HCB71905-C-T-P4S-UL Hybrid Ceramic Bearing
|
Brand |
= |
SEMRI |
|
Manufacturer Part Number |
= |
HCB71905-C-T-P4S-UL |
|
Inside Diameter |
= |
25mm |
|
Outside Diameter |
= |
42mm |
|
Width |
= |
9mm |
|
Contact Angle |
= |
15° |
|
Precision Grade |
= |
P4S |
|
Seals or Shields |
= |
None |
|
Material |
= |
Hybrid Ceramic |
|
Clearance |
= |
CN = Standard Internal clearance |
|
Cage Type |
= |
T = Outerring Guided Phenolic Cage |
Core Physical Dimensions
-
Bore Diameter (d): 25 mm
-
Outside Diameter (D): 42 mm
-
Width/Thickness (B): 9 mm
-
Mass (Weight): Approx. 0.039 kg
Part Number Breakdown (Suffix Meaning)
When ordering, the full designation often appears as HCB71905-C-T-P4S-UL. The English technical terminology for each segment is detailed below:
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HCB: Hybrid Ceramic Ball Bearing. The rolling elements are made of silicon nitride (\(Si_{3}N_{4}\)) ceramic, while the inner and outer rings are made of bearing steel.
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719: Angular Contact Ball Bearing Series. Indicates an ultra-light, thin-walled cross-section designed for high-speed applications.
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05: Bore Code. Calculated as \(05 \times 5 = 25\text{ mm}\) inner diameter
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2RSD(Optional): Lip Seals on Both Sides. Non-contact rubber seals used for dust protection and grease retention. If omitted, the bearing is "Open".
-
-
T: Laminated Fabric Cage(Phenolic resin cage). Lightweight, guides on the outer ring, absorbs small amounts of lubricant, and is optimized for extreme speeds.
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P4S: Super Precision Class. Boundary dimensions conform to ISO Class 4, while running accuracies surpass ISO Class 4 to meet stringent ISO Class 2 standards.
-
UL: Universal Matching for Light Preload. Designed to be mounted in any arrangement (e.g., Back-to-Back, Face-to-Face, or Tandem) with a light preload configuration.
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