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Silicon Nitride Ceramic Bearings Metric Size

Precision-engineered for high-speed, high-load applications with superior thermal shock resistance. Ideal for aerospace, industrial, and automotive systems requiring metric dimensions and unmatched durability.

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Inquiry	Part Number	ID	OD	Width	Shield Type	Dynamic Load	Static Load	Max Speed(X1K rpm)	Ring Material	Temperature Range	Precision	Clearance	RoHS	REACH
	MR84	4 mm	8 mm	2 mm	Open	84 N	28 N	44.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR74 2RS	4 mm	7 mm	2.5 mm	Sealed	54 N	22 N	48	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR74	4 mm	7 mm	2 mm	Open	66 N	23 N	48	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR104 2RS	4 mm	10 mm	4 mm	Sealed	151 N	54 N	38.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR104	4 mm	10 mm	3 mm	Open	151 N	54 N	38.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	694 2RS	4 mm	11 mm	4 mm	Sealed	204 N	70 N	38.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	694	4 mm	11 mm	4 mm	Open	204 N	70 N	38.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	684 2RS	4 mm	9 mm	4 mm	Sealed	136 N	46 N	42.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	684	4 mm	9 mm	2.5 mm	Open	136 N	46 N	42.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	634 2RS	4 mm	16 mm	5 mm	Sealed	285 N	104 N	28.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	634	4 mm	16 mm	5 mm	Open	285 N	104 N	28.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	624 2RS	4 mm	13 mm	5 mm	Sealed	276 N	98 N	32	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	624	4 mm	13 mm	5 mm	Open	276 N	98 N	32	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	604 2RS	4 mm	12 mm	4 mm	Sealed	204 N	70 N	38.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	604	4 mm	12 mm	4 mm	Open	204 N	70 N	38.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR93 2RS	3 mm	9 mm	4 mm	Sealed	121 N	38 N	44.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR93	3 mm	9 mm	2.5 mm	Open	121 N	38 N	44.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR83 2RS	3 mm	8 mm	3 mm	Sealed	84 N	28 N	48	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR83	3 mm	8 mm	2.5 mm	Open	84 N	28 N	48	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR63 2RS	3 mm	6 mm	2.5 mm	Sealed	44 N	15 N	56.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	MR63	3 mm	6 mm	2 mm	Open	44 N	15 N	56.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	693 2RS	3 mm	8 mm	4 mm	Sealed	118 N	36 N	48	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	693	3 mm	8 mm	3 mm	Open	118 N	36 N	48	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	683 2RS	3 mm	7 mm	3 mm	Sealed	66 N	22 N	50.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	683	3 mm	7 mm	2 mm	Open	66 N	22 N	50.4	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	633 2RS	3 mm	13 mm	5 mm	Sealed	276 N	98 N	32	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	633	3 mm	13 mm	5 mm	Open	276 N	98 N	32	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	623 2RS	3 mm	10 mm	4 mm	Sealed	134 N	44 N	40	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	623	3 mm	10 mm	4 mm	Open	134 N	44 N	40	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
	603 2RS	3 mm	9 mm	5 mm	Sealed	58 N	38 N	44.8	Silicon Nitride	﹣176 to 1472 °F	ABEC-1	C0	Compliant	Compliant
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