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）
RNA4900UU 14 22 13 8 8.5 0.016 Double seal
RNA4901UU 16 24 13 8.4 9.3 0.018 Double seal
RNA4904UU 25 37 17 17.9 20.5 0.055 Double seal
RNA49/14UU 18 26 13 9.26 10.8 0.0197 Double seal
RNA4902UU 20 28 13 9.6 11.7 0.022 Double seal
RNA4903UU 22 30 13 10.3 13.1 0.023 Double seal
RNA49/22UU 28 39 17 18.3 23.7 0.0555 Double seal
RNA4905UU 30 42 17 20.3 25.1 0.063 Double seal
RNA49/28UU 32 45 17 21 26.8 0.0755 Double seal
RNA4906UU 35 47 17 21.6 28.4 0.071 Double seal
RNA49/32UU 40 52 20 29.4 44.2 0.0945 Double seal
RNA4907UU 42 55 20 30.1 46.3 0.11 Double seal
RNA49/38UU 45 58 20 31.6 50.4 0.119 Double seal
RNA4908UU 48 62 22 37.2 58.3 0.15 Double seal
RNA49/42UU 50 65 22 38 60.9 0.173 Double seal
RNA4909UU 52 68 22 38.8 63.4 0.19 Double seal
RNA49/48UU 55 70 22 39.6 66.1 0.187 Double seal
RNA4910UU 58 72 22 41.3 71.1 0.18 Double seal
RNA49/52UU 60 75 22 42.1 73.6 0.2 Double seal
RNA4911UU 63 80 25 52.2 85.7 0.265 Double seal