Rod Boring / Grinding RB800
The Winona Van Norman RB800 Rod Boring Machine is a versatile, precision-built solution designed to restore connecting rods to exact factory specifications. Engineered for accuracy and repeatability, the RB800 corrects out-of-round, tapered, or misaligned big-end bores after cap replacement or machining, ensuring proper bearing fit, consistent oil clearance, and long engine life.
Designed for both boring and grinding operations, the RB800 gives engine rebuilders the flexibility to handle a wide range of rod reconditioning tasks in a single machine. Its rigid construction and smooth, controlled cutting performance make it ideal for automotive, performance, and light-to-medium diesel applications. By combining boring and grinding capability, the RB800 streamlines workflow, improves finish quality, and delivers reliable results for high-precision rod rebuilding.
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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