This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X850S, 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 SI160X850S
The AirTAC SI160 Standard Cylinder SI160X850S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 850mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X850S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X850S
- 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 SI160X850S
The AirTAC SI160X850S is a discontinued double-acting ISO 15552 profile cylinder with an 850 mm stroke. It delivers 10053 N push force at 0.5 MPa and features a G3/4 port. AirTAC replaced this legacy unit with the SAI160X850S, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, output force and accessories.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL air-released lock and BSAI clamp-lock variants absent in the SI line, while retaining the CS1-B/DS1-B legacy sensor compatibility via the -S magnet.
Airtac SI160 Standard Cylinder SI160X850S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X850S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X850S |
| Bore size | Ø160 mm |
| Stroke | 850 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 SAI160X850S 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 SAI160X850S 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 SI160X850S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×850 | 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 SI160X850S Is Used
Heavy Machinery Forming
Drives large presses and forming tools requiring 10053 N push force at 0.5 MPa over an 850 mm travel distance.
Large Material Transfer
Indexing heavy workpieces between manufacturing stations on extended 850 mm strokes with adjustable end cushions.
Replacing the Airtac SI160 Standard Cylinder SI160X850S with the SAI160X850S
To replace the SI160X850S, order the SAI160X850S. Verify your ISO 15552 mounting interface, 160 mm bore, 850 mm stroke, G3/4 port (PT/G/NPT), and mounting accessory. The -S suffix indicates a piston magnet for CS1-B/DS1-B switches. Sizing both ways: a 200 mm bore offers 15708 N push at 0.5 MPa, while a 125 mm bore provides 6136 N. A plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use the SAIL or BSAI lock variant, or an external pilot check valve. At 850 mm, prevent rod bending by using an external guide to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X850S
- ✓ 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 SI160X850S FAQ
Yes, the SI160X850S is discontinued. The direct replacement is the SAI160X850S. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 850 mm stroke, G3/4 port, output force and mounting interface.
This double-acting cylinder operates at 30-500 mm/s. It generates 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. It has a 50 mm adjustable cushion and M36x2 rod thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X850S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X850S replacement — usually within 7-8 hours.