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Four-point contact ball bearings
Four-point contact ball bearings Four-point contact ball bearings Four-point contact ball bearings Four-point contact ball bearings Four-point contact ball bearings

Four-point contact ball bearings

Four-point contact ball bearings are lightweight precision bearings. They utilize a single row of steel balls with four-point contact in the raceway, enabling them to simultaneously withstand axial loads, radial loads, and overturning moments. Their thin-section structure and high-precision design ensure high load capacity while effectively reducing weight and installation space.

ItemsSpecifications
Inner Diameter (Inch Series)3/4 inch - 40 inches
Cross Sections (Inch Series)3/16 × 3/16 inch - 1 × 1 inch
Inner Diameter (Metric Series)20 mm ≤ d ≤ 360 mm (d represents inner diameter)
Cross Sections (Metric Series)8 × 8 mm - 20 × 20 mm
MaterialBearing rings and rolling elements: GCr15 steel or 9Cr18 stainless steel
Precision LevelsP0, P6, P5, P4
Delivery Time3 - 10 days (except customized products)
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Brochure

Four-Point Contact Ball Bearing

Four-point contact ball bearings

Four-point contact ball bearings features

Lightweight Structure: Thin-section design reduces overall weight and saves installation space.

High Load-bearing Capacity: Withstands complex loads and is suitable for complex working conditions.

High Precision and Stability: Low friction, smooth operation, and low noise, making it suitable for high-speed or precision applications.

Flexible Application: Suitable for equipment requiring lightweight, compactness, and durability,such as small robotic arms, medical devices.

See the LTZC production site

Four-point contact ball bearings advantages

1. Compact Structure and Flexible Installation

The single-row ball design makes the bearing lightweight, compact, and easy to install. LTZC uses a standard mounting hole distribution and can customize flange structures, gear types, and sealing methods according to customer needs, designing unique bearing solutions.

2. High Rotational Accuracy and Smooth Operation

Through LTZC's precision bearing machining technology (including CNC gear grinding, CNC hardening, and integral raceway machining), the four-point contact ball bearing achieves small clearance and good rotational rigidity, maintaining stable operating accuracy even under medium- and high-speed rotation conditions.Get LTZC technical support

3. LTZC's High-Standard Heat Treatment and Material Guarantee Lifespan

LTZC uses high-grade bearing steels such as 42CrMo/50Mn and employs integral hardening + multi-point temperature-controlled induction hardening technology to ensure uniform raceway hardness and high wear resistance. This gives the four-point contact ball slewing bearing a long lifespan and high reliability.

4. Customizable Gear Structure

LTZC's gear machining capabilities cover modules from 4 to 30, ensuring gear surface hardness and transmission accuracy, making it particularly suitable for engineering machinery, vehicles, and lifting equipment. Get a quote for LTZC bearings

5. Fully Sealed Design for Harsh Conditions

LTZC uses double-lip rubber seals or metal labyrinth seals to enhance dust, mud, and sea fog resistance, and offers pressurized lubrication and high-temperature grease options, adapting to extreme environments. view LTZC seal ring

6. Superior Balance of Cost and Performance

Compared to crossed roller bearings, four-point contact ball bearings are less expensive and easier to maintain, yet still meet most load and accuracy requirements, making them the most economical and stable choice for medium-sized equipment.View LTZC quality and certifications

Four-point contact ball bearings applications

Robotics、Medical equipment、Aerospace、Automation equipment、Lightweight rotary devices

8mm Series - Four Point Contact Ball Bearing

Bearing Model Inner Dia d (mm) Outer Dia D (mm) Width B (mm) Dynamic Radial (N) Dynamic Thrust (N) Dynamic Moment (N·m) Static Radial (N) Static Thrust (N) Static Moment (N·m) Weight (kg)
K02508XP0 25 41 8 3246 4599 40 3275 7433 49 0.06
K05008XP0 50 66 8 4511 6531 98 5443 13621 158 0.08
K06008XP0 60 76 8 4962 7306 127 6433 16093 219 0.09
K07008XP0 70 86 8 5384 8032 158 7424 18574 290 0.1
K08008XP0 80 96 8 5796 8728 191 8424 21045 370 0.11
K09008XP0 90 106 8 6188 9405 228 9405 23526 461 0.13
K10008XP0 100 116 8 6570 10052 266 10395 25997 562 0.14
K11008XP0 110 126 8 6933 10689 307 11395 28469 672 0.15
K12008XP0 120 136 8 7286 11297 350 12376 30950 792 0.16
K13008XP0 130 146 8 7630 11886 395 13366 33431 923 0.18
K14008XP0 140 156 8 7963 12464 442 14367 35902 1063 0.19
K15008XP0 150 166 8 8296 13033 492 15347 38383 1213 0.2
K16008XP0 160 176 8 8610 13592 543 16338 40855 1373 0.2
K17008XP0 170 186 8 8924 14131 596 17328 43326 1543 0.2
K18008XP0 180 196 8 9228 14661 651 18319 45807 1722 0.21
K19008XP0 190 206 8 9444 15063 701 19064 47660 1888 0.21
K20008XP0 200 216 8 9728 15573 759 20055 50141 2086 0.22
K02513XP0 25 51 13 6757 8522 96 6825 12680 96 0.096
K05013XP0 50 76 13 8924 12023 211 9012 22192 280 0.2
K06013XP0 60 86 13 9944 14082 272 10778 26939 393 0.23
K07013XP0 70 96 13 10532 15171 328 12043 30106 500 0.26
K08013XP0 80 106 13 11111 16210 388 13317 33274 619 0.28
K09013XP0 90 116 13 12003 17730 464 15210 38030 784 0.31
K10013XP0 100 126 13 12543 18691 532 16485 41198 931 0.34
K11013XP0 110 136 13 13376 20104 617 18387 45954 1131 0.37
K12013XP0 120 146 13 13876 21025 693 19672 49131 1307 0.4
K13013XP0 130 156 13 14377 21918 771 20918 52299 1496 0.43
K14013XP0 140 166 13 15141 23222 869 22820 57045 1746 0.46
K15013XP0 150 176 13 15612 24075 954 24085 60223 1963 0.48
K16013XP0 160 186 13 16073 24919 1043 25360 63390 2193 0.51
K17013XP0 170 196 13 16779 26145 1152 27262 68146 2494 0.54
K18013XP0 180 206 13 17220 26949 1247 28528 71314 2753 0.57
K19013XP0 190 216 13 17652 27743 1344 29793 74482 3024 0.6
K20013XP0 200 226 13 18319 28910 1464 31695 79238 3375 0.63
K25013XP0 250 276 13 20780 33372 2050 39305 98253 5168 0.77
K30013XP0 300 326 13 22820 37206 2680 46278 115679 7242 0.91
K32013XP0 320 346 13 23722 38893 2963 49445 123613 8232 0.97
K34013XP0 340 366 13 24595 40531 3257 52613 131527 9286 1.02
K36013XP0 360 386 13 25438 42149 3560 55780 139451 10403 1.08


Why choose LTZC bearings？

A Trusted Brand

With over 20 years of experience in bearing R&D, our global service network covers countries such as India and Russia, ensuring fast and efficient technical support for all bearing issues and ensuring the smooth operation of your equipment.

High-Quality Bearings

Advanced CNC production equipment and manufacturing processes guarantee bearing precision and durability. LTZC bearings also carry third-party testing reports to ensure they meet international standards.


Product Range

LTZC products include slewing bearings, slewing drives, precision thin-wall bearings, and custom bearings. They are widely used in cranes, heavy machinery, and port machinery, maintaining stable performance under harsh operating conditions.

Custom Bearings

Our experienced technical team provides customized bearing solutions for complex applications. Services include load analysis and bearing selection, service life calculations, 3D design, and engineering drawings.


LTZC slewing bearing manufacturer

LTZC Bearings is a trusted bearing manufacturer specializing in slewing bearings, slewing drives, and precision bearings. With advanced CNC machining equipment, comprehensive heat treatment, and strict quality control, our products meet international standards and are ISO certified.

We export high-quality industrial bearings to Germany, India, Russia, and Canada, earning over 10,000 satisfied customer feedbacks. With strong OEM and ODM capabilities, LTZC provides fast delivery and custom bearing solutions for heavy machinery, construction, and automation industries.

View Manufacturing Capabilities

Technology support

Pre-sales service

After-sales service

Installation & maintenance

Selection guide

Customized bearing solutions

Customized bearing solutions

LTZC is a professional slewing bearing manufacturer，providing a full range of custom bearing services, including slewing rings, non-standard bearings, large bearings, thin-section bearings, crossed roller bearings, and four-point contact ball bearings. Whether the requirements are special sizes, materials, or complex operating conditions, we can provide customers with the optimal solution through professional R&D and precision manufacturing.

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Feel free to get a quote on the latest price of slewing bearings for any largeapplications, please include your application, needs, requirements and otherdetails.