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Rod & Pin Hone RPH

Angle view of the Winona Van Norman Rod & Pin Hone showcasing the precision honing head, work area, and heavy-duty machine construction.

The Winona Van Norman RPH Rod & Pin Hone is engineered to deliver exceptional honing accuracy, consistent surface finishes, and dependable long-term performance for professional engine rebuilding operations. Designed for precision honing of connecting rods, piston pin bores, and a wide variety of other components that fit within its working capacity, the RPH produces accurate, repeatable results that improve component fit, alignment, and overall engine performance.

Built for years of reliable service, the RPH features heavy-duty mandrels, a durable spindle, robust clutch assembly, dependable coolant system, and a rugged stone expansion mechanism—all designed to withstand demanding production environments. Its sturdy construction and service-friendly design provide easy access for coolant changes and routine maintenance, minimizing downtime and maximizing productivity.

Ideal for production engine rebuilders, high-volume machine shops, and precision machining operations, the RPH combines durability, accuracy, and ease of operation into a machine that consistently delivers high-quality honing results. Whether rebuilding standard engines or machining performance components, the RPH is the dependable solution for efficient production and long-lasting reliability.

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Dimensions

Electrical

Production

Contact Info

Product Information

Sizes from 7.44″ – 5.5″ to handle rod reconditioning, piston-pin fitting and small-cylinder honing

Heavy-duty assembly designed for many years of precision operation with no maintenance

More reliable than spring systems. Adjusts from 0 – 80 PSI for rapid cutting or a fine surface finish

A trouble-free mechanism gives fast, positive mandrel start-up. no adjustments are ever needed

No tools required. Slide the entire tank out of the machine easily for cleaning and to change the fluid

Honing Oil (5 Gallons)

Features and Options

Honing Size Range:
Honing Speed:
Honing Pressure:
Motor Power:
Electrical:
Air Requirement:
Coolant Capacity:
Coolant Motor:
Dimensions:
Approx. Shipping Weight:

0.744″ – 5.5″
Variable 200 – 600 RPM
Variable 0 – 80 PSI
1.5 HP
230V/3PH/60HZ or 120V/3PH/60HZ
60 PSI
10 Gallons
0.125 HP
31″ l x 45″ d x 53″ h
640 lbs.

Demonstration