RKS.204040101001 Slewing Bearings

RKS.204040101001 Slewing Bearing – Customized Four Point Contact Ball Slewing Ring with External Gear for Industrial Rotation

Luoyang Heng Guan Bearing Technology specializes in manufacturing the RKS.204040101001 Slewing Bearings, a customized single row four point contact ball slewing ring bearing with external gear. This 1144×868×100mm bearing features a 980 mm mean raceway diameter, delivering robust load ratings of 588 kN dynamic and 4470 kN static capacity in a compact 220 kg package. Leveraging over 30 years of precision bearing manufacturing experience in Luoyang—China's bearing industry hub—our ISO9001-certified facility produces slewing bearings from 50-10000mm diameter across P0, P6, P5, and P4 precision grades. Our team of 50+ R&D and manufacturing specialists ensures each RKS.204040101001 meets international standards for truck cranes, wind turbines, and heavy excavator applications worldwide.

Technical Specifications & Dimensions

The RKS 204040101001 bearing delivers precise dimensional accuracy for direct SKF replacement and cross-reference compatibility with LRKS.204040101001.

Interchange References: SKF RKS.204040101001, LILY LRKS.204040101001, RKS.302070202001 (same-band variant), VLA20 series (structure reference).

Core Engineering Advantages

Four-Point Contact Raceway Design

The Gothic-arch raceway profile of the RKS.204040101001 bearing handles combined axial, radial, and tilting moment loads simultaneously in both rotational directions. This single row four point contact ball configuration eliminates the need for paired bearings in many applications.

Your excavator benefits from simplified assembly and reduced weight. The compact 100 mm section height integrates into tight envelope designs while maintaining structural integrity under dynamic loading.

Exceptional Load-to-Weight Ratio

At just 220 kg, this customized four point contact ball slewing bearing delivers 4470 kN static capacity—verified across three independent technical sources. The external gear flange slewing bearing design provides direct pinion engagement through its module 10 gearing with 111 teeth.

Permissible tooth forces reach 132 kN maximum, ensuring reliable power transmission in heavy-duty rotation mechanisms. The 8 mm profile shift optimizes gear mesh geometry for smooth torque distribution.

Drop-In Replacement Compatibility

We manufacture the 204040101001 to exact SKF dimensional standards. Your existing bolt patterns—36 holes at 1050 mm diameter (outer) and 29 holes at 910 mm (inner)—align perfectly with no machining modifications required.

Send us your CAD drawing or part number, and our engineering team confirms interchange compatibility within 24 hours. We cross-reference against LRKS.204040101001 and RKS.302070202001 variants to ensure fit accuracy.

Premium Materials & Heat Treatment

Ring forgings use 50Mn or 42CrMo4 alloy steel for optimal core toughness. Induction hardening creates HRC 55-62 surface layers on raceways, resisting contact fatigue and wear over millions of rotation cycles.

GCr15 chrome steel balls in precision spacer retainers maintain consistent load distribution. NBR double-lip seals protect internal components across -40°C to +110°C operating temperatures, matching your diverse environmental conditions.

Industrial Application Solutions

Truck Crane & Mobile Crane Slewing Systems

The RKS.204040101001 Slewing Bearings external gear slewing bearing is extensively specified for truck crane slewing bearing applications. Four independent suppliers list this reference specifically for mobile crane duty cycles.

Your crane superstructure rotates smoothly through 360° while the four-point contact design manages vertical hook loads and boom tilting moments simultaneously. The external gear enables direct hydraulic motor engagement for precise load positioning.

Wind Turbine Yaw & Pitch Mechanisms

As a wind turbine yaw bearing external gear solution, this reference handles nacelle rotation into prevailing wind directions. The 4470 kN static capacity withstands storm-induced lateral forces while maintaining positioning accuracy.

Hardened gear teeth (HRC 50-58 surfaces) mesh reliably with module 10 yaw drive pinions over 20+ year service lifetimes. The compact design reduces nacelle weight—a critical factor in tower loading calculations.

Excavator & Construction Equipment

For excavator slewing bearing replacement, the 36-bolt outer pattern matches standard upper-frame mounting configurations. The bearing transmits swing torque from hydraulic motors while absorbing dig cycle shock loads through its spacer-retained ball complement.

Your maintenance teams appreciate the through-bolt design for simplified field replacement. We provide installation manuals and remote video support for first-time installations.

Port Excavator & Material Handling

Port excavator slewing bearing applications—ship loaders, container spreaders, and gantry cranes—benefit from the external gear's direct drive capability. The 1110 mm pitch circle accommodates standard marine-duty pinion assemblies.

Dual-lip seals exclude salt spray and dust in harsh marine environments. We recommend lithium-based NLGI Grade 2 grease with rust inhibitors for coastal installations.

Photovoltaic Tracker & Solar Arrays

Photovoltaic tracker slewing bearing external gear models reduce actuator torque requirements through low-friction ball contact. The 220 kg weight minimizes structural loading on single-axis and dual-axis tracker frames.

Your solar farm achieves precise panel angle adjustments with minimal power consumption. The sealed design operates maintenance-free between scheduled re-lubrication intervals.

Robotics & Precision Automation

Where robotics slewing bearing external gear systems demand high positioning repeatability, our ground raceways deliver controlled clearances. Medical device slewing bearing configurations can be customized from this platform with modified sealing and materials.

Contact our engineering team for custom specifications when standard parameters don't match your precision automation requirements.

Manufacturing Quality & Testing

Our CNC vertical lathes machine raceway profiles to ±0.02 mm tolerances. CNC quenching machines apply controlled induction heating patterns, ensuring uniform hardness depth across the raceway width.

Every RKS.204040101001 slewing ring bearing undergoes coordinate measuring machine inspection for dimensional accuracy. Vibration testers verify smooth rotation before gear hobbing operations.

We maintain rigorous process controls from 42CrMo4 forging receipt through final grease packing. Each bearing includes factory test reports documenting load capacity verification and gear tooth contact patterns.

Packaging & Global Delivery

We protect each bearing with rust-preventive oil coating, plastic wrap, and reinforced plywood crates suitable for sea freight. Export packaging meets ISPM-15 standards for international shipment.

Our products currently serve customers across 50+ countries including the United States, Germany, United Kingdom, South Africa, Australia, Turkey, Russia, and throughout the Middle East and Southeast Asia. We support FOB, CIF, and DDP terms to match your logistics preferences.

FAQ

Q: What makes the RKS.204040101001 suitable for heavy excavator?

A: The RKS.204040101001 slewing bearing combines high static capacity (4470 kN) with integrated external gearing in a weight-optimized design. Its four-point contact geometry handles axial, radial, and moment loads simultaneously—essential for crane, excavator, and wind turbine applications where space and weight are constrained.

Q: How do I verify this bearing will fit my equipment?

A: Measure your existing bearing's outside diameter (should be 1144 mm), inside diameter (868 mm), and bolt hole circles (1050 mm outer / 910 mm inner). Count mounting holes (36 outer / 29 inner, Ø22 mm). Send us these dimensions or your current part number for 24-hour interchange confirmation.

Q: What is the expected service life?

A: Service life depends on load conditions and maintenance. Under rated loads with proper lubrication every 100 operating hours, expect 20,000+ rotation hours. Overload or contamination significantly reduces bearing life. Our engineers can calculate L10 life for your specific duty cycle.

Q: Can you customize dimensions or gear specifications?

A: Yes. Our CNC equipment handles custom modifications including non-standard bolt patterns, special seal materials, altered gear modules, and mounting flange variations. Provide 2D drawings (3D preferred) with tolerance requirements for quotation. Customization MOQ typically starts at 5 pieces.

Q: What delivery time should I expect?

A: Stock units of the 204040101001 ship within 2-3 business days. Non-stock standard configurations require 25-30 days production lead time. Custom engineered variants need 35-45 days depending on complexity. Contact mia@hgb-bearing.com for current availability and fast-track options.

Q: Which lubrication type works best for my application?

A: Standard lithium-based grease suits most industrial applications from -25°C to +110°C. For extreme cold (below -40°C), specify synthetic PAO-based greases. High-temperature environments (above 110°C) require PFPE synthetic lubricants. Automatic lubrication systems are recommended for continuous-duty cycles.

Contact Us

Ready to source the RKS.204040101001 Slewing Bearings for your next project? Our engineering team provides technical consultation, CAD drawings, and installation guidance to ensure successful integration. Request your factory-direct quotation and datasheet PDF today at mia@hgb-bearing.com