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Flanged Slewing Bearing

Flange slewing bearing is a slewing bearing with a flange as the mounting surface. The inner and outer rings are L-shaped and can bear axial loads and radial loads at the same time. However, the load-bearing capacity of flange slewing bearing is lower than that of ordinary slewing bearing. It has the advantages of easy installation and precise positioning.

ItemSpecification / Material
Outer Diameter Range300 mm ~ 10,000 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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Flanged Slewing Bearing

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Flang slewing bearing features

Easy Installation and Positioning: Flange bearings are designed with flange edges. During installation, the flange design secures the bearing in place, preventing axial movement, making them particularly suitable for mechanical structures requiring precise positioning.

Increased Load Capacity: The flange provides additional support, making the bearing more stable under radial and certain axial loads.

Compact Structure: The built-in flange reduces the need for additional fasteners, resulting in a more compact overall mechanical structure.

Multiple Flange Options: Depending on installation requirements, single-flange or double-flange designs are available to meet various mechanical applications.

Wide Applications: Commonly used in motors, gearboxes, automation equipment, and precision machinery where bearing positioning is crucial.

Flang slewing bearing advantages

LTZC flange bearings possess a significant advantage in the industry thanks to their superior manufacturing capabilities and complete production system. Utilizing high-precision machining equipment and rigorous quality control, LTZC achieves fully in-house production from raw material forging, heat treatment, precision machining to assembly and inspection. This ensures the high load-bearing capacity and long service life of every flange bearing, and the bearings hold ISO9001, 14001, 45001, CCS, BV, and ABS certifications.

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The flange bearings feature a compact design and convenient installation, maintaining stable operation under radial loads, axial loads, and overturning moments. They are suitable for various complex working conditions, including hoisting machinery, wind power equipment, and offshore platforms. Benefiting from LTZC's industry reputation in the field of heavy-duty and large-size bearings, users can obtain reliable product guarantees, customized solutions, and rapid delivery support, fully demonstrating LTZC's technical strength in the field of precision bearings.

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Precision GradeBore Tolerance (φ50 mm)Outer Diameter Tolerance (φ90 mm)Radial RunoutAxial RunoutRaceway Roundness ErrorRaceway Surface Roughness Ra
P00 ~ -10 μm0 ~ -13 μm≤ 15 μm≤ 15 μm±0.015 mm≤ 1.6 μm
P60 ~ -8 μm0 ~ -8 μm≤ 10 μm≤ 10 μm±0.010 mm≤ 1.25 μm
P50 ~ -6 μm0 ~ -5 μm≤ 6 μm≤ 8 μm±0.008 mm≤ 0.8 μm
P40 ~ -5 μm0 ~ -3 μm≤ 3 μm≤ 4 μm±0.005 mm≤ 0.4 μm
P20 ~ -3 μm0 ~ -2 μm≤ 2 μm≤ 3 μm±0.003 mm≤ 0.2 μm

Flanged Slewing Bearing 

DesignationWeight (kg)DaDdHH2D1D2nln2Φ1Φ2d2bhbhdlD3
VLI200414N ZT28.532551835056415.549037581218M12458.54011.544.5600412.5
VLI 20 0414N ZT RL236.332551835056415.549037581218M124564011.544.5300412.5
VLI200414N27.532551835056415.549037581218M12
408.544.5295412.5
232.20.0400.01327.1326.551835056415.549037581218M1245.510.545.545.5250412.5
232.20.0400.50326.9326.551835056415.5490375161218M1245.510.545.545.5250412.5
232.21.0475.01327.1326.551735056415.549037581218M1245.510.545.545.5250411.0
I.505.20.00.C35.4326.551835056415.549037581218M12453461046500412.5
VLI200544N ZT40.6444648
56545.5620505101618M12588.544.511.544.5790542.5
VLI200544N38444648
56545.5620505101618M12
44.511.544.5385542.5
232.20.0500.01336.9445.2648
56545.5620505101618M1245.510.545.545.5330542.5
232.20.0500.50336.7445.2648
56545.5620505201618M1245.510.545.545.5330542.5
232.21.0575.01336.9445.2647
56545.5620505101618M1245.510.545.545.5330541.0

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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