EVB Series – Heavy-Duty Grade, Bowl-Style, Floor Model, Vibratory Tumbler

EVB Series Heavy Duty Bowls | Vibratory Tumbler Bowl for High-Volume Finishing

The EVB Series Heavy Duty Bowls are compact, floor-model vibratory systems designed for production environments where large quantities of parts need to be finished. This Vibratory Tumbler Bowl combines heavy-duty construction with high-volume processing and an extended screen deck for convenient separation of parts and media.

The bowl-style design rolls the load through the tumbler bowl while reducing part-to-part interaction compared with some tub and barrel configurations. These vibratory finishing bowls are intended for production environments where repeatable finishing is required.

The EVB Series is designed for high-volume usage and is available in multiple capacities and configurations for deburring, polishing, burnishing, cleaning, and other mass-finishing applications.

Vibratory Tumbler Bowl for Production Finishing

A Vibratory Tumbler Bowl uses controlled vibration to move parts and finishing media together. The movement creates repeated contact between the media and workpieces, helping remove burrs, machining marks, scale, rust, and other surface imperfections.

The EVB Series is available in capacities ranging from 1.5 ft³ to 95 ft³ across the listed models. This range allows the equipment to support different production requirements, from smaller production batches to large-scale finishing operations.

The bowl shape rolls the load through the finishing channel, creating a continuous finishing motion. This design can help keep parts moving around the bowl while limiting direct part-to-part impact. The result can be a more controlled finishing process for production parts that require consistent deburring or polishing.

EVB Series Heavy Duty Bowls for Large Production Loads

The EVB Series Heavy Duty Bowls are built with heavy-gauge steel and high-durometer polyurethane lining for repeated industrial use. Heavy-duty motors provide the vibration required for production processing, while the bowl configuration supports large quantities of smaller parts.

Kramer Industries offers the EVB Series with several capacity options, including EVB-140, EVB-380, EVB-700, EVB-1000, EVB-1300, EVB-1900, EVB-2400, EVB-3600, EVB-5000, and EVB-9200. Working capacities range from 1.5 ft³ to 95 ft³, allowing users to select a system based on batch requirements.

The equipment can also be configured with options such as a separating screen deck, compound metering system, media unload plug, pneumatic gate, automated unload, variable speed drive, sound covers, auto grease system, and settling tank.

Vibratory Bowl Finisher for Deburring and Polishing

A Vibratory Bowl Finisher can be used for deburring, polishing, burnishing, cleaning, rust removal, and scale removal. The EVB Series is intended for production applications where consistent processing of larger quantities of parts is required.

The extended screen deck provides a convenient method for separating finished parts from tumbling media. This can reduce manual handling after the finishing cycle and can be particularly useful in higher-volume production environments.

The EVB Series can process both wet and dry applications. Wet processing can be used with suitable compounds and process fluids, while dry processing can be used when the application and selected media allow a dry finishing approach.

The equipment can also be configured with a separating screen deck, compound metering system, and other process options depending on production requirements.

Media Selection for Vibratory Finishing

The media selected for a Vibratory Tumbler Bowl affects cutting action, polishing performance, surface finish, and cycle time. Ceramic, plastic, synthetic, and dry media can be used depending on the machine configuration and application. Some EVB systems can also be upgraded for steel tumbling media.

Ceramic media can provide cutting and polishing action for a wide range of metals. Plastic and synthetic media can be useful when a softer finishing action is preferred, particularly on softer metals or parts requiring controlled edge treatment.

Kramer Industries also supports media selection for these finishing applications. The correct media should be selected according to the workpiece material, starting surface condition, part geometry, required finish, and desired cycle time. Media size should also be appropriate for holes, recesses, and other part features to reduce the possibility of lodging.

Vibratory Tumbling for Reduced Part-to-Part Interaction

Vibratory tumbling in a bowl-style machine differs from a simple rotary barrel process because the bowl creates a vibratory rolling motion through the finishing channel. The toroidal movement can help keep parts moving while reducing direct part-to-part interaction.

This characteristic can be useful for production parts that require consistent finishing with less impingement. The product guidance notes that large bowl systems can be used for large batches of smaller parts and can provide reduced part-to-part interaction compared with vibratory tubs and barrel tumblers.

The EVB Series can therefore be used for a variety of production applications involving machined parts, stamped parts, cast components, and other workpieces requiring deburring or polishing.

Production Flexibility and Optional Features

The EVB Series can be configured to suit different production requirements. A separating screen deck can automate media and part separation, while a compound metering system can help deliver process compounds during wet finishing.

A variable speed drive can provide additional process control where required. Sound covers can help address noise considerations, and settling tanks can be included for systems using process fluids.

The available options also include automated unload and pneumatic gate configurations for applications where material handling and production flow are important. These options allow the equipment configuration to be matched to the specific finishing process rather than requiring every production line to use the same setup.

Choosing a Vibratory Finishing System

When selecting a Vibratory Tumbler Bowl, consider the quantity and size of parts, required batch volume, material, finishing objective, media type, wet or dry process, and desired level of automation.

Large production operations may benefit from higher-capacity models, while smaller operations can select a lower-capacity EVB model that matches their batch requirements. The extended range of EVB configurations makes it possible to select a machine based on both current production requirements and potential future needs. These vibratory finishing bowls can be configured around the production process and handling requirements.

Kramer Industries provides multiple vibratory finishing systems and related media, allowing the machine, media, compounds, and separation equipment to be considered together as a complete finishing process.

Specifications

EVB Series – Heavy-Duty Grade, Mini-Bowl Style, Vibratory Tumblers Specifications

EVB Series Model Specifications
Model	Working Capacity ( ft³)	Bowl Diameter	Channel Width	Motor HP	Full Load Amps @480V	Floor Space Required
EVB-140	1.5	28”	7.5”	2	4	3’ x 3’
EVB-380	4	38”	9.5”	3	4	4’ x 4’
EVB-700	7.5	50”	11”	5	6	5’ x 5’
EVB-1000	10	55”	13.5”	7.5	10	5’ x 5’
EVB-1300	14	62”	15”	7.5	10	6’ x 6’
EVB-1900	20	70”	17”	15	20	6.5’ x 6.5’
EVB-2400	25	74”	19”	15	20	7’ x 7’
EVB-3600	36	92”	20”	20	27	8’ x 8’
EVB-5000	52	100”	22”	20	27	9’ x 9’
EVB-9200	95	124”	28”	30	38	11’ x 11’
Options & Upgrades   (Available on most models)	Separating Screen Deck (may reduce stated Working Capacity) NEMA 101 Control Panel Compound Metering System Media Unload Plug Pneumatic Gate Auto Grease System Sound Cover – Vinyl (with optional winch) and Rigid Sound Hood Variable Speed Drive Automated Unload Gate Clearing Settling Tank