at 0.9 MPa push is 18095 N.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X620H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X620H replacement — usually within 7-8 hours.