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Breaker size

Discussion in 'Compact Equipment Attachments' started by ror76a, Sep 11, 2010.

  1. ror76a

    ror76a Well-Known Member

    Joined:
    Jul 19, 2007
    Messages:
    211
    Location:
    Michigan
    I recently aquired a hyd breaker for a 35 (3.5 tn) size excavator, however I don't have a machine that size, my options are a Deere 15 (too small) and a Volvo ECR88 (too big?). My question is would I damage the breaker by using it on the larger (88) machine? Or should I just leave it in the shed untill I get a proper sized machine for it?
     
  2. willie59

    willie59 Super Moderator

    Joined:
    Dec 21, 2008
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    Occupation:
    Service Manager
    Location:
    Knoxville TN
    A hyd breaker should be properly matched to the machine that will operate it. The most important thing is the hyd flow going through hammer. Excessive oil flow (too big of a machine/pumps) can do bad things to some brands.
     
  3. Hendrik

    Hendrik Senior Member

    Joined:
    Mar 6, 2009
    Messages:
    1,232
    Location:
    Adelaide South Australia
    You do have some leeway with breaker size versus carrier size.
    The 1.5 tonne machine should handle a breaker up to 250kg but may well be awkward to use, whereas putting it on the 88 may be a waste of productivity.
    Far as flow rates go, you should be able to find out the specs to see if you can use the breaker on the 88, if you just want to use it for the odd job.
    Make sure if you store it, that it is stored in the upright position.
     
  4. Harry Dart

    Harry Dart Member

    Joined:
    Oct 8, 2010
    Messages:
    22
    Location:
    New Zealand
    The Volvo will pump around 90L/m (24 gpm)on the auxiliary circuit, your breaker probably wants only 30-40l/m (8-10gpm) if it's sized for a 3.5T machine. You could slow the flow down on the Volvo, but it's like driving a 1" nail with a sledgehammer. you bend the nail:).

    Find the specs on the breaker, (Max-min flow etc), but I agree with ATCOEQUIP, carrier and breaker need to be matched.
     
  5. scrappydoo

    scrappydoo New Member

    Joined:
    Apr 3, 2011
    Messages:
    4
    Location:
    Melbourne, Australia
    Hi, I want to fit a breaker to my 1999 Kobelco sk40sr. It doesn't have the auxiliary lines fitted so I will need to do this. The owners manual shows the option but I can't find the necessary foot valve and the local importer is no help. I'm in Melbourne, Australia. Any help on how to install the auxiliary circuit will be appreciated.
    Also I don't have enough posts to start this as a new thread.
    Thanks.
    Grant.
     
  6. Harry Dart

    Harry Dart Member

    Joined:
    Oct 8, 2010
    Messages:
    22
    Location:
    New Zealand
    Is the main valve under the cab floor, or vertically mounted on the RH side of the machine?.
     
  7. scrappydoo

    scrappydoo New Member

    Joined:
    Apr 3, 2011
    Messages:
    4
    Location:
    Melbourne, Australia
    from the owners manual it is under the floor.
    Thanks.