Sunnen

Sunnen's honing machines cover a wide range of sizes, from small to large diameters, and various production scales, from high-mix processing to mass production lines. This page presents the strengths of Sunnen's products, its lineup, usage case examples, and its support structure.

The strengths of Sunnen's honing machines

Servo-Controlled Honing for Precision Cross-Hatch Finishing

The SV series features designs that use servo control to automatically adjust honing stone rotation speeds and reciprocal movement. These machines produce the uniform cross-hatching essential for lubrication on the interiors of holes. They support both short stroke and dwell processing.

How Sunnen's honing machines can transform your operations

Sunnen's honing machines use servo control and automatic measurement to mechanically manage processing conditions. Processes which previously relied on experienced operators can be automated to maintain consistent processing accuracy, unaffected by the operator's skill level. These machines also achieve a high level of precision in high-mix, low-volume production and when processing unusually-shaped workpieces, such as hydraulic cylinders.

Applications of Sunnen's honing machines

Sunnen has a full range of models, including vertical, horizontal, and dedicated tube models. They cover all kinds of sizes, from small diameters on the order of ⌀5 mm to large diameters of up to ⌀1,200 mm. They have a track record of use in applications that require precise internal diameter finishing, such as aircraft components, hydraulic devices, and automobile components.

Device capabilities and manufacturer support requirements vary from business to business, differing for precision components, large components and heavy industry, and component repair and processing.

We have carefully selected the honing machines that are best suited to companies based on the features and challenges of their varied businesses, freeing them from needing to rely on specific operators. Please use the information on this site in your comparisons and deliberations.

Sunnen's honing machine lineup

▼Click a product's name to see more detailed information.

Product Name	Features	Processing Range	Main Uses
SV15CD	Real-time hole status confirmation	Diameter: ⌀19 to 203 mm Length: Up to 279 mm	General purpose model for medium to large diameters (vertical)
SH6000	General purpose horizontal model suited for high-mix processing	Diameter: ⌀5.46 to 76.78 mm Length: Not indicated on website	General purpose model for small to medium diameters (horizontal)
HTS074020	Specialized for high volume processing of long tubes	Diameter: Max. ⌀1,200 mm Length: Not indicated on website	For heavy industry and long pipes

Processing Range	Diameter: ⌀19 to 203 mm Length: Up to 279 mm
Stroke length (mm)	Not indicated on website
Equipment Dimensions	Not indicated on website
Automatic Measurement Function	Yes
Sizing Function	Yes
Power Specifications	Three phase 230 V 60 Hz (for the SV15CFM, 220 V 50 Hz)

Real-time display of hole status during processing

With these honing machines, the hole status is shown on the display in real time while processing is underway, making it possible to visually determine what should be processed next. They support a wide range of diameters, from ⌀19 to 203 mm, and can process medium and large cylinders. Their touch panel design makes them easy to use for all kinds of operators, not just veterans.

Processing Range	Diameter: ⌀5.46 to 76.78 mm (varies by tool) Length: Not indicated on website
Stroke length (mm)	6 mm to 392 mm
Equipment Dimensions	Not indicated on website
Automatic Measurement Function	Not indicated on website
Sizing Function	Not indicated on website
Power Specifications	Not indicated on website

A horizontal model for small and medium diameter workpieces with easy-to-change tools and conditions

These horizontal honing machines are specially designed for the processing of small- and medium-diameter components. Unlike the SV-15 (for large components) and the HTS (for long pipes), the SH6000 was designed with particular attention to easy set-up changes. It also provides smooth support in worksites that do high-mix processing, where tools and processing conditions vary from product to product.

Processing Range	Diameter: Max. ⌀1,200 mm Length: Not indicated on website
Stroke length (mm)	Not indicated on website
Equipment Dimensions	Not indicated on website
Automatic Measurement Function	Not indicated on website
Sizing Function	Not indicated on website
Power Specifications	Three phase 460 V (frequency not indicated)

A large diameter model specially designed for long tubes

This machine has a processing capacity of up to 1,600 cm³/h and is highly suited to mass production lines that perform large-scale, continuous processing of long tubes with identical specifications. It has automatic rotation speed adjustment functions and automatic hole shape correction functions, so it can maintain consistent accuracy. The expandable structure can process holes in increments of 4 m or 6 m, and lengths can be extended afterward. It also flexibly supports future processing line changes.

Sunnen honing machine usage case examples

Precision processing of hydraulic pumps with almost no operator involvement

• Installed product: SV-1015
• User: Precision grinding and machining company

Background

In this usage case example, the SV-1015 was used in the manufacturing of hydraulic pumps for aerospace use. These hydraulic pumps, vital for flight, required processing for nine holes, and there was no room for error, with even micron-level mistakes being unacceptable. The honing machines that the company had been using had difficulty keeping each hole within the tolerance. Processing nine holes required polished skills and was an iterative process that took a great deal of time, as measurement was performed after each processing step.

Benefits of deployment

Following the introduction of the SV-1015, the company was able to achieve target dimensions for all nine holes. It reached a high processing capacity of 2.21 Cpk with almost no operator involvement. A customer, seeing the high quality of the processing, placed a batch order for five years of products. In this deployment example, the new model improved the manufacturing company's product quality and earned the trust of its customers.

75% reduction in cycle time when performing precision interior diameter processing of aircraft fuse pins

• Installed product: SV-1000
• User: Aerospace and defense component manufacturer

Background

This usage case example concerns fuse pins, components used in the aerospace industry. Fuse pins are normally used to secure jet engines to wings but to break away in emergency situations, preventing damage to the aircraft body and fires. To serve both the roles of securing and releasing engines, the fuse pins needed a tight 5-to-7-micron internal diameter tolerance and surface roughness. However, there were limits to both the processing times and production capacity achievable with manual honing machines.

Benefits of deployment

The introduction of the SV-1000 reduced processing times per part from 40 minutes to 10 minutes, cutting cycle time by 75%. The company went from being able to manufacture 9 parts per day to being able to manufacture 40. This case example is a demonstration of how consistent processing accuracy through CNC can continuously meet strict tolerance and surface quality requirements.

Sunnen's maintenance system and after-sales support

Sunnen's Indian subsidiary and global service team provide ongoing support even after installation

Sunnen has a subsidiary in India, so it can handle inquiries locally. Its global service team also performs on-site troubleshooting and repair, along with offering on-site training for operators.

Ongoing parts supply even after models have been discontinued

Sunnen's machines are guaranteed for 3 years of use or processing times of 6,000 spindle hours, whichever is shorter. The company has a policy of continuing to provide parts and perform repairs even for models which have already been discontinued.

Company profile

Company Name	Sunnen Products Company
Head Office Location	7910 Manchester Rd., St. Louis, MO, USA
Contact in India	Plot no. W-225, TTC Industrial Area, Khairne MIDC, Thane Belapur Road, Koparkhairne, Navi Mumbai, Maharashtra, India
Website	https://www.sunnen.com/