Vertical Bore VB420SF

The VB Series machines are industrial-quality boring mills designed specifically for automotive use. Their advanced design and rigid construction deliver superior accuracy over conventional boring bars. The extensive operator-convenience features greatly speed the boring process.

All VB Series machines have stationary boring heads with movable tables. Because the boring heads do not move, they are very sturdy and provide exceptional machining accuracy.

Set-up times are minimal because of the excellent universal holding fixtures and the highly functional design of the tables. They can be moved side-to-side and fore-and-aft to center each cylinder quickly even if the block is not mounted square on the table. A dial indicator integral to the boring head shows when each cylinder is centered perfectly for boring.

To extend tool life and permit close control of the surface finish, boring RPM and feed rate are adjustable through a wide range. This makes the VB Series machines very good for large overbores which require two passes. The first cut can be made very deep and fast to minimize the need for the second cut.

The micrometric manual feed allows accurate depth control for counterboring cylinder sleeves. All VB Series machines have adjustable automatic boring stops which free the operator to perform other tasks. The VB160SF has automatic retraction of the boring head while the VB420SF and VB500A have operator activated rapid retraction.

 

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Product Information

The VB 420SF has infinitely variable spindle rotation, table traverse and boring feed. An added exclusive WVN feature is electronic DUAL AXIS VARIABLE SPEED movement of the table. This allows the operator to position the work piece with joystick controls on the control panel, dramatically reducing the effort required to center the spindle in cylinders for boring operation setup.

Controls: Manual

Dimensions

Machine width : 126″ (3200 mm)

Machine depth : 63″ (1600 mm)

Machine height : 119″ (3022 mm)

Machine weight : 9 830 lbs (4460 Kg)

 

 

The boring capacity range is 1.18″ to 14.” Maximum vertical travel of the power head is 36.3.” Standard equipment includes a 16″ CBN Milling Head, 22″ column to centerline distance at bottom of column and 74.8″ of table travel give ample capacity for 3412 and 3508
Cat block.

Technical Specifications

Boring Range
1.18" - 15.74"
30 - 400 mm
Maximum Boring Height
38.18"
970 mm
Maximum Milling Width
15.74"
400 mm
Maximum Milling Length
68.89"
1750 mm
Max Vertical Travel of Head
38.18"
970 mm
Distance from Spindle to Center Column
16.53"
420 mm
Table Size
78.74" x 25.59"
2000 x 650 mm
Max Side to Side Travel of Table
76.77"
1950 mm
Max Front to Back Travel of Table
6.88"
175 mm
Maximum Distance Between Head & Table
60.23"
1530 mm
Spindle Rotation
60-600 RPM
Column Up & Down Movement (Fine Feed)
0-4" per min
Table Side to Side Movement
0-8" per min
Required Working Width
203"

Demonstration