Inch Miniature

Inch miniature bearings are compact, high-accuracy components manufactured to inch-based dimensional standards. They are widely used in aerospace, electronics, laboratory instruments, and various precision-driven systems. With advanced construction and superior materials, these bearings provide excellent rotational performance, low vibration, and reliable durability. Ideal for applications where size, weight, and precision matter, inch miniature bearings ensure smooth and efficient operation across diverse industrial environments.

bore(d)	outer(D)	width	JIS/ISO	NMB	NMB	Lo	Li	Dyn.	Stat.
Ø(mm)	Ø(mm)	B(mm)		designation	designation	(mm)	(mm)	C(N)	Co(N)
1,0160	3,1750	1,1913		RI-2x2		2,56	1,64	106	28
1,1913	3,9675	1,5875	R0	RI-21/2		3,16	2,05	158	44
1,1913	3,9675	2,3800	R0ZZ		RI-21/2ZZ	3,43	2,05	158	44
1,3970	4,7625	1,9837	R1	RI-3		4,02	2,36	264	71
1,3970	4,7625	2,7788	R1ZZ		RI-3ZZ	4,29	2,36	264	71
1,9837	6,3500	2,3800	R1-4	RI-4		4,90	3,10	330	99
1,9837	6,3500	3,5712	R1-4ZZ		RI-4ZZ	5,23	3,10	330	99
2,3800	4,7625	1,5875	R133	RI-3332		4,13	3,00	187	59
2,3800	4,7625	2,3800	R133ZZ		RI-3332ZZ	4,28	3,00	187	59
2,3800	7,9375	2,7788	R1-5	RI-5		6,88	4,40	563	183
2,3800	7,9375	3,5712	R1-5ZZ		RI-5ZZ	7,19	4,40	563	183
3,1750	6,3500	2,3800	R144	RI-418		5,52	4,10	285	97
3,1750	6,3500	2,7788	R144ZZ		RI-418ZZ	5,85	4,10	285	97
3,1750	7,9375	2,7788	R2-5	RI-518		6,88	4,40	563	183
3,1750	7,9375	3,5712	R2-5ZZ		RI-518ZZ	7,19	4,40	563	183
3,1750	9,5250	2,7788	R2-6	RI-618		6,88	4,40	563	183
3,1750	9,5250	3,5712	R2-6 ZZ		RI-618ZZ	7,20	4,40	563	183
3,1750	9,5250	3,9675	R2	R-2		7,65	5,08	641	226
3,1750	9,5250	3,9675	R2ZZ		R-2ZZ	8,19	5,08	641	226
3,9675	7,9375	2,7788	R155	RI-5532		7,08	5,62	391	142
3,9675	7,9375	3,1750	R155ZZ		RI-5532ZZ	7,31	5,62	391	142
4,7625	7,9375	2,7788	R156	RI-5632		7,08	5,62	391	142
4,7625	7,9375	3,1750	R156ZZ		RI-5632ZZ	7,31	5,62	391	142
4,7625	9,5250	3,1750	R166	RI-6632		8,72	5,97	712	271
4,7625	9,5250	3,1750	R166ZZ		RI-6632ZZ	8,72	5,97	712	271
4,7625	12,7000	3,9675	R3	R-3		10,49	7,00	1306	487
4,7625	12,7000	4,9784	R3ZZ		R-3HH	11,00	7,00	1306	487
6,3500	9,5250	3,1750	R168	RI-614		8,63	7,25	417	205
6,3500	9,5250	3,1750	R168ZZ		RI-614ZZ	8,88	7,25	417	205
6,3500	12,7000	3,1750	R188	RI-814		10,98	8,38	828	374
6,3500	12,7000	4,7625	R188ZZ		RI-814ZZ	11,55	8,38	828	374
6,3500	15,8750	4,9784	R4	R-4		13,03	8,20	1470	599
6,3500	15,8750	4,9784	R4ZZ		R-4HH	13,03	8,20	1470	599
6,3500	19,0500	5,5575	R4/A	RI-1214		15,19	9,80	2411	912
6,3500	19,0500	7,1425	R4/AZZ		RI-1214ZZ	16,28	8,63	2411	912
7,9375	12,7000	3,9675	R1810	RI-8516		11,44	9,20	878	419
7,9375	12,7000	3,9675	R1810ZZ		RI-8516ZZ	11,77	9,20	878	419
9,5250	22,2250	5,5575	R6	RI-1438		18,83	13,22	3297	1368
9,5250	22,2250	7,1425	R6ZZ		RI-1438KK	19,08	12,40	3297	1368
12,7000	28,5750	6,3500	R8	RI-1812		24,05	17,18	5113	2387
12,7000	28,5750	7,9375	R8ZZ		RI-1812KK	25,13	16,00	5113	2387