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Rod Boring RB700

Angle view of the Winona Van Norman Rod Boring Machine showcasing the precision boring head, workholding system, and heavy-duty machine construction.

The Winona Van Norman RB700 Rod Boring Machine is a precision-engineered solution designed to restore connecting rods to exact factory specifications. Built for professional engine rebuilding, the RB700 delivers exceptional accuracy, consistency, and durability while producing precise bore sizing, alignment, and roundness to ensure proper bearing fit, correct oil clearance, and dependable engine performance.

Featuring rigid construction and smooth, controlled cutting action, the RB700 accurately bores and finishes connecting rod big ends to meet demanding machining tolerances. Its precision machining capabilities help eliminate out-of-round or misaligned bores, reducing the risk of premature bearing wear while improving engine reliability and longevity. Ideal for automotive, performance, agricultural, industrial, and light-to-medium diesel applications, the RB700 provides consistent, repeatable results across a wide range of connecting rod sizes.

Designed to maximize productivity and machining quality, the Winona Van Norman RB700 delivers the precision, reliability, and ease of operation professional machine shops depend on. Whether rebuilding stock engines or preparing high-performance components, the RB700 helps reduce rework, improve workflow efficiency, and produce consistently accurate connecting rods for long-lasting engine performance.

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Dimensions

Electrical

Production

Contact Info

Product Information

24V electrical control system, square with manual adjustment and variable automatic transversal adjustment for holding connecting rod, for fast and accurate centering.

Wrist pin adjuster

Easy to use controls

Height lock

Distance adjuster

Centering tools

Dial

Large Expanding Arbor

Medium Expanding Arbor

Small Expanding Arbor

Set fo 8 Centering Cones

Centering Indicator Device

Boring Tool Setting Indicator

Wrist Pin Mounting Fixture

Indicator Zero Disk

Features and Options

Spindle and table Distance:
Min. Boring Diameter:
Max. Boring Diameter:
Min. Center Distance Diameter:
Max. Center Distance Diameter:
Spindle Rotation Speed:
Feed (Speed / Minute):
Max. Rod Carriage Travel:
Motor:
Machine Dimensions:
Machine Weight:

5.9″
0.787″
7.992″
3.15″
25.6″
0 – 1,500 RPM
0.47″ – 5.9″
12.6″
2 HP
55″ l x 27.5″ w x 77″ h
1,433 lbs.

Demonstration