four-point contact slewing bearing,China Slew Bearing, China Slewing Bearing Manufacturers & Suppliers

China Slew Bearing, China Slewing Bearing Manufacturers & Suppliers

four-point contact slewing bearing

Four-Point Contact Slewing Bearing - Precision-Engineered Solutions for Heavy-Duty Applications

Introduction

As a leading ZZ professional slewing bearing manufacturer with decades of engineering expertise, we specialize in producing high-performance four-point contact slewing bearings. Our advanced bearing solutions are designed to meet the most demanding requirements across various industries, providing superior load capacity, precision, and reliability in critical applications.

Product Performance & Quality

Our four-point contact slewing bearings deliver exceptional performance through innovative engineering and rigorous quality control:

• Superior Load Capacity: Engineered to handle combined loads (radial, axial, and moment loads) simultaneously

• Enhanced Rigidity: Four-point contact design provides excellent stiffness and precision

• Low Friction Operation: Optimized raceway geometry reduces friction and energy consumption

• Extended Service Life: Advanced heat treatment processes and precision manufacturing ensure long-lasting performance

• Corrosion Resistance: Available with specialized coatings and materials for harsh environments

Standard Product Range

Series Q (Single Row Four-Point Contact)

Parameter	Range	Notes
Outer Diameter	200 mm - 4,000 mm	Custom sizes available
Inner Diameter	150 mm - 3,800 mm
Height	30 mm - 300 mm
Ball Diameter	8 mm - 50 mm
Ball Quantity	20 - 200	Depending on size

Series QJ (Double Row Four-Point Contact)

Parameter	Range	Notes
Outer Diameter	300 mm - 5,000 mm
Inner Diameter	250 mm - 4,800 mm
Height	60 mm - 500 mm
Ball Diameter	10 mm - 60 mm
Ball Quantity	40 - 400

Load Capacity Specifications

Basic Dynamic Load Rating (C)

• Radial Load: 50 kN - 5,000 kN

• Axial Load: 100 kN - 8,000 kN

• Moment Load: 10 kNm - 1,000 kNm

Basic Static Load Rating (C0)

• Radial Load: 75 kN - 7,500 kN

• Axial Load: 150 kN - 12,000 kN

• Moment Load: 15 kNm - 1,500 kNm

Operating Parameters

Parameter	Standard	Optional
Operating Temperature	-30°C to +120°C	-50°C to +200°C
Maximum Speed	1-10 rpm	Up to 50 rpm
Lubrication	Grease lubrication	Oil lubrication available

Material Specifications

• Inner/Outer Rings: 42CrMo4, 50Mn, or equivalent

• Rolling Elements: Chrome steel (100Cr6) or stainless steel

• Cage: Brass, polyamide, or steel

• Seals: NBR, FKM, or silicone

Precision Grades

• Standard: P0 (Normal)

• Precision: P6, P5, P4

• Backlash: Standard or customized

Customization Options

• Special materials (stainless steel, corrosion-resistant alloys)

• Special heat treatment (case hardening, through hardening)

• Special lubrication systems

• Integrated gearing (internal, external, or both)

• Special sealing solutions

• Sensor integration (position, temperature, load monitoring)

Slewing Bearing

Slewing Drive