Jaw Crushers

Retsch - BB 50 - BB 100 - BB 200 - BB 300

High throughput, high degree of size reduction
High final fineness (down to d90 <0.5 mm)
Zero point adjustment for wear compensation

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Description
Specifications

Retsch Jaw Crushers are used for the rapid, powerful crushing and pre-crushing of mediumhard, hard, brittle and tough materials.

The variety of materials offered, their efficiency and safety make them ideal for sample preparation in laboratories and industrial plants.

Applications & Details

Jaw crushers are always at the very front of the sample preparation chain, pre-crushing all hard and brittle materials. They are primarily used in laboratories and pilot plants under rough conditions but are also suitable for on-line quality control of raw materials. The jaw crushers are available in 8 different sizes: BB 50, BB 100, BB 200, BB 300 and the XL models BB 250 XL, BB 400 XL, BB 500 XL and BB 600 XL. Throughput and final fineness depend on the crusher type, selected gap width and breaking properties of the sample material.

Feed sizes range from 40 mm to 350 mm, depending on the model.

The main fields of application of jaw crushers are construction materials, mineralogy and metallurgy, ceramics and glass, materials research and environmental analysis.

RETSCH Jaw Crushers are characterized by many unique details allowing for convenient and safe sample processing.

Benefits at a glance

(depending on model)

High throughput, high degree of size reduction
High final fineness (down to d90 <0.5 mm)
Zero point adjustment for wear compensation
Breaking jaws made of different materials
No-rebound feed hopper
Easy-to-clean crushing chamber
Belleville spring washer provides overload protection

Jaw Crusher technology

RETSCH Jaw Crushers are robust and powerful forced-feed crushers. The feed material passes through the no-rebound hopper and enters the crushing chamber. Size reduction takes place in the wedge shaped area between the fixed crushing arm and one moved by an eccentric drive shaft. The elliptical motion crushes the sample which then falls under gravity.

As soon as the sample is smaller than the discharge gap width, it falls into a removable collector. The continuous gap width setting with scale resp. digital display ensure optimal size reduction in accordance with the set gap width value. Integral Belleville spring washer packages and a thermal overload protection switch protect the jaw crushers against overloading.

Model	BB 50	BB 100	BB 200	BB 300
Applications	coarse and pre-crushing
Fields of application	chemistry / plastics, construction materials, engineering / electronics, environment / recycling, geology / metallurgy, glass / ceramics
Feed material	medium-hard, hard, brittle, tough
Material feed size	< 40 mm	< 50 mm	< 90 mm	< 130 mm
Final fineness	d₉₀ < 500 µm	d₉₀ < 4 mm	d₉₀ < 2 mm	d₉₀ < 5 mm
Collector capacity	3 liter	2 liter	5 liter	27.5 Liter / 35.4 liter
Max. throughput	3 liter/batch	200 kg/h	300 kg/h	600 kg/h
Gap width setting	0 – 11 mm	0 – 20 mm	0 – 30 mm	1 – 40 mm
Speed (at 50 Hz)	550 – 950 min-1	275 min^-1	275 min^-1	253 min^-1
Gap width display	digital	analog	analog	analog
Zero point adjustment	•	•	•	•
Hinged hopper	•	•	•	•
Connection for dust extraction	dust-tight housing	•	•	•
Central lubrication	greased for life	–	–	•
Maintenance- and lubricant-free sliding bearings	–	–	•	–
Process line version available	–	–	optional	optional
Wearout warning notice	•	–	–	–
Drive power	1,100 W	750 W	1,500 W	3,000 W
W x H x D	420 x 460 x 560 mm	0 x 960 x 800 mm	450 x 1,160 x 900 mm	670 x 1450 x 1,600 mm
Net weight	approx. 79 kg	approx. 137 kg	approx. 300 kg	approx. 700 kg