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Needle Roller Bearings, Double Row

BWK double row needle roller bearings use two rows of needle rollers to provide increased radial load capacity, rigidity and stable support in compact assemblies.
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  • NA6900A, NA6901, NA6902A, NA6902A/P6, NA6903A, NA6903A/P6, NA6904A, NA6904, KI21.8X31.8X33.5, NA6905A, NA6906A, NA6907A, NA6909A, NA6910A, NA6911A, NA6912A, NA6913A, NA6914A, NA6915A, NA6916

  • BWK

Product Details

Needle Roller Bearings, Double Row

Double row needle roller bearings provide a larger effective rolling contact area than single row designs. Versions with an inner ring are used where the shaft cannot serve as a raceway, while versions without an inner ring minimize the radial cross section.


Structure and Features

  • Two-row needle roller arrangement

  • High radial load capacity and rigidity

  • Compact design for limited installation space

  • Versions with or without inner rings

  • Suitable for demanding continuous-duty equipment

Series: NA69, RNA69


Applications

Suitable for gearboxes, industrial drives, machine tools, printing machinery and other equipment requiring compact, high-capacity radial bearing support.


微信图片_20260825223547_116_21

Technical Data

Type Shaft Diameter (mm) Current Designation Original Designation Fw/d (mm) D (mm) B/C (mm) Dynamic Load Cr (N) Static Load Cor (N) Grease Speed (rpm) Oil Speed (rpm) Weight (kg)
Double Row Needle Roller Bearing with Inner Ring 10 NA6900A 6534900 10 22 22 8800 11200 14400 21600 0.038
Double Row Needle Roller Bearing with Inner Ring 12 NA6901
12 24 22 9100 12200 13500 20700 0.0479
Double Row Needle Roller Bearing with Inner Ring 15 NA6902A 6534902 15 28 23 10900 16600 12000 18000 0.066
Double Row Needle Roller Bearing with Inner Ring 15 NA6902A/P6 E6534902 15 28 23 10900 16600 12000 18000 0.066
Double Row Needle Roller Bearing with Inner Ring 17 NA6903A 6534903 17 30 23 10400 9400 10000 16000 0.07165
Double Row Needle Roller Bearing with Inner Ring 17 NA6903A/P6 E6534903 17 30 23 11100 17600 10000 16000 0.0717
Double Row Needle Roller Bearing with Inner Ring 20 NA6904A 6534904 20 37 30 22500 38400 9600 14400 0.1
Double Row Needle Roller Bearing with Inner Ring 20 NA6904
20 37 30 35200 48500 9600 14400 0.141
Double Row Needle Roller Bearing with Inner Ring 21.8 KI21.8X31.8X33.5
21.8 31.8 33.5 41500 39800 6660 14400 0.0698
Double Row Needle Roller Bearing with Inner Ring 25 NA6905A 6534905 25 42 30 24600 40300 8500 12400 0.161
Double Row Needle Roller Bearing with Inner Ring 30 NA6906A 6534906 30 47 30 24100 47100 7300 10800 0.192
Double Row Needle Roller Bearing with Inner Ring 35 NA6907A 6534907 35 55 36 36400 74500 6100 9100 0.31
Double Row Needle Roller Bearing with Inner Ring 45 NA6909A 6534909 45 68 40 54900 110400 4900 7300 0.495
Double Row Needle Roller Bearing with Inner Ring 50 NA6910A 6534910 50 72 40 57900 124100 4400 6600 0.515
Double Row Needle Roller Bearing with Inner Ring 55 NA6911A 6534911 55 80 45 65200 148900 4100 6000 0.78
Double Row Needle Roller Bearing with Inner Ring 60 NA6912A 6534912 60 85 45 70000 164500 3800 5600 0.808
Double Row Needle Roller Bearing with Inner Ring 65 NA6913A 6534913 65 90 45 71800 175000 3500 5300 0.833
Double Row Needle Roller Bearing with Inner Ring 70 NA6914A 6534914 70 100 54 89700 242000 3200 4800 1.34
Double Row Needle Roller Bearing with Inner Ring 75 NA6915A 6534915 75 105 54 83100 256800 3000 4500 1.45
Double Row Needle Roller Bearing with Inner Ring 80 NA6916
80 110 54 85000 234900 3200 4800 1.632
Double Row Needle Roller Bearing with Inner Ring 90 NA6918
90 125 63 159000 416000 2300 3500 2.31
Double Row Needle Roller Bearing with Inner Ring 95 NA6919A 6534919 95 130 63 127000 408200 2300 3500 2.5
Double Row Needle Roller Bearing without Inner Ring 12 RNAO122425ZW SZ-427 12 24 25 11900 14000 15300 23200 0.0378
Double Row Needle Roller Bearing without Inner Ring 14.73 RNA14.73X26.7X27.5A/YA SZ-482 14.73 26.7 27.5 10400 16000 14000 21000 0.073
Double Row Needle Roller Bearing without Inner Ring 16 RNA6901A 6634901 16 24 22 9100 12200 13500 20700 0.031
Double Row Needle Roller Bearing without Inner Ring 16 RNA6002A 6634102 20 32 30 23900 34500 12000 18000 0.043
Double Row Needle Roller Bearing without Inner Ring 16 RNA6902A 6634902 20 28 23 10200 17200 12000 18000 0.04
Double Row Needle Roller Bearing without Inner Ring 22 RNA223030AZW 634704 22 30 30 14200 27100 10000 16000 0.051
Double Row Needle Roller Bearing without Inner Ring 22 RNA22X40X36A/P6
22 40 36 29400 36600 9600 16000 0.20604
Double Row Needle Roller Bearing without Inner Ring 22 RNA224036AZW SZ-473 22 40 36 23700 45000 10000 16000 0.217
Double Row Needle Roller Bearing without Inner Ring 24 RNAOV243732ZW 984905 24 37 32 42400 88100 10000 15000 0.1414
Double Row Needle Roller Bearing without Inner Ring 25 RNA6904A 6634904 25 37 30 24400 37600 9600 14400 0.1
Double Row Needle Roller Bearing without Inner Ring 28 RNA283833AZWS SZ-446 28 38 33 20800 40700 9100 13600 0.1
Double Row Needle Roller Bearing without Inner Ring 28 RNA283833AZW SZ-446P 28 38 33 20800 40700 9100 13600 0.1
Double Row Needle Roller Bearing without Inner Ring 30 RNA6905
30 42 30 24600 40300 8500 12400 0.1193
Double Row Needle Roller Bearing without Inner Ring 30 RNA6905A 6634905 30 42 30 24600 40300 8500 13000 0.112
Double Row Needle Roller Bearing without Inner Ring 30 RNAO303736ZW SZ-408 30 37 36 25200 62800 8500 13000 0.079
Double Row Needle Roller Bearing without Inner Ring 35 RNA6906
35 47 30 24100 47100 7300 10800 0.126
Double Row Needle Roller Bearing without Inner Ring 35 RNA6906A 6634906 35 47 30 24100 47100 7300 10800 0.126
Double Row Needle Roller Bearing without Inner Ring 40 RNA69/32A 66349/32 40 52 36 27500 59000 6400 9500 0.162
Double Row Needle Roller Bearing without Inner Ring 42 RNA6907A 6634907 42 55 36 36400 74500 6100 9100 0.193
Double Row Needle Roller Bearing without Inner Ring 52 RNA6909A 6634909 52 68 40 54900 110400 4900 7300 0.338
Double Row Needle Roller Bearing without Inner Ring 58 RNA6910A 6634910 58 72 40 57900 124100 4400 6600 0.31
Double Row Needle Roller Bearing without Inner Ring 63 RNA6911A 6634911 63 80 45 65200 148900 4000 6000 0.47
Double Row Needle Roller Bearing without Inner Ring 65 RNAVP658045 684713 65 80 45 87300 275900 4000 5900 0.7311
Double Row Needle Roller Bearing without Inner Ring 68 RNA6912A 6634912 68 85 45 70000 164500 3800 5600 0.488
Double Row Needle Roller Bearing without Inner Ring 80 RNA6914A 6634914 80 100 54 89700 242000 3200 4800 0.857
Double Row Needle Roller Bearing without Inner Ring 100 RNA6917A 6634917 100 120 63 120600 367800 2600 3800 1.2
Double Row Needle Roller Bearing without Inner Ring 110 RNA6919A 6634919 110 130 63 138300 403000 2300 3500 1.46
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double row needle roller bearing NA69 Bearing RNA69 bearing high load needle bearing compact radial bearing