HC70-EDLR-P4S Series

Features of HC70-EDLR-P4S Series

We produce and sell HC70-EDLR-P4S Series high-speed spindle bearings, which have been adjusted, matched or grouped, with a contact angle of α = 25°, with ceramic balls, restricted tolerances, for direct oil feed through the outer ring, with embedded O type lock up.

Applications

The scope of application is wide. Our products survive by quality, develop by reputation, and win the market by service.

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Parameter Introduction Quality Standard

Parameter

Model	d	D	B
Model	mm	mm	mm
HC7004-EDLR-T-P4S	20	42	12
HC7005-EDLR-T-P4S	25	47	12
HC7006-EDLR-T-P4S	30	55	13
HC7007-EDLR-T-P4S	35	62	14
HC7008-EDLR-T-P4S	40	68	15
HC7009-EDLR-T-P4S	45	75	16
HC7010-EDLR-T-P4S	50	80	16
HC7011-EDLR-T-P4S	55	90	18
HC7012-EDLR-T-P4S	60	95	18
HC7013-EDLR-T-P4S	65	100	18
HC7014-EDLR-T-P4S	70	110	20
HC7015-EDLR-T-P4S	75	115	20
HC7016-EDLR-T-P4S	80	125	22
HC7017-EDLR-T-P4S	85	130	22
HC7018-EDLR-T-P4S	90	140	24
HC7019-EDLR-T-P4S	95	145	24
HC7020-EDLR-T-P4S	100	150	24
HC7021-EDLR-T-P4S	105	160	26
HC7022-EDLR-T-P4S	110	170	28
HC7024-EDLR-T-P5S	120	180	28
HC7026-EDLR-T-P6S	130	200	33
HC7028-EDLR-T-P7S	140	210	33
HC7030-EDLR-T-P8S	150	225	35
HC7032-EDLR-T-P9S	160	240	38
HC7034-EDLR-T-P10S	170	260	42
HC7036-EDLR-T-P11S	180	280	46
HC7038-EDLR-T-P12S	190	290	46
HC7040-EDLR-T-P13S	200	310	51

Quality Standard

Rockewell Bearings has added parameters that are not defined by ISO/ABEC for customers, including preload tolerances, functional tests, traceability and micron codes, cleanliness, raceway curvature, balls, etc. and roundness, surface processing (function And non-functional surfaces), steel specifications, cage trim and design, and installation chamfering. The definition of these parameters improves the quality of precision angular contact ball bearing products, thereby improving the performance of machine tool spindles.
The element of precision angular contact ball bearings is the cage, which is very important for machine tool bearings. The performance of the cage will affect the stability of machine tool bearings under high-speed rotation. The standard cage produced by Rockewell is made of phenolic resin. The internal design and the tolerance of the pocket gap are tight and the guide surface is controlled to ensure the stability of the cage during high-speed operation, lubrication and dynamic load.
The two elements of precision angular contact ball bearings are cleanliness, which is very important for precision angular contact ball bearings. Generally, the parts of the bearing products must be cleaned with a multi-solvent for 3 hours to prevent impurities from entering the bearing and prevent inherent pollution sources. In addition, the non-working surface of the bearing must be ground to ensure that the bearing is free of impurities before leaving the factory. Therefore, the bearing products produced by Rockewell can increase the normal operating time of the machine tool.
There are two main structural design methods for precision angular contact ball bearings: the high-rigidity WI series and the high-speed HX series to meet the requirements of different applications. The basic, open Rockewell bearing design has a higher spindle speed and greater dynamic radial stiffness, so the spindle can cut more material in a shorter time while ensuring excellent finished product tolerances. These improvements are attributed to the combination of the ball body and the precision engineering design of the raceway profile, which improves the processing rate.

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