Checking The Chain Elongation Bs 2/C-100, -250, Bs 2/R-300, -700, Bs 4/R-300, -700 - Bosch Rexroth BS 2/C Series Assembly Instructions Manual

You can check the
elongation of the chain
through the slot (A) in
the housing element. The
lever of the chain tensioner
moves down as the chain
length increases, from
top (new/short chain)
to bottom (elongated
chain). The chain must be
shortened once the lever in
the slot is no longer visible.
As an alternative, mount a
proximity switch (E, ø8 mm,
max. length incl. the turn
radius of the cable: 45 mm)
in the fastening clip.
Switch distance:
1.5 + 0.5 mm
The tab (C) activates the
proximity switch when
the max. admissible chain
elongation is reached.
Note:
• Always observe the switch
distance, otherwise the
proximity switch will be
mechanically destroyed.
• Lead the cable through
the break in the housing
element to the control
unit.
7.6.8 Checking the chain elongation
BS 2/C-100, -250, BS 2/R-300, -700, BS 4/R-300, -700
A
B
Fig. 11: Checking the chain elongation, "small" drive head
C
D
E
3 842 358 724/2013-04, MIT: BS 2/C-... + BS 2/R-..., Bosch Rexroth AG
Assembly 27/76
+0,5
1,5
547 601-07