Case Study: Indonesian Cement Plant Modernizes Primary Feeding with SHINING WBZ1524×5615mm Apron Feeder

Executive Summary

SHINING WBZ1524×5615mm Heavy-duty Apron Feeder is an advanced bulk material handling solution for cement and mining. Powered by a 30 kW VFD motor and P2KA14 planetary reducer, it delivers 300–500 t/h capacity. Key features include T171 tank track chain (855 kN tensile strength), Mn13Cr cast slats (3–5× wear life), and self-lubricating rollers for zero-maintenance operation. Engineered to replace the Svedala NICO FD4486, it increases horsepower, simplifies the drive system, and lowers investment costs. The unit has been delivered and is currently en route to the client's facility for installation and commissioning.

1. Client Background

The client is a major cement production facility in Indonesia. For primary crusher feeding and intermediate bin discharge, the plant has historically operated a Svedala NICO FD4486 Apron Feeder—a legacy machine from the Universal Engineering Division of Svedala Industries, Inc. Following the corporate integration of Svedala into Metso and Sandvik, the client faced increasing challenges in sourcing original OEM spare parts and specialized technical support. To sustain production growth and reduce long-term operational expenditure, the plant initiated a project to replace the FD4486 with a modern, high-efficiency alternative.

2. The Challenge

The Svedala NICO FD4486, while robust for its era, presented several operational constraints in a modern cement plant environment:

• Limited Drive Margin: The original 18.5 kW (25 HP) variable frequency motor, paired with an NICO RS-558 shaft-mounted reducer (ratio 8:1) and Falk couplings, offered minimal torque reserve for peak loads or capacity expansion.

• High Maintenance Complexity: The system required a dedicated Lincoln GL-1 lubrication skid for head and tail shaft bearings, necessitating regular manual intervention and spare parts inventory.

• Component Sourcing Risk: With the original manufacturer discontinued, procuring OEM chains, slats, and couplings had become increasingly difficult and costly.

• Wear Component Longevity: Original welded slats and standard engineering chains required frequent inspection and replacement under high-abrasion conditions (limestone, clay, iron ore).

3. The Solution

SHINING ENGINEERING designed the WBZ1524×5615mm Heavy-Duty Apron Feeder as a direct technical replacement. The redesign focused on three core engineering principles: increased power density, system simplification, and maintenance-free operation.

3.1 Upgraded Drive System: 30 kW VFD & Planetary Reduction

The motor power is increased from 18.5 kW to a YVF200-4 30 kW variable frequency motor (1450 r/min, 380V/50Hz)—a 62% increase in power capacity. This provides the necessary torque margin to handle peak loads without skidding or jamming.

The drive architecture is fundamentally simplified. The traditional shaft-mounted reducer and external Falk couplings are replaced by a P2KA14 planetary gear reducer with a total reduction ratio of 280. This unit connects directly to the drive shaft via a locking disc (shaft-mounted locking assembly). This direct-drive configuration eliminates intermediate elastic pin couplings and separate coupling guards, reducing rotating components and potential failure points. The planetary reducer's torque arm mounting ensures stable operation under severe impact loads from bin discharge.

3.2 Maintenance-Free Roller Technology

The WBZ1524×5615mm implements double-row self-lubricating rolling bearing assemblies for both support (carrier) rollers and return rollers. Unlike the FD4486, which requires weekly manual greasing, these rollers operate without routine oil or grease replenishment. This design reduces scheduled maintenance labor, eliminates the risk of over- or under-lubrication, and minimizes personnel exposure to moving parts.

3.3 Advanced Wear-Resistant Materials

• Mn13Cr Cast Slats: Precision-cast high-manganese steel slats (20 mm base thickness, reinforced ribs) replace standard welded pans. Compared to Q235 or ordinary steel, Mn13Cr delivers 3 to 5 times longer service life under high-impact, abrasive conditions. Overlapping sections use seamless curved transition plates to eliminate material leakage.

• T171 Tank Track Chain: With an ultimate tensile strength of 855 kN, this heavy-duty crawler chain features 35MnB plates (quenched and tempered) and 40Cr pins/bushings (high-frequency quenched to HRC 52–56). Advanced sealing retains internal lubrication, minimizing maintenance in harsh environments.

3.4 High-Performance Lubrication

All primary transmission components—drive sprockets, driven sprockets, carrier rollers, and main bearings—are lubricated with molybdenum disulfide grease. This specialized formulation forms a stable, high-load-bearing film under extreme pressure and high-temperature conditions, reducing friction and preventing seizing.

4. Technical Comparison

5. Design-Validated Performance Targets

The following outcomes are projected based on SHINING's engineering simulations and factory acceptance testing (FAT). Full operational data will be documented following on-site commissioning:

• Performance: Increased horsepower and planetary direct-drive eliminate power insufficiency, ensuring stable feeding at 300–500 t/h under full load.

• Investment Cost Reduction: System simplification (fewer components, no external couplings, compact reducer) lowers capital expenditure and on-site installation time.

• Lower Total Cost of Ownership: Maintenance-free rollers and extended-wear Mn13Cr slats are engineered to significantly reduce spare parts consumption and labor costs over the equipment lifecycle.

• Operational Reliability: The simplified mechanical system and SHINING's global support network are designed to ensure long-term operational security for the Indonesian cement plant.

6. Conclusion

The SHINING WBZ1524×5615mm Heavy-Duty Apron Feeder represents a technically advanced, modern alternative to legacy Svedala equipment. By integrating a high-power VFD, planetary reduction, and maintenance-free roller technology, this solution is engineered to deliver reliable, long-term performance in demanding bulk material handling applications. With the unit en route to the Indonesian cement plant for installation and commissioning, SHINING looks forward to publishing verified operational results upon successful start-up.

For technical specifications, custom engineering consultations, or to discuss your replacement project, contact: sales1@shiningco.com