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A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter.[1] Like all bearings, they are used to reduce the friction of a rotating surface.
Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes
Application:
1. Wheel and pin bearing is widly applied in packaging machinery, food machinery,
2. Printing machinery, woodworking machinery, textile machinery, light machinery, mining
3. Machinery, engraving machines, automation equipment
Bearing No. | Boundary Dimensions (mm) | Basic Load Rating (KN) | Limited Speed | Mass | |||
Fw | Ew | Bc | C | Co | rpm | kg | |
K 3X5X7 TN | 3 | 5 | 7 | 1.232 | 1.032 | 40000 | 0.0003 |
K 3X5X9 TN | 3 | 5 | 9 | 1.368 | 1.184 | 40000 | 0.0004 |
K 3X6X7 TN | 3 | 6 | 7 | 1.144 | 0.776 | 37600 | 0.0004 |
K 4X7X7 TN | 4 | 7 | 7 | 1.392 | 1.016 | 34400 | 0.0005 |
K 4X7X10 TN | 4 | 7 | 10 | 1.864 | 1.472 | 34400 | 0.0007 |
K 5X8X8 TN | 5 | 8 | 8 | 1.880 | 1.536 | 31200 | 0.0007 |
K 5X8X10 TN | 5 | 8 | 10 | 2.400 | 2.120 | 31200 | 0.0009 |
K 6X9X8 TN | 6 | 9 | 8 | 2.080 | 1.824 | 29600 | 0.0008 |
K 6X9X10 TN | 6 | 9 | 10 | 2.680 | 5.520 | 29600 | 0.0011 |
K 6X10X13 TN | 6 | 10 | 13 | 3.040 | 2.480 | 28000 | 0.0019 |
K 7X9X7 TN | 7 | 9 | 7 | 1.384 | 1.416 | 28000 | 0.0006 |
K 7X10X8 | 7 | 10 | 8 | 2.280 | 2.120 | 27200 | 0.0017 |
K 8X11X8 | 8 | 11 | 8 | 2.480 | 2.400 | 25600 | 0.0018 |
K 8X11X10 | 8 | 11 | 10 | 3.160 | 3.280 | 25600 | 0.0020 |
K 8X11X13 | 8 | 11 | 13 | 4.080 | 4.640 | 25600 | 0.0032 |
K 8X12X10 | 8 | 12 | 10 | 4.000 | 3.760 | 25600 | 0.0035 |
K 9X12X10 | 9 | 12 | 10 | 3.600 | 4.000 | 24800 | 0.0029 |
K 9X12X13 | 9 | 12 | 13 | 4.720 | 5.680 | 24800 | 0.0038 |
K 10X13X10 | 10 | 13 | 10 | 3.800 | 4.400 | 23200 | 0.0032 |
K 10X13X13 | 10 | 13 | 13 | 4.960 | 6.240 | 23200 | 0.0041 |
K 10X13X16 | 10 | 13 | 16 | 5.680 | 7.440 | 23200 | 0.0051 |
K 10X14X10 | 10 | 14 | 10 | 4.640 | 4.800 | 23200 | 0.0041 |
K 10X16X12 | 10 | 16 | 12 | 6.480 | 5.760 | 22400 | 0.0081 |
K 12X15X10 | 12 | 15 | 10 | 3.920 | 4.880 | 21600 | 0.0035 |
K 12X15X13 | 12 | 15 | 13 | 5.120 | 6.800 | 21600 | 0.0045 |
K 12X16X13 | 12 | 16 | 13 | 6.400 | 7.520 | 21600 | 0.0063 |
K 12X17X13 | 12 | 17 | 13 | 7.680 | 8.320 | 20800 | 0.0081 |
K 12X18X12 | 12 | 18 | 12 | 8.000 | 7.920 | 20800 | 0.0093 |
K 14X18X10 | 14 | 18 | 10 | 5.680 | 6.800 | 20000 | 0.0040 |
K 14X18X13 | 14 | 18 | 13 | 6.560 | 8.080 | 20000 | 0.0065 |
K 14X18X15 | 14 | 18 | 15 | 7.600 | 9.840 | 20000 | 0.0083 |
K 14X18X17 | 14 | 18 | 17 | 8.640 | 11.520 | 20000 | 0.0080 |
K 14X20X12 | 14 | 20 | 12 | 8.240 | 8.480 | 19200 | 0.0085 |
K 15X18X17 | 15 | 18 | 17 | 6.400 | 9.680 | 20000 | 0.0072 |
K 15X19X10 | 15 | 19 | 10 | 6.000 | 7.360 | 19200 | 0.0050 |
K 15X19X13 | 15 | 19 | 13 | 6.800 | 8.720 | 19200 | 0.0070 |
K 15X19X17 | 15 | 19 | 17 | 9.040 | 12.480 | 19200 | 0.0095 |
K 15X20X13 | 15 | 20 | 13 | 7.920 | 9.200 | 19200 | 0.0070 |
K 15X21X15 | 15 | 21 | 15 | 11.440 | 13.120 | 19200 | 0.0110 |
K 15X21X21 | 15 | 21 | 21 | 15.520 | 19.440 | 19200 | 0.0170 |
K 16X20X10 | 16 | 20 | 10 | 6.240 | 7.920 | 19200 | 0.0055 |
K 16X20X13 | 16 | 20 | 13 | 7.120 | 9.440 | 19200 | 0.0075 |
K 16X20X17 | 16 | 20 | 17 | 9.360 | 13.440 | 19200 | 0.0100 |
K 16X22X12 | 16 | 22 | 12 | 9.200 | 10.000 | 18400 | 0.0100 |
K 16X22X16 | 16 | 22 | 16 | 11.840 | 14.000 | 18400 | 0.0120 |
K 16X22X20 | 16 | 22 | 20 | 16.640 | 18.240 | 18400 | 0.0170 |
K 16X24X20 | 16 | 24 | 20 | 17.120 | 18.800 | 17600 | 0.0220 |
K 17X21X10 | 17 | 21 | 10 | 6.480 | 8.480 | 18400 | 0.0055 |
K 17X21X13 | 17 | 21 | 13 | 8.320 | 11.680 | 18400 | 0.0065 |
K 17X21X17 | 17 | 21 | 17 | 9.760 | 14.320 | 18400 | 0.0095 |
K 18X22X10 | 18 | 22 | 10 | 6.720 | 9.040 | 17600 | 0.0060 |
K 18X22X13 | 18 | 22 | 13 | 7.360 | 10.160 | 17600 | 0.0080 |
K 18X22X17 | 18 | 22 | 17 | 9.680 | 14.400 | 17600 | 0.0110 |
K 18X24X12 | 18 | 24 | 12 | 10.240 | 11.920 | 17600 | 0.0120 |
K 18X24X13 | 18 | 24 | 13 | 10.480 | 12.240 | 17600 | 0.0130 |
K 18X25X22 | 18 | 25 | 22 | 18.480 | 23.200 | 17600 | 0.0230 |
K 19X23X13 | 19 | 23 | 13 | 7.600 | 10.800 | 17600 | 0.0080 |
K 19X23X17 | 19 | 23 | 17 | 10.000 | 15.360 | 17600 | 0.0110 |
K 20X24X10 | 20 | 24 | 10 | 7.120 | 10.080 | 16800 | 0.0065 |
K 20X24X13 | 20 | 24 | 13 | 7.840 | 11.440 | 16800 | 0.0090 |
K 20X24X17 | 20 | 24 | 17 | 10.320 | 16.320 | 16800 | 0.0120 |
K 20X26X12 | 20 | 26 | 12 | 10.720 | 12.960 | 16800 | 0.0110 |
K 20X26X13 | 20 | 26 | 13 | 11.520 | 14.320 | 16800 | 0.0120 |
K 20X26X17 | 20 | 26 | 17 | 15.360 | 20.800 | 16800 | 0.0160 |
K 20X26X20 | 20 | 26 | 20 | 16.880 | 23.200 | 16800 | 0.0190 |
K 20X28X16 | 20 | 28 | 16 | 15.840 | 17.920 | 16000 | 0.0200 |
K 20X28X20 | 20 | 28 | 20 | 19.120 | 22.800 | 16000 | 0.0270 |
K 20X28X25 | 20 | 28 | 25 | 24.400 | 31.200 | 16000 | 0.0320 |
K 20X30X30 | 20 | 30 | 30 | 28.400 | 33.200 | 16000 | 0.0490 |
K 21X25X13 | 21 | 25 | 13 | 8.080 | 12.080 | 16800 | 0.0090 |
K 22X26X10 | 22 | 26 | 10 | 7.280 | 10.720 | 16000 | 0.0075 |
K 22X26X13 | 22 |
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