Geneq > Materials testing > Crushers

Jaw crusher
Models BB 100, BB 200 and BB 300


Description
Robust design, simple handling and cleaning are the features of the BB 100, BB 200 and BB 300 models. For small amounts of sample the Jaw Crushers can be used batch-wise; for larger amounts they can be operated continuously. The crushed sample is collected in a removable collector. For larger amounts or continuous crushing operations, the sample collector can be replaced by customer-specific solutions (e.g. a belt conveyor). Stainless steel and plastic sample collectors are available for the BB 300. The grinding chamber is enclosed almost dust-tight. To remove any fine dust which could contaminate the surroundings, each crusher is equipped with a connection for dust extraction. A safety switch and the brake motor ensure an immediate stop if the unit is opened or switched on incorrectly. A Belleville spring washer integrated in the spindle adjustment provides additional overload protection. The eccentric spindle which moves the crushing arm is driven by a robust brake motor via V-belts. The largest belt pulley also acts as the flywheel to ensure uniform and smooth operation. BB 200 and BB 300 feature central lubrication of the lower movable crushing arm roller bearings.

Benefits at a glance
  • High throughput, high degree of size reduction
  • High final fineness (down to d90 <2 mm)
  • Continuous gap width setting
  • Scale for gap width display
  • Zero point adjustment for wear compensation
  • Central lubrication (BB 200, BB 300)
  • Breaking jaws made of 4 different materials
  • No-rebound feed hopper with quick-release clamp
  • Brake motor with safety switch
  • Easy-to-clean crushing chamber
  • Process line versions of BB 200 and BB 300 available
  • CE-conforming

Wear compensation by zero-point adjustment
Depending on the material and the throughput, sooner or later the breaking jaws will start to show signs of wear. This means that the set breaking jaw distance or the crushing gap will increase with time. In order to still be able to obtain reproducible crushing results this wear must be compensated. With Jaw Crushers whose gap width can only be set in fixed steps, compensation for wear is not possible. This means that reproducibility can no longer be assured. In comparison, Jaw Crushers can be continuously adjusted and therefore breaking jaw wear can be compensated. This is done by slowly altering the gap width setting with the motor running until the breaking jaws are heard to come into contact. The new zero point thus obtained is saved by pressing the reset key (BB 51) or readjusting the scale (BB 100 to BB 300).

Selection guide for Jaw Crushers
The choice of Jaw Crusher depends primarily on the feed material size and the amount to be crushed.
With its compact space-saving design, model BB 51 is often used in laboratories for pre-crushing small amounts of sample with a large feed size.
Series BB 100, BB 200 and BB 300 Jaw Crushers are mainly used for pre-crushing hard, brittle products with a degree of hardness >3 on the Mohs' scale.
BB 100 and BB 200 are particularly suitable for standard size reductions, e.g. of minerals, ores and fossil fuels.
Models BB 200 and BB 300 are also suitable for size reduction in process plant, e.g. when included in a sampling station.

Increased user convenience combined with maximum working safety
Safety is very important for Jaw Crushers. The interior of the feed hopper cannot be accessed by hands and the baffles prevent the sample material from rebounding. Integral Belleville spring washer packages and a thermal overload protection switch protect the Jaw Crushers against overloading. The hopper is hinged for easy cleaning (BB 100 to BB 300) or can be easily removed. The Jaw Crushers run very smoothly and quietly. Due to their solid design, Jaw Crushers are virtually maintenance-free.

The suitable material for your requirements
  • Selecting the breaking jaw material. Breaking jaws made from different materials are available for different applications:
  • Manganese steel
    is a material whose structure becomes compressed under pressure and becomes harder with time (cold hardening).
  • Stainless steel
    is recommended if the expected feed material is not too hard and could cause corrosion.
  • Tungsten carbide
    is the most abrasion-resistant and pure material. It provides an increased working life even with materials up to 7-8 on Mohs’ scale.
  • Zirconium oxide,
    partially yttrium-stabilized is used as a ceramic material for metal-free preparation, e.g. for dental or clinical ceramics, optical glasses. A further advantage is that no color changes as a result of abrasion are observed (only available for BB 51).
  • Heavy-metal-free steel
     is optimal for the sample preparation of materials which will be submitted for analysis on heavy metals and which are not too abrasive, such as construction waste, soil samples and road surfacing.
    Apart from giving guideline information about their analytical compositions, the table below provides an overview of which breaking jaw materials are available for which Jaw Crusher models.

Jaw Crushers order data
Jaw Crushers Item No.
Breaking jaws Version1 BB 51 BB 100 BB 200 BB 3002
Manganese steel 3/N~ 400 V, 50 Hz
230 V, 50 Hz 		-
20.056.0006		 20.052.0001
20.052.0003		 20.053.0001
20.053.0007		 20.054.1001
-
Stainless steel 3/N~ 400 V, 50 Hz
230 V, 50 Hz		 -
20.056.0002		 20.052.0004
20.052.0006		 20.053.0002
20.053.0008		 20.054.1003
-
Tungsten carbide 3/N~ 400 V, 50 Hz
230 V, 50 Hz		 -
20.056.0003		 20.052.0007
20.052.0009		 20.053.0003
20.053.0009		 20.054.1013
Zirconium oxide 230 V, 50 Hz 20.056.0004 - - -
For grinding without heavy-metal contamination
steel 1.1750 3/N~ 400 V, 50 Hz
230 V, 50 Hz		 -
20.056.0013		 20.052.0027
20.052.0028		 20.053.0018
20.053.0019		 20.054.1006
-
For grinding of semi-conductor materials (all parts coming into contact with the sample are heavy-metal-free)
Tungsten carbide 3~ 400 V, 50 Hz - - 20.059.0001 -
For integration into a system at the customer’s location, with manufacturer’s declaration according to EC machine directive, with three-phase motor (voltages on request) and central lubrication, without hopper and protective motor switch
Manganese steel on request - - 20.058.1001 20.057.1001
Stainless steel on request - - 20.058.1002 20.057.1002
Tungsten carbide on request - - 20.058.1003 -
1)other electrical versions available on request 2)please order receptacle separately 3)versions with wearing plates of tungsten carbide available
Spare breaking jaws and wearing plates Item No.
Spare breaking jaws, 1 pair BB 51 BB 100 BB 200 BB 300
Spare breaking jaws, manganese steel 22.048.0014 22.048.0001 22.048.0004 22.048.0007
Spare breaking jaws, stainless steel 22.048.0012 22.048.0002 22.048.0005 22.048.0008
Spare breaking jaws, tungsten carbide 22.048.0010 22.048.0003 22.048.0006 on request
Spare breaking jaws, zirconium oxide 22.048.0011 - - -
Spare breaking jaws, steel 1.1750 22.048.0016 22.048.0017 22.048.0018 22.048.0019
Spare wearing plates, 1 pair BB 51 BB 100 BB 200 BB 300
Spare wearing plates, stainless steel 22.711.0009 22.711.0002 22.711.0003 22.711.0004
Spare wearing plates, tungsten carbide 22.711.0008 22.711.0005 22.711.0010 on request
Spare wearing plates, zirconium oxide 22.711.0007 - - -
Spare wearing plates, steel St 1203 22.711.0011 22.711.0012 - 22.711.0013
Spare wearing plates, steel 1.0038 - - 22.711.0006 -