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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.

InquiryPart NumberIDODWidthShield TypeDynamic LoadStatic LoadMax Speed(X1K rpm)Ring MaterialTemperature RangePrecisionClearanceRoHSREACH
MR148 8 mm 14 mm 3.5 mm Open 174 N 77 N 30.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR128 2RS 8 mm 12 mm 3.5 mm Sealed 116 N 55 N 32 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR128 8 mm 12 mm 2.5 mm Open 116 N 55 N 32 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
698 2RS 8 mm 19 mm 6 mm Sealed 476 N 184 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
698 8 mm 19 mm 6 mm Open 476 N 184 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
688 2RS 8 mm 16 mm 5 mm Sealed 266 N 118 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
688 8 mm 16 mm 4 mm Open 266 N 118 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
638 2RS 8 mm 28 mm 9 mm Sealed 970 N 396 N 22.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
638 8 mm 28 mm 9 mm Open 970 N 396 N 22.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
628 2RS 8 mm 24 mm 8 mm Sealed 708 N 284 N 22.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
628 8 mm 24 mm 8 mm Open 708 N 284 N 22.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
608 2RS 8 mm 22 mm 7 mm Sealed 700 N 276 N 27.2 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
608 8 mm 22 mm 7 mm Open 700 N 276 N 27.2 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR137 2RS 7 mm 13 mm 4 mm Sealed 115 N 55 N 32 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR137 7 mm 13 mm 3 mm Open 115 N 55 N 32 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR117 2RS 7 mm 11 mm 3 mm Sealed 97 N 40 N 34.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR117 7 mm 11 mm 2.5 mm Open 97 N 40 N 34.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
697 2RS 7 mm 17 mm 5 mm Sealed 341 N 144 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
697 7 mm 17 mm 5 mm Open 341 N 144 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
687 2RS 7 mm 14 mm 5 mm Sealed 249 N 102 N 32 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
687 7 mm 14 mm 3.5 mm Open 249 N 102 N 32 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
637 2RS 7 mm 26 mm 9 mm Sealed 970 N 396 N 22.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
637 7 mm 26 mm 9 mm Open 970 N 396 N 22.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
627 2RS 7 mm 22 mm 7 mm Sealed 698 N 276 N 24 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
627 7 mm 22 mm 7 mm Open 698 N 276 N 24 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
607 2RS 7 mm 19 mm 6 mm Sealed 496 N 179 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
607 7 mm 19 mm 6 mm Open 496 N 179 N 28.8 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR126 2RS 6 mm 12 mm 4 mm Sealed 152 N 59 N 34.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR126 6 mm 12 mm 3 mm Open 152 N 59 N 34.4 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
MR106 2RS 6 mm 10 mm 3 mm Sealed 106 N 44 N 36 Silicon Nitride ﹣176 to 1472 °F ABEC-1 C0 Compliant Compliant
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