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HC719-EDLR-P4S Series

The HC719-EDLR-P4S is a single-row angular contact ceramic hybrid spindle bearing specifically designed for high-speed and high-precision applications.Thanks to its ceramic hybrid design and ultra-precision manufacturing process, this bearing has become a core component of high-speed and high-precision equipment, especially performing excellently in the fields of machine tools, semiconductors, and medical devices.

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	Type	Main dimensions			Rated load		Rated speed
					Dynamics	Static	Speed limit
Mail		d[mm]	D[mm]	B[mm]	C[kN]	C₀[kN]	[r/min]
	HC71922-EDLR-T-P4S	110	150	20	-	-	-
	HC71921-EDLR-T-P4S	105	145	20	-	-	-
	HC71920-EDLR-T-P4S	100	140	20	-	-	-
	HC71919-EDLR-T-P4S	95	130	18	-	-	-
	HC71918-EDLR-T-P4S	90	125	18	-	-	-
	HC71917-EDLR-T-P4S	85	120	18	-	-	-
	HC71916-EDLR-T-P4S	80	110	16	-	-	-
	HC71915-EDLR-T-P4S	75	105	16	-	-	-
	HC71914-EDLR-T-P4S	70	100	16	-	-	-
	HC71913-EDLR-T-P4S	65	90	13	-	-	-
	HC71912-EDLR-T-P4S	60	85	13	-	-	-
	HC71911-EDLR-T-P4S	55	80	13	-	-	-
	HC71910-EDLR-T-P4S	50	72	12	-	-	-
	HC71909-EDLR-T-P4S	45	68	12	-	-	-
	HC71908-EDLR-T-P4S	40	62	12	-	-	-
	HC71907-EDLR-T-P4S	35	55	10	-	-	-
	HC71906-EDLR-T-P4S	30	47	9	-	-	-

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Structural Features

Type: It is a single-row angular contact ball bearing, suitable for withstanding radial and unidirectional axial loads.
Material: It uses ceramic balls (a hybrid bearing design). The ceramic balls have the characteristics of light weight, high hardness, and strong wear resistance. They can reduce friction and heat generation, and significantly improve the rotational speed capacity.
Tolerance Class: P4S (ultra-precision class), which ensures high rotational accuracy and rigidity.
Cage: It is a solid window-type cage made of phenolic resin or nylon. It is guided by the outer ring, which is suitable for maintaining stability under high-speed working conditions.
Lubrication Design: The DLR represents a direct lubrication structure. Through the integrated O-ring, it optimizes the lubrication efficiency and reduces heat accumulation.

Performance Advantages

High-Speed Performance: The ceramic balls reduce centrifugal force and heat generation. The limiting rotational speed is far higher than that of ordinary steel ball bearings, making it suitable for high-speed spindle applications.
High Precision and Rigidity: The P4S tolerance and the angular contact design provide excellent guiding accuracy and anti-deformation ability, ensuring the stability of the equipment.
Long Service Life: The ceramic material has outstanding corrosion resistance and fatigue resistance, making it suitable for harsh environments or long-term heavy-load working conditions.

Differences from HCB719-CDLR-P4S

Contact Angle: The contact angle of the HC719-EDLR-P4S is 25° (E), while that of the HCB719-CDLR-P4S is 15° (C). So, the HC719-EDLR-P4S has a stronger axial load-carrying capacity.
Cage Material: Some models may use a nylon cage (T), which further reduces friction and weight.

Application

The bearings can be used in the following industries

Machine Tool Spindles: High-speed machining centers and precision grinders, which require high rotational speed and high-precision support.
Semiconductor Equipment: Lithography machines and wafer cutters, which require low vibration and high reliability.
Medical Devices: CT scanners and dental equipment, which need quiet and low-heat precision transmission.
High-Speed Motors: High-frequency motors and turbomachinery, which need to withstand high rotational speed and dynamic loads.
Precision Instruments: Centrifuges and testing equipment, which rely on the stability and precision of the bearing.