Free Engineering Tool #220
Wire Rope Capacity Calculator
Calculate safe working load from wire rope diameter, construction type and safety factor.
Results
Wire Rope MBL Formula
Where d is rope diameter in mm and K is construction factor.
| Construction | K factor |
|---|---|
| 6×7 | 0.042 |
| 6×19 | 0.046 |
| 6×36 | 0.044 |
| 8×19 | 0.040 |
MBL = K × d² (kN), where K is a factor based on construction type and d is diameter in mm.
Typical: 5:1 for general lifting, 6:1 for personnel, 3.5:1 for static loads.
6 strands × 19 wires per strand. Different constructions have different flexibility and strength.
Check for broken wires, kinks, corrosion, diameter reduction, and core protrusion per ISO 4309.
Approximately 0.04 × d² kg/m for standard steel rope.
Professional instruments for industrial applications.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
