MANUFACTURER PRODUCT FILE · 2026-10-24

H71904AC ultra-high-speed angular-contact bearing

Luoyang Bearing Research Institute Co., Ltd. (ZYS) ↗

Published ZYS angular-contact bearing row. Equal envelope dimensions do not imply equal load or speed ratings. Application approval and the complete ordering suffix are required.

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PRODUCT REFERENCE

H71904AC ultra-high-speed angular-contact bearing

Designation: H71904AC
Bore d × outside D × width B: 20 × 37 × 9 mm
Dynamic load rating Cr: 4.8 kN

Specification summary from the company publication linked below.

Original dimensional envelope schematic: 20 mm bore, 37 mm outside diameter, 9 mm width; internal geometry not represented — H71904C / H71904AC dimensional envelope · Atlas original schematic · not a product or factory photograph. Series or schematic reference; not an exact dimensional product photograph. Original source ↗

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Source: company publication

Checked on 2026-10-24. Published ranges describe the catalogue, not live stock or a confirmed quotation.

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PUBLISHED SPECIFICATIONS

What the source actually states.

Parameter	Company-published information	Source
Designation	H71904AC	Company page ↗
Bore d × outside D × width B	20 × 37 × 9 mm	Company page ↗
Dynamic load rating Cr	4.8 kN	Company page ↗
Static load rating Cor	2.7 kN	Company page ↗
Grease limiting speed	45,000 r/min	Company page ↗
Oil limiting speed	67,000 r/min	Company page ↗
Approximate mass	0.04 kg	Company page ↗
Material / precision / preload	Not established for a complete order code in this table	Company page ↗

Standards are listed as published by the company; no equivalence between standards, certification or suitability for your application is implied.

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Commercial details to request

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