Angular Contact Bearing HS71917-C-2RSD-T-P4S
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Brand
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SEMRI
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Manufacturer Part Number
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HS71917-C-2RSD-T-P4S
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Inside Diameter（d）
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85mm
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Outside Diameter（D）
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120mm
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Width（B）
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18mm
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CO
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CHINA |
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Contact Angle (a)
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15°
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Precision Grade
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P4S
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Seals or Shields
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Non Contact Seals
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Clearance
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CN = Standard Internal clearance
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Cage Type
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T = Outerring Guided Phenolic Cage
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Application Scope:
1. High-Speed Lightweight CNC Metalworking and Engraving/Milling Machines
Designed for high-speed cutting of non-ferrous metals (such as aluminum alloys and copper) or precision finishing of micro-molds, these bearings offer exceptionally high rotational frequencies:
• Spindles for high-speed CNC engraving and milling machines: Used for precision micro-machining of components such as mobile phone casings, high-precision 3D molds, and consumer electronics accessories.
• High-speed woodworking and plastics processing: In applications like high-speed woodworking machinery or PVC cutting—environments often characterized by rapid positioning movements and significant amounts of airborne dust and debris—the 2RSD sealing system effectively prevents wood dust and particles from entering the raceway.
2. Precision Internal Grinding Machines and Wheel Dresser Spindles (Grinding Spindles)
• Small-scale precision internal grinding machines: Require extremely high rotational speeds (often tens of thousands of RPM) to ensure effective grinding of small-diameter bores.
• Grinding wheel dressers: Used for the precision dressing of shaped grinding wheels; these require a high degree of rotational stability and smooth operation.
3. Core Components for Automated Machine Tools
• Sub-spindles for Swiss-type CNC automatic lathes (sliding-headstock lathes): Used for machining small-diameter, long-shaft components such as watch parts, medical bone screws, and precision electronic connectors.
• Driven tool turrets: The 719 ultra-thin series is perfectly suited for the compact internal space of CNC driven tool turrets. Furthermore, as these components are frequently exposed to high-pressure coolant sprays during operation, the 2RSD sealing system is critical for protection.
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