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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 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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Four-Point Contact Ball Bearing

Four-point contact ball bearings

Four-point contact ball bearings features

Lightweight Structure: Thin-wall 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.

Four-point contact ball bearings advantages

Lightweight: Ideal for robots and portable devices

Space-saving: Small outer diameter and thin wall thickness allow for compact designs

Long life: Optimized raceways and heat treatment processes enhance wear resistance and service life.

Four-point contact ball bearings applications

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

8mm Series - Four Point Contact Ball Bearing

Bearing ModelInner 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)
K02508XP025418324645994032757433490.06
K05008XP05066845116531985443136211580.08
K06008XP060768496273061276433160932190.09
K07008XP070868538480321587424185742900.1
K08008XP080968579687281918424210453700.11
K09008XP0901068618894052289405235264610.13
K10008XP0100116865701005226610395259975620.14
K11008XP0110126869331068930711395284696720.15
K12008XP0120136872861129735012376309507920.16
K13008XP0130146876301188639513366334319230.18
K14008XP01401568796312464442143673590210630.19
K15008XP01501668829613033492153473838312130.2
K16008XP01601768861013592543163384085513730.2
K17008XP01701868892414131596173284332615430.2
K18008XP01801968922814661651183194580717220.21
K19008XP01902068944415063701190644766018880.21
K20008XP02002168972815573759200555014120860.22
K02513XP02551136757852296682512680960.096
K05013XP05076138924120232119012221922800.2
K06013XP060861399441408227210778269393930.23
K07013XP0709613105321517132812043301065000.26
K08013XP08010613111111621038813317332746190.28
K09013XP09011613120031773046415210380307840.31
K10013XP010012613125431869153216485411989310.34
K11013XP0110136131337620104617183874595411310.37
K12013XP0120146131387621025693196724913113070.4
K13013XP0130156131437721918771209185229914960.43
K14013XP0140166131514123222869228205704517460.46
K15013XP0150176131561224075954240856022319630.48
K16013XP01601861316073249191043253606339021930.51
K17013XP01701961316779261451152272626814624940.54
K18013XP01802061317220269491247285287131427530.57
K19013XP01902161317652277431344297937448230240.6
K20013XP02002261318319289101464316957923833750.63
K25013XP02502761320780333722050393059825351680.77
K30013XP030032613228203720626804627811567972420.91
K32013XP032034613237223889329634944512361382320.97
K34013XP034036613245954053132575261313152792861.02
K36013XP0360386132543842149356055780139451104031.08


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.

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Pre-sales service

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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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