Polyester Polyolefin Rope Strength
Reference data and engineering information about polyester polyolefin rope strength for mechanics applications.
polyesterpolyolefinropestrength
Overview
Engineering reference data for Polyester Polyolefin Rope Strength in mechanics.
Key Formulas
Newton's Second Law
Force = mass × acceleration.
Work
Work = force × displacement × cos(angle).
Kinetic Energy
Energy of motion.
Potential Energy
Gravitational potential energy.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Force | N | |
| Mass | kg | |
| Acceleration | m/s² | |
| Velocity | m/s |
18 rows
Rope Diameter(in) | Rope Diameter(mm) | Minimum Breaking Strength(lbf) | Minimum Breaking Strength(kN) | Safe Load (SF 12)(lbf) | Safe Load (SF 12)(kN) | Weight(lbm/ft) | Weight(kg/m) |
|---|---|---|---|---|---|---|---|
| 1/4 | 6 | 1200 | 5.34 | 100 | 0.445 | 0.016 | 0.024 |
| 5/16 | 8 | 1870 | 8.3 | 156 | 0.693 | 0.025 | 0.037 |
| 3/8 | 10 | 2700 | 12 | 225 | 1 | 0.036 | 0.054 |
| 7/16 | 11 | 3500 | 15.6 | 292 | 1.3 | 0.048 | 0.071 |
| 1/2 | 12 | 4400 | 19.6 | 367 | 1.63 | 0.062 | 0.092 |
| 9/16 | 14 | 5200 | 23.1 | 433 | 1.93 | 0.079 | 0.118 |
| 5/8 | 16 | 6100 | 27.1 | 508 | 2.26 | 0.095 | 0.141 |
| 3/4 | 18 | 8400 | 37.4 | 700 | 3.11 | 0.135 | 0.201 |
| 7/8 | 22 | 11125 | 49.5 | 927 | 4.12 | 0.18 | 0.268 |
| 1 | 24 | 13175 | 58.6 | 1100 | 4.89 | 0.218 | 0.324 |
| 1 1/16 | 26 | 14775 | 66 | 1230 | 5.47 | 0.245 | 0.365 |
| 1 1/8 | 28 | 16325 | 73 | 1360 | 6.05 | 0.271 | 0.403 |
| 1 1/4 | 30 | 19900 | 89 | 1660 | 7.38 | 0.334 | 0.495 |
| 1 3/8 | 32 | 21950 | 98 | 1830 | 8.14 | 0.365 | 0.543 |
| 1 1/2 | 36 | 28250 | 126 | 2350 | 10.5 | 0.47 | 0.699 |
| 1 5/8 | 40 | 32950 | 147 | 2750 | 12.2 | 0.55 | 0.818 |
| 1 3/4 | 44 | 36850 | 164 | 3070 | 13.7 | 0.62 | 0.923 |
| 2 | 48 | 48050 | 214 | 4000 | 17.8 | 0.81 | 1.21 |
Source: engineeringtoolbox.com
Application Example
The relationship between mass and force (weight) is given by:
Where:
- = force or weight (N)
- = mass (kg)
- = acceleration due to gravity (9.81 m/s²)
Example Calculation: For a 3/8" polyester polyolefin rope with a safe load of 1.0 kN, the maximum safe mass is:
Important Notes
- Safety Factor: The safe load values are calculated using a *Safety Factor of 12 (Safe Load = Minimum Breaking Strength / 12). This high factor is typical for lifelines and critical applications.
- Material Properties: Polyester polyolefin rope offers good strength, abrasion resistance, and UV stability, making it suitable for marine, industrial, and outdoor applications.