Hones Boost Part Capacity, Stroker Torque
Sunnen Products’ all-electric HTA hones are designed to increase part capacity and stroker torque in applications such as bore resurfacing of hydraulic actuators, extruder barrels and die casting shot tubes, and manufacture of gas flow meter tubes.

Ultra-Sensitive Honing Is Right on Target
The Sunnen HTC-series tube honing system can impart accuracy-enhancing bore geometry and size (±0.00005 inch end-to-end) with a finish of 3 to 8 microinches Ra. This technology is critical for honing small-caliber barrels efficiently and precisely.

Automated System Delivers CNC Honing Control
Sunnen's SV-410 automated CNC honing system is designed to help performance builders and production rebuilders achieve precise cylinder geometry, surface finish and crosshatch parameters, for increased ring seal, uniform lubrication, decreased leak down and high horsepower.

Honing System Offers Increased Part Capacity, Stroker Torque
Sunnen’s all-electric HTA hone is designed to increase part capacity and stroker torque in applications such as bore resurfacing of hydraulic cylinders, extruder barrels and die casting shot tubes, manufacture of gas flow meter tubes, and repair of actuators for construction, mining, farming and forestry equipment.  

Move to Single-Pass Honing Cuts Stator Scrap
This automotive Tier 1 supplier reduced scrap on its variable valve timing (VVT) stator bores by replacing roller burnishing operations with a Sunnen VSS-2 single-stroke honing machine.

Multi-Feed Honing Technology Optimizes Cycle Time, Part Finish
Sunnen says its multi-feed honing technology gives users a choice of tool-feed modes to achieve the shortest cycle times, lowest part cost and longest abrasive life.

Air-Gage-Equipped, Vertical CNC Honing System
The SV-1005 series vertical CNC honing system with integrated air gaging system provides closed-loop control of tool size and downloadable SPC data.

“Green” Honing Oil Added To Government Catalog
The U.S.

Machining for Air Quality
Honing experts describe the significance of this machining process for meeting the most recent emissions standards affecting cars, trucks and other vehicles.

Sustainable Honing Oil Offers Extended Service
SHO-500 is a general-purpose honing fluid based on a renewable vegetable formulation that makes sustainable metalworking affordable and practical, the company says.

All-Electric Honing System for Hydraulic Actuators
The HTA Series actuator hone features an all-electric design that is said to eliminate noise, leaks, valve adjustments and performance variability.

Tube Hone Line for Long-Part Applications
Sunnen’s HTD tube hone features a 52-ft. (16-m) stroke and can accommodate parts ranging to 39" (1,000 mm) in diameter.

Automated Honing Reduces Cycle Time by 75 Percent
Faced with increased demand for a critical aerospace part, this manufacturer sought to replace its manual honing machines with a CNC model. As a result, the company achieved a 300-percent increase in production, better ID surface finishes and dimensional tolerances, and the ability to produce a wider range of part sizes.

All-Electric Honing System for Hydraulic Actuators
The all-electric HTA actuator hone is suited for hydraulic service facilities that resurface and repair actuators for construction, mining, farming and forestry equipment.

Honing in on Low Cost, High Accuracy and Short Cycle Times in the Manufacture of Orifice Meter Tubes
A low-cost automated honing system uses existing tools and protects workers.

Honing Machine Lends Itself To Unattended Operation
Sunnen’s SV-1000 series vertical CNC honing machine is designed for manufacturers of outdoor power equipment striving to improve the durability and power output of small two-stroke engines. Using TC superabrasive tools—custom designed for blind, ported cylinder bores—the manual or auto-loaded honing machine produces cylinders with micron-accurate size, geometry and exact surface finish to enhance combustion efficiency, engine durability and power output.

Thriving By Honing The Hard Stuff
Advanced machines, a healthy tooling supply and years of experience allow a Texas shop to take on honing jobs that others simply can’t do. A good portion of that complex work is tubes for offshore oil rigs. These components require bores that must maintain straightness and accuracy over lengths approaching 50 feet.

Scalable Modular Honing Machine
The SV-1000 series vertical CNC honing machine is engineered to scale up from a single-spindle machine to a fully automated multi-spindle unit for ultra-precise bore sizing and finishing. Designed for part diameters ranging from 0. 120" to 2.

Vertical CNC Honing System For Low- To Mid-Volume Machining
The SV-560 vertical CNC honing system from Sunnen combines a 60" (1,524-mm) stroke and 20-hp (15-kW) spindle for bores with diameters of 12" (300 mm) or larger, depending on the application. Capable of using legacy tooling from the GH-210 and SV-3/SV-4 machines, it is suited for low- to mid-volume machining of oil and gas industry components such as gas compressors, liner hangers, telemetry units, valves, pump liners and similar parts. Designed to provide high accuracy and quality surface finish, the honing system uses three-axis servo control of spindle rotation, stroke and tool feed to produce a whole-bore, constant crosshatch angle.

New Honing Options For Hypereutectic Aluminum Cylinder Bores
Hypereutectic aluminum is saturated with silicon particles that must be exposed during honing. A two-stage process first hones a cylinder’s wall to a mirror-like finish and then relieves aluminum around the silicon particles.

How to Hone an Atypical Aluminum Alloy
Hypereutectic aluminum used for engine blocks contains silicon particles that must be exposed during cylinder honing. This can be done using a cushioning, elastomer honing tool that allows individual abrasive particles to “bounce” over the silicon particles. 

Bore Gages Provide Visually-Intuitive Control

Modular Design Adapts Automation For Honing

Precision Hole Making At High Cpk
Many shops and plants are moving from manual honing machines to CNC honing machines, as well as to robotically automated cells capable of controlling holes size to accuracies of 0.25µm (0.00001 inch). The inherent accuracy and process stability of honing have promoted this changeover because precision parts produced today must meet high Cpk requirements.Honing can produce a specified finish and a desirable crosshatch pattern on the bore surface, which helps retain a lubricating film for sliding components. Makers of outdoor power equipment, motorcycles, ATVs, hydraulics, pneumatics, gears, and valves are some of the users who have "discovered" automated honing in their drive to make parts with tolerances as tight as ±0.0002 inch (±5 µm) at high Cpk levels.

Why We Use Honing
 A gear manufacturer describes the advantages it realizes by sizing and finishing bores through automated honing.

High Speed Honing Machine

Drilling And Beyond
This collection of hole making-technologies offers some new, unusual and overlooked ways to make holes in machined parts. One of these tools might be the solution you're looking for. All of them will help you rethink your approach to hole making.

Accuracy In Bore Sizing And Finishing

Honing Tools For High Production

When You Need Really Accurate Bores
When bore specifications move beyond the capability of more traditional cutting operations, shops look to honing as the next step in the finish and accuracy continuum. Here you'll find a process that, in some applications, produces better results than honing can.