Single Row Ball Slewing Bearing, Single Row Crossed Roller Slewing Bearing, Three Row Roller Slewing Bearing, Rotation Drive,

Core Business And Products

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Professional support in selection calculations, operating condition analysis, drawing verification, and 3D modeling.

Our Products

You can rest assured that repairs are only performed with your prior approval of the work

SE Series

Three Row Roller Slewing Bearing (13 Series)-- External Gear

Three Row Roller Slewing Bearing (13 Series)--Internal Gear

Single Row Crossed Roller Slewing Bearing (HJ Series）-- Non Gear

Single Row Crossed Roller Slewing Bearing (HJ Series）-- External Gear

Single Row Crossed Roller Slewing Bearing (HJ Series）-- Internal Gear

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Why Choose LANGLEY MACHINERY

We promise that every product we export embodies the values of
"precision, reliability and efficiency".

Excellent Manufacturing & Quality Control

We are equipped with a full range of advanced processing equipment and precision testing instruments.

Strong Technical & Customization Capabilities

Our professional engineering team can provide customized drawings according to customers’ special working conditions.

Global Service

Our products are exported to more than 50 countries and regions including Europe, North America, Southeast Asia and the Middle East.

Custom Processing Of High-Precision Internal And External Gears.

Precision Manufacturing
Driving The Future

Xuzhou Langley Machinery Equipment Co., Ltd is a leading provider of transmission solutions in the industry, specializing in the design, manufacturing, and export of high-performance slewing bearings, slewing drives, and their supporting components.

We are not only a product manufacturer but also a trusted technical partner for our clients, committed to delivering stable, reliable, and technologically advanced rotary core components for global industries such as engineering machinery, new energy, automation, and special equipment.

Project Case

Power Plant Equipment
Port Equipment
Construction Machinery
Gantry Crane

Power Plant Equipment

Core Requirements
Replace with high-reliability slewing bearings, enhance anti-corrosion and sealing performance, customize according to customer drawings, and provide on-site installation guidance and comprehensive after-sales support.

Customized Solution

Combining the customer's drawings and actual working conditions, we provide an exclusive customized solution: adopting 42CrMo material with raceway quenching and hardening; triple anti-corrosion sealing design suitable for corrosive environments; precise machining to ensure installation compatibility, and on-site installation guidance is available.
Port Equipment

Challenges & Requirements

• Extreme Working Conditions: High temperature, high humidity, and high salt spray marine environment, combined with heavy impact loads.
• Core Requirements: Replace with highly reliable slewing bearings, emphasize anti-corrosion and sealing performance, and provide on-site installation guidance.

Customized Solution
Manufactured in accordance with the client’s drawings. Adopted high-strength 42CrMo steel with raceway surface hardening treatment to improve impact resistance and fatigue resistance.Fully met the client’s requirements.
Construction Machinery

Customer Requirements
• Adapt to large-tonnage truck cranes: Meet the rotational load-bearing requirements for 10-ton+ heavy-duty lifting.
• High rotation precision: Ensure the stability and safety of lifting operations.
• Adapt to complex Turkish working conditions: Feature dust-proof, impact-resistant, and long-life characteristics.
• Customized installation dimensions: Achieve perfect adaptation based on the equipment structure.

Langley Solutions

Xuzhou Langley Machinery Equipment provided customized large-module slewing bearings for the customer:
• Product Selection: Three row roller slewing bearings for the truck crane application, the gear ring with precision
• Process Upgrade: Adopted 42CrMo quenched and tempered steel, undergoing overall quenching + tooth surface high-frequency quenching. This improved load-bearing capacity by 30% and extended service life by 50%.
• Sealing Optimization: Equipped with a dual labyrinth seal structure, effectively coping with dusty and outdoor working conditions to reduce maintenance costs.
• Fast Delivery: From drawing confirmation to finished product delivery, 25-35 days were required to meet the customer’s mass production needs.
Gantry Crane

Core Component
This is a 25-ton heavy-duty steel coil/sheet lifting clamp for overhead cranes, and the slewing bearing is its core component.

Installation Location

Mounted at the top yellow large disc of the clamp, connecting the crane hook above and the clamp body below.

News & Events

News

Key Considerations For Slewing Drive SE Series Selection

Load CalculationIt is essential to accurately calculate the Axial Load (Fa), Radial Load (Fr), Overturning Moment (M), and the required Output Torque (T) under the actual operating conditions.Verification of Self-Locking CapabilityNot all worm gear drives are absolutely self-locking. Self-locking d

09/05/2026

News

Why are three-row roller slewing rings so expensive, and where are they used?

Structure: It consists of an upper and lower row of axial rollers to withstand overturning moments, and a middle row of radial rollers to handle radial loads. This clear division of labor allows its load-bearing capacity to far exceed that of single-row ball or cross roller slewing rings of the sa

09/05/2026

News

Does a slewing ring need greasing? How and with what grease?

Yes, it absolutely needs greasing! This is essential for ensuring its service life.Method:Inject grease through the grease fittings (zerks) on the outer ring or end face using a grease gun. Continue until the old grease is completely purged from the seals. Rotate the bearing during greasing to ens

09/05/2026

News

What Should Be Noted During Slewing Ring Installation? (Mounting Surface Flatness, Bolt Tightening Torque)

Key PointsMounting Surface Accuracy: The flatness must meet the requirements specified in the bearing documentation (typically on the order of millimeters per meter). The surface must have sufficient strength and must not deform.Bolts: High-strength bolts with a property class of 10.9 or higher mu

09/05/2026

News

Precise Adaptation Customization On Demand

We offer full-scenario, high-precision and highly adaptable custom slewing bearing solutions. Supported by professional technology, we convert customized requirements into reliable solutions.

Working Condition Adaptation Customization
Non-Standard Dimension Customization
Material & Process Customization
Technical Parameter Customization
Full-Process Technical Support

Choose Langley Machinery, and you choose the endless possibilities of rotation.

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Our Products

SE Series

Three Row Roller Slewing Bearing (13 Series)-- External Gear

Three Row Roller Slewing Bearing (13 Series)--Internal Gear

Single Row Crossed Roller Slewing Bearing (HJ Series）-- Non Gear

Single Row Crossed Roller Slewing Bearing (HJ Series）-- External Gear

Single Row Crossed Roller Slewing Bearing (HJ Series）-- Internal Gear

Excellent Manufacturing & Quality Control

Strong Technical & Customization Capabilities

Global Service

Key Considerations For Slewing Drive SE Series Selection

Why are three-row roller slewing rings so expensive, and where are they used?

Does a slewing ring need greasing? How and with what grease?

What Should Be Noted During Slewing Ring Installation? (Mounting Surface Flatness, Bolt Tightening Torque)

Quick Links

Slewing Bearings And Slewing Drives

Other Construction Machinery Accessories

Product Case

Customized Service