1. Precision: ABEC-3, ABEC-5, ABEC-7
2, Vibration level codes: V3, V2, V1
3. Internal clearance codes: C0, C2, C3, C4, C5
1)Shield / closure: Open, Teflon Sealed, Rubber Seals, 2 Metal Shield
2)Tolerance codes: ABEC-1, ABEC-3, ABEC-5, ABEC-7
3)Vibration level codes: V4, V3, V2, V1
4)nternal clearance codes: C0, C2, C3, C4, C5
5)Material: AISI52100, AISI440C, AISI304, AISI316, Ceramic
6)Retainer: PTFE, Nylon, PEEK Or Stainless Steel
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Bearing modle			Boundary dimension
			d	D	Df	B	Bf
Flange	Open	Shield	mm	mm	mm	mm	mm
F	681	-	1	3	3.8	1	0.3
F	691	-	1	4	5	1.6	0.5
F	681X	ZZ	1.5	4	5	1.2	0.4
F	691X	ZZ	1.5	5	6.5	2	0.6
F	601X	ZZ	1.5	6	7.5	2.5	0.6
F	682	ZZ	2	5	6.1	1.5	0.5
F	692	ZZ	2	6	7.5	2.3	0.6
F	602	ZZ	2	7	8.5	2.8	0.7
F	682X	ZZ	2.5	6	7.1	1.8	0.5
F	692X	ZZ	2.5	7	8.5	2.5	0.7
F	602X	ZZ	2.5	8	9.5	2.8	0.7
F	683	ZZ	3	7	8.1	2	0.5
F	693	ZZ	3	8	9.5	3	0.7
F	603	ZZ	3	9	10.5	3	0.7
F	623	ZZ	3	10	11.5	4	1
-	633	ZZ	3	13	-	5	-
F	684	ZZ	4	9	10.3	2.5	0.6
F	694	ZZ	4	11	12.5	4	1
F	604	ZZ	4	12	13.5	4	1
F	624	ZZ	4	13	15	5	1
F	634	ZZ	4	16	18	5	1
F	685	ZZ	5	11	12.5	3	0.8
F	695	ZZ	5	13	15	4	1
F	605	ZZ	5	14	16	5	1
F	625	ZZ	5	16	18	5	1
F	635	ZZ	5	19	22	6	1.5
F	686	ZZ	6	13	15	3.5	1
F	696	ZZ	6	15	17	5	1.2
F	606	ZZ	6	17	19	6	1.2
F	626	ZZ	6	19	22	6	1.5
-	636	ZZ	6	22	-	7	-
F	687	ZZ	7	14	16	3.5	1
F	697	ZZ	7	17	19	5	1.2
F	607	ZZ	7	19	22	6	1.5
F	627	ZZ	7	22	25	7	1.5
-	637	ZZ	7	26	-	9	-
F	688	ZZ	8	16	18	4	1
F	698	ZZ	8	19	22	6	1.5
F	608	ZZ	8	22	25	7	1.5
-	628	ZZ	8	24	-	8	-
-	638	ZZ	8	28	-	9	-
F	689	ZZ	9	17	19	4	1
F	699	ZZ	9	20	23	6	1.5
F	609	ZZ	9	24	27	7	1.5
-	629	ZZ	9	26	-	8	-
-	639	ZZ	9	30	-	10	-