Horizontal Milling Attachment R8 with Support (55° dovetail) & Arbor

Horizontal Milling Attachment R8 w/ Support (55° dovetail) & Arbor. Horizontal Milling Attachment with Arbor – R8. Fits Bridgeport-style milling machines with a 3 3/8 (8586mm) quill diameter and R8 spindle taper. Converts a vertical mill into a horizontal mill. Note: Maximum allowed speed with right angle attachment is 2000 rpm. Spindle runout is ± 20 micron (0.78 thou). The dovetail angle on milling arbor support is 55°. (Note: 50° is more common than 55°, we have both available). 7/16-20 bolt with 1/2 hex head. If you have any questions regarding this item, please let us know we’ll be happy to help. If You have any questions regarding this item, please let us know we’ll be happy to help.