Honing Machines

Over a Barrel

Surface finish is the one feature of a rifle barrel that cannot be controlled in hammer forging. Now, custom rifle barrel makers are learning a trick from the makers of hammer forged barrels on how to overcome surface imperfections.
Honing Machines: Articles

A Chip Off the Old Block

Dart produces about 16,000 cylinder heads per year.
Dart masters the "peaks and valleys" of custom engine block production with an advanced American-made Sunnen SV-20 flexible honing system that uses programmable control to replicate “best” engine parameters and produce expert results with minimal operator expertise.

Smart Honing Lifts Business for Aerospace Hydraulic Pumps

The work envelope of the honing machine shows air-bearing index table in foreground, robot to left, honing spindle and tool upper center, and air gage right. 
This second generation machining business is using a new technology that makes a 60 millionths tolerance look generous. No kidding.

Over a Barrel

The hydraulic shop of this Cat dealer salvages cylinders up to 21 ft long by re-surfacing them with an HTA tube hone, saving their customers 80 percent or more over cost of new barrel.

Perfect Holes in Hard Material – Made Easy

Capable of producing the 0.1μm Ra or better finishes required by Damen’s automotive and large cylinder customers, the SV-­‐560’s patented, synchronized servo axes eliminate the “flattening of the crosshatch angle common with other honing machines.
Exotic materials specialist Damen Carbide Tool Co. expands its holemaking capability and business base with honing capacity to 9 in diameter and a 60 in stroke length using hones from Sunnen.

Diamonds are a Block’s Best Friend for Honing

Engine remanufacturer Jasper Engines & Transmissions and engine builder White Performance & Machine are two shops with different needs that illustrate how new diamond honing abrasives technology from Sunnen simplifies the boring process, cuts cycle times as much as half, and improves dyno results.


Honing Machines: Industry News

GMTA Announces a New Hire and Plans for an Open House

GMTA named Maik Schminke the manager of controls engineering and programming and announced plans for an open house. 

Sunnen Honing System Offers Increased Part Capacity and Stroker Torque

Ideal for bore resurfacing, the Sunnen HTA hone is PLC controlled, handles parts up to 13.5 ft long, 21 in diameter and 8000 lbs.


Honing Machines: Products

Large-Part Honing Machine for Job Shops, Repair Facilities

The SV-20 honing system from Sunnen.
The SV-20 honing system from Sunnen Products is the first competitively priced large-part machine for job-shop part production with a true linear, vertical, servo-stroking system to produce precision bore geometries on compressors, oilfield components, automotive/truck blocks and similar parts.

Smarter Tool Feed Enhances Production Honing

This new tool feed technology from Sunnen servo-controls the force in the honing tool feed system to maintain the optimum cutting load on the honing abrasive throughout a cycle, irrespective of the incoming part's hardness, geometry or size variation.