250X120 941515105 Roller Assembly LIEBHERR Mixer Drum Roller

Product Specification

Roller Assembly LIEBHERR Mixer Drum Roller Assembly 250X120, 941515105

Durable mixer parts, exquisite workmanship

Color:Customized

Lead Time:30 days

ISO 9001:2015 certification

1. Product Parameter (specification)

Application: Specifically designed for LIEBHERR mixer trucks, likely for medium to large drum sizes (e.g., 10–12 m³ mixer trucks).

Function: Supports the rotating mixer drum, ensuring smooth rotation, weight distribution, and reduced friction during concrete transportation.

· Material:

· Roller Body: Forged from high-strength steel (e.g., 40Cr or 45# steel) with heat treatment to achieve 30–40 HRB surface hardness for wear resistance.

· Bearings: Typically uses premium spherical roller bearings (e.g., from SKF, Timken, or LYC) rated for heavy loads and high rotational speeds.

· Concrete Mixer Truck Drum Roller

· 250*120*38 (250*130*120) complete roller assembly

OEM part number:

SCHWING STETTER 60306954,60309696

Professional-Grade Roller Assembly for Concrete Mixer Trucks: The High-Durability, High-Performance Core Drive Solution

Product Overview: Ensuring Every Mix is Smooth and Reliable

With over 18 years of specialization in manufacturing critical components for concrete mixer trucks, we understand the pivotal role of the Roller Assembly (also known as the drum support or roller wheel assembly). It is far more than a simple support part; it is the central power transmission hub that bears the multi-ton weight of the mixer drum, ensuring its continuous, steady, and reliable rotation. Engineered with materials and processes specifically designed for heavy-duty construction machinery, our Roller Assembly guarantees exceptional reliability and extended service life under the most demanding operational conditions—be it rugged mountain roads, non-stop operation, or extreme weather.

We offer a full-spectrum service, from custom mold design based on your precise truck model drawings to full-scale mass production, ensuring every Roller Assembly is a perfect match for your mixer truck's brand and specifications.

Core Product Specifications & Technical Data

Standard Specifications & Customization Capabilities

2.In-Depth Technical Analysis:

The Victory of Material Science: PA66 + 25% GF

High Strength & Wear Resistance: The PA66 (Nylon 66) base material we select inherently offers excellent mechanical strength and toughness. The addition of 25% Glass Fiber (GF) reinforcement elevates its tensile strength to over 180 MPa and increases wear resistance by a factor of 8 to 10 compared to unreinforced material—a critical feature for withstanding the constant rotational friction of the mixer drum.

Dimensional Stability: The glass fibers significantly reduce the material's coefficient of thermal expansion and moisture absorption. This ensures minimal dimensional change in the Roller Assembly despite daily/nightly temperature swings or humid site conditions, preventing issues like altered bearing clearance or seizure.

Fatigue & Chemical Resistance: This material formulation withstands long-term alternating loads during mixer truck operation and resists degradation from lubricants, slight concrete slurry splatter, and other chemicals common on construction sites.

3.Why Our Roller Assembly is the Preferred Choice for Mixer Truck Manufacturers?

Heavy-Duty Engineering-Focused Design & Validation

Exceptional Load-Bearing Capacity:

Our designs are optimized using FEA (Finite Element Analysis) to ensure even stress distribution. For example, a Roller Assembly designed for an 8-cubic-meter mixer truck features a static load capacity of no less than 12 tons. Dynamic load testing simulates real road conditions, passing over 1 million cycles without failure.

Real-World Case Study: Roller Assemblies supplied to a leading domestic mixer truck manufacturer operating in the harsh mining roads of Inner Mongolia have achieved an average Mean Time Between Failures (MTBF) of over 4,800 hours per set, significantly exceeding industry averages.

Superior Sealing & Dust Protection Design:

Mixer trucks operate in extremely dusty environments. Our Roller Assembly integrates a multi-layer sealing structure (typically combining V-ring seals and labyrinth seals), effectively preventing abrasive dust from entering the bearing interior. This extends the bearing grease contamination cycle by more than 3 times, drastically reducing maintenance frequency and downtime.

Optimized Heat Dissipation & Lubrication:

A unique housing design promotes airflow, aiding in bearing heat dissipation. We incorporate standardized grease fittings and design rational lubrication channels, ensuring the bearing raceways are fully lubricated to prevent dry running and premature failure.

3.product details