Thin Section Four Point Contact Ball Bearings – High Precision, Lightweight Bearings for Aerospace, Robotics, and More

  • Thin Section Four Point Contact Ball Bearings – High Precision, Lightweight Bearings for Aerospace, Robotics, and More
  • Thin Section Four Point Contact Ball Bearings – High Precision, Lightweight Bearings for Aerospace, Robotics, and More
  • Thin Section Four Point Contact Ball Bearings – High Precision, Lightweight Bearings for Aerospace, Robotics, and More

Thin Section Four Point Contact Ball Bearings – High Precision, Lightweight Bearings for Aerospace, Robotics, and More

Inner diameter(Inch series): 3/4 to 40 in                   Cross sections: 3/16 × 3/16 in to 1 × 1 in

ID diameter(Metric series): 20 ≤ d ≤ 360 mm           Cross sections: 8 × 8 to 20 × 20 mm

Material: bearing rings and rolling elements steel GCr15 or stainless steel 9Cr18

Precision levels: P0, P6, P5 and P4

Delivery time: 3-10 days(except customized)

Low friction, High stiffness, High running accuracy

The Type-X 4-point contact thin section bearings are ideal for moment loading. This design is excellent for moment loading and reversing axial loading. The Type-X thin section bearings can be used for other light loading conditions,  but they are not an ideal solution for radial loads or combined radial and thrust loads.

Thin section bearings are designed to save weight, use less space, reduce friction, increase design flexibility and provide high running accuracy. Thin bearings are available in both Inch and Metric series.

For Bearings price, customize, or other request, please contact us



thin section bearing

What is Thin Section Four Point Contact Ball Bearing?

Thin section four-point contact ball bearings are designed to handle radial loads, but when the bearing's radial clearance is increased, they also offer angular contact bearing performance, allowing them to withstand combined radial and axial loads. These bearings are capable of handling pure axial loads when thrust bearings are not suitable, especially at high speeds. Compared to other bearings of the same size, they have a lower coefficient of friction and a higher speed limit. However, they are not suitable for heavy loads or applications where high impact resistance is required.


Types of Thin Section Four Point Contact Ball Bearings

  • Thin Section Angular Contact Ball Bearing

  • Thin Section Radial Contact Ball Bearing

  • Thin Section Four-Point Contact Ball Bearing


Key Features of Thin Section Four Point Contact Ball Bearings

  • Lightweight Design: Thin section bearings are engineered to reduce weight, space, and friction, making them ideal for compact machinery designs.

  • High Speed: These bearings offer low friction and high-speed capability, making them ideal for high-speed applications.

  • High Running Accuracy: Designed for precision, thin section bearings maintain high accuracy in various demanding applications.

  • Customization: LTZC bearings can be customized to meet specific needs, including materials, internal clearances, and lubricants, among other performance requirements.


Applications of Thin Section Four Point Contact Ball Bearings

Thin section four-point contact ball bearings are widely used in industries that require high precision and efficiency, such as:

  • Aerospace: Aircraft components, navigation systems, and satellite machinery.

  • Medical Systems: Medical imaging devices, robotic surgery tools, and diagnostic equipment.

  • Robotics: Robot joints, precision machinery, and actuators.

  • Astronomy Instrumentation: Telescope mounts, observatory equipment, and other precision instruments.

  • Machine Tools: CNC machines, grinders, and other high-precision manufacturing tools.


Technical Specifications

  • Diameter Range: 0.5mm to 50.8mm

  • Accuracy Levels: Po, P6, P5, P4

  • Implementation Standards:

    • Universal Bearing: GB/T307

    • Slewing Bearing: JB/2300

    • Ship Industry: CB/T3669

    • Machinery Industry: JB/T10471

    • Wind Turbine Bearing: B/T10705

  • Quality Certification: ISO9001 since 2003


Related Products

  • Thin Section Radial Contact Bearings

  • Thin Section Angular Contact Bearings

  • Cross Roller Bearings

  • Thin Section Rotary Table Bearings


Supplier of Thin Section Four Point Contact Ball Bearings

LTZC specializes in the design, production, and sale of high-performance thin section ball bearings. We offer a wide range of customization options and provide tailored solutions to meet the specific needs of various industries. If you are looking for a reliable supplier of thin section four-point contact ball bearings, please contact us for the latest quotations.


                                                                          KAA series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KAA010X11.3751.1421.2361290670325016500.012
25.434.9252931.4
 KAA015X1.51.8751.6421.7361780800445020500.018
38.147.62541.744.1
                                                                            KA series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KA020X22.52.8162.31416501420760035100.048
50.863.555.558.8
 KA025X2.532.6862.8146901600929040500.059
63.576.268.271.5
 KA030X33.53.1863.314440018201098044900.068
76.288.980.984.2
 KA035X3.543.6863.814507020001267049300.082
88.9101.693.696.9
 KA040X44.54.1864.314573021301431053800.09
101.6114.3106.3109.6
 KA042X4.254.754.4364.564609022201516056000.095
107.95120.65112.7115.9
 KA045X4.554.6864.814640023101600058200.1
114.3127119122.3
 KA047X4.755.254.9365.064676024001685060000.104
120.65133.35125.4128.6
 KA050X55.55.1865.314707024901769062200.109
127139.7131.7135
 KA055X5.565.6865.814778026201938065800.118
127139.7131.7135
 KA060X66.56.1866.314845028002107069800.13
152.4165.1157.1160.4
 KA065X6.576.6866.814911029302276073300.14
165.1177.8169.8173.1
 KA070X77.57.1867.314978030702445076900.15
177.8190.5182.5185.8
 KA075X7.587.6867.8141045032002614080500.16
190.5203.2195.2198.5
 KA080X88.58.1868.3141111033302783084000.172
203.2215.9207.9211.2
 KA090X99.59.1869.3141249036003120090700.2
228.6241.3233.3236.6
 KA100X1010.510.18610.3141382038703458096900.227
254266.7258.7262
 KA110X1111.511.18611.31415160413037960103100.236
279.4292.1284.1287.4
 KA120X1212.512.18612.31416540436041340108900.254
304.8317.5309.5312.8
                                                                             KB series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KB020X22.6252.2312.393413020001040050200.073
50.866.67556.760.8
 KB025X2.53.1252.7312.893507023101262057300.091
63.579.37569.473.5
 KB030X33.6253.2313.393596025801489064000.109
76.292.07582.186.2
 KB035X3.54.1253.7313.893685028001716070700.125
88.9104.77594.898.9
 KB040X44.6254.4324.393778030701943076500.14
101.6117.475107.5111.6
 KB042X4.24.8754.4814.643813031602031079100.147
107.95123.825113.8117.9
 KB045X4.55.1254.7314.893867032902169082200.16
114.3130.175120.2124.3
 KB047X4.755.3754.9815.143902033802258084500.163
120.65136.525126.6130.6
 KB050X55.6255.2315.393956035102391088000.172
127142.875132.9137
 KB055X5.56.1255.7315.8931049037302618093400.186
139.7155.575145.6149.7
 KB060X66.6256.2316.3931138039602845098700.205
152.4168.275158.3162.4
 KB065X6.57.1256.7316.89312270413030720104000.216
165.1180.975171175.1
 KB070X77.6257.2317.39313200436032980108900.232
177.8193.675183.7187.8
 KB075X7.58.1257.7317.89314090453035200113800.25
190.5206.375196.4200.5
 KB080X88.6258.2318.39314980467037470118700.262
203.2219.075209.1213.2
 KB090X99.6259.2319.39316800511042000128000.3
228.6244.475234.5238.6
 KB100X1010.62510.23110.39318620547046500136900.331
254269.875259.9264
 KB110X1111.62511.23111.39320400582051030145800.36
279.4295.275285.3289.4
 KB120X1212.62512.23112.39322230618055560154200.39
304.8320.675310.7314.8
 KB140X1414.62514.23114.39325830680064590170700.476
355.6371.475361.5365.6
 KB160X1616.62516.23116.39329430742073610186300.544
406.4422.275412.3416.4
 KB180X1818.62518.23118.39333070805082630200900.612
457.2473.075463.1467.2
 KB200X2020.62520.23120.39336670862091660215600.68
508523.875513.9518
                                                                             KC series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KC040X44.754.4324.393934039102338098200.204
101.6120.65107.5111.6
 KC042X4.254.4814.6439870409024710101800.213
107.95127113.8117.9
 KC045X4.55.254.7314.89310400422026050105800.225
114.3133.35120.2124.3
 KC047X4.755.54.9815.14310940436027380109400.235
120.65139.7126.6130.6
 KC050X55.755.2315.39311510449028720112900.263
127146.05132.9137
 KC055X5.56.255.7315.89312580480031380119600.268
139.7158.75145.6149.7
 KC060X66.756.2316.39313650507034050126200.295
152.4171.45158.3162.4
 KC065X6.57.256.7316.89314710533036760132900.312
165.1184.15171175.1
 KC070X77.757.2317.39315780556039430139100.34
177.8196.85183.7187.8
 KC075X7.58.257.7317.89316850582042090145400.36
190.5209.55196.4200.5
 KC080X88.758.2318.39317910605044760151600.387
203.2222.25209.1213.2
 KC090X99.759.2319.39320050653050100163100.45
228.6247.65234.5238.6
 KC100X1010.7510.23110.39322180698055430174700.481
254273.05259.9264
 KC110X1111.7511.23111.39324310742060810185800.526
279.4298.45285.3289.4
 KC120X1212.7512.23112.39326450787066140196500.567
304.8323.85310.7314.8
 KC140X1414.7514.23114.39330720867076810217400.689
355.6374.65361.5365.6
 KC160X1616.7516.23116.39335030947087520236900.785
406.4425.45412.3416.4
 KC180X1818.7518.23118.393392901022098190256000.88
457.2476.25463.1467.2
 KC200X2020.7520.23120.3934356010980108900274300.98
508527.05515520
                                                                             KD series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KD040X454.374.6313690627034230156500.366
101.6127111117.6
 KD042X4.255.254.624.8814180640035470160000.386
107.95133.35117.3124
 KD045X4.55.54.875.1315200671038010167600.405
114.3139.7123.7130.3
 KD047X4.755.755.125.3815690685039290171600.426
120.65146.05130136.7
 KD050X565.375.6316710716041830178700.454
127152.4136.4143
 KD055X5.56.55.876.1318230756045610189400.485
139.7165.1149.1155.7
 KD060X676.376.6319780800049430199600.526
152.4177.8161.8168.4
 KD065X6.57.56.877.1321290840053210209800.566
165.1190.5174.5181.1
 KD070X787.377.6322800880057020219600.606
177.8203.2187.2193.8
 KD075X7.58.57.878.1324310916060810229400.65
190.5215.9199.9206.5
 KD080X898.378.6325830956064630238700.694
203.2228.6212.6219.2
 KD090X9109.379.63288901031072230257400.78
228.6254238244.6
 KD100X101110.3710.63319201098079830275200.853
254279.4263.4270
 KD110X111211.3711.63349801169087430292000.934
279.4304.8288.8295.4
 KD120X121312.3712.63380101236095030308901.02
304.8330.2314.2320.8
 KD140X141514.3714.634409013650110240340901.24
355.6381365371.6
 KD160X161716.3716.635018014890125440371601.41
457.2482.6466.6473.2
 KD180X181918.3718.635623016050140640401401.58
457.2482.6466.6473.2
 KD200X202120.3720.636232017200155840429801.75
508533.4517.4524
                                                                             KG series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KF040X45.54.5554.945238301214059560303600.875
101.6139.7115.7125.6
 KF042X4.255.754.8055.195250701258062720314300.93
107.95146.05122132
 KF045X4.565.0555.445263601298065830324500.975
114.3152.4128.4138.3
 KF047X4.756.255.3055.695276001338068990334701.04
120.65158.75134.7144.7
 KF050X56.55.5555.945288501378072100344901.09
127165.1141.1151
 KF055X5.576.0556.445313401458078370364501.18
139.7177.8153.8163.7
 KF060X67.56.5556.945338701534084680383601.24
152.4190.5166.5176.4
 KF065X6.587.0557.4453636016090909050402301.35
165.1203.2179.2189.1
 KF070X78.57.5557.945388901685097210420501.45
177.8215.9191.9201.8
 KF075X7.598.0558.4454138017560103480438701.56
190.5228.6204.6214.5
 KF080X89.58.5558.94543920182301097504560101.66
203.2241.3217.3227.2
 KF090X910.59.5559.9454890019600122280490301.81
228.6366.7242.7252.6
 KF100X1011.510.55510.9455392020940134820523202.02
254292.1268.1278
 KF110X1112.511.55511.9455894022230147350555202.18
279.4317.5293.5303.4
 KF120X1213.512.55512.9456496023470159890586302.38
304.8342.9318.9328.8
 KF140X1415.514.55514.9457401025830185000645902.72
355.6393.7369.7379.6
 KF160X1617.516.55516.9458401028140210070703203.22
406.4444.5420.5430.4
 KF180X1819.518.55518.9459406030320235140758303.58
457.2495.3471.3481.2
 KF200X2021.520.55520.94510410032450260260811204.04
508546.1522.1532
                                                                             KG series
TypeDimensionBasic Load Ratings(N)Weight
(inc /mm)RadialThrust
dDL1L2CorCrCoaCaKg
 KG040X464.7425.2583649020000091210500501.65
101.6152.4120.4133.6
 KG042X4.256.254.9925.508364902000091210500501.75
107.95158.75126.8139.9
 KG045X4.56.55.2425.758389402089097300522301.81
114.3165.1133.1146.3
 KG047X4.756.755.4926.0084134021740103390543601.91
120.65171.45139.5152.6
 KG050X575.7426.2584378022580109440565002.02
127177.8145.8159
 KG055X5.57.56.2426.7584623023430115530585902.17
139.7190.5158.5171.7
 KG060X686.7427.2585107025030127710626302.31
152.4203.2171.2184.4
 KG065X6.58.57.2427.7585352025830133800645902.47
165.1215.9183.9197.1
 KG070X797.7428.2585836027380145930684502.67
177.8228.6196.6209.8
 KG075X7.59.58.2428.7586081028140152020703202.83
190.5241.3209.3222.5
 KG080X8108.7429.2586565029600164200740103
230.2254222235.2
 KG090X9119.74210.2587299031780182420794303.3
228.6254222235.2
 KG100X101210.74211.2588023033870200650846303.65
254304.8272.8286
 KG110X111311.74212.2588757035870218920897003.96
279.4330.2298.2311.4
 KG120X121412.74213.2589486037830237140945904.32
304.8355.6323.6336.8
 KG140X141614.74215.258109440416102736301040604.96
355.6406.4374.4387.6
 KG160X161816.74217.258124060452503101301131305.65
406.4457.2425.2438.4
 KG180X182018.74219.258138640487203466201218406.28
457.2508476489.2
 KG200X202220.74221.258153220521003830701302407.53
508558.8526.8540

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