This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX185, 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 SI160BX185
The AirTAC SI160 Standard Cylinder SI160BX185 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 185mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX185, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX185
- 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 SI160BX185
The AirTAC SI160BX185 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 185 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a SUS304 stainless piston rod (-B), a G3/4 port, and 50 mm adjustable air cushions. The direct replacement is the SAI160BX185, which maintains the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Because this specific SKU lacks a magnet (-S), it cannot accept a CS1-B or DS1-B sensor. For applications requiring load holding on air loss, note that the cushion only decelerates; you will need the SAIL or BSAI lock variant.
Airtac SI160 Standard Cylinder SI160BX185 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX185 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX185 |
| Bore size | Ø160 mm |
| Stroke | 185 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 SAI160BX185 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 SAI160BX185 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 SI160BX185
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×185 | 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 SI160BX185 Is Used
Heavy Press Forming
Applies the 10053 N push force at 0.5 MPa for stamping and forming robust metal components in automated fabrication lines.
Injection Molding Extraction
Extracts dense molded products from machinery, relying on the 50 mm adjustable air cushions to decelerate heavy 512 kg vertical loads smoothly.
Replacing the Airtac SI160 Standard Cylinder SI160BX185 with the SAI160BX185
To replace the discontinued SI160BX185, order the SAI160BX185. Confirm the ISO 15552 mounting interface, the 185 mm stroke, the G3/4 port, and the SUS304 stainless rod (-B). Since this non-magnetic SKU cannot support switches, if sensing is required you must select an SAI equivalent with the magnet option (-S) and use current AirTAC switches. For sizing, the 160 mm bore yields 10053 N push at 0.5 MPa; dropping to a 125 mm bore reduces push to 6136 N, while increasing to 200 mm provides 15708 N. A plain cylinder drifts without live air, so for load holding consider the SAIL lock or BSAI clamp-lock variant, or an external pilot check valve. Although 185 mm is under the 300 mm side-load threshold, always verify guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX185
- ✓ 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 SI160BX185 FAQ
Yes, the AirTAC SI160BX185 is discontinued. The direct replacement is the SAI160BX185. It is dimensionally interchangeable per ISO 15552, offering the same bore, stroke, force, G3/4 port, and mounting interface, but features an upgraded piston seal.
The 160 mm bore features a G3/4 port and delivers a push of 10053 N and pull of 9425 N at 0.5 MPa. At 0.7 MPa push 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 SAI160BX185
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