Over 12 CNC Milling Machines Owned & Operated by RAM Tool, Inc.

RAM Tool is a high-technology CNC machining facility with over 12 high-performance CNC machines housed within our 80,000 square foot facility. Our inventory of CNC Milling Machines includes Kuraki Horizontal Boring Mills, Acer Knee Mills, and Milltronics Toolroom Mills, ensuring we have the right machine to produce your company’s custom CNC-machined parts or tools. We purchase our CNC Milling Machines to increase our range of in-house contract milling services, decrease lead times, and gain improved control over the final product. Call us!

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In-house CNC Services Shop with Milling Machine Capabilities

Our local CNC machining services shop owns & employs dozens of CNC machines for custom in-house CNC jobs. We have a large inventory of CNC Milling Machines, featuring the highest-performing models from trusted brands such as Kuraki, Acer, and Milltronics. Each machine in our facility is specifically engineered for a distinct set of CNC contract milling services. With a total inventory of over 100 CNC machines, we are confident that we have the equipment capabilities to machine your product.

Since 1979, RAM Tool has utilized CNC Milling Machines to produce custom parts for nearly every major industry. Our Horizontal Boring Mills and Knee Mills can perform general tolerances of .03 inches, and .762 millimeters (762 microns). We can machine custom parts ranging from 3” x 3” x 3” in diameter or less than 1 lb. to 150” x 92” x 48” parts weighing up to 44,000 lbs. We are capable of performing a range of CNC services on metal materials including aluminum, carbon steel, stainless steel, titanium, and tool steel. We can handle table loads up to 17,000 pounds at speeds of up to 8,000 RPM.

Our CNC Milling Machine Tolerance Capabilities

Tolerances	Inches (in)	Millimeters (mm)	Microns (µm)	Machine Capability
General Tolerances	+/- .030	.762	762	Horizontal Boring Mills, Knee Mills

List of CNC Milling Machines

Horizontal Boring Mills

Horizontal Boring Mills are precision machine tools used to create accurate holes and cavities in large workpieces. They feature a horizontally-oriented spindle that can perform boring, drilling, and milling operations on stationary parts. At RAM Tool, we commonly utilize Horizontal Boring Mills for industries like aerospace, energy, and heavy equipment manufacturing for producing and modifying large, complex components with tight tolerances. Our Kuraki horizontal boring mills can handle up to 44,000 pounds and drill H-13 steel at speeds of up to 60 inches per minute.

Our facility owns eight CNC Horizontal Boring Mills that we use for custom CNC services. We have eight Kuraki KBT13EA models with a 5.12" spindle diameter in five unique configurations: two Kuraki boring mills with a 51" x 98" x 157" travel capacity and 44,000-pound max pallet load, two Kuraki boring mills with a 51" x 90" x 157" travel capacity and 44,000-pound max pallet load, two Kuraki boring mills with a 51" x 90" x 118" travel capacity and 44,000-pound max pallet load, one Kuraki boring mill with a 51" x 90" x 118" travel capacity and 33,000-pound max pallet load, and one Kuraki boring mill with a 51" x 78" x 118" travel capacity and 26,400-pound max pallet load. These eight milling machines are capable of performing precision tolerances of .00508 millimeters.

Kuraki KBT-13EA (51" x 98" x 157")

This powerful Kuraki horizontal boring mill offers exceptional precision and capacity for large-scale machining projects. With a massive 44,000 lbs. table load capacity and expansive work envelope, it's ideal for heavy-duty manufacturing in industries like aerospace and energy.

Kuraki KBT-13EA (51" x 90" x 157")

This Kuraki machine maintains an impressive 44,000 lbs. load capacity while offering a slightly reduced X-axis travel. It still provides ample workspace for complex machining operations on large workpieces.

Kuraki KBT-13EA 5.12" (51" x 90" x 118")

This Kuraki KBT-13EA 5.12" CNC Table Type Horizontal Boring Mill features a load capacity of 33,000 lbs. This model is ideal for projects that require precision machining of moderately sized workpieces.

Kuraki KBT-13EA 5.12" (51" x 78" x 118")

The most compact version in the Kuraki KBT-13EA series. This model is ideal for the precision machining of smaller, lighter workpieces while still offering the reliability and accuracy that Kuraki boring mills are known for.

QTY	MACHINE	TYPE	SPINDLE DIAMETER	TRAVEL CAPACITY	MAX PALLET LOAD
2	Kuraki KBT13EA	CNC Horizontal Boring Mill	5.1"	51" x 98" x 157"	44,000 lbs.
2	Kuraki KBT13EA	CNC Horizontal Boring Mill	5.1"	51" x 90" x 157"	44,000 lbs.
2	Kuraki KBT13EA	CNC Horizontal Boring Mill	5.1"	51" x 90" x 118"	44,000 lbs.
1	Kuraki KBT13EA	CNC Horizontal Boring Mill	5.1"	51" x 90" x 118"	33,000 lbs.
1	Kuraki KBT13EA	CNC Horizontal Boring Mill	5.1"	51" x 78" x 118"	26,4000 lbs.

Knee Mills

Knee Mills are vertical milling machines that feature a movable knee supporting the worktable, allowing for precise vertical adjustment of the workpiece relative to the cutting tool. They are highly adaptable for a wide range of machining operations, including face milling, slotting, drilling, and boring, making them ideal for prototype tooling, tool room work, repairs, and general job shop tasks. CNC knee mills enhance these capabilities by adding computer-controlled precision and efficiency, enabling the production of complex components with tight tolerances for industries like aerospace, automotive, and medical devices.

RAM Tool owns two CNC Knee Mills that we use in-house for custom CNC services. We have two Acer ProtoTRAK Knee Mills with ProtoTRAK CNC Control and Acu-rite digital readout features. Every part and tool is manufactured right here in the U.S.A. by expert Acer knee mill machine operators.

Acer ProtoTRAK Knee Mill (w/ ProtoTRAK CNC Control & Acu-rite Digital Readout)

The Acer ProtoTRAK Knee Mill combines the versatility of a manual knee mill with the precision of CNC control, featuring a ProtoTRAK CNC control system for easy programming and an Acu-rite digital readout for accurate positioning. This hybrid machine is ideal for both small-batch parts production and complex one-off parts.

QTY	MACHINE	TYPE	TRAVEL CAPACITY	CONTROL
2	Acer ProtoTRAK Knee Mill	Knee Mill	10" x 50"	ProtoTRAK CNC Control

Toolroom Mills

Toolroom Mills are compact, precision milling machines designed for performing various machining operations like milling, drilling, and tapping, and are often used for repairing tools, creating prototypes, and producing small batches of parts. Toolroom CNC machines are used to machine custom tools. Our toolroom CNC machines offer quality parts at an affordable price.

RAM Tool owns two CNC Toolroom Mills that we use to manufacture custom parts and tools for companies across the United States. We have two Milltronics MB20 Vertical Milling Machines with an 8200-B Series control. This machine model features a 40" x 20" x 24" travel capacity. We employ real, experienced machinists to operate our toolroom milling machines.

Milltronics MB20 Vertical Milling Machine

The Milltronics MB20 is a versatile CNC vertical milling machine featuring a 40" x 20" x 24" travel range and a large 54" x 16" table, making it suitable for a wide range of machining tasks. It offers both manual and CNC programming capabilities through its user-friendly Milltronics control system, combining the flexibility of a manual mill with the precision and efficiency of CNC technology.

QTY	MACHINE	TYPE	TRAVEL CAPACITY	CONTROL
2	Milltronics MB20	Toolroom Mill	40" x 20" x 24"	8200-B Series

CNC Job Shop with Dozens of In-House CNC Machines & Equipment

RAM Tool, Inc. owns and operates 100+ CNC machines and equipment inside our 80,000 square foot facility. Our CNC machinery list includes CNC Machining Centers, CNC Milling Machines, EDM Machines (Electrical Discharge Machines), Surface Grinders, CMM Machines (Coordinate Measuring Machines), Welding Machines, and other CNC Equipment. Whether your company requires a high-volume production run of 3 x 3 x 3 inch custom-machined CNC pieces or a single large 44,000-pound part, our CNC machining job shop likely owns the appropriate machine capable of producing your order.

Our wide selection of machinery allows us to manufacture custom CNC parts and supply them to a diverse range of companies in nearly every major industry. We purchase our CNC machines to provide short lead times, manufacturer-direct pricing, and total control over the manufacturing of every product. Every project is completed entirely in-house in Grafton, Wisconsin. Call us for more information.

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Machining Centers Learn More

Machining Centers

With over 19 high-speed Horizontal CNC Machining Centers, Vertical CNC Machining Centers, and 5-Axis CNC Machining Centers, our range of machines allows us to manufacture custom tools and parts to exact specifications for customers in nearly any industry.

Learn more about our Machining Centers

Milling Machines Learn More

Milling Machines

RAM Tool has an inventory of over 12 high-performance CNC Milling Machines including Horizontal Boring Mills, Knee Mills, and Toolroom Mills.

Learn more about our EDM Machines

Surface Grinders Learn More

Surface Grinders

RAM Tool owns and employs 6 Surface Grinders including three Okamoto ACC-Series Surface Grinders and three Acer AGS-Series Surface Grinders.

Learn more about our Surface Grinders

Electrical Discharge Machines Learn More

Electrical Discharge Machines

RAM Tool EDM services are powered by our 3 in-house Electrical Discharge Machines, featuring both Sinker EDM and Wire EDM machines.