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H7011C-2RZHQ1P4DBA 55*90*18mm High Speed High Precision Spindle Bearing
| Part Number | H7011C-2RZHQ1P4DBA |
| For Load Direction | Combined Radial and Thrust |
| Construction | One |
| Single Row/Double Row | Single |
| Seal Type | Open |
| Precision Rating | P4 (ABEC-7) P5 (ABEC-5) |
| Contact Angle | 15 |
| Duplex | DB (back-to-back arrangement) |
| DF (face-to-face arrangement) | |
| DT (tandem arrangement) | |
| Bore Dia (d) | 55 mm |
| Bore Dia Tolerance | -0.007mm to 0 |
| Outer Dia (D) | 90 mm |
| Outer Dia Tolerance | -0.08mm to 0 |
| Width (B) | 18 mm |
| Width Tolerance | -0.15mm to 0 |
| Ring Material | 52100 Chrome steel |
| Ball Material | SN24 Ceraimc Ball Si3N4 |
| Cage Material | TYN (ball guided polyamide resin cage) |
| TR (outer ring guided polyamide resin cage) | |
| Dynamic Load Rating (Cr) (KN) | 36 |
| Static Load Rating (Cor) (KN) | 28.6 |
| Axial Load (KN) | 18.9 |
| Max Speed (Grease) (RPM) | 15900 |
| Max Speed (Oil) (RPM) | 24200 |
| Preload | EL (extra light preload) |
| L (light preload) | |
| M (medium preload) | |
| H (heavy preload) | |
| CP (special preload) | |
| CA (special axial clearance) | |
| Lubrication | Required |
| Shaft Mount Type | Press Fit |
| Temperature Range | -40 to 120 ºC |
| Weight (grams) | 0.38 |
| H7011C-2RZHQ1P4DBB,H7011C-2RZHQ1P5DBA,H7011C-2RZHQ1P5DBB,H7011C-2RZHQ1P4SUL,H7011C-2RZHQ1P5SUL | |
MONTON precision angular contact ball bearings with 15° (C) and 25° (AC) contact angles. As for the angular contact ball bearings, the bigger the contact angle is, the greater the axial load capacity is, but the lower the limiting speed of bearings becomes. Therefore, the spindle, with high speed and small axial load, should adopt the 15° angular contact ball bearings, whereas the 25° angular contact ball bearings should be adopted.
MONTON precision angular contact ball bearings with high-speed angular contact bearings (standard series), super high-speed angular contact ball bearings, high-speed sealed angular contact ball bearings and high-speed spindle bearings.
The inner ring, outer ring and rolling element of rolling bearing under normal operating conditions are made of high carbon chromium bearing steel, but the steel bearings cannot meet the requirements of such special conditions as high speed, wear-resisting, low temperature rising, long life and high reliability etc., then Si3N4 ceramics are believed to be present optimum rolling bearing materials to replace bearing steel.
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