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| | | Ball Crush Strength | | |
| | | | | | | | | | | CERBEC Silicon N | tride Typical | Properties | | | | MATERIAL Sintering Aid | NBD-200 MgO | SN-101C Y203.AI203 | | | | Density [g/cm!] (% Theoretical) | | | | | | 3.16 [>99.9%] | 3.211>99.9%] | | | | RT Flexural Strength [MPa] | >900 | >1000 | | | | Weibull Modulus | >15 | >25 | | | | Elastic Modulus [GPa] | 320 | 310 | | | | Poisson's Ratio | 0.26 | 0.27 | | | | Vicker's Hardness HV10 | 1550 | 1600 | | | | | | | | | | Fracture Toughness [MPa * mV2] | >5.5 | >6.5 | | | | Thermal Expansion Coeff. 10YC; [RT-irj00t] | | | | | | 2.9 | 3.7 | | | | Thermal Conductivity [W/mK]@25°C | | | | | | 29 | 34 | | | | Electrical Resistivity [ohm-cm] | | 10'4 | | | | | | | | | | Dielectric Constant® 1MH | i 8.0 | 8.0 | | | | Corrosion 5% HF Solution, 500 Hours Weight Loss/ Surface Area [g/cm2] 0.68 | 0.10 | | | | | | | | | | |
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| | | 5/16" 11/32" 3/8" 1/2" | | |
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| | | (4.762mm) (3.350mm) (7.143mm) (7.937mm) (8.731mm) (9.525mm) (12.7mm) Ball Diameter nbd200 • SN101C | | |
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| | | SN -101C Material Testing By Clients | | |
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| | | CERBEC Customer Location | | |
| | | Japan United Kingdom USA Rolling Contact Fatigue Rolling Contact Fatigue Rolling Contact Fatigi | | |
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| | | Test Type Description | | |
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| | | 3/8" SN-101C Balls on Cr Steel Plates | | |
| | | Cr Steel Discs on SN-101C Rods | | Cr Steel Balls on SN-101C Rods | | |
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| | | Number of Tests | | |
| | | 10 | | 8 | | |
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| | | | | | | | | | | Contact Stress [GPa] [ksi] 5.9 [862] | 4.8 [700] | 6.9 (1006) | | | | Speed [RPM] 1,200 | 12,500 | 3,600 | | | | Lubricant Oil | Oil | Oil | | | | Test Target [No Failure] >400 hours | >72 [10P cycles | > 30 [10]! cycles | | | | Results All tests >400 hours | All tests >72 [10]6 cycles All tests >40 [lOl'cycl | | | | | | | | | |
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| | | Corrosion 5% HCL Solution, 500 Hours Weight Loss/ Surface Area [g/cmJ] 0.0002 | | |
| | | 0.0036 | | |
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| | | CERBEC SN-101C Grade 5 Balls - Bearing Fatigue Tests by Clients | | |
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| | | CERBEC Customer Location | | Germany | | USA | | |
| | | Japan | | |
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| | | | | | | | | | | | Bearing Type | Thrust | Angular Contact | Radial | | | | Ball Size mm [in.] | 9.525mm [3/8"] | 7.937mm [5/16U] | 11.112mm [7/16"] | | | | Bearings Tested | 4 | 4 | 18 | | | | Balls Per Bearing | | 15 | 9 | | | | Contact Stress GPa [ksi] | 3.7 [540] | 2.9 [423] | 3.6 [525] | | | | Speed [RPM] | 2,000 | 12,000 | 3,000 | | | | Test Target [Hours] | 500 | 1,000 | 700 | | | | Result | All Bearings >500 hours SN-101C Qualified | All Bearings >1,000 hours SN-101C Qualified | All Bearings >2,000 Hours SN-101C Qualified | | | | | | | | | | | |
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