Rod Boring / Grinding RB800
The Winona Van Norman RB800 Rod Boring Machine is a precision-engineered solution for restoring connecting rods to exact factory specifications. Designed for professional engine rebuilding, the RB800 accurately corrects out-of-round, tapered, or misaligned big-end bores after cap replacement or machining, ensuring proper bearing fit, consistent oil clearance, and dependable engine performance.
Combining both boring and grinding capabilities in a single machine, the RB800 provides exceptional versatility for a wide range of rod reconditioning applications. Its rigid construction and smooth, controlled machining action deliver outstanding accuracy, repeatability, and superior surface finishes on automotive, high-performance, agricultural, industrial, and light-to-medium diesel connecting rods. By performing multiple machining operations on one platform, the RB800 helps reduce setup time, improve workflow efficiency, and increase overall shop productivity.
Built for years of reliable service, the Winona Van Norman RB800 delivers the precision, durability, and flexibility professional machine shops need to produce consistently high-quality connecting rods. Whether rebuilding stock engines or preparing components for demanding performance applications, the RB800 provides the accuracy and repeatability required for exceptional engine reliability.
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Product Information
Operations
Grinding movement is adjustable during operation with a low voltage electrical control system. Variable boring spindle speed with digital readouts (0 – 1200 RPM), variable horizontal speed, square support for horizontal movement, and micrometer for grinding wheel.
Specifications
Features
Electronic variable speed drive for boring and grinding
Set of no. 15 grinding wheels for steel and cast iron
Set of no. 8 tools
Set of no. 5 centering cones
Grinding wheel dresser
Expanding spindle for con-rods clamping
Boring spindle
Tool setting device
Centering device
Calibrating device
Coolant system
Service tools
Operating manual
Standard Tooling
Features and Options
Spindle to Table Diameter:
Min. – Max. Boring Diameter:
Min. – Max. Grinding Diameter:
Min. – Max. Center to Center Capacity:
Spindle Rotation Speed:
Grinding Wheel Revolutions:
Feed Rate:
Grinding Movement:
Max. Rod Carriage Travel:
Boring Motor:
Table Motor:
Rotation Motor:
Revolution Motor:
Overall Dimensions:
Machine Weight:
Shipping Weight:
Coolant Pump:
5.9″
0.6″ – 6.3″
1.18″ – 6.3″
3.15″ – 25.6″
0 – 1,200 RPM
80 – 160 RPM
0 – 6.5″ / minute
0.47 (12)
16.54″
2 HP
0.1 HP
1.4 HP
0.4 HP
65″ l x 37.4″ w x 77″ h
2,140 lbs.
2,425 lbs.
Electric