68 Thin-Wall Series

Equipment downsizing

The thinnest NB-7 Series deep groove ball bearings minimize the space necessary for the bearings, allowing for even smaller and lighter equipment.

Convenient options

Series 68 and 69 thin-section deep groove ball bearings come in both open and sealed varieties, with plans to further improve sealing performance. Maintenance-free types and bearings with a locating snap ring are also available to help simplify the surrounding structure.

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Product Description
Product Model

68 Thin-wall Series.pdf

Overview

Bearing NO.	Shape Dimension (mm)								basicLoadRating (N)		Weight (kg)
	d		D		B		r min		Dynamic Cr	Static Cor
	mm	inch	mm	inch	mm	inch	mm	inch	Dynamic Cr	Static Cor
684	4	0.1575	9	0.3543	4	0.1575	0.1	0.0039	480	170	0.0010
685	5	0.1969	11	0.4331	5	0.1969	0.1	0.0059	770	320	0.0019
686	6	0.2362	13	0.5118	5	0.1969	0.1	0.0059	1080	440	0.0027
687	7	0.2756	14	0.5512	5	0.1969	0.1	0.0059	1170	510	0.0030
688	8	0.3150	16	0.6299	5	0.1969	0.2	0.0079	1250	590	0.0038
689	9	0.3543	17	0.6693	5	0.1969	0.2	0.0079	1330	660	0.0440
6800	10	0.3937	19	0.7480	5	0.1969	0.3	0.0118	1590	750	0.0050
6801	12	0.4724	21	0.8268	5	0.1969	0.3	0.0118	1910	1040	0.0060
6802	15	0.5906	24	0.9449	5	0.1969	0.3	0.0118	2070	1250	0.0070
6803	17	0.6693	26	1.0236	5	0.1969	0.3	0.0118	2130	1360	0.0080
6804	20	0.7874	32	1.2598	7	0.2756	0.3	0.0118	3480	2230	0.0190
6805	25	0.9843	37	1.4567	7	0.2756	0.3	0.0118	3680	2630	0.0220
6806	30	1.1811	42	1.6535	7	0.2756	0.3	0.0118	4000	3150	0.0260
6807	35	1.3780	47	1.8504	7	0.2756	0.3	0.0118	4270	3600	0.0290
6808	40	1.5748	52	2.0472	7	0.2756	0.3	0.0118	4410	3890	0.0330
6809	45	1.7717	58	2.2835	7	0.2756	0.3	0.0118	4590	4330	0.0400
6810	50	1.9685	65	2.5591	7	0.2756	0.3	0.0118	6610	6080	0.0520
6811	55	2.1654	72	2.8346	9	0.3543	0.3	0.0118	8530	8080	0.0830
6812	60	2.3622	78	3.0709	10	0.3937	0.3	0.0118	9200	8760	0.1060
6813	65	2.5591	85	3.3465	10	0.3937	0.6	0.0236	10510	9420	0.1250
6814	70	2.7559	90	3.5433	10	0.3937	0.6	0.0236	10890	10090	0.1350
6815	75	2.9528	95	3.7402	10	0.3937	0.6	0.0236	11230	10760	0.1450
6816	80	3.1496	100	3.9370	10	0.3937	0.6	0.0236	11320	11080	0.1550
6817	85	3.3465	110	4.3307	13	0.5118	1	0.0394	17599	18300	0.2650
6818	90	3.5433	115	4.5276	13	0.5118	1	0.0394	17853	18961	0.2800
6819	95	3.7402	120	4.7244	13	0.5118	1	0.0394	18089	19616	0.2980
6820	100	3.9370	125	4.9213	13	0.5118	1	0.0394	18340	20266	0.3110

Extremely thin-section ball bearings contribute to equipment downsizing, lighter weight, and low torque in robots, construction equipment, and industrial machinery.

With lower frictional torque and less torque variation, N Series bearings improve torque transmission and provide smooth rotation. These high-precision bearings also support high speeds.

Features

Equipment downsizing

The thinnest NB-7 Series deep groove ball bearings minimize the space necessary for the bearings, allowing for even smaller and lighter equipment.

Convenient options

Series 68 and 69 thin-section deep groove ball bearings come in both open and sealed varieties, with plans to further improve sealing performance. Maintenance-free types and bearings with a locating snap ring are also available to help simplify the surrounding structure.

Applications