Double seal

The double sealed needle roller bearing is a derivative of the standard needle roller bearing that integrates a double-sided sealing structure. It is divided into sub types such as stamped outer ring/solid outer ring, no inner ring/with inner ring, contact/non-contact sealing, etc. The double-sided sealing achieves all-round dust prevention, waterproofing, and grease leakage prevention without the need for additional maintenance and grease replenishment. It is suitable for industrial scenarios with harsh sealing requirements such as dust, moisture, and oil pollution. It is the mainstream choice for outdoor/heavy-duty equipment such as construction machinery, agricultural machinery, conveying equipment, and automotive chassis.

Model Basic Dimensions Basic rated dynamic load Weight Type
Inner diameter Outer diameter Thickness Dynamic load Static load
[mm] [mm] [mm] (kN) (kN) （kg）
RNA6912UU 68 85 45 93.4 186 0.505 Double seal
RNA6913UU 72 90 45 97.4 200 0.58 Double seal
RNA6914UU 80 100 54 124 281 0.91 Double seal
RNA6915UU 85 105 54 128 299 0.96 Double seal
RNA6916UU 90 110 54 132 317 1.01 Double seal
RNA6917UU 100 120 63 168 448 1.3 Double seal
RNA6918UU 105 125 63 172 471 1.36 Double seal
RNA6919UU 110 130 63 177 493 1.42 Double seal
NA6900UU 10 22 22 16.3 20.9 0.04 Double seal
NA6901UU 12 24 22 15.5 20.4 0.0455 Double seal
NA6902UU 15 28 23 18.5 27.1 0.0625 Double seal
NA6903UU 17 30 23 19.8 30.6 0.0685 Double seal
NA6904UU 20 37 30 33 44.6 0.137 Double seal
NA69/22UU 22 39 30 33.8 52 0.153 Double seal
NA6905UU 25 42 30 39.2 58.7 0.162 Double seal
NA69/28UU 28 45 30 38.9 59.1 0.177 Double seal
NA6906UU 30 47 30 40.1 63 0.185 Double seal
NA69/32UU 32 52 36 50.3 88.3 0.3 Double seal
NA6907UU 35 55 36 51.6 92.6 0.32 Double seal
NA6908UU 40 62 40 63.7 117 0.44 Double seal