How Does the CPF Coarse Trough Feeder Optimize Primary Crushing Circuits?
The Cruston CPF coarse trough feeder is a purpose-built vibrating feeder for primary crushing stations. It comes in four models: CPF525 (1.3 × 2.5 m, 11 kW, MV1 exciter, 500 tph, 900 mm max feed), CPF561 (1.3 × 6.1 m, 22 kW, MV2, 600 tph, 900 mm), CPF635 (1.6 × 3.5 m, 15 kW, MV2, 750 tph, 1,000 mm), and CPF661 (1.6 × 6.1 m, 30 kW, MV3, 1,000 tph, 1,200 mm). Each model uses a flange-mounted modular vibrator with an eccentric counterweight to produce linear motion, ensuring a steady material flow even with large, irregular post-blast rock. The feeder is compatible with VG series prescreens (VG527-2V, VG540-3V, VG635-3V, VG645-3V) and can be configured for stationary, portable, or mobile plants, including underground operations.
In aggregate, mining, and recycling industries, the CPF feeder solves the problem of handling abrasive rocks, soft rocks, gravel, slag, recycled materials, and industrial materials. Its robust trough design absorbs impact from large lumps, while the linear vibration mechanism prevents material bridging and ensures a continuous feed to the primary crusher. For quarry and gravel pit operators, the CPF525 and CPF561 models offer compact footprints for moderate capacities, while the CPF635 and CPF661 handle higher throughputs up to 1,000 tph. The modular exciter allows quick replacement of the vibrator unit, reducing maintenance downtime from days to hours. Additionally, the feeder can be paired with bar screens to remove fines or impurities before crushing, improving crusher efficiency and reducing wear.
Compared to other feeders in the Cruston lineup, the CPF series distinguishes itself through its modular MV exciter system and trade-in program. The MV1, MV2, and MV3 exciters are designed for different duty levels, with the MV3 supporting the largest CPF661 model at 30 kW. This modularity means that a single exciter type can be swapped across compatible models, simplifying spare parts inventory. The CPF feeder also offers seamless compatibility with CJ series jaw crushers and CNP series impact crushers, as well as third-party crushing equipment. For operations that require custom configurations, Cruston can tailor the feeder's width, length, and discharge chute to match specific plant layouts. The result is a feeding solution that maximizes uptime, minimizes maintenance, and delivers reliable performance in the most demanding primary crushing applications.
- Modular MV exciter with eccentric counterweight generates strong linear vibration for efficient feeding of large materials up to 1,200 mm.
- Four standard models cover capacities from 500 to 1,000 tph and power ratings from 11 to 30 kW, with customizable options for specific site needs.
- Compatible with CJ jaw crushers, CNP impact crushers, and bar screens, and can be integrated into stationary, portable, or mobile plants.
