17.12.1998
©
Retsch GmbH
7
Doc. No. GB 98.056.9999
Protective devices
The crusher chamber of the BB 51 is enclosed on all sides by a robust
steel plate casing.
The BB 51 can be safely started up even when the hopper lid is open
and the output receptacle withdrawn, as its design in compliance with
EN 294 precludes any inadvertent insertion of hands or objects.
A main switch fitted with a thermal overload relay on the back of the
machine protects against current overload.
Gap width adjustment
From 0 to approx. 10 mm by handwheel in 0.1 mm steps. Digital gap
width indicator.
Throughput, output fineness
The performance data, throughput and achievable final output fineness
are dependent on the breakage behaviour and hardness of the process
material and on the gap width set. They can only be determined em-
pirically.
Rated capacity of withdrawable receptacle
Approx. 1000 ml
Noise data :
Noise measurement to DIN 45635-031-01-KL3
The noise levels are also influenced by the properties of the input ma-
terial.
Example 1:
Sound power level L
WA
= 78,3 dB(A)
Workplace related emission level L
pAeq
= 68,7 dB(A)
Service conditions :
Input material: none
Crushing members : zirconia jaws
Gap width set: 2mm
Example 2:
Sound power level L
WA
= 91,7 dB(A)
Workplace related emission level L
pAeq
= 83,7 dB(A)
Service conditions :
Input material : quartz gravel of grain size approx. 25mm
Crushing members : zirconia jaws
Gap width set: : 2mm
Output grain size: < 5 mm
IP ratings
IP20
IP00 on the side ventilation slits
Rated power
1100 W
Dimensions
Height: approx. 510mm,
Width: approx. 360 mm,
Depth: approx. 580 mm
Weight: approx. 79 kg / net
Required mounting surface
(462 mm x 1000 mm; no safety clearances necessary!)
