1,860d
45× longer
118MPa
−71%214kN
No changefrom Mill-iQ outputs
from mill speed
thickness under bolt taper
Liner type
Bolt pad
Bolt pad type
Spacer fitted
| Output | Without JEMTEC | With JEMTEC | Change |
|---|---|---|---|
| Estimated bolt life | 41 d | 1,860 d | 45× |
| Cycles to fatigue failure | 5.9 × 10⁵ | 2.68 × 10⁷ | 45× |
| Maximum bending stress | 412 MPa | 118 MPa | −71% |
| Min tension to prevent slip | N/A | 214 kN | — |
| Rubber compression | 1.9 mm | 0.7 mm | −63% |
| Surface pressure | 3.1 MPa | 8.4 MPa | 2.7× |
| Axial stiffness | 1,240 kN/mm | 3,410 kN/mm | 2.8× |
| Axial stiffness ratio | 0.31 | 0.86 | +0.55 |
| Shear stiffness | 96 kN/mm | 1,120 kN/mm | 11.7× |
| Shear stiffness ratio | 0.08 | 0.94 | +0.86 |
Bolt life is derived from cycles to fatigue failure for a 4140 bolt at the input shear load and the mill load frequency. Values shown are sample data.
| JEMTEC component | Dimension | Sample value |
|---|---|---|
| Copper insert | Effective shear area | 8,847 mm² |
| Rubber layer | Nominal thickness | 10 mm |
| Bolt pad | Bar width | 160 mm |
| Bolt pad | Bar length | 837 mm |
| Bolt hole | Nominal diameter | 57 mm |
Dimensions are illustrative sample values and are not a released engineering specification.