71920E/HQ1/P4/UL Hybrid Ceramic Bearing
|
Brand |
= |
SEMRI |
|
Manufacturer Part Number |
= |
71920E/HQ1/P4/UL |
|
Inside Diameter |
= |
100mm |
|
Outside Diameter |
= |
140mm |
|
Width |
= |
20mm |
|
Contact Angle |
= |
25° |
|
Precision Grade |
= |
P4 |
|
Seals or Shields |
= |
None |
|
Material |
= |
Hybrid Ceramic |
|
Clearance |
= |
CN = Standard Internal clearance |
|
Cage Type |
= |
T = Outerring Guided Phenolic Cage |
71920E/HQ1/P4 Part Number Breakdown
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HQ1(Hybrid Ceramic): Steel rings with silicon nitride (Si3N4) ceramic balls. Minimal heat generation, significantly boosting speed limits.
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719(Dimension Series): Ultra-light and thin series. Small OD and narrow cross-section, ideal for compact, high-speed spindles.
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20(Bore Code): Represents a bore diameter of 100 mm(calculated as 20multiplied by 5).
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-E(Contact Angle): 25° contact angle. High radial load capacity, allowing maximum rotational speeds.
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-T(Cage): Outer ring guided, laminated phenolic resinsolid window-type cage. Light and wear-resistant.
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-P4(Precision Class): Dimensional tolerances meet P4 (ABEC-7), running accuracy exceeds P2 (ABEC-9).
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-UL(Preload & Matching): Light preload, universal design. Can be freely matched in O-arrangement (DB), X-arrangement (DF), or Tandem (DT).
Primary Applications
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CNC Machine Tools: Motorized spindles and high-speed cutting spindles.
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Precision Grinding Machines: Workhead spindles requiring high stiffness and low runout.
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Instrument Testing: High-precision shafting systems for inspection equipment.
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High-Speed Transmissions: Rotational mechanisms with strict temperature rise control.
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