This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX850, 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 SI160BX850
The AirTAC SI160 Standard Cylinder SI160BX850 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 SAI160BX850, 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 → SAI160BX850
- 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 SI160BX850
The AirTAC SI160BX850 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering a push force of 10053 N at 0.5 MPa. It features a SUS304 stainless piston rod (-B) for corrosion resistance, a G3/4 air port, and 50 mm adjustable air cushions at both ends. AirTAC replaced this legacy unit with the SAI160BX850, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, force, port, and mounting accessories.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that this specific SKU lacks a magnet (-S) and cannot accept legacy CS1-B/DS1-B sensors. For high-temperature environments up to 150 C, specify the Viton H seal option.
Airtac SI160 Standard Cylinder SI160BX850 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX850 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX850 |
| 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 SAI160BX850 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 SAI160BX850 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 SI160BX850
| 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 SI160BX850 Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring sustained high thrust, utilizing the 18095 N output at 0.7 MPa to shape heavy gauge materials.
Large Assembly Actuation
Moves heavy structural components along an 850 mm travel path, relying on external guide rails to prevent rod bending during extended strokes.
Replacing the Airtac SI160 Standard Cylinder SI160BX850 with the SAI160BX850
To replace the discontinued SI160BX850, order the SAI160BX850. Verify your existing fixture matches the ISO 15552 mounting interface dimensions, and confirm the G3/4 port, M36x2 rod thread, and mounting accessory type (such as LB foot or TC trunnion). Because this SKU has no -S magnet, it cannot support position sensing; if switches are required, select an SAI equivalent with the magnet option and current AirTAC sensors. When sizing, neighboring bores offer alternatives: the 125 mm bore provides 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. A plain double-acting cylinder drifts on air loss because the cushion only decelerates at stroke end; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Finally, the 850 mm stroke demands external guide rails to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX850
- ✓ 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 SI160BX850 FAQ
Yes, the AirTAC SI160BX850 is discontinued and end-of-life. The direct replacement is the SAI160BX850. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 850 mm stroke, G3/4 port, and mounting interface, so it fits existing fixtures directly.
This double-acting cylinder uses a G3/4 air port. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa the push force is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX850
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX850 replacement — usually within 7-8 hours.