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Heavy duty turntable bearing
Heavy duty turntable bearing Heavy duty turntable bearing

Heavy duty turntable bearing

Heavy-duty turntable bearings refer to a specialized type of large-scale slewing support device designed specifically to withstand exceptionally large axial loads, radial loads, and overturning moments. These bearings feature massive structural dimensions—with diameters ranging from 1 meter to over 10 meters—and possess the capability for low-speed, heavy-load rotation.

ItemSpecification / Material
Outer Diameter Range1000 mm ～ 15,000 mm
Ring Material42CrMo / 50Mn / C45
Ball / Roller MaterialGCr15
Cage Material20 Steel or ZL102 Cast Aluminum Alloy
Spacer MaterialNylon 6 / Nylon 66
Raceway HardnessHRC 55 – 62
Gear TypeGearless, Internal Gear, External Gear
Delivery Time10 – 30 Days


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Heavy duty turntable bearing

LTZC heavy duty turntable bearing Specifications

Bearing ModelDimensionsMounting DimensionsStructural DimensionGear dataWeight

DmmdmmHmmD1mmD2mmnommdmmmLmmn1D3mmd1mmH1mmhmmbmmxMmmDemmz
113.25.500602398755664342018M163244985026510600.553677480
113.25.560662458756264942018M163245585626510600.554278690
113.25.630732528756965642418M163246286326510600.56494.483100
113.25.710812608757766442418M163247087126510600.56572.496110
113.28.800922678828787223022M204067988027210650.58635.280170
113.28.9001022778829788223022M204068989027210650.58739.293190
113.28.100011228788210789223622M2040699810027210650.51082483210
113.28.1120124299882119810423622M20406111811227210650.51094495230
113.32.12501390111091133711634026M24485124812528110750.5121048.888350
113.32.14001540126091148713134026M24485139814028110750.5121192.8100400
113.32.16001740146091168715134526M24485159816028110750.5141391.6100440
113.32.18001940166091188717134526M24485179818028110750.5141573.6113500
113.40.200021781825112211018914833M306081997200310012900.5161734.4109900
113.40.224024182065112235021314833M306082237224310012900.5161990.41251000
113.40.250026782325112261023915633M306082497250310012900.5182239.21251100
113.40.280029782625112291026915633M306082797280310012900.5182527.21411250
113.50.315033762922134328630145645M4284831473153122121100.5202628142150
113.50.355037763322134368634145645M4284835473553122121100.52032281622470
113.50.400042263772134413638646045M42841039974003122121100.5223660.8162800
113.50.450047264272134463643646045M42841044974503122121100.5224166.81903100

LTZC heavy duty turntable bearing Specifications

Bearing ModelDimensionsMounting DimensionsStructural DimensionGear dataweight
DmmdmmHmmD1mmD2mmnommdmmmLmmn1D3mmd1mmH1mmhmmbmmxMmmDemmz
113.25.500602398755664342018M163244985026510600.553677480
113.25.560662458756264942018M163245585626510600.554278690
113.25.630732528756965642418M163246286326510600.56494.483100
113.25.710812608757766442418M163247087126510600.56572.496110
113.28.800922678828787223022M204067988027210650.58635.280170
113.28.9001022778829788223022M204068989027210650.58739.293190
113.28.100011228788210789223622M2040699810027210650.51082483210
113.28.1120124299882119810423622M20406111811227210650.51094495230
113.32.12501390111091133711634026M24485124812528110750.5121048.888350
113.32.14001540126091148713134026M24485139814028110750.5121192.8100400
113.32.16001740146091168715134526M24485159816028110750.5141391.6100440
113.32.18001940166091188717134526M24485179818028110750.5141573.6113500
113.40.200021781825112211018914833M306081997200310012900.5161734.4109900
113.40.224024182065112235021314833M306082237224310012900.5161990.41251000
113.40.250026782325112261023915633M306082497250310012900.5182239.21251100
113.40.280029782625112291026915633M306082797280310012900.5182527.21411250
113.50.315033762922134328630145645M4284831473153122121100.5202628142150
113.50.355037763322134368634145645M4284835473553122121100.52032281622470
113.50.400042263772134413638646045M42841039974003122121100.5223660.8162800
113.50.450047264272134463643646045M42841044974503122121100.5224166.81903100
114.50.450047264272134
463643646045M42841044974503122121100.5254160167
3100

LTZC heavy duty turntable bearing Specifications

Bearing ModelDimensionsMounting DimensionsStructural DimensionGear dataWeight
DmmdmmHmmD1mmD2mmnommdmmmLmmn1D3mmd1mmH1mmhmmbmmxMmmDemmz
131.25.5006343661485984022418M1632537526413832800.55664130224
131.25.5606944261486584622418M1632597586413832800.55724142240
131.25.6307644961487285322818M1632667656413832800.56808.8132270
131.25.7108445761488086122818M1632747736413832800.56886.8145300
131.32.8009646361829206803622M20408418304172401200.581006.4123500
131.32.900106473618210207803622M20409419304172401200.581102.4135600
131.32.1000116483618211208804022M2040104110305172401200.5101218119680
131.32.11201284956182124010004022M2040116111505172401200.5101338131820
131.40.125014451055220139311074526M2448130012875210501500.51215061231200
131.40.140015951205220154312574526M2448145014375210501500.5121665.61361300
131.40.160017951405220174314574826M2448165016376210501500.5141873.21311520
131.40.180019951605220194316574826M2448185018376210501500.5142069.21451750
131.45.200022211779231215518456033M3060205520336219541600.5162300.81412400
131.45.224024612019231239520856033M3060229522736219541600.5162556.81572700
131.45.250027212279231265523457233M3060255525338219541600.5182822.41543000
131.45.280030212579231295526457233M3060285528338219541600.5183110.41703400
131.50.315034322868270334229587245M4284321331968258651800.520353617450000
131.50.355038323268270374233587245M4284361335968258651800.52239361945680
131.50.400042823718270419238088045M4284406340468258651800.5224395.61976470
131.50.450047824218270469243088045M4284456345468258651800.5224901.62207320

LTZC heavy duty turntable bearing Specifications

Bearing ModelDimensionsMounting DimensionsStructural DimensionGear dataWeight
DmmdmmHmmD1mmD2mmnommdmmmLmmn1D3mmd1mmH1mmhmmbmmxMmmDemmz
133.25.5006343661485984022418M16324744634032800.5533768224
133.25.5606944261486584622418M163253452311032800.5539780240
133.25.6307644961487285322818M163260459341032800.56458.477270
133.25.7108445761488086122818M163268467341032800.56536.490300
133.32.8009646361829206803622M2040770759410401200.58595.275500
133.32.900106473618210207803622M2040870859410401200.58691.287600
133.32.100116483618211208804022M2040970959510401200.51078479680
133.32.1121284956182124010004022M204010901079510401200.51090491820
133.40.12514451055220139311074526M24481213100510501500.512988.8831200
133.40.14015951205220154312574526M244813631350510501500.5121145961300
133.40.16017951405220174314574826M244815631550610501500.5141336961520
133.40.18019951605220194316574826M244817631750610501500.51415321101750
133.45.20022211779231215518456033M306019671945612541600.51617021072400
133.45.22424612019231239520856033M306022072185612541600.51619261212700
133.45.25027212279231265523457233M306024672445812541600.5182185123000
133.45.28030212579231295526457233M306027672745812541600.51824911393400
133.50.31534322868270334229587245M428431043090812651800.52027681395000
131.50.35538323268270374233587245M4284350434908258651800.52031681595680
131.50.40042823718270419238088045M4284395439408258651800.5223111656470
131.50.45047824218270469243088045M4284445444408258651800.52241231887320

LTZC heavy duty turntable bearing Specifications

Bearing ModelDimensionsMounting DimensionsStructural DimensionWeight (kg)
DmmdmmHmmD1mmD2mmnmmdmmmLmmnlD3mmd1mmH1mmhmm
130.25.5006343661485984022418M163247446341032224
130.25.5606944261486584622418M163253452341032240
130.25.6307644961487285322818M163260459341032270
130.25.7108445761488086122818M163268467341032300
130.32.8009646361829206803622M204077075941040500
130.32.900106473618210207803622M204087085941040600
130.32.1000116483618211208804022M204097095951040680
130.32.11201284956182124010004022M20401090107951040820
130.40.125014451055220139311074526M244812131200510501200
130.40.140015951205220154312574526M244813631350510501300
130.40.160017951405220174314574826M244815631550610501520
130.40.180019951605220194316574826M244817631750610501750
130.45.200022211779231215518456033M306019671945612542400
130.45.224024612019231239520856033M306022072185612542700
130.45.250027212279231265523457233M306024672445812543000
130.45.280030212579231295526457233M306027672745812543400
130.50.315034322868270334229587245M428431043090812655000
130.50.355038323268270374233587245M4284350434908258655680
130.50.400042823718270419238088045M4284395439408258656470
130.50.450047824218270469243088045M4284445444408

258

657320

What are heavy duty turntable bearings?

Heavy-duty slewing bearings constitute a high-load-bearing slewing support system capable of withstanding operating conditions characterized by extreme loads, massive dimensions, and low-speed rotation. These extra-large slewing bearings are primarily utilized in applications involving extreme heavy loads and continuous operations—such as in metallurgy, shield tunneling machinery, and large-scale lifting equipment.

Differences Between LTZC Heavy Duty Turntable Bearings and Standard Slewing Bearings

Comparison ItemLTZC Heavy Duty Turntable BearingsStandard Slewing Bearings
DefinitionHigh-duty slewing bearings specially designed for extremely heavy-duty and harsh working conditionsStandard slewing bearings used for general rotating equipment
Main FeaturesUltra-high load capacity, impact resistance, long service life, low-speed heavy-duty rotationVersatile, cost-effective, suitable for medium and light loads
Load CapacityCan withstand extremely high axial loads, radial loads, and tilting momentsRelatively lower load capacity
Structural TypeMainly uses three-row roller, ball-roller combination, and reinforced raceway structuresMainly uses single-row ball slewing bearing and four-point contact ball slewing bearing
Rolling Element DesignLarge-size rollers or reinforced steel ballsStandard steel balls or rollers
Material StrengthUses high-strength forged materials such as 42CrMo and 50MnMostly standard bearing steel
Heat Treatment ProcessDeep hardening, quenching & tempering, reinforced raceway treatmentConventional surface hardening
Impact ResistanceExcellent, suitable for frequent shock loadsModerate
Rotational SpeedDesigned for low-speed heavy-duty operationSuitable for medium and low-speed operation
Precision GradeCapable of high-precision operationMostly standard industrial precision
Customization CapabilityCan be custom-designed according to working conditionsMainly standardized models
Typical ApplicationsPort machinery, tunnel boring machines, offshore platforms, mining equipment, wind power, large cranesSmall construction machinery and general automation equipment
Operating EnvironmentSuitable for dusty, high-impact, and heavy-load environmentsSuitable for normal industrial environments

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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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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