Reliable Gear Units for High Performance Vertical Conveyors
Bucket elevators serve to vertically transport large masses of bulk material to different heights without creating dust, then dump it. The height to be overcome is frequently more than 200 meters. The weights to be moved are enormous.
The carrying elements in bucket elevators are central or double chain strands, link chains, or belts to which the buckets are attached. The drive is located at the upper station. The features specified for the drives destined for these applications are similar to those for steeply ascending belt conveyors.
Bucket elevators require a comparatively high input power. Flender gear units for bucket elevators must be soft-starting because of the high starting power, and this is achieved by means of fluid couplings in the drive train. Bevel helical gear units are normally used for this purpose as single or twin drives on a base frame or swing base.
As world market leader for bucket elevator drives, FLENDER has standardized the complete application-specific drive system, thus combining the advantages of proven and reliable components with fast availability. Flender gear units for bucket elevators are a crucial element of the drive train. They are characterized by maximum performance and operational reliability as well as optimal availability. Auxiliary drives (maintenance or load drives) and backstops are supplied as standard. The gear unit and the auxiliary drive are therefore perfectly matched.
Your benefits at a glance
Maximum power capacity
Maximum operational reliability
Modular design principle
Types: Bevel helical gear unit FLENDER
Sizes: 15 sizes from 04 to 18
No. of gear stages: 3
Power ratings: 10 to 1,850 kW (auxiliary drive power from 0.75 to 37 kW)
Transmission ratios: 25 – 71
Nominal torques: 6.7 to 240 kNm
Mounting positions: Horizontal
Lime and cement industry
Suitable for transporting hot material (up to 1000°C)
With a power requirement of up to 30 MW, tube mills belong to the largest driven machines. They crush minerals, ores, coal, or cement clinker by impact and friction until the material is pulverized. The tube mills, which can have a diameter of up to 15 m and a length of up to 20 m, are installed horizontally. With tube mills, a distinction is made between different drive variants. Flender gear units for tube mills particularly specializes in:
Single pinion drives
Load sharing girth gear units
For all three variants, FLENDER offers the entire drive system: Motor, gear unit, couplings, pinion, and girth gear, as well as auxiliary drive, safety devices, and diagnostic systems.