changzhou zhihua bearings co., ltd.czzhihua.com/templates/zhihuazhoucheng/pdf/heavy-duty needle...

Changzhou Zhihua Bearings Co., Ltd. HEAVYDUTY NEEDLE ROLLER BEARINGS

Changzhou Zhihua Bearings Co., Ltd. ADDR: Private Industrial Park, Niutang Town, Changzhou City 213163, China TEL: + 86‐519‐86576751/86380158 FAX: + 86‐519‐86568019 WEB: www.czzhihua.com E‐mail: [email protected] 1

OVERVIEW: Heavy‐duty Needle roller bearings consist of a machined and ground channel‐shaped outer ring with a

component of needle rollers retained and guided by a cage. The high‐strength cage retains and guides the rollers. An

optional groove and hole in the outer ring facilitate relubrication. These bearings can be used with or without a machined or

ground inner ring, depending on the suitability of the shaft as a raceway surface.

APPLICATIONS: Gear pumps, sheaves, automotives transmissions and two‐cycle engines.

TYPES: With flanges ‐ NK/NKI/NKS/NKIS/NA48/RNA48/NA49/RNA49/NA69/RNA69, without flanges ‐ NAO/RNAO

1. MOUNTING DIMENSIONS

It is suggested that needle roller bearings are mounted in their housings with a clearance fit if the load is stationary relative

to the housing, or with a tight transition fit if the load rotates relative to the housing. Table 1 lists the suggested tolerances for the housing bore and the shaft raceway for metric series

bearings without inner rings. Table 2 lists the suggested shaft tolerances for the above two mounting conditions when the metric series bearings are used with inner rings. The

suggested housing bore tolerances for metric series bearings with inner rings is the same as the housing bore tolerance listed in Table 1 for metric series bearings without inner rings.

Table 3 lists the tolerances of metric series caged needle roller complement bore diameter for bearings without inner rings.

Table1. MOUNTING TOLERANCES FOR METRIC SERIES BEARINGS WITHOUT INNER RING

Rotation conditions

Nominal housing borediameter D

ISO tolerance zone for housing

Nominal shaft

diameter F

ISO tolerancezone for shaft

mm caged full mm caged full

Load stationary relative to housing

All diameters H7 J6 All diameters h6 h5

General work with

lager clearance

All diameters K7 ‐ All diameters g6 ‐

Load rotates

relative to housing

All diameters N7 M6 All diameters f6 g5

Table3. METRIC SERIES CAGED NEEDLE ROLLER COMPLEMENT BORE DIAMETER FOR BEARINGS WITHOUT INNER RINGS

mm µm > ≤ low high

Fw ∆ Fw min 3 6 +10 +18 6 10 +13 +22 10 18 +16 +27 18 30 +20 +33 30 50 +25 +41 50 80 +30 +49 80 120 +36 +58 120 180 +43 +68 180 250 +50 +79 250 315 +56 +88 315 400 +62 +98

Table2. SHAFT TOLERANCES FOR METRIC SERIES BEARINGS WITH INNER RING

Rotation conditions

Nominal shaft

diameter d

ISO tolerance zone for shaft

mm caged full

Load stationary relative to housing

> ≤ 40 k6 k5 40 100 M6 M5 100 140 M6 M5 140 n6 n6

Load rotates

relative to housing

All diameters g6 h5(h6)


Heavy‐duty Needle Roller Bearings Metric Series

With Flanges With Inner Ring (NKI, NA48, NA49, NA69, NKIS) Without Inner Ring (NK, RNA48, RNA49, RNA69, NKS)

Suffix: RS — One Seal 2RS — Two Seals TN — Plastic Cage


Bearing

Designation

Dimensions(mm) Load Rating(kN) Limiting Speed(RPM) Mass(kg)

Fw D C Dynamic Static Oil Approx.

NKI 5/12 5 15 12 4.45 4.10 32500 0.011

NKI 5/16 5 15 16 5.80 5.80 32500 0.015

NKI 6/12 6 16 12 5.10 5.00 31000 0.013

NKI 6/16 6 16 16 6.60 7.10 31000 0.017

NKI 7/12 7 17 12 5.30 5.50 29500 0.014

NKI 7/16 7 17 16 7.00 7.80 29500 0.018

NKI 9/12 9 19 12 7.20 7.10 26500 0.017

NKI 9/16 9 19 16 10.10 11.00 26500 0.022

NKI 10/16 10 22 16 11.40 11.50 24600 0.029

NKI 10/20 10 22 20 14.50 15.60 24600 0.037

NKI 12/16 12 24 16 12.80 13.90 23200 0.033

NKI 12/20 12 24 20 16.30 18.80 23200 0.042

NKI 15/16 15 27 16 14.70 17.40 21600 0.039

NKI 15/20 15 27 20 18.70 23.60 21600 0.049

NKI 17/16 17 29 16 15.20 18.70 20600 0.042

NKI 17/20 17 29 20 19.30 25.50 20600 0.053

NKI 20/16 20 32 16 16.90 22.30 18500 0.049

Bearing

Designation



NKI 20/20 20 32 20 21.40 30.50 18500 0.061

NKI 22/16 22 34 16 17.30 23.60 17200 0.052

NKI 22/20 22 34 20 22.00 32.00 17200 0.065

NKI 25/20 25 38 20 27.50 39.00 15300 0.076

NKI 25/30 25 38 30 37.00 57.00 15300 0.124

NKI 28/20 28 42 20 29.50 44.50 14000 0.092

NKI 28/30 28 42 30 39.00 63.00 14000 0.146

NKI 30/20 30 45 20 31.00 48.50 12900 0.108

NKI 30/30 30 45 30 46.00 81.00 12900 0.165

NKI 32/20 32 47 20 28.00 43.50 12300 0.118

NKI 32/30 32 47 30 42.00 73.00 12300 0.180

NKI 35/20 35 50 20 33.50 56.00 11400 0.122

NKI 35/30 35 50 30 44.00 79.00 11400 0.193

NKI 38/20 38 53 20 30.50 51.00 10700 0.136

NKI 38/30 38 53 30 45.50 85.00 10700 0.207

NKI 40/20 40 55 20 35.00 62.00 10200 0.136

NKI 40/30 40 55 30 52.00 103.0 10200 0.216






Bearing

Designation



NKI 70/35 70 95 35 89.00 184.0 5800 0.737

NKI 75/25 75 105 25 78.00 123.0 5400 0.641

NKI 75/35 75 105 35 111.0 193.0 5400 0.908

NKI 80/25 80 110 25 81.00 132.0 5100 0.677

NKI 80/35 80 110 35 116.0 208.0 5100 0.959

NKI 85/26 85 115 26 83.00 137.0 4850 0.743

NKI 85/36 85 115 36 121.0 223.0 4850 1.040

NKI 90/26 90 120 26 86.00 146.0 4600 0.778

NKI 90/36 90 120 36 125.0 237.0 4600 1.090

NKI 95/26 95 125 26 89.00 155.0 4400 0.816

NKI 95/36 95 125 36 129.0 250.0 4400 1.145

NKI 100/30 100 130 30 111.0 210.0 4200 0.990

NKI 100/40 100 130 40 143.0 290.0 4200 1.330

Bearing

Designation



NKI 42/20 42 57 20 32.50 56.00 9800 0.148

NKI 42/30 42 57 30 48.50 94.00 9800 0.222

NKI 45/25 45 62 25 48.50 87.00 9200 0.217

NKI 45/35 45 62 35 67.00 132.0 9200 0.308

NKI 50/25 50 68 25 45.50 82.00 8400 0.270

NKI 50/35 50 68 35 60.00 118.0 8400 0.379

NKI 55/25 55 72 25 53.00 103.0 7700 0.255

NKI 55/35 55 72 35 63.00 130.0 7700 0.379

NKI 60/25 60 82 25 49.50 89.00 6800 0.394

NKI 60/35 60 82 35 70.00 139.0 6800 0.553

NKI 65/25 65 90 25 60.00 100.0 6300 0.467

NKI 65/35 65 90 35 85.00 156.0 6300 0.659

NKI 70/25 70 95 25 63.00 119.0 5800 0.521






Bearing

Designation



NA 4822 110 140 30 106.0 216.0 3900 1.080

NA 4824 120 150 30 112.0 239.0 3650 1.170

NA 4826 130 165 35 134.0 310.0 3300 1.810

NA 4828 140 175 35 136.0 325.0 3100 1.920

NA 4830 150 190 40 172.0 400.0 2900 2.720

NA 4832 160 200 40 181.0 435.0 2700 2.890

NA 4834 170 215 45 209.0 510.0 2550 3.960

NA 4836 180 225 45 219.0 550.0 2420 4.200

NA 4838 190 240 50 255.0 690.0 2280 5.610

NA 4840 200 250 50 260.0 720.0 2150 5.840

Bearing

Designation



NA 4844 220 270 50 275.0 790.0 1980 6.380

NA 4848 240 300 60 400.0 1080 1780 10.00

NA 4852 260 320 60 415.0 1160 1660 10.60

NA 4856 280 350 69 510.0 1300 1540 15.30

NA 4860 300 380 80 700.0 1770 1420 21.80

NA 4864 320 400 80 710.0 1850 1340 23.00

NA 4868 340 420 80 730.0 1940 1270 24.20

NA 4872 360 440 80 740.0 2020 1210 25.60

NA 4876 380 480 100 1130 2900 1130 42.60






Bearing

Designation



NA 4900 10 22 13 9.60 9.20 25000 0.023

NA 4901 12 24 13 10.60 10.90 23600 0.026

NA 4902 15 28 13 12.00 13.60 21600 0.034

NA 4903 17 30 13 12.40 14.60 20600 0.037

NA 4904 20 37 17 23.70 25.50 17200 0.075

NA 49/22 22 39 17 26.00 29.50 16100 0.080

NA 4905 25 42 17 26.50 31.50 14600 0.088

NA 49/28 28 45 17 27.50 33.50 13400 0.098

NA 4906 30 47 17 28.50 35.50 12700 0.101

NA 49/32 32 52 20 34.50 47.50 11700 0.158

NA 4907 35 55 20 35.50 50.00 10900 0.170

NA 4908 40 62 22 48.50 67.00 9600 0.230

NA 4909 45 68 22 51.00 73.00 8700 0.271

NA 4910 50 72 22 53.00 80.00 8000 0.274

Bearing

Designation



NA 4911 55 80 25 65.00 100.0 7300 0.393

NA 4912 60 85 25 68.00 108.0 6800 0.426

NA 4913 65 90 25 69.00 112.0 6300 0.456

NA 4914 70 100 30 95.00 156.0 5800 0.728

NA 4915 75 105 30 97.00 162.0 5400 0.775

NA 4916 80 110 30 101.0 174.0 5200 0.878

NA 4917 85 120 35 125.0 237.0 4800 1.250

NA 4918 90 125 35 129.0 250.0 4550 1.312

NA 4919 95 130 35 131.0 260.0 4350 1.371

NA 4920 100 140 40 144.0 270.0 4100 1.900

NA 4922 110 150 40 149.0 290.0 3750 2.070

NA 4924 120 165 45 205.0 390.0 3450 2.860

NA 4926 130 180 50 229.0 470.0 3150 3.900

NA 4928 140 190 50 237.0 500.0 2950 4.150






Bearing

Designation



NA 6908 40 62 40 71.00 116.0 9600 0.430

NA 6909 45 68 40 79.00 127.0 8700 0.495

NA 6910 50 72 40 82.00 139.0 8000 0.515

NA 6911 55 80 45 102.0 176.0 7300 0.780

NA 6912 60 85 45 106.0 191.0 6800 0.808

NA 6913 65 90 45 108.0 198.0 6300 0.833

NA 6914 70 100 54 145.0 265.0 5800 1.340

NA 6915 75 105 54 147.0 275.0 5400 1.450

NA 6916 80 110 54 153.0 300.0 5200 1.522

NA 6917 85 120 63 188.0 400.0 4800 2.20

NA 6918 90 125 63 195.0 425.0 4550 2.310

NA 6919 95 130 63 197.0 440.0 4350 2.500

Bearing

Designation



Single Row

NA 6901 12 24 22 18.10 21.60 23600 0.046

NA 6902 15 28 23 19.50 25.50 21600 0.064

NA 6903 17 30 23 21.10 29.00 20600 0.072

NA 6904 20 37 30 4.50 51.00 17200 0.141

NA 69/22 22 39 30 42.00 55.00 16100 0.150

NA 6905 25 42 30 44.00 59.00 14600 0.161

NA 69/28 28 45 30 45.50 63.00 13400 0.182

NA 6906 30 47 30 49.00 71.00 12700 0.192

Double Row

NA 69/32 32 52 36 53.00 82.00 11700 0.288

NA 6907 35 55 36 54.00 86.00 10900 0.310






Bearing

Designation



NKIS 15 15 35 20 27.50 28.00 19600 0.092

NKIS 17 17 37 20 29.50 31.00 18100 0.098

NKIS 20 20 42 20 32.50 36.50 15800 0.129

NKIS 25 25 47 22 38.00 43.50 13600 0.162

NKIS 30 30 52 22 41.50 50.00 12000 0.184

NKIS 35 35 58 22 44.00 57.00 10500 0.220

Bearing

Designation



NKIS 40 40 65 22 48.00 67.00 9300 0.281

NKIS 45 45 72 22 51.00 74.00 8400 0.336

NKIS 50 50 80 28 71.00 98.00 7500 0.518

NKIS 55 55 85 28 75.00 108.0 7000 0.558

NKIS 60 60 90 28 77.00 113.0 6500 0.560

NKIS 65 65 95 28 81.00 123.0 6100 0.641






Bearing

Designation



NK 15/20 15 23 20 15.40 17.20 23900 0.027

NK 16/16 16 24 16 12.80 13.90 23200 0.022

NK 16/20 16 24 20 16.30 18.80 23200 0.028

NK 17/16 17 25 16 13.50 15.00 22600 0.024

NK 17/20 17 25 20 17.10 20.40 22600 0.030

NK 18/16 18 26 16 14.10 16.20 22100 0.025

NK 18/20 18 26 20 17.90 22.00 22100 0.031

NK 19/16 19 27 16 14.70 17.40 21600 0.026

NK 19/20 19 27 20 18.70 23.60 21600 0.032

NK 20/16 20 28 16 14.60 17.50 21100 0.027

NK 20/20 20 28 20 18.60 23.80 21100 0.034

NK 21/16 21 29 16 15.20 18.70 20600 0.028

NK 21/20 21 29 20 19.30 25.50 20600 0.035

NK 22/16 22 30 16 15.80 19.90 20000 0.030

NK 22/20 22 30 20 20.00 27.00 20000 0.037

NK 24/16 24 32 16 16.90 22.30 18500 0.032

NK 24/20 24 32 20 21.40 30.50 18500 0.040

Bearing

Designation



NK 5/10 5 10 10 2.65 1.92 39000 0.003

NK 5/12 5 10 12 3.40 2.65 39000 0.004

NK 6/10 6 12 10 2.95 2.28 36500 0.005

NK 6/12 6 12 12 3.80 3.15 36500 0.006

NK 7/10 7 14 10 3.25 2.65 34500 0.007

NK 7/12 7 14 12 4.15 3.60 34500 0.008

NK 8/12 8 15 12 4.45 4.10 32500 0.009

NK 8/16 8 15 16 5.80 5.80 32500 0.012

NK 9/12 9 16 12 5.10 5.00 31000 0.010

NK 9/16 9 16 16 6.60 7.10 31000 0.013

NK 10/12 10 17 12 5.30 5.50 29500 0.010

NK 10/16 10 17 16 7.00 7.80 29500 0.013

NK 12/12 12 19 12 7.20 7.10 26500 0.012

NK 12/16 12 19 16 10.10 11.00 26500 0.016

NK 14/16 14 22 16 11.40 11.50 24600 0.021

NK 14/20 14 22 20 14.50 15.60 24600 0.026

NK 15/16 15 23 16 12.10 12.70 23900 0.022






Bearing

Designation



NK 25/16 25 33 16 16.80 22.40 17800 0.033

NK 25/20 25 33 20 21.30 30.50 17800 0.042

NK 26/16 26 34 16 17.30 23.60 17200 0.034

NK 26/20 26 34 20 22.00 32.00 17200 0.042

NK 28/20 28 37 20 24.80 34.00 15800 0.052

NK 28/30 28 37 30 37.00 57.00 15800 0.082

NK 29/20 29 38 20 27.50 39.00 15300 0.050

NK 29/30 29 38 30 37.00 57.00 15300 0.084

NK 30/20 30 40 20 28.00 41.00 14800 0.061

NK 30/30 30 40 30 42.00 69.00 14800 0.092

NK 32/20 32 42 20 29.50 44.50 14000 0.064

NK 32/30 32 42 30 39.00 63.00 14000 0.102

NK 35/20 35 45 20 31.00 48.50 12900 0.069

NK 35/30 35 45 30 46.00 81.00 12300 0.106

NK 37/20 37 47 20 28.00 43.50 12300 0.077

NK 37/30 37 47 30 42.00 73.00 12300 0.113

NK 38/20 38 48 20 29.00 45.00 12000 0.079

Bearing

Designation



NK 38/30 38 48 30 43.00 76.00 12000 0.116

NK 40/20 40 50 20 33.50 56.00 11400 0.078

NK 40/30 40 50 30 44.00 79.00 11400 0.125

NK 42/20 42 52 20 30.00 49.00 10900 0.086

NK 42/30 42 52 30 44.50 82.00 10900 0.130

NK 43/20 43 53 20 30.50 51.00 10700 0.086

NK 43/30 43 53 30 45.50 85.00 10700 0.133

NK 45/20 45 55 20 35.00 62.00 10200 0.085

NK 45/30 45 55 30 52.00 103.0 9800 0.132

NK 47/20 47 57 20 32.50 56.00 9800 0.095

NK 47/30 47 57 30 48.50 94.00 9800 0.142

NK 50/25 50 62 25 48.50 87.00 9200 0.146

NK 50/35 50 62 35 67.00 132.0 8800 0.207

NK 55/25 55 68 25 45.50 82.00 8400 0.180

NK 55/35 55 68 35 60.00 118.0 8400 0.250

NK 60/25 60 72 25 53.00 103.0 7400 0.170

NK 60/35 60 72 35 63.00 130.0 7700 0.258






Bearing

Designation



NK 65/25 65 78 25 50.00 98.00 7200 0.221

NK 65/35 65 78 35 66.00 142.0 7200 0.310

NK 68/25 68 82 25 49.50 89.00 6800 0.241

NK 68/35 68 82 35 70.00 139.0 6800 0.338

NK 70/25 70 85 25 50.00 92.00 6600 0.260

NK 70/35 70 85 35 71.00 144.0 6600 0.370

NK 73/25 73 90 25 60.00 100.0 6300 0.302

NK 73/35 73 90 35 85.00 156.0 6300 0.428

NK 75/25 75 92 25 61.00 104.0 6100 0.315

NK 75/35 75 92 35 87.00 162.0 6100 0.445

NK 80/25 80 95 25 63.00 119.0 5800 0.301

NK 80/35 80 95 35 89.00 184.0 5800 0.425

Bearing

Designation



NK 85/25 85 105 25 78.00 123.0 5400 0.425

NK 85/35 85 105 35 111.0 193.0 5400 0.600

NK 90/25 90 110 25 81.00 132.0 5100 0.450

NK 90/35 90 110 35 116.0 208.0 5100 0.630

NK 95/26 95 115 25 83.00 137.0 4850 0.490

NK 95/36 95 115 36 121.0 223.0 4850 0.680

NK 100/26 100 120 26 86.00 146.0 4600 0.515

NK 100/36 100 120 36 125.0 237.0 4600 0.715

NK 105/26 105 125 26 89.00 155.0 4400 0.540

NK 105/36 105 125 36 129.0 250.0 4400 0.713

NK 110/30 110 130 30 111.0 210.0 4200 0.650

NK 110/408 110 130 40 143.0 290.0 4200 0.830






Bearing

Designation



RNA 4822 120 140 30 106.0 216.0 3750 0.670

RNA 4824 130 150 30 112.0 239.0 3500 0.730

RNA 4826 145 165 35 134.0 310.0 3150 0.990

RNA 4828 155 175 35 136.0 325.0 2950 1.050

RNA 4830 165 190 40 172.0 400.0 2750 1.600

RNA 4832 175 200 40 181.0 435.0 2600 1.700

RNA 4834 185 215 45 209.0 510.0 2450 2.540

RNA 4836 195 225 45 219.0 550.0 2330 2.680

RNA 4838 210 240 50 255.0 690.0 2180 3.210

RNA 4840 220 250 50 260.0 720.0 2090 3.350

Bearing

Designation



RNA 4844 240 270 50 275.0 790.0 1920 3.620

RNA 4848 265 300 60 400.0 1080 1730 5.400

RNA 4852 285 320 60 415.0 1160 1620 5.800

RNA 4856 305 350 69 510.0 1300 1500 9.300

RNA 4860 330 380 80 700.0 1770 1380 12.70

RNA 4864 350 400 80 710.0 1850 1310 13.40

RNA 4868 370 420 80 730.0 1940 1240 14.00

RNA 4872 390 440 80 740.0 2020 1180 14.80

RNA 4876 415 480 100 1130 2900 1090 26.00






Bearing

Designation



RNA 4911 63 80 25 65.00 100.0 6900 0.255

RNA 4912 68 85 25 68.00 108.0 6400 0.275

RNA 4913 72 90 25 69.00 112.0 6000 0.312

RNA 4914 80 100 30 95.00 156.0 5400 0.460

RNA 4915 85 105 30 97.00 162.0 5200 0.489

RNA 4916 90 110 30 101.0 174.0 4900 0.516

RNA 4917 100 120 35 12.50 23.70 4450 0.657

RNA 4918 105 125 35 129.0 250.0 4250 0.745

RNA 4919 110 130 35 116.0 260.0 4100 0.719

RNA 4920 115 140 40 144.0 270.0 4000 1.150

RNA 4922 125 150 40 149.0 290.0 3700 1.240

RNA 4924 135 165 45 205.0 390.0 3400 1.860

RNA 4926 150 180 50 229.0 470.0 3100 2.210

RNA 4928 160 190 50 237.0 500.0 2900 2.350

Bearing

Designation



RNA 4900 14 22 13 9.60 9.20 23600 0.017

RNA 4901 16 24 13 10.60 10.90 23200 0.018

RNA 4902 20 28 13 12.00 13.60 20400 0.022

RNA 4903 22 30 13 12.40 14.60 18800 0.025

RNA 4904 25 37 17 23.70 25.50 15800 0.052

RNA 49/22 28 39 17 26.00 29.50 14600 0.050

RNA 4905 30 42 17 26.50 31.50 13600 0.061

RNA 49/28 32 45 17 27.50 33.50 12700 0.073

RNA 4906 35 47 17 28.50 35.50 12000 0.069

RNA 49/32 40 52 20 34.50 47.50 10700 0.089

RNA 4907 42 55 22 35.50 50.00 10100 0.107

RNA 4908 48 62 22 48.50 67.00 8900 0.140

RNA 4909 52 68 22 51.00 73.00 8200 0.182

RNA 4910 58 72 22 53.00 80.00 7500 0.163






Bearing

Designation



RNA 6908 48 62 40 74.00 116.0 8900 0.256

RNA 6909 52 68 40 79.00 127.0 8200 0.338

RNA 6910 58 72 40 82.00 139.0 7500 0.310

RNA 6911 63 80 45 102.0 176.0 6900 0.470

RNA 6912 68 85 45 106.0 191.0 6400 0.488

RNA 6913 72 90 45 108.0 198.0 6000 0.580

RNA 6914 80 100 54 145.0 265.0 5400 0.857

RNA 6915 85 105 54 147.0 275.0 5200 0.935

RNA 6916 90 115 54 153.0 300.0 4900 0.987

RNA 6917 110 120 63 188.0 400.0 4450 1.200

RNA 6918 105 125 63 195.0 425.0 4250 1.330

RNA 6919 110 130 63 197.0 440.0 4100 1.460

Bearing

Designation



Single Row

RNA 6901 16 24 22 18.10 21.60 23200 0.031

RNA 6902 20 28 23 19.50 25.50 20400 0.040

RNA 6903 22 30 23 21.10 29.00 18800 0.042

RNA 6904 25 37 30 40.50 51.00 15800 0.100

RNA 69/22 28 39 30 42.00 55.00 14600 0.098

RNA 6905 30 42 30 44.00 59.00 13600 0.112

RNA 69/28 32 45 30 45.50 63.00 12700 0.135

RNA 6906 35 47 30 49.00 71.00 12000 0.126

Double Row

RNA 69/32 40 52 36 53.00 82.00 10700 0.162

RNA 6907 42 55 36 54.00 86.00 10100 0.193






Bearing

Designation



NKS 20 20 32 20 26.00 25.00 18800 0.049

NKS 22 22 .35 20 27.50 28.00 17200 0.062

NKS 24 24 37 20 29.50 31.00 16100 0.066

NKS 25 25 38 20 31.00 33.50 15600 0.068

NKS 28 28 42 20 32.50 36.50 14000 0.084

NKS 30 30 45 22 36.50 40.00 13100 0.104

NKS 32 32 47 22 38.00 43.50 12400 0.110

NKS 35 35 50 22 39.50 47.00 11500 0.118

NKS 37 37 52 22 41.50 50.00 11000 0.123

Bearing

Designation



NKS 40 40 55 22 42.50 54.00 10300 0.129

NKS 43 43 58 22 44.00 57.00 9700 0.139

NKS 45 45 60 22 45.50 60.00 9300 0.145

NKS 50 50 65 22 48.00 67.00 8500 0.157

NKS 55 55 72 22 51.00 74.00 7700 0.221

NKS 60 60 80 28 71.00 98.00 7000 0.335

NKS 65 65 85 28 75.00 108.0 6500 0.356

NKS 70 70 90 28 77.00 113.0 6100 0.380

NKS 75 75 95 28 81.00 123.0 5800 0.402



Without Flanges With Inner Ring (NAO) Without Inner Ring (RNAO)

Suffix: ZW — Double Row TN — Plastic Cage


Bearing

Designation



NAO 25X42X32‐ZW 25 42 32 45.00 67.00 14600 0.190

NAO 30X45X17 30 45 17 23.50 38.50 13100 0.102

NAO 30X45X26‐ZW 30 45 26 31.50 56.00 13100 0.157

NAO 30X47X16 30 47 16 27.50 37.50 12700 0.109

NAO 30X47X18 30 47 18 31.00 43.00 12700 0.119

NAO 35X50X17 35 50 17 24.20 41.50 11500 0.113

NAO 35X55X20 35 50 20 37.00 57.00 11300 0.190

NAO 40X55X17 40 55 17 25.50 46.00 10300 0.127

NAO 50X68X20 50 68 20 32.00 66.00 8500 0.230

NAO 70X100X30 70 100 30 80.00 176.0 5800 0.850

NAO 80X110X30 80 110 30 76.00 172.0 5200 0.920

NAO 90X120X30 90 120 30 80.00 180.0 4700 1.044

Bearing

Designation



NAO 6X17X10 6 17 10 5.30 5.50 29500 0.014

NAO 9X22X12 9 22 12 11.30 9.90 26000 0.024

NAO 12X24X13 12 24 13 10.10 11.80 23600 0.030

NAO 12X28X12 12 28 12 13.00 12.50 22900 0.040

NAO 15X28X13 15 28 13 11.10 14.30 21300 0.029

NAO 15X32X12 15 32 12 15.10 16.20 20900 0.050

NAO 17X30X13 17 30 13 11.80 15.90 20400 0.042

NAO 17X35X16 17 35 16 22.60 25.50 19200 0.078

NAO 20X35X17 20 35 17 16.80 26.00 18100 0.076

NAO 20X37X16 20 37 16 23.80 28.00 17200 0.082

NAO 25X40X17 25 40 17 22.10 34.00 15100 0.088

NAO 25X42X16 25 42 16 26.00 33.50 14600 0.086






Bearing

Designation



RNAO 30X42X16 30 42 16 26.00 33.50 14600 0.059

RNAO 35X45X13 35 45 13 18.30 28.00 13100 0.053

RNAO 35X45X17 35 45 17 23.50 38.50 13100 0.069

RNAO 35X47X16 35 47 16 27.50 37.50 12700 0.078

RNAO 35X47X18 35 47 18 31.00 43.00 12700 0.089

RNAO 40X50X17 40 50 17 24.20 41.50 11500 0.074

RNAO 40X55X20 40 55 20 37.00 57.00 11300 0.145

RNAO 45X55X17 45 55 17 25.50 46.00 10300 0.083

RNAO 50X65X20 50 65 20 44.50 62.00 9100 0.168

RNAO 55X68X20 50 68 20 32.00 66.00 8500 0.166

RNAO 60X78X20 60 78 20 49.50 85.00 7700 0.255

RNAO 65X85X30 65 85 30 64.00 123.0 7100 0.464

RNAO 70X90X30 70 90 30 68.00 135.0 6600 0.499

RNAO 80X100X30 80 100 30 80.00 176.0 5800 0.580

RNAO 90X105X26 90 105 26 69.00 150.0 5200 0.373

RNAO 90X110X30 90 110 30 76.00 172.0 5200 0.610

RNAO 100X120X30 100 120 30 80.0 188.0 4700 0.694

Bearing

Designation



RNAO 5X10X8 5 10 8 2.65 1.92 39000 0.003

RNAO 6X13X8 6 13 8 2.95 2.28 36500 0.006

RNAO 7X14X8 7 14 8 3.25 2.65 34500 0.006

RNAO 8X15X10 8 15 10 4.45 4.10 32500 0.008

RNAO 10X17X10 10 17 10 5.30 5.50 29500 0.010

RNAO 12X22X12 12 22 12 11.30 9.90 26000 0.019

RNAO 15X23X13 15 23 13 9.70 109.0 22900 0.020

RNAO 16X24X13 16 24 13 10.10 11.80 23600 0.021

RNAO 16X28X12 16 28 12 13.00 12.50 22900 0.032

RNAO 17X25X13 17 25 13 11.70 14.60 22900 0.022

RNAO 20X28X13 20 28 13 11.10 14.30 21300 0.025

RNAO 20X32X12 20 32 12 15.10 16.20 20900 0.038

RNAO 22X30X13 22 30 13 11.80 15.90 20400 0.027

RNAO22X35X16 22 35 16 22.60 25.50 19200 0.059

RNAO 25X35X17 25 35 17 16.80 26.00 18100 0.053

RNAO 25X37X16 25 37 16 23.80 28.00 17200 0.060

RNAO 30X40X17 30 40 17 22.10 34.00 15100 0.060






Bearing

Designation



RNAO 18X30X24‐ZW 18 30 24 24.80 30.00 21800 0.069

RNAO 20X28X26‐ZW 20 28 26 19.00 28.80 21300 0.050

RNAO 25X35X26‐ZW 25 35 26 21.90 37.00 18100 0.076

RNAO 30X42X32‐ZW 30 42 32 45.00 67.00 14600 0.137

RNAO 35X45X26‐ZW 35 45 26 31.50 56.00 13100 0.091

RNAO 35X47X32‐ZW 35 47 32 47.50 75.00 12700 0.156

Bearing

Designation



RNAO 40X50X34‐ZW 40 50 34 41.50 83.00 11500 0.152

RNAO 40X55X40‐ZW 40 55 40 70.00 118.00 11100 0.275

RNAO 45X62X40‐ZW 45 62 40 76.00 135.00 10000 0.377

RNAO 50X65X40‐ZW 50 65 40 69.00 124.00 9100 0.355

RNAO 60X78X40‐ZW 60 78 40 85.00 171.00 7700 0.435

changzhou zhihua bearings co., ltd.czzhihua.com/templates/zhihuazhoucheng/pdf/heavy-duty needle...

Documents