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）
RNA49/58UU 65 82 25 53.4 89.2 0.275 Double seal
RNA4912UU 68 85 25 54.5 92.8 0.285 Double seal
RNA49/62UU 70 88 25 55.7 96.3 0.32 Double seal
RNA4913UU 72 90 25 56.8 99.8 0.325 Double seal
RNA49/68UU 75 95 30 73.9 133 0.465 Double seal
RNA4914UU 80 100 30 76.9 143 0.495 Double seal
RNA4915UU 85 105 30 79.6 153 0.52 Double seal
RNA4916UU 90 110 30 80.7 158 0.545 Double seal
RNA49/82UU 95 115 30 83.2 168 0.57 Double seal
RNA4917UU 100 120 35 103 225 0.695 Double seal
RNA4918UU 105 125 35 106 238 0.73 Double seal
RNA4919UU 110 130 35 109 250 0.76 Double seal
RNA4920UU 115 140 40 134 297 1.2 Double seal
RNA4922UU 125 150 40 140 322 1.28 Double seal
RNA4924UU 135 165 45 178 410 1.94 Double seal
RNA4926UU 150 180 50 206 511 2.36 Double seal
RNA4928UU 160 190 50 214 549 2.51 Double seal
NA4900UU 10 22 13 8 8.5 0.0245 Double seal
NA4901UU 12 24 13 8.4 9.3 0.0275 Double seal
NA4904UU 20 37 17 17.9 20.5 0.0785 Double seal