>> P.200
rrCBFwDdrrNA49 … UUNA69 … UU(d≦30)With Seal, With Inner RingMACHINED TYPE NEEDLE ROLLER BEARINGSShaft dia. 10-40mmShaft dia.mm101215172022252830323540Identification numberMass (Ref.)Boundary dimensionsmmWith two sealsWith one sealWith two sealsWith one sealNA 4900UUNA 4900U──NA 4901UU─NA 4902UU─NA 4903UU─NA 4904UU─NA 4901U─NA 4902U─NA 4903U─NA 4904U──NA 6901UU─NA 6902UU─NA 6903UU─NA 6904UU─NA 6901U─NA 6902U─NA 6903U─NA 6904Ug24.527.545.53662.539.568.578.5 137NA 49/22UU─NA 49/22U──NA 69/22UU─NA 69/22U87.5 153NA 4905UU─NA 4905U──NA 6905UU─NA 6905UNA 49/28UU─NA 49/28U──NA 69/28UU─NA 69/28UNA 4906UU─NA 4906U──NA 6906UU─NA 6906UNA 49/32UU─NA 49/32U──NA 69/32UU─NA 69/32UNA 4907UU─NA 4908UU─NA 4907U─NA 4908U──NA 6907UU─NA 6908UU─NA 6907U─NA 6908U92.5 162 101 177 106 185 167 300 179 320 245 440dDCB1012121515171720202222252528283030323235354040222424282830303737393942424545474752525555626213132213231323173017301730173017302036203622401414231424142418311831183118311831213721372341Notes(1)Minimum allowable value of chamfer dimension r (2)Allowable rotational speed applies to grease lubrication.Remarks1.The outer ring has an oil groove and an oil hole.2. earings are provided with prepacked grease. Bearings with a seal on one side are not provided with prepacked grease. Perform proper lubrication for use.D61
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