Bushing system for power transmission products

A system for securing a shaft within a hollow member, comprising:

• an outer sleeve comprising an outer surface configured to mount against an inner surface of a hollow member and first and second ends, wherein each of the first and second ends of the outer sleeve comprises a tapered inner surface, a generally cylindrical extension, and a concentric lip formed on the extension;
• first and second inner sleeves, each inner sleeve comprising a tapered outer surface configured to interface with the tapered inner surface of a respective one of the first and second ends of the outer sleeve, an inner surface configured to interface with a shaft, and a threaded extension;
• a first locking member comprising a threaded inner section configured to mate with the threaded extension of the first inner sleeve, and an eccentric aperture forming a varying depth inner groove configured to mate with the concentric lip of the first end of the outer sleeve;
• and
• a second locking member comprising a threaded inner section configured to mate with the threaded extension of the second inner sleeve, and an eccentric aperture forming a varying depth inner groove configured to mate with the concentric lip of the second end of the outer sleeve.

A system for assembly and disassembly of an outer member and shaft, the system comprising:

• a shaft;
• an outer member configured for mounting about the shaft;
• first and second outer sleeves, each outer sleeve having a tapered inner surface, a cylindrical extension, and an annular outer groove forming a lip on the extension;
• an inner sleeve configured for assembly between the shaft and the outer sleeves, the inner sleeve having an inner surface to interface with the shaft and first and second ends, each end comprising a tapered outer surface to interface with the tapered inner surface of the first or second outer sleeve and an externally threaded extension;
• a first nut having a threaded inner surface for interfacing with the threaded extension of the first end of the inner sleeve, and an eccentric aperture forming an inner groove of varying depth for interfacing with the lip of the first outer sleeve;
• and
• a second nut having a threaded inner surface for interfacing with the threaded extension of the second end of the inner sleeve, and an eccentric aperture forming an inner groove of varying depth for interfacing with the lip of the second outer sleeve.

A system for assembly and disassembly of an outer member and shaft, the system comprising:

• a shaft;
• an outer member configured for mounting about the shaft;
• an outer sleeve having first and second ends, each of the first and second ends having a tapered inner surface, a cylindrical extension, and an annular outer groove forming a lip on the extension;
• first and second inner sleeves configured for assembly between the shaft and the outer sleeve, each inner sleeve comprising a tapered outer surface to interface with the tapered inner surface of a respective one of the first and second ends of the outer sleeve, an inner surface to interface with the shaft, and an externally threaded extension;
• a first nut having a threaded inner surface for interfacing with the threaded extension of the first inner sleeve, and an eccentric aperture forming an inner groove of varying depth for interfacing with the lip of the first end of the outer sleeve;
• and
• a second nut having a threaded inner surface for interfacing with the threaded extension of the second inner sleeve, and an eccentric aperture forming an inner groove of varying depth for interfacing with the lip of the second end of the outer sleeve.

A method for assembling a hollow member and a shaft, the method comprising:

• assembling a first and second outer sleeve and an inner sleeve between the hollow member and the shaft, each outer sleeve having a tapered inner surface and a cylindrical extension presenting an annular outer groove forming a concentric lip, the inner sleeve having an inner surface to interface with the shaft and first and second ends, each of the first and second ends of the inner sleeve comprising a tapered outer surface to interface with the tapered inner surface of the respective first and second outer sleeve and an externally threaded extension;
• assembling a first locking member on the first end of the inner sleeve, the first locking member including an inner threaded section to interface with the threaded extension of the first end of the inner sleeve, and an eccentric aperture forming a varying depth groove for receiving the lip of the first outer sleeve;
• assembling a second locking member on the second end of the inner sleeve, the second locking member including an inner threaded section to interface with the threaded extension of the second end of the inner sleeve, and an eccentric aperture forming a varying depth groove for receiving the lip of the second outer sleeve;
• and
• tightening the first and second locking members on the first and second ends of the inner sleeve, respectively, to draw the first and second outer sleeves and the inner sleeve into engagement between the hollow member and the shaft.

A method for assembling a hollow member and a shaft, the method comprising:

• assembling an outer sleeve and a first and second inner sleeve between the hollow member and the shaft, the outer sleeve having first and second ends, each of the first and second ends comprising a tapered inner surface and a cylindrical extension presenting an annular outer groove forming a concentric lip, the first and second inner sleeves each comprising a tapered outer surface to interface with the tapered inner surface of the respective first and second ends of the outer sleeve, an inner surface to interface with the shaft, and an externally threaded extension;
• assembling a first locking member on the first inner sleeve, the first locking member including an inner threaded section to interface with the threaded extension of the first inner sleeve, and an eccentric aperture forming a varying depth groove for receiving the lip of the first end of the outer sleeve;
• assembling a second locking member on the second inner sleeve, the second locking member including an inner threaded section to interface with the threaded extension of the second inner sleeve, and an eccentric aperture forming a varying depth groove for receiving the lip of the second end of the outer sleeve;
• and
• tightening the first and second locking members on the first and second inner sleeves, respectively, to draw the outer sleeve and the first and second inner sleeves into engagement between the hollow member and the shaft.

A method for disassembling an outer member and a shaft, the method comprising:

• rotating a first locking member on a tapered first end of an inner sleeve positioned between a tapered first outer sleeve and a shaft, the first outer sleeve having a tapered inner surface and a cylindrical extension presenting an annular groove, the first end of the inner sleeve having a threaded extension and a tapered outer surface interfacing with the tapered inner surface of the first outer sleeve, the first locking member having a threaded inner section engaging the threaded outer surface of the first end of the inner sleeve, and an eccentric aperture forming a varying depth groove, a side wall of the varying depth groove contacting a side wall of the annular groove of the first outer sleeve to force relative displacement of the first outer sleeve and the first end of the inner sleeve;
• and
• rotating a second locking member on a tapered second end of an inner sleeve positioned between a tapered second outer sleeve and a shaft, the second outer sleeve having a tapered inner surface and a cylindrical extension presenting an annular groove, the second end of the inner sleeve having a threaded extension and a tapered outer surface interfacing with the tapered inner surface of the second outer sleeve, the second locking member having a threaded inner section engaging the threaded outer surface of the second end of the inner sleeve, and an eccentric aperture forming a varying depth groove, a side wall of the varying depth groove contacting a side wall of the annular groove of the second outer sleeve to force relative displacement of the second outer sleeve and second end of the inner sleeve.

A method for disassembling an outer member and a shaft, the method comprising:

• rotating a first locking member on a tapered first inner sleeve positioned between a tapered first end of an outer sleeve and a shaft, the first end of the outer sleeve having a tapered inner surface and a cylindrical extension presenting an annular groove, the first inner sleeve having a threaded extension and a tapered outer surface interfacing with the tapered inner surface of the first end of the outer sleeve, the first locking member having a threaded inner section engaging the threaded outer surface of the first inner sleeve, and an eccentric aperture forming a varying depth groove, a side wall of the varying depth groove contacting a side wall of the annular groove of the first end of the outer sleeve to force relative displacement of the first end of the outer sleeve and the first inner sleeve;
• and
• rotating a second locking member on a tapered second inner sleeve positioned been a tapered second end of an outer sleeve and a shaft, the second end of the outer sleeve having a tapered inner surface and a cylindrical extension presenting an annular groove, the second inner sleeve having a threaded extension and a tapered outer surface interfacing with the tapered inner surface of the second end of the outer sleeve, the second locking member having a threaded inner section engaging the threaded outer surface of the second inner sleeve, and an eccentric aperture forming a varying depth groove, a side wall of the varying depth groove contacting a side wall of the annular groove of the second end of the outer sleeve to force relative displacement of the second end of the outer sleeve and the second inner sleeve.