This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X620, 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 SI160X620
The AirTAC Airtac SI160 Standard Cylinder SI160X620 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 SAI160X620, 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 → SAI160X620
- 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 SI160X620
The AirTAC SI160X620 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 620 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160X620, which shares the same ISO 15552 mounting interface, M36x2 rod thread and 50 mm cushions. Because this SKU lacks a magnet, it cannot accept position sensors.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure, and introduces SAIL or BSAI lock variants the SI lacked. A Viton H seal option raises heat resistance to 150 C.
Airtac SI160 Standard Cylinder SI160X620 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X620 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X620 |
| 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 SAI160X620 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 SAI160X620 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 SI160X620
| 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 SI160X620 Is Used
Heavy Press Forming
Generates 14074 N at 0.7 MPa for bending thick metal plates and driving large stamping dies in automated fabrication lines.
Mold Actuation
Moves heavy injection or compression molds over the 620 mm travel distance, relying on 50 mm cushions to decelerate the 40 mm rod safely.
Replacing the Airtac SI160 Standard Cylinder SI160X620 with the SAI160X620
To replace the SI160X620, order the SAI160X620 and confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), G3/4 port and 620 mm stroke. This non-magnet SKU cannot take a sensor; if sensing is needed, specify an SAI with the -S option for CS1-B/DS1-B switches. For sizing both ways, the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. With a 620 mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X620
- ✓ 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 SI160X620 FAQ
Yes, the SI160X620 is discontinued. The direct replacement is the SAI160X620. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 620 mm stroke, output force, G3/4 port and mounting interface.
It features a G3/4 port and delivers a push force of 10053 N and pull force of 9425 N at 0.5 MPa. At 0.7 MPa the push is 14074 N, and 18095 N at 0.9 MPa. The theoretical max force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X620
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X620 replacement — usually within 7-8 hours.