Recently, at a project site in Russia, the ALLIS SAGA DSA1860T banana screen seamlessly replaced the original DS303 screening unit of a world-renowned brand’s ST620 track-mounted mobile screening plant.

After replacement, the equipment achieved full compatibility with the original plant system, with all operating parameters met and operating conditions restored. The unit's outstanding stable performance has earned high recognition from the customer.

### 01 Project Overview

♦ Project Location: Quarry in the Republic of Karelia, Russia

♦ Commissioning Time: 2025

♦ Ore Type: Diabase

♦ Operating Conditions: High-hardness rock & high-load operation

♦ Equipment Configuration: DSA1860T banana screen, deployed to replace the original DS303 vibrating screen on the ST620 mobile screening plant

The customer specializes in high-quality crushed stone production, geological exploration, and mine planning & design. Its product portfolio covers construction aggregates, railway ballast, and special aggregate blends for highway and airport subgrades. Serving high-end infrastructure projects, the customer has extremely high requirements for equipment stability, throughput, crushing efficiency, and screening accuracy.

Frequent failures occurred on the original DS303 vibrating screen after long‑term high‑load operation on the mobile plant, creating an urgent need for high‑quality screening equipment that could provide fast and seamless replacement.

### 02 Precision Replacement Under Harsh Conditions

The customer set three strict retrofit criteria:

‑ Ensure equipment performance fully meet original machine specifications;

‑ Guarantee full compatibility with all mounting interfaces of the original plant;

‑ Replace the conventional spring damping structure with more stable and reliable rubber damping pads.

In response to the customer’s requirements and the harsh conditions of high‑hardness ore, ALLIS SAGA leveraged its strong customization capability to develop the DSA1860T heavy‑duty three‑deck banana screen. It precisely matches the parameters of the original equipment and achieves full compatibility with the entire ST620 plant system.

Building on ALLIS SAGA’s solid reputation and brand recognition built through years of presence in the Russian market, the customer finally selected ALLIS SAGA as its partner after multiple rounds of technical discussions and expert evaluations.

After replacement, the throughput and operating parameters of the mobile screening plant were fully restored. Its screening efficiency and processing capacity meet the original machine specifications, with significantly enhanced stability and efficiency. The retrofit result far exceeded the customer’s expectations.

▐ DSA Series Banana Screens

The ALLIS SAGA DSA series banana screens are double-inclination vibrating screens. Materials flow rapidly at the feed end and slow down at the discharge end, providing higher throughput than conventional screens.

Featuring a low overall height, the screens are well‑suited for screening applications with limited installation height but high capacity requirements, making them an ideal choice for mobile screening plants.

1. Double-row Bearings: The vibrator features double-row bearings and grease lubrication for more stable operation.

2. Double-inclination Design: The double-inclination screen deck enables maximum equal‑thickness screening.

3. High Screening Efficiency: With high throughput and a compact structure, the screens are widely used in modular and mobile crushing & screening plants.

4. Impact‑resistant & Low-loss: The rubber buffer damping structure further reduces operating impact and minimizes resonance‑related loss on mobile plants.

The DSA1860T banana screen is equipped with ALLIS SAGA’s innovative modular heavy-duty AE300 vibrator (comparable to the MV3 vibrator). It delivers stable excitation force and ensures long-term reliable equipment operation under high-hardness and high-load conditions.

### 03 Seamless Replacement for Original Units • Field‑Proven Performance

This is not ALLIS SAGA’s first seamless replacement of an international‑brand equipment. Back in 2023, the ALLIS SAGA MJC1107 jaw crusher successfully replaced a damaged C106 jaw crusher on an LT106 mobile jaw crushing plant.

The unit offers high compatibility with original equipment specifications of leading international brands in terms of equipment dimensions, parameters, mounting interfaces, operating conditions and performance standards. It enables customers to rapidly complete old unit removal and in-situ installation of the new crusher without modifying the original frame, transmission, and electrical control systems. This significantly shortens downtime and minimizes production losses.

To date, this mobile plant has been operating stably at the Ural mining area in Russia for more than three years.

With years of industry experience, ALLIS SAGA fully benchmarks itself against the processes and technical standards of leading international brands, continuously enhancing equipment performance and adaptability. The company has accumulated extensive R&D and project expertise, and developed the capability to provide viable alternatives to premium international brand equipment.

Backed by a comprehensive product portfolio and mature, turnkey adaptation solutions, ALLIS SAGA effectively addresses pain points common with imported equipment, including high procurement costs, long lead times, and scarce spare parts.

True to its corporate vision of “Building a World-class Premium Brand, Serving Professional Customers Worldwide”, ALLIS SAGA is committed to providing global customers with stable, reliable, highly adaptable, and cost-effective crushing and screening solutions.