T.J. Davies Co., Inc. (Mantua, OH) can make custom retention knobs, pull bolts and other workholding components and accessories to fit older, or obsolete machinery. All dimensions of knobs can be customized, including length, diameter, thickness of collars, dimensions between collar and knob end, thread size and more. Additionally:
- Customers can specify a coolant hole, taper style, and whether O-rings are required.
- Custom made retention knobs are sized to fit the machine tool and spindle or toolholder to maximize the toolholders performance and cutting tool life and extend the life of existing machine tool assets.
- A fill-in-the-blanks form is provided to simplify the process; typical lead time for custom retention knobs is 3-4 weeks.
All TJ Davies custom retention knobs are manufactured from American-made 8620 alloy steel which has a high tensile strength to withstand strong centrifugal force, high load force, high feed rate, and difficult to machine material. All knobs are machined in-house with single point threading to Imperial (Class 2A UNC) or Metric (Class G6) standards.