Vertical Bore VB120SF
The Winona Van Norman VB Series Vertical Boring Machines are industrial-grade boring mills engineered specifically for automotive, diesel, and performance engine rebuilding. Designed with a stationary boring head and movable worktable, the VB Series delivers exceptional rigidity and machining accuracy, providing more precise and repeatable results than conventional boring bar systems. Built for high-performance machining, these machines combine rugged construction with operator-focused features that maximize productivity while maintaining tight tolerances.
The stationary boring head design minimizes deflection during machining, while the universal fixturing system and fully adjustable table allow quick, accurate setup of engine blocks—even when they are not mounted perfectly square. Side-to-side and fore-and-aft table travel, combined with an integrated dial indicator, enable operators to rapidly center each cylinder for precise boring with minimal setup time.
To optimize machining performance, the VB Series features adjustable spindle speeds and feed rates, allowing operators to fine-tune cutting conditions for a wide range of materials and bore sizes. This flexibility is especially valuable for large overbores, where aggressive roughing cuts can significantly reduce finishing time while maintaining excellent surface quality. A micrometric manual feed provides precise depth control for counterboring cylinder sleeves, while adjustable automatic boring stops improve consistency and free operators to perform other tasks during machining. Select models also feature rapid boring head retraction for increased productivity.
Built for accuracy, durability, and efficiency, the Winona Van Norman VB Series Vertical Boring Machines provide professional machine shops with the precision and reliability needed to produce high-quality engine rebuilds day after day.
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Product Information
Operations
Auto, diesel, or motorcycle, the VB Series Machines will bore and mill rapidly and accurately!
Specifications
Features
1 PH electrical system
CBN milling head ( Only 13.5″)
Pair of parallel supports (5.31″ x 16.53″)
30″ chamfering tool for cast iron
Edge clamp set (4 piece)
Tools measuring device
Service tools
Operating manual
CNC controls
Automatic centering & measuring
Tool changer
Standard Tooling
Features and Options
Boring Range:
Milling Head Diameter:
Max. Vertical Travel (Head):
Distance from Spindle to Column:
Spindle Rotation Speed:
Spindle Feeds:
Table Surface Feeds:
Table Surface Dimensions:
Max. Longitudinal Travel of table:
Max. Traverse Travel of table:
Main Motor Power:
Overall Dimensions:
Approx. Machine Weight:
Approx. Shipping Weight:
Controls:
2.04″ – 7″
12″
23″
13.2″
Variable 0.21 – 625 RPM
Variable 0 – 4.75 IPM
Variable 0 – 21.5 IPM
13.5″ x 33.9″
32″
2.1″
2 HP
54″ l x 46″ w x 75″ h
2,700 lbs.
3,100 lbs.
Manual