This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X640, 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 SI160X640
The AirTAC SI160 Standard Cylinder SI160X640 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 640mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X640, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke640 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X640
- 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 SI160X640
The AirTAC SI160X640 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 640 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI160X640, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI upgrade features a modernized piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X640 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X640 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X640 |
| Bore size | Ø160 mm |
| Stroke | 640 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 SAI160X640 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 SAI160X640 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 SI160X640
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×640 | 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 SI160X640 Is Used
Heavy Press Actuation
Drives large press platens requiring 10053 N at 0.5 MPa, utilizing the 640 mm stroke to fully open and close heavy forming dies.
Bulk Material Diversion
Pushes heavy bulk material diverters on wide conveyors, where the robust 40 mm rod withstands substantial shifting loads.
Replacing the Airtac SI160 Standard Cylinder SI160X640 with the SAI160X640
To replace the SI160X640, order the SAI160X640, confirming the ISO 15552 mounting interface, 160 mm bore, 640 mm stroke, G3/4 port, and M36x2 rod thread. If downsizing, a 125 mm bore yields 6136 N at 0.5 MPa; if upsizing, a 200 mm bore provides 15708 N. Because the 640 mm stroke is long, use external guides to prevent rod bending and side-load wear. This plain cylinder cannot hold load without live air—the 50 mm cushions only decelerate. For load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variant. This non-magnetic SKU cannot accept position sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X640
- ✓ 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 SI160X640 FAQ
Yes, the SI160X640 is discontinued. The direct replacement is the AirTAC SAI160X640. It shares the identical ISO 15552 mounting interface, 160 mm bore, 640 mm stroke, output force, and G3/4 port, fitting seamlessly into existing fixtures.
The 160 mm bore provides 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s. It uses a G3/4 port and a 50 mm adjustable cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X640
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X640 replacement — usually within 7-8 hours.