| TANDKOPPELING | |
|---|---|
| CALCULATION REPORT | |
| Order : | Dware |
| Project : | ESCO |
| Subproject : | Verification of Torque Rating |
| Project item : | Escogear FST 240 |
| Shaft ID : | ESC-001.001 |
| Hub ID : | ESC-002.001 |
| Calculated by : | André Dewispelaere |
| Organization : | Dware |
| Date : | 06-03-2012 |
| Gear parameters | Symbol | Unit | Shaft | Hub |
|---|---|---|---|---|
| Pressure angle | α | °.dec | 20.00000 | 20.00000 |
| Module 1 | m1 | mm | 5.00000 | 5.00000 |
| Module 2 | m2 | mm | 3.60000 | 3.60000 |
| Diametral pitch 1 | Pd1 | /in | 5.08000 | 5.08000 |
| Diametral pitch 2 | Pd2 | /in | 7.05556 | 7.05556 |
| Number of teeth | z | -- | 66 | -66 |
| Face width | b | mm | 50.0 | 60.0 |
| Angle deviation | DKw | °.dec | 0.750 | -- |
| Allowance angle deviation | TDKw | °.dec | 1.500 | -- |
| Teeth distance | L | mm | 162.0 | 162.0 |
| Gear calculation | Symbol | Unit | Shaft | Hub |
| Face width ratio | b1/b2 | -- | 0.83 | 0.83 |
| Reference diameter | d | mm | 330.000 | -330.000 |
| Tip diameter | da | mm | 337.200 | -322.800 |
| Root diameter | df | mm | 322.800 | -337.200 |
| Crowning magnitude | Cr | mm | 0.655 | -- |
| Crowning radius | rCr | mm | 477.683 | -- |
| Admissible radial offset | DKr | mm | ± 1.1 | -- |
| Clearance | Symbol | Unit | Shaft | Hub |
|---|---|---|---|---|
| Minimum circumferential backlash | jtmin | mm | 0.230 | 0.230 |
| Maximum circumferential backlash | jtmax | mm | 0.265 | 0.265 |
| Upper tooth thickness deviation | Asne | mm | -0.115 | -0.115 |
| Tooth thickness tolerance | Tsn | mm | 0.018 | 0.018 |
| Measuring pin diameter | DM | mm | 8.500 | 8.500 |
| Diametral two pins dimension | MdR | mm | 341.344 | -318.457 |
| Two pins dimension tolerance | TMdR | mm | ± 0.022 | ± 0.026 |
| Mean generative profile shift coef | xEm | -- | -0.0340 | -0.0340 |
| Mean generative profile shift | xEm.m | mm | -0.170 | -0.170 |
| Mean generative root diameter | dfEm | mm | 322.460 | -337.540 |
| Generative root diameter tolerance | TdfE | mm | ± 0.024 | ± 0.024 |
| Imposed tip diameter | daT | mm | 337.100 | -322.900 |
| Tip diameter tolerance | Tda | mm | ± 0.025 | ± 0.025 |
| Tip ball radius | raT | mm | 168.550 | -161.450 |
| Minimum bottom clearance | cmin | mm | 0.196 | 0.196 |
| Maximum bottom clearance | cmax | mm | 0.244 | 0.244 |
| Materials selection | Symbol | Unit | Shaft | Hub |
|---|---|---|---|---|
| Material designation | -- | -- | C45 | C45 |
| Yield strength | Re | N/mm˛ | 275 | 275 |
| Safety factor on contact pressure | Sp | -- | 3.06 | 3.06 |
| Permissible contact pressure | pP | N/mm˛ | 90 | 90 |
| Torque | Symbol | Unit | Shaft | Hub |
|---|---|---|---|---|
| Calculated torque | Tc | N.m | 123200 | 123200 |
| Nominal torque | Tn | N.m | 115000 | 115000 |
| Nominal contact pressure | pn | N/mm˛ | 84 | 84 |
| Safety factor on contact pressure | Spn | -- | 3.27 | 3.27 |
| Safety factor calcul/nomin torque | ST | -- | 1.07 | 1.07 |