150-ton Swing Bearing for Large Excavator 134-45-2249

Overview

This 150-ton large excavator swing bearing is precision-built to handle the continuous heavy impact and composite load conditions of large-scale excavation operations, with superior rigidity, high rotation accuracy, and exceptional wear resistance. It is fully adapted to harsh working scenarios such as open-pit mining, water conservancy project construction, and large-scale earthmoving, providing reliable rotating support for your heavy excavator equipment and reducing equipment failure rates during high-intensity continuous operations.

Technical Specifications & Dimensional Parameters

Key Features & Performance Advantages

Three-Row Roller Structure for Superior Composite Load Resistance

The 134.45.2249 slewing ring adopts a three-row roller structure design, which independently bears axial load, radial load, and overturning moment respectively. This structure greatly improves the bearing's comprehensive load-bearing capacity and impact resistance, fully adapting to the extreme composite load generated during large excavator excavation, rotation, and unloading operations, and ensuring no deformation under long-term full-load operation.

High-Precision Machining for Stable Operation

With strict precision machining control, this swing bearing achieves excellent rotation accuracy, with axial runout controlled within 0.20mm and gear radial runout within 0.70mm. The high-precision tooth profile machining ensures smooth and low-noise rotation, effectively reducing the wear of the hydraulic rotary motor and transmission components, and improving the overall operation stability of the excavator.

Deep Hardening Process for Ultra-Long Service Life

The raceway and tooth surface of the 134.45.2249 excavator swing bearing adopt professional deep induction hardening treatment, with sufficient hardened layer depth for both raceway and tooth root. This process gives the bearing excellent wear resistance, fatigue resistance, and impact resistance, greatly extending the service life in high-dust, high-impact mining and earthmoving environments, and reducing long-term operation and maintenance costs for industrial business clients.

Applications & Compatible Equipment

This 150-ton large excavator swing bearing is specially designed for 150-ton class large hydraulic excavators, and is widely compatible with mainstream large excavator models of the same tonnage. Its core application scenarios include open-pit mining and mineral stripping operations, large-scale water conservancy and hydropower project construction, port bulk cargo handling, large-scale foundation piling and earthmoving engineering, and urban renewal infrastructure excavation. It is the ideal core component for excavator manufacturers, mining enterprises, large engineering contractors, and heavy equipment rental companies.

Installation, Operation & Maintenance Guidelines

To ensure optimal performance and maximum service life of the 134.45.2249 swing bearing, strictly follow these operation guidelines:

Installation: Ensure the flatness and coaxiality of the upper and lower mounting seats before installation; correctly install the positioning pins to ensure accurate positioning, and tighten the mounting bolts diagonally in stages according to the specified torque to avoid uneven stress.

Operation: Avoid long-term overload excavation and sudden impact rotation during operation, and do not use the excavator bucket for side impact operations, to prevent excessive impact load from damaging the bearing raceway and gear teeth.

Maintenance: Regularly check the integrity of the sealing system to prevent dust, sediment, and sewage from entering the raceway; replace lubricating grease according to working conditions, and check tooth surface wear, bolt fastening status, and bearing clearance every 300 working hours in harsh mining environments.

Customization & Bulk Procurement Solutions

We provide targeted customization and bulk procurement solutions for excavator manufacturing enterprises, mining equipment maintenance service providers, and large engineering contractors. Our customization services cover adjustment of mounting hole size and layout, gear parameter optimization, sealing system upgrade, material grade selection, and surface treatment process improvement, to meet your non-standard matching needs for special working conditions and customized equipment. For bulk procurement, we provide exclusive wholesale pricing, stable mass production delivery cycles, and one-to-one technical support, establishing a long-term stable supply chain for your mass production, equipment maintenance inventory, and project supporting needs.

FAQs About 134.45.2249 Swing Bearing

Can the 134.45.2249 swing bearing be used in open-pit mining working conditions?

Yes, this 150-ton excavator swing bearing is designed with a reinforced three-row roller structure and deep hardening treatment, which can fully adapt to the high-dust, high-impact, continuous heavy-load working conditions of open-pit mining. We can also provide customized heavy-duty sealing solutions to further improve the protection performance of the bearing in mining environments.

What is the accuracy grade of the gear teeth of this swing bearing?

The tooth profile accuracy grade of the 134.45.2249 swing bearing reaches 11FH in accordance with GB/T 10095 standard, which ensures stable transmission, low noise, and uniform wear during long-term operation, and is fully compatible with the rotary drive system of large excavators.

What is the hardened layer depth of the bearing raceway?

The hardened layer depth of the 45mm roller raceway is not less than 4.8mm (HRC48), the 32mm roller raceway is not less than 4.0mm (HRC48), and the 25mm roller raceway is not less than 3.8mm (HRC48), which ensures excellent fatigue resistance and long service life under heavy load conditions.