Spindle Liners Eliminate Noise, Damage and Poor Performance
Spindle liners can be used to fill the gap when barstock diameter is considerably smaller than a spindle.
Share
Spindle liners can be used to fill the gap when barstock diameter is considerably smaller than a spindle. If the spindle ID is too large, excessive whipping and vibration of the bar can occur, resulting in potential damage to the spindle, marring of the barstock itself and overall poorer performance.
Available in steel, urethane and composite materials, spindle liners reduce the spindle ID to between 0.030 inch and 0.060 inch larger than the diameter of the bar being machined. The closer fit keeps the barstock on center in the spindle and allows faster machining speeds and closer machine tolerances.
Featured Content
Trusty-Cook Inc. offers a line of urethane spindle liners that originated about 35 years ago. The product has evolved to offer shaped ID—hex shapes, squares and rectangular work and extruded off-center jobs. Although steel liners are available for square and hex shapes, the pins placed in intermittent locations on either side to hold the liner’s shape can sometimes create issues. However, the urethane lines have the shapes molded, so feeding is as smooth with irregular shapes as with round stock.
To read more about spindle liners, visit “Line Your Spindles, Line Your Pockets.”
If there are any metalworking technologies you would like to see covered in this column, please e-mail me your ideas.
RELATED CONTENT
-
Bar Puller Features Self-Adjustment
The EZ-Puller, from Accudyne Corp., addresses a series of bar puller concerns with its own approach to pulling barstock.
-
Choosing an Automatic Bar Feeder
The bar feeder is the most common form of automation for turning operations. Selecting the right one requires consideration of the applications for which it will be used.
-
What Machine Shops Should Know About Material Bar Straightness
Many operations require a high degree of bar straightness, especially when the material is to be presented to a machine by a bar feeder. For that sector of the market, the following is a brief review of the steps your bar supplier can take to ensure positive results.
