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）
NA6909UU 45 68 40 66.6 127 0.52 Double seal
NA6910UU 50 72 40 70.8 142 0.53 Double seal
NA6911UU 55 80 45 89.4 171 0.73 Double seal
NA6912UU 60 85 45 93.4 186 0.785 Double seal
NA6913UU 65 90 45 97.4 200 0.845 Double seal
NA6914UU 70 100 54 124 281 1.4 Double seal
NA6915UU 75 105 54 128 299 1.48 Double seal
NA6916UU 80 110 54 132 317 1.57 Double seal
NA6917UU 85 120 63 168 448 2.36 Double seal
NA6918UU 90 125 63 172 471 2.48 Double seal
NA6919UU 95 130 63 177 493 2.6 Double seal