Multifunctional Rotary Screening Bucket for CAT 336

The Multifunctional Rotary Screening Bucket for CAT 336 is an upgraded multi-functional screening attachment exclusively designed for the heavy-duty operation scenarios of CAT 336 large excavators, thoroughly solving the industry challenges of ordinary universal screening buckets, such as insufficient bearing capacity, limited functions, and poor adaptability to high-intensity operations. As a mainstream large excavator in engineering and mining fields, CAT 336 features high hydraulic flow, high working pressure, and high load capacity. It is widely used in high-intensity projects such as large-scale mining, large-area roadbed backfilling, full-range river dredging, and urban large-scale solid waste treatment.

Most universal screening buckets are designed for medium and small-tonnage machines. When matched with CAT 336 excavators, they may experience hydraulic overload, drum deformation, screening instability, and limited single feeding capacity, which seriously affects the construction efficiency of large equipment. Precisely developed based on the original working condition data of CAT 336, this multifunctional screening bucket achieves comprehensive upgrades in structural strength, hydraulic matching, and functional design, fully meeting the heavy-duty operation requirements of large excavators.

Material & Craftsmanship

Mine-Grade High-Strength Steel Structure

In terms of production technology and core materials, this CAT336-adapted screening bucket adopts mine-grade thickened high-manganese steel integral forging technology without splicing welds and weak stress points. Compared with ordinary welded screening equipment, its impact strength is increased by 50% and wear service life is doubled, enabling long-term screening of high-strength and high-wear materials such as mine raw stones, hard soil, and mixed stones.

Reinforced Screening Drum Design

The core screening drum adopts a double-layer reinforced structure with CNC precision hole opening technology and uniform regular screen holes. It is equipped with an auxiliary anti-blocking brush structure to effectively solve the hole-blocking problem caused by wet and muddy materials.

High-Performance Hydraulic Drive System

The core hydraulic drive system adopts a high-torque imported hydraulic motor precisely matched with the CAT 336 hydraulic system, which has passed 24-hour continuous full-load fatigue tests. Featuring waterproof, dustproof, and anti-sediment performance, it fully releases the hydraulic power of CAT 336 equipment without power loss or overload heating, supporting all-weather uninterrupted heavy-duty operation.

Application Scenarios

Mining Material Processing

The Multifunctional Rotary Screening Bucket for CAT 336 is suitable for mine aggregate grading and high-strength material screening, improving processing efficiency in large-scale mining operations.

River Sand & Gravel Separation

It supports river sand-gravel purification and silt separation, providing efficient material classification for water conservancy and dredging projects.

Construction Waste Recycling & Road Engineering

The equipment is widely applied in construction waste screening and recycling, roadbed backfill material screening, and garden soil improvement screening.

Different from the single-function operation mode of traditional screening buckets, this product realizes multi-purpose operation through switchable working modes according to different construction requirements, providing flexible solutions for various heavy-duty working conditions.

Product advantages

1. Model-exclusive heavy-load adaptation with zero power loss

Different from peer universal screening buckets with compromised parameters for multi-model adaptation, this product is precisely calibrated one-to-one for the original high-flow and high-pressure hydraulic system of CAT 336, perfectly matching the equipment's heavy-load output without hydraulic overload, power waste and body vibration, with far higher adaptation stability than universal products.

2. Multi-functional integration with full scenario coverage

Breaking the single-function limitation of traditional screening buckets, it integrates four major functions of sand-gravel grading, silt separation, solid waste treatment and soil improvement, completing various working conditions without accessory replacement and greatly saving equipment procurement and replacement costs.

3. Mine-grade wear-resistant technology with doubled service life

Adopting thickened high-manganese steel integral forging and double-layer drum reinforcement technology, it features excellent impact resistance, deformation resistance and wear resistance, specially adapted to high-wear working conditions such as mines and heavy-load infrastructure. Its service life is more than twice that of ordinary welded screening buckets.

4. Anti-blocking and high-efficiency screening for dry and wet materials

The optimized curved screen and auxiliary anti-blocking brush structure solve the pain point of easy hole blockage of ordinary screening buckets in wet and muddy material screening, realizing rapid screening of dry and wet mixed materials with efficiency increased by more than 35%.

5. Reliable factory quality and perfect after-sales service

With 12 years of export and production experience in engineering accessories, we support exclusive non-standard customization for CAT 336, full factory inspection, global sales to more than 40 countries and perfect overseas after-sales and technical support.

Customer Case

Case 1: Bulk Aggregate Grading Project for Large Domestic Mines

A large mining enterprise in Shandong operates 12 sets of CAT 336 excavators for long-term mine raw stone excavation and aggregate grading operations. Previously, the company used universal screening buckets, which suffered from limited screening capacity, frequent blockage when processing hard ore, and hydraulic trip failures caused by poor system matching, seriously affecting large-scale mining efficiency.

In 2024, the enterprise purchased 15 sets of Multifunctional Rotary Screening Bucket for CAT 336 in bulk. Specifically designed for the heavy-load hydraulic parameters of CAT 336 excavators, the large-capacity screening drum effectively matches the working efficiency of large machines. The multifunctional design also meets the dual requirements of ore grading and waste residue processing.

After implementation, the equipment achieved stable operation without hydraulic failures or drum deformation issues. The qualified rate of ore screening increased to 99%, while the daily output of a single machine increased by 40%. This significantly reduced labor costs and equipment maintenance expenses, leading to the establishment of a long-term strategic cooperation relationship.

Case 2: Customized River Regulation and Infrastructure Backfilling Project in the Middle East

A comprehensive engineering company in Saudi Arabia is responsible for local river dredging, saline-alkali land improvement, and large-scale infrastructure backfilling projects, using CAT 336 excavators as the primary construction equipment. Due to complex working conditions involving mixed materials such as silt, sand, gravel, and saline-alkali soil, traditional screening buckets faced problems including frequent blockage, rapid wear, limited functions, and the need for multiple machines, resulting in increased construction costs.

Based on the customer's requirements, we customized adaptive multifunctional rotary screening buckets with optimized anti-blocking screens, sealed structures, and enhanced corrosion and wear resistance. The equipment integrates multiple functions, including silt separation, sand-gravel screening, and soil processing, allowing one machine to replace several single-purpose attachments.

After delivery, the equipment achieved perfect compatibility with the hydraulic power system of CAT 336 excavators and maintained stable operation under high-intensity working conditions for 10 consecutive months without failures. The solution reduced equipment investment by 30% for the customer and successfully supported multiple government infrastructure projects.

Product Specifications

FAQ

Q1: Is this multifunctional screening bucket fully compatible with CAT 336 excavator and requires oil circuit modification?

A1: It is fully compatible and requires no oil circuit or body modification. Customized according to the original installation dimensions, hydraulic parameters and heavy-load standards of CAT 336, the product has precisely matched hole positions, interfaces and power parameters, supporting direct operation after installation with zero debugging cost and no damage to the excavator hydraulic system.

Q2: Can screen hole size and overall specifications be customized?

A2: Full-dimensional personalized customization is supported. We can customize screen holes from 8mm to 50mm and adjust drum volume, overall size and rotating speed according to customers' material particle size, operation scenarios and construction needs. All customized parameters are calculated by load test, fully adapting to the operation load of CAT 336 excavator to ensure construction safety and efficiency.

Q3: What are the core advantages of the multifunctional model over ordinary screening buckets?

A3: The core advantages are multi-purpose operation, heavy-load stability and high adaptability. Ordinary screening buckets have single function and weak bearing capacity, prone to faults and low efficiency when used on CAT336. This exclusive multifunctional product integrates multiple operation functions, and its heavy-load structure adapts to high-intensity construction of large equipment with 100% power utilization. One equipment can replace multiple single-function accessories, greatly reducing comprehensive construction costs.

Q4: What is the overseas after-sales service system for the product?

A4: For overseas customers, we provide English operation manuals, remote video guidance and cross-border accessory direct delivery services to support global project after-sales docking.

Q5: Do you support sample testing and large-batch export orders?

A5: We support sample testing, small-batch trial orders and large-batch engineering export orders. Our factory has complete export qualifications and can provide product test reports, compliance certifications and full sets of customs declaration documents. Our products are exported to Europe, America, the Middle East, Southeast Asia and other regions all year round, meeting the procurement needs of various overseas engineering projects.

CAT Attachments – Direct from the Manufacturer

With 12 years of experience, we specialize in attachments for a full range of models from brands such as CAT, Komatsu, Sany, and XCMG. Our CAT 336 screening buckets undergo rigorous heavy-duty field testing, hydraulic system checks, and wear-resistance trials, ensuring stable performance and low failure rates. Exported to over 40 countries, they are the preferred choice for mining, infrastructure, and water conservancy projects. We offer customization, volume orders, testing, and consultation, providing tailored one-on-one solutions at factory-direct prices. Contact us today for a quote or to request a sample!