• Welcome to engineeringclicks.com
  • aligners or bushings for a reciprocating rod?

    Discussion in 'The main mechanical design forum' started by SWDADA, Oct 16, 2011.

    1. SWDADA

      SWDADA New Member

      Joined:
      Oct 2011
      Posts:
      2
      Likes Received:
      0
      my design needs aligners that can retain a reciprocating rod in a linear path. The is thrust forward by an impact from a rotating cam and returned by a pair of springs. Where can i find suitable aligners, particularly those in the form of car shock absorbers but without having the stiffness of a car shock absorber?
      suggest manufacturers or suppliers of such.
      the rod is about 5 kg mass, 40 cm in length and 6 cm diameter
       
    2.  
    3. kevin.koehler

      kevin.koehler Member

      Joined:
      Aug 2011
      Posts:
      19
      Likes Received:
      0
      Hi,

      I'm still a bit fuzzy about what you're trying to accomplish. Can you upload a quick sketch? Here are some options to consider:

      Linear Guide blocks
      http://www.mcmaster.com/#linear-motion-guide-rails

      Rigidly mounted block with guide bushing
      http://www.mcmaster.com/#bearing-drill-bushings

      Rod with a recirculating ball bushings
      http://www.mcmaster.com/#about-linear-m ... l-bushings

      Pneumatic air cylinder (some are equipped with spring return)
      http://www.mcmaster.com/WebParts/Conten ... idth=1196#

      Do any of these help?
       
    4. Harshad

      Harshad Member

      Joined:
      Jun 2011
      Posts:
      22
      Likes Received:
      0
      Keep 30% length (of total displacement length due to reciprocating motion) in bush with adequate clearance between Bush inner diameter an rod outer diameter.
       
    5. cosmos2c

      cosmos2c New Member

      Joined:
      Oct 2009
      Posts:
      1
      Likes Received:
      0
      SKF or there are a number of other companies that supply linear bearing: PTFE Guide Bushes do a goole search and you'll find plenty.
       

    Share This Page