Line Boring LB30
The Winona Van Norman LB Series Line Boring Machines are engineered to provide unmatched precision, strength, and reliability for line boring engine blocks and other critical components. Designed for professional engine rebuilding, remanufacturing, and industrial machine shops, the LB Series restores main bearing bores to exact factory specifications, ensuring proper crankshaft alignment, bearing geometry, and long-lasting engine performance. Its rigid construction and precision engineering make it an ideal solution for automotive, diesel, marine, and heavy-duty engine applications where accuracy is essential.
At the core of the LB Series is an exceptionally heavy cast iron base that virtually eliminates deflection during machining, providing outstanding stability for consistently accurate results. Precision-machined surfaces and versatile universal fixturing securely locate workpieces, while the fully gear-driven boring bar rotation and feed system, powered by a robust 2 HP motor, delivers smooth, chatter-free cuts with greater durability than conventional belt-driven machines. Adjustable speed and feed rates allow operators to optimize performance for a wide variety of engine block materials and bore sizes, and conveniently positioned controls make it easy to monitor the machining process and make precise adjustments as needed.
Designed to maximize efficiency, the Winona Van Norman LB Series features an extended spindle travel that allows more bores to be completed before repositioning the tooling, reducing setup time and increasing overall productivity. Combining rugged construction, precision machining, and dependable long-term performance, the LB Series delivers the accuracy, repeatability, and reliability professional machine shops rely on to produce superior line boring results every day.
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Product Information
Operations
Boring bar rotation and feed are fully gear-driven. Combined with the 2 HP drive motor, this ensures rapid, chatter-free cuts and extended longevity compared to belt-drive systems. Speed and feed rates have a wide range of adjustments to match the characteristics of engine block material and the size of the bores. Because of the convenient controls, the operator can keep close watch on the boring process and can easily make speed adjustments if necessary.
Specifications
Larger sizes available upon request
Base castings are exceptionally heavy to eliminate any possibility of deflection, while the precision machined surfaces and excellent universal fixtures position work pieces securely during operation.
Features
A special feature of the LB Series machines is their unusually long spindle travel which allows blocks to be bored with fewer interruptions to reposition the tooling.
Standard Tooling
Standard Equipment
Part No. Item
810309 Bar, Block Alignment Device
810308 Bar Centering Set
810274 Parallel Set, 3.9″ Height
810273 Parallel Set, 5.7″ Height
810272 Parallel Set, 9″ Height
816288 Steadyrest
816974 Toe Clamp Set (4)
812169 Tool Bar Holder (2)
812232 Toolsetting Micrometer Assembly
816286 Toolsetting Micrometer Mounting Assembly
Features and Options
Max. Length of Block:
120″