Engis

Engis is a manufacturer of single-pass bore honing machines for use in mass production. This page explains the differences between the SPM series and the LPM series, the applications each is suited to, and key points to check before deploying one of these machines overseas.

The strengths of Engis's bore honing machines

Single-Pass Bore Honing for Consistent Mass Production

Single-pass bore honing is performed by performing a single pass with a diamond tool with fixed dimensions, and then gradually stepping up to higher precision tools. It supports both through hole and blind hole processing. One of its features is that it can be combined with systems such as automatic measurement and tool compensation systems to achieve a higher level of reproduction in mass production lines.

How Engis's bore honing machines can transform your operations

When using the single-pass method, the processes from rough processing to final finishing are divided between multiple tools. One of the advantages single-pass honing has over conventional reciprocal honing is that it offers shorter cycle times for mass production.

Combining automatic measurement with tool compensation helps prevent dimensional inconsistency and defects.

Applications of Engis's bore honing machines

Engis's bore honing machines are a good match for mass production applications which require a high level of precision in interior diameter finishing. They are well-suited for the interior diameter finishing of precision components, which require minimal dimensional inconsistency and stable processing.

The SPM series is designed for small diameter bores for small and medium-sized components, while the LPM series is designed for large diameter bores for medium-sized and large components. They are especially good choices for mass production lines that require interior diameter precision and productivity, such as hydraulic components and automotive 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.

Engis's bore honing machine lineup

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

Product Name	Features	Processing Range	Main Uses
SPM Series	Multi-spindle mass production for small diameter bores	Diameter: Up to 50 mm Workpiece length: Not indicated on website	Small and medium diameter precision components
LPM Series	Mass production for medium and large diameter bores	Diameter: Up to 152 mm Workpiece length: Not indicated on website	Medium and large hydraulic components and automotive components

Processing Range	Up to 50 mm
Stroke length	620 mm
Equipment Dimensions	H: 3,060 mm W: 1,621 mm D: 1,799 mm
Automatic Measurement Function	Yes (Optional. Packages available for all systems.)
Sizing Function	Yes (Supports automatic tool dimension compensation, etc.)
Power Specifications	380-460 V 50/60 Hz or 200-240 V 50/60 Hz, three phase

Series for mass production lines performing multi-spindle small-diameter bore honing

Machines in these series can be configured with 1 to 10 spindles, so they are optimal for mass production of small or medium-sized components. Their configuration makes them a good choice for companies wanting to set up mass production lines with little switching of components types and an emphasis on tact time and processing stability.

Processing Range	Up to 152 mm
Stroke length	635 mm
Equipment Dimensions	H: 2,790 mm W: 1,807 mm D: 2,490 mm
Automatic Measurement Function	Yes (Packages available for all systems.)
Sizing Function	Yes (Website indicates that automatic size compensation function is available)
Power Specifications	460 V 50/60 Hz 3 phase

For applications involving mass production for medium and large diameter bores

These machines have 4 to 8 spindle configurations and are well-suited for mass production of products with medium or large diameters. They're a good option to consider when comparing machines that emphasize interior diameter precision and productivity for medium to large hydraulic components, automotive components, and the like.

Engis bore honing machine usage case examples

Case example of improving hydraulic valve body circularity and reducing tool costs

• Installed product: Engis Single-Pass Bore Finishing System
• User: Construction machinery hydraulic component manufacturer

Background

The user faced various challenges in processing hydraulic valve bodies: reducing dimensional inconsistency from using multiple bores, stabilizing circularity, lowering the cost of supplies and tools, and managing down time. It needed a processing method that would maintain a stable level of interior diameter quality in its mass production line while also making improvements to costs and operation rates.

Benefits of deployment

The user reported that thanks to its deployment of an Engis single-pass system, it achieved a processing capacity of Cpk 1.67 or greater, a circularity of 0.0005 mm, and a supply and tool cost (per part) of less than USD 0.01. It stabilized quality while reducing tool costs, making improvements to the entire mass production line.

Case example of improving ABS pump cylinder surface condition and productivity

• Installed product: Engis Single-Pass Bore Finishing System
• User: Automotive component manufacturer

Background

For ABS pump cylinders, what's important isn't only the interior diameter dimensions but also the consistency of surface conditions, which directly affects product functionality. In their mass production work done using conventional honing, the user was experiencing problems with reproducibility and processing speed. It needed to change its processing approach to achieve both high quality and productivity.

Benefits of deployment

By combining a six-spindle machine and specialized tooling, the user reached a processing capacity of 240 units per hour and achieved the required surface condition stability. It also reduced supply and tool costs to less than USD 0.03 per part, contributing to both mass productivity and quality.

Engis's maintenance system and after-sales support

Clear contact point information makes it easy to consult about both machines and tools

For mass production equipment, it's important to have a clearly defined contact point you can consult with if a problem occurs. Engis has inquiry lines for bore honing and a contact point for service requests. This makes it easy for customers to consult about not only machines but also tools and supplies, all through a single central contact point.

Asian site and global network

Engis has a global network, which includes an Asian site in Singapore. This makes it easy to find someone to consult with, even for overseas projects. If you are considering introducing Engis machines overseas, you can better visualize operations after equipment deployment by confirming not only whether or not there are local sites, but also warranty scopes, on-site maintenance conditions, and its system for procuring components and supplies.

Company Profile

Company Name	Engis Corporation
Head Office Location	105 West Hintz Road, Wheeling, Illinois, USA
Contact in India	Asian Contact Point: Engis Asia Pacific Pte. Ltd. (Singapore) Inquiries regarding bore honing: bfm@engis.com
Website	https://www.engis.com/