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KDB DB- B (Bronze)
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| Max. Load | Static | 250 N/㎟ |
|---|---|---|
| Very low speed | 140 N/㎟ | |
| Rotating oscillating |
60 N/㎟ | |
| Max. PV dry running |
Short-term operation |
3.6 N/㎟ * ㎧ |
| Continuous operation |
1.8 N/㎟ * ㎧ | |
| PV max. hydrodynamic | 30 N/㎟ * ㎧ | |
| Temp. limit | -195 ℃ ~ +280 ℃ | |
|---|---|---|
| Max. speed |
Dry running | 2 ㎧ |
| Hydrodynamic operation |
> 2 ㎧ | |
| Thermal conductivity | 42 W(m.K)-1 | |
| Friction coefficient |
Dry | 0.08 ~ 0.20 |
| Hydrodynamic | 0.02 ~ 0.08 | |
| Coefficient of thermal expansion |
11 * 10-5 * K -3 | |




| Max. Load | Static | 250 N/㎟ |
|---|---|---|
| Very low speed | 140 N/㎟ | |
| Rotating oscillating |
60 N/㎟ | |
| Max. PV dry running |
Short-term operation |
3.6 N/㎟ * ㎧ |
| Continuous operation |
1.8 N/㎟ * ㎧ | |
| PV max. hydrodynamic | 30 N/㎟ * ㎧ | |
| Temp. limit | -195 ℃ ~ +280 ℃ | |
|---|---|---|
| Max. speed |
Dry running | 2 ㎧ |
| Hydrodynamic operation |
> 2 ㎧ | |
| Thermal conductivity | 42 W(m.K)-1 | |
| Coefficient of thermal expansion |
15 * 10-5 * K -3 | |
| Friction coefficient |
Dry | 0.08 ~ 0.20 |
| Hydrodynamic | 0.02 ~ 0.08 | |




| Max. Load | Static | 250 N/㎟ |
|---|---|---|
| Very low speed | 140 N/㎟ | |
| Rotating oscillating |
70 N/㎟ | |
| Max. PV | 3 N/㎟ * ㎧ | |
| Coefficient of thermal expansion |
11 * 10-5 * K -3 | |
| Temp. limit | -40℃ ~ +130 ℃ | |
|---|---|---|
| Max. speed |
Dry running | 2 ㎧ |
| Hydrodynamic operation |
> 2 ㎧ | |
| Thermal conductivity | 4 W(m.K)-1 | |
| Friction coefficient |
0.05 ~ 0.20 | |


| Outside diameter | Tolerance of outside diameter |
|---|---|
| D ≤ 10 | +0.055 +0.025 |
| 10 < D ≤ 18 | +0.065 +0.030 |
| 18 < D ≤ 30 | +0.075 +0.035 |
| 30 < D ≤ 50 | +0.085 +0.045 |
| 50< D ≤ 80 | +0.100 +0.055 |
| 80< D ≤ 120 | +0.120 +0.070 |
| 120< D ≤ 180 | +0.170 +0.100 |
| 180< D ≤ 250 | +0.210 +0.130 |
| 250< D ≤ 305 | +0.260 +0.170 |
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