How to Select the Right Die Caster

When you’ve designed a part and are ready to partner with a die caster, you need to know that you’re working with the best. Unfortunately, unless you have an existing relationship with a reputable die casting supplier already established, finding the right partner to cast your part can be difficult.

When choosing a die caster, whether for aluminum, magnesium, or zinc die cast metals, most believe it simply comes down to cost. While cost carries a great deal of weight in the decision-making process, a good die caster will offer much more than a competitive price. They’ll provide you with a full range of services and post-production capabilities that can save you time and money in the long run.

Services like design engineering, mold flow simulation, and a wide variety of post-casting processes such as CNC machining, deburring, painting, plating, assembly, and total quality management, can sometimes be overlooked, but these services can prove very valuable. So when you work with a full-service die caster, make sure that these additional services and operations are part of the quote – that way, there are no surprises when you’re ready to move forward with the production of your part.

Benefits of working with a Full-Service Die Caster

Choosing to go with a single full-service die caster versus managing multiple processes and vendors on your own helps free up your company’s resources, decrease lead times, streamline logistics and inventory management, and saves money. In addition, it can result in improved designs and lower total cost because the full-service die caster will look for ways to add value across all of the processes.  

Before building a tool for your metal die casting design, be sure that your engineering team and the die caster are on the same page. At Chicago White Metal, our die casting engineers will engage with you to fully understand your product, its cosmetic and performance requirements, and its intended environment. With that understanding, our engineers can help optimize your design for maximum performance and overall value. In addition, the die casting engineer’s preplanning and analysis can recommend cost-saving measures — or prevent costly mistakes over the project life.

Another important question to ask during this process is whether or not the die casting supplier utilizes advanced technology such as process simulation software (e.g., Magmasoft®) before the tool is built? Using your CAD file, CWM can use the software to predict and optimize metal flow, air entrapment, metal velocity, thermal balance, hotspots, etc., during the die casting process. This will assure a quality die casting design, shorten lead times, and lower production costs.

Trust is the Name of the Game

The final question that your team should ask before choosing a die casting partner is whether or not you can trust that they will be there for you and your team throughout the process to produce the best possible part. Many factors contribute to the success of your project. Even the alloy choice (CWM offers aluminum, zinc, and magnesium) is an important decision because each has its unique properties with advantages and disadvantages. If your product requires post-finishing, it’s even more important to choose the right alloy because the physical properties of each alloy may or may not work with each type of finish.

While alloy recommendation is crucial for the success of your project, finishing options are equally important. It’s vital to ensure that your die casting supplier understands all the finishing options available and can guide you to the right finish. The die casting engineer must know all these variables from the project onset, avoiding costly quality issues later. These are things that our team at CWM takes into consideration with every project.

Experience matters, and with 84 years of experience and counting, CWM sets the industry standard for excellence. If you have any questions about the high-pressure die casting process, don’t hesitate to contact Chicago White Metal today. One of our experienced team members will be happy to help guide you in the right direction!

Equipment Highlight: FANUC Robots

Benefits of using Robots

At Chicago White Metal Casting, we strive to have the most advanced technologies available to assist with die casting, CNC machining, and other operations. For example, CWM has two FANUC robots in our CNC department – the M10iA and the M-20iB. The M-10/20 series robots offer increased load capacity and extended reach. These robots are small, but they are the perfect automation solution for many applications, especially when it comes to handling, assembly, material removal, and machine tending.

In addition to its increased load capacity and reach, the M-10/20 series robots use considerably less energy than older models; they also boast a cost-efficient modular design. Furthermore, the M-10/20 series robots offer integrated cable routing, making them considerably easier to maintain – ultimately saving time and money.

Robot Use at CWM

At CWM, we use the FANUC M-10/20 series robots to load/unload the CNC machining center for some of CWM’s higher volume parts. The robots that CWM employs can work with several different part numbers and utilizes camera-based vision systems to accomplish the following:

  • Verify the presence and location of holes
  • Determine the orientation of the part
  • Load and unload parts onto a CNC fixture
  • Install special clamping inserts
  • Confirm the clamping is correct
  • Sequence part unloading/loading from conveyor

One of the most significant advantages of utilizing these robots is that several hours’ worth of material can be loaded/unloaded into side-by-side input/output conveyors integrated into the cell and tied into the robot’s logic. This system allows the robot/CNC cell to work continuously, resulting in a steady flow of parts. In addition, the robot incorporates several camera-based inspection steps using a 2D vision verification system that stimulates the eyes, further assuring that parts will meet CWM’s and the customer’s quality standards.

FANUC M-10iA Robot.

Camera to confirm part integrity.

Loading conveyer.

Unloading conveyer.

CNC machine where the part is loaded.

Why Did CWM Choose FANUC?

The FANUC M-10/20 robots are designed for various light material handling applications. They are considered high-speed robots and can be used in many scenarios, including assembly, CNC machine tending, and even in the die casting process. In addition, this robot simplifies applications and floor plans because it is more compact than other robots while maintaining the highest axis speeds and best repeatability. 

Another benefit of using these robots is they can be mounted at any angle on the floor, wall, or ceiling. They are also very small, which means they can fit into tight workspaces. At Chicago White Metal, we currently have six active robots in our CNC department – four universal co-bots and two FANUC Robot Cells. Co-bots, or collaborative robots, are different from robots because they can work with humans to accomplish tasks while robots work independently and run with no human intervention.

To learn more about the equipment that we have here at CWM, visit this page. If you would like to contact our team here at CWM, call (630) 595-4424, or you can request a quote here.

Die Cast Prototyping – Benefits and Types

In addition to Chicago White Metal’s advanced part design and DFM assistance, CWM offers various prototyping options to bridge the gap between design and production tooled high pressure die casting. CWM’s prototyping process offerings include:

  • 3D printing (resin)
  • CNC machining
  • Gravity casting via the sand, rubber-plaster mold, or investment casting processes
  • Prototype die casting

Reasons to Use Prototyping

Prototyping offers the opportunity for design verification – a chance to identify design flaws before committing to production level tooling. And while it is not necessary to prototype every design, sometimes doing so saves time and money. Generally, the further along in the developmental cycle a design error is discovered, the greater its cost.

When tooling needs to be scrapped or reworked, the impact is evident in terms of costs and delays. However, reworking a die cast die also adds cost in decreased die life and potential negative quality impacts. Using today’s prototyping technologies can help manufacturers avoid these stressful situations.

There are several prototype methods from which to choose. Selecting the best option for your application comes down to tradeoffs. For example, some options, such as 3D printing of a plastic model or machining from billet, are relatively inexpensive for low quantities because no tooling is required. But the mechanical properties of a plastic or machined part are quite different than the properties of a die casting. Assessing what prototype process is best for your needs requires consideration of quantity, timing, mechanical properties, dimensional accuracy, surface finish, wall thickness, cosmetic requirements, etc. A good high pressure die casting supplier should be able to guide you toward the appropriate option.

Prototype Methods

(click image to enlarge)

3D Printed Prototypes

3D printing enables the production of rapid prototypes in many types of plastic, directly from STL design files. Fused Deposit Modeling (FDM) is one form of 3D printing that builds parts layer-by-layer, from resin, directly from 3D computer data. An FDM machine can produce geometrically complex shapes to tolerances of +0.005 in (+.127 mm).

At CWM, we use FDM prototypes for every new die casting project to expedite production and shorten total lead-times. These prototypes give our suppliers and our engineering, production, and quality teams a chance to see parts in advance, ensuring that the part and die cast design is robust. They are also used to develop fixtures, tools, racks, etc., for inspection, machining, assembly, painting, plating, etc. FDM models ensure that the part design results in an efficient manufacturing process and helps reduce overall project lead-time by allowing simultaneous construction of downstream process tooling.

Machined Prototypes

Machined prototypes are widely used because they offer product designers a good combination of physical and mechanical properties, generally short lead-time, and zero to minimal tooling investment. Prototype parts can be machined from billet via CNC machining by working directly from customer CAD files. After transferring a machined prototype to a CAM program interfacing with CNC workstations, we can produce these prototypes in just a couple of days.

CNC machining can produce parts to almost identical part weights and hold exceptional tolerances such that validation of form and fit is assured; we can then perform many functional tests. However, properties are not identical to die castings and parting line conditions, and sometimes the draft required in a die casting is not represented in a machined prototype.

Gravity Cast Prototypes

Sand casting, investment casting, and rubber plaster-mold castings are some of the gravity cast processes used for prototyping. Because of longer solidification times and alloys specific to those processes, various heat treatments are used to approximate a high pressure die casting alloy’s properties.

Compared to high-pressure die casting, sand cast prototypes require thicker walls and larger tolerances, so features that might be “as-cast” in a die casting may need to be machined in a sand casting. These processes utilize lower-cost tooling than high-pressure die casting but have much higher piece prices. These design, property, and cost tradeoffs have to be considered when evaluating the best prototype approach.

Die Cast Prototypes

For those who want a prototype with the same properties, alloy, and geometry designated for production and larger quantities, a high pressure die cast prototype is often the best approach. Prototype die casting dies can be produced in shorter lead-times and at less cost because they utilize standardized components – like an existing die base – and pre-hardened, uncoated tool steels that do not require post machining heat treatment.

The tool will not run as efficiently as a typical production die, and flash will need to be removed by hand instead of with a production trim die, but part costs will be much less than machined or gravity cast prototypes. A prototype tool can provide 1000 or more high-quality pieces that can be used for prototype or even initial production.  

The CWM Difference

Chicago White Metal offers all of these prototype options that you read about today. If you are interested in more information about prototyping or if you would like to speak with one of our team members, email or call (630) 595-4424.

Aluminum Die Casting Benefits & Die Life Considerations

If you are considering aluminum die casting for a new part, there are several advantages to doing so. Aluminum die castings are lightweight, corrosion-resistant, has high thermal and electrical conductivity, and are very durable. Aluminum die castings remain strong at high temperatures and retain their dimensional stability even if the part has thin walls or is a complex shape.

Aluminum die castings also have excellent mechanical properties, making it a popular alternative to steel and iron. This is especially true for the automotive industry, which is continually looking for lightweight, durable materials.

Benefits of Aluminum Die Casting

Aluminum can be cast in a variety of ways. The benefit of using the high pressure die casting process over other aluminum casting processes is lower part cost. The aluminum high-pressure die casting process can produce a near-net shape in seconds.

Though high pressure die casting tooling is more expensive than other casting processes, the heat-treated steel and water-cooled die cast die might produce 75K-200K “shots” over its life. And depending upon the part size, geometry, and demand, tools can often be built to produce multiple parts in one “shot,” which further reduces the part price and allows the tooling cost to be amortized over very large quantities of parts.  

Aluminum is the most popular die casting material by far because it is economical and provides a good mix of properties. There are a surprising amount of parts from numerous industries – like automotive, medical, alternative energy – that are cast via the aluminum die casting process due to its many valuable properties.

Aluminum Die Casting and Die Life Considerations

To maximize die life, certain considerations must be taken into account before building the die. Factors that contribute to die life include:

  • The overall design of the part
  • Type of tool used to create the die
  • Configuration of the mold
  • Die steel, heat-treating techniques, and die coatings
  • Expectation for part quality

Before a die is built, the customer first presents a concept or existing part to a die caster. A die cast engineer will assess the project from design to end product and work with the customer to optimize the part design for die casting. An initial discussion with the die caster may include topics such as:

  • Functional and cosmetic requirements
  • Tolerances
  • Annual and lifetime volume
  • Alloy choice
  • Mating parts
  • Project timing
  • Optimizing wall thickness

Importance of Partnering with an Experienced Die Caster

An experienced die caster will take the time to consult with you about your application and assist you with product design. They will then design the tooling to produce parts with repeatable dimensions, excellent surface quality, consistent mechanical properties, and long tool life.  

These factors provide the greatest opportunity for cost savings and maximizing value. A less experienced die caster might offer lower initial costs, but this could cost you in the long run, due to quality, delivery, or tool life issues. A die built to lower specifications will likely fail at an inopportune moment, shutting down production and forcing you to spend much more than what you thought you saved initially.

Contact Chicago White Metal Today

Chicago White Metal Casting (CWM) has 83 years of experience providing our customers with excellent service, saving you money, and resulting in products that you and your customers will love. To find out more about our aluminum die casting service, or other capabilities, contact us online today. You can also reach us at +1 630-595-4425 or via email ( if you have any questions. You can also click here to request a quote online.

CWM Adds New Idra Die Casting Machine, Full Implementation Planned for Q4 of 2020

Chicago White Metal is extremely proactive in the research of advanced technology and innovation, and their implementation into the die casting process. These efforts are put forth by the company in order to improve and enhance quality, efficiency, measurability, and overall cost savings for existing and future projects.

CWM leadership encourages an environment of cultivating innovative ideas where process improvement is concerned, granting members of the team an opportunity to take an active role in examining and suggesting alternatives to either modify or drastically change current techniques. The team is excited to implement these innovations into the workflow in both traditional and non-traditional ways. 

New Idra Die Casting Machine (2019)

A new Idra Die Casting machine was purchased last year. Extensive planning by the Chicago White Metal team was thoughtfully executed, with full implementation planned for the beginning of Q4 in 2020. This new die casting machine has a 900-ton capacity, which gives Chicago White Metal the opportunity to accommodate substantially larger applications. Although the machine is being installed into the magnesium department, it will initially be used to cast aluminum parts. 

Electric Vehicles: Component Manufacturing Using the High-Pressure Die Casting Process

The automobile industry is the largest market for high pressure die casting components. The demand for electric vehicles has been rapidly growing thanks in large part to changes in emission norms worldwide and a shift in consumer preferences. These changes have pushed automakers to replace heavier components with lightweight, environmentally-friendly options made from alloys like Magnesium or Aluminum.

Reducing weight is significant for hybrid electric, plug-in hybrid electric, and electric vehicles, where battery efficiency is critical. Aluminum and Magnesium die cast components can dramatically reduce vehicle weight, which improves overall vehicle performance, increases fuel or battery efficiency, and extends driving range. Chicago White Metal is helping to fuel this evolution by casting complex shapes at near-net shape in high volumes and within tight tolerances using lightweight alloys.


Automakers who make electric or hybrid cars are increasingly turning to Aluminum due to its combination of excellent mechanical and physical properties at an attractive cost. In addition to weight reduction, high-pressure die cast aluminum alloys have added dimensional accuracy and stability – not to mention the added strength and high-speed production capabilities.

Lighter Weight and Good Malleability

While not as light as Magnesium, Aluminum is still 1/3 the weight of steel, which goes a long way when it comes to reducing the weight of a vehicle. That’s why Aluminum die castings are replacing steel in structural and cosmetic body parts (i.e., vehicle bodies, hoods, doors, bumpers, crash boxes) in modern vehicles.

Malleability is also a significant factor as to why automakers are turning to Aluminum. It can be easily rolled into a sheet, formed as a stamping or extrusion, or welded. And it can be a high-pressure die cast, which allows for the rapid conversion of molten metal to a net shape 3-dimensional complex shape.

Aluminum is excellent for automotive applications when there’s a need for high visibility and structural integrity, such as in A-B-C pillars. While Aluminum is lighter than steel, it absorbs more energy, providing an extra layer of safety for the vehicle as well. Utilizing aluminum components can help reduce vehicle weight by as much as 40% without compromising the safety of the vehicle.


Magnesium was initially used in race cars in the 1920s to gain a competitive edge because of how lightweight it is. Now automakers use this lightweight alloy for applications like mirror housings, steering columns, driver’s airbag casings, seat frames, and dash encasings.

The auto industry’s quest for greater battery and fuel efficiency, along with demand for improved performance, has driven an increased interest in high-pressure die cast Magnesium alloys. These alloys include AZ91D with its excellent combination of mechanical properties and the highest strength to weight ratio of any structural metal.

Mg is 75% Lighter than Steel, 33% Lighter than Aluminum 

Magnesium provides a drastic weight difference that supports its use as a durable metal alternative to steel and plastic. Unlike plastic, Magnesium’s properties do not degrade with temperature and UV light, and Magnesium is 100% recyclable. With its superior dampening capacity and low-mass inertia, Magnesium is well suited for parts designed for frequent and sudden changes in motion direction – making it ideal for car part design. Many part designers also prefer working with Magnesium because they can produce parts that are more complex than steel, without sacrificing strength.


Although Zinc products are heavier than their Aluminum and Magnesium-based counterparts, they do have the highest yield strength of all three alloys. Zinc can also be cast thinner than any other metal and can hold extremely tight tolerance requirements. While Zinc might not be the best option when it comes to the light-weighting strategy, several Zinc-made applications are ideal for automotive design and structure.

The CWM Difference

Chicago White Metal Casting can cast all three families of alloys; Aluminum, Magnesium, and Zinc. Our technical expertise, combined with full-service capabilities and engineer design services, can provide automakers or part designers with die casting solutions that meet the challenges of their hybrid electric, plug-in hybrid electric, and electric vehicle part design.

Contact us today by filling out the form on this page or call +1 630-595-4424 to speak with a member of our team.

Click here to download the White Paper .PDF.

CWM Takes Recycling to New Levels

CWM Recycles AL, ZN, and MG
CWM Recycles

As a further refinement to our environmentally responsible culture, CWM has launched a new Recycling Initiative to help take our focus on environmentally friendly manufacturing and overall stewardship to a new level. One of our key objectives is to encourage similar programs with our suppliers, neighbors, and customers.

CWM Recycles Magnesium Scrap

CWM’s recycled materials, such as plastic, steel, cardboard, electronics, etc. are typically sent to a certified recycling vendor. CWM, however, as part of our new Recycling Initiative, is taking the extraordinary step of requiring our recycling vendors to provide a full manifest/certification and/or a detailed process map that illustrates exactly how recyclables are processed. We are finding that not everything is being recycled as we thought. Plans are underway to deal with this issue transparently, and to determine what improvements can be made.

We are also asking our suppliers to provide the recycled content of products sold to CWM. As an example, we asked our food/beverage provider to see if plastic stirrers, lids, utensils, and containers can be replaced with something more environmentally friendly. That effort resulted in eliminating plastic soda bottles (cans and cartons only), changing coffee stirrers from plastic to wood, and replacing foam coffee cups with biodegradable ones.

CWM takes environmental stewardship seriously. We’ve been a leader in our industry in this regard, having had recycling programs in place for more than 30 years. And though we can’t completely overhaul the entire recycling industry on our own, our team will do what we can to initiate changes. We are confident that this renewed Recycling Initiative will have a very positive impact on CWM and our community of suppliers, customers, and neighbors. Stay tuned for more information in the coming months!

CWM and Crossbow Manufacturer Hit the Target with a NADCA Design Award!

CWM CEO and President Eric Treiber accepts NADCA Award
CWM CEO and President Eric Treiber accepts NADCA Award

Chicago White Metal collaborated with a crossbow maker to get a bullseye win for a riser part!  Eric Treiber accepted the award on behalf of CWM for the 2018 North American Die Casting Association (NADCA) Excellence in Design Award, winning the “Aluminum 1 to 10 lbs.” category.

The crossbow manufacturing company was focused primarily on two things: safety and quality.  The riser is a safety-critical part that is the “heart” of the crossbow, so the strength of the part was vital to the success of the end product.  The crossbow was designed to be narrow and made for pinpoint accuracy.  It is one of the lightest crossbows on the market, weighing in at only 6.3 lbs.

Crossbow riser piece cast by CWM

This was the manufacturer’s very first die cast part, which enabled them to convert the “machined from extrusion” approach that they typically do for crossbow risers to a high pressure die casting process.  The design was modified to incorporate as-cast pockets in order to eliminate additional assembly.  Ultimately, the cost was reduced by 1/3 simply by converting to the high-pressure die casting process.

“The Aluminum 1 to 10 lbs category is typically a more competitive category.  That makes the win even more of an honor,” Marketing Coordinator Roseann Rimocal says.

CWM’s internal marketing showcase will display the parts, the end product, and the award for a couple weeks.  The plaque will then be transferred to its new home in the Research & Development wing, along with a number of other design awards Chicago White Metal has taken home over the course of many years.

CWM Industry Spotlight: Robotics

CWM Industry Spotlight: Robotics
CWM Industry Spotlight: Robotics

Industry Outlook

Due to the increasing popularity of automation, the robotics industry continues an upward trend in today’s economy.  Robots take necessary operations and create measurable tasks, which can accurately estimate project timelines.  Robots also perform tasks at a lower cost and allow very little room for error, working in a way that cannot be replicated by a human manufacturing team.  New robot technology is constantly being researched and implemented, allowing rapid growth in capabilities.  Though the robotics industry is generally known for great success in automotive manufacturing, it has given various other industries the benefits of automation.

For example, service robotics are being utilized in government initiatives for military/defense sectors to reduce human involvement.  This would increase the number of unmanned ground vehicles deployed into the front lines, reducing the number of casualties in the face of danger.

The medical industry is another example.  Medical service robots work with MRI, CT scans, fluoroscopy and ultrasound imaging, increasing productivity and decreasing malpractice liability, human error, and the exposure of radiation to human staff.

Robot Usage Chart

Service robotics are estimated to reach $21.7 billion by 2022, with growth over 17.8% from 2015 to 2022.  Medical service robotics sales were just over $2.1 billion in 2014 and are expected to exceed $6 billion by 2022, growing 15% during the forecast period.

The Role of Die Casting in Robotics Products

There are many parts inside of a robot which are ideal candidates for the die casting process.  Aluminum, magnesium, and zinc are the most common alloys in die casting and all three can be used in any type of robotic equipment based on part requirements.  CWM die casts durable components that withstand the wear of repeated tasks, exposure to harsh environments as well as office settings, and protect the delicate electrical work in a robot.

How CWM Contributed Die Castings to the Industry

Chicago White Metal manufactures thousands of parts that have been incorporated into robots.  The CWM engineering team collaborates with customers to produce castings at reduced costs.  These parts are generally high in quality and in strength to protect the delicate electrical work in a robot.

Aluminum for Robotics

ReThink Robotics and CWM

Aluminum A380 is the most frequently used alloy in die casting, offering the best combination of material properties and castability.  Aluminum die castings are used in various industries, including the robotics industry.  CWM casts several components, including housing in the arm, wrist, base, “elbow”, and several other parts of industrial robots.  CWM offers an aluminum alloy data sheet, available for download here.

Aluminum is the ideal choice when the strength-weight ratio is important.  It is about 1/3 the weight of steel and higher tensile strength than cast iron, which are other popular metals used in robot manufacturing.  Of the three, aluminum is the most abundant resource, providing a cost-efficient product.  Aluminum is also an excellent non-magnetic, non-sparking conductor, which makes it suitable for robotic construction.

Magnesium in the future?

Magnesium AZ91D is known for its lightweight properties as a metal.  AZ91D can also be designed for robotic components, when the requirements call for a weight reduction and portability without compromising on material strength and rigidity.  Chicago White Metal can use magnesium in various robotic applications.  For more information on the Magnesium alloy AZ91D, download the white paper here.

If you would like to learn more about the capabilities of die casting and the robotics industry, e-mail us at or give us a call at 630-595-4424.

CWM Industry Spotlight: Lawn & Garden Industry for Die Castings

CWM Industry Spotlight: Lawn & Garden Industry for Die Castings

Industry Outlook

The lawn and garden power equipment industry is experiencing a steady increase each year, with a 3.2% annual growth rate.  Projections show that at this rate, the industry will reach $11.7 billion by 2019.  While the residential consumer segment still dominates the market, the commercial market has seen an uptick in growth that is clearly outpacing the segment.

The lawn and garden industry includes products such as lawnmowers, turf and grounds equipment, trimmers, edgers, garden tractors, rotary tillers, chainsaws, blowers, vacuums, pruners, sweepers, snow throwers, hedge trimmers, and many other power equipment items.  There is a growing importance within the industry not only for performance, portability, affordability and quality, but also to incorporate environmentally-friendly processes to the manufacturing and assembly of the internal parts of the equipment and machinery.

The Role of Die Casting in Lawn & Garden Products

There are hundreds of components within lawn and garden equipment and vehicles which are ideal candidates for the die casting process.  Aluminum, magnesium and zinc are the most common alloys in die casting and all three are used in a variety of lawn and garden product applications where they provide better overall value than plastic, stampings or machined parts.  Each of the die cast alloys have unique properties that can be used based on the requirements for the parts.  CWM die casts components in all three alloys to meet the durability and high strength demands for outdoor, rugged and long-lasting end products.

How CWM Contributed Die Castings to the Industry 

Chicago White Metal manufactures hundreds of thousands of parts which have made their way into various consumer and commercial applications within the industry.  The CWM Engineering team works with customers to engineer and produce durable, high quality parts at reduced costs.

Aluminum for Encasements

Aluminum A380 is by far the most frequently used alloy in die casting.  This alloy offers the best combination of material properties and castability.  Aluminum alloy die castings are used in a wide variety of industries, including the lawn and garden industry.  CWM casts several components, including gear cases, covers, and several parts which go into a differential assembly. 

Magnesium for Portability

Magnesium AZ91D is the material incorporated into the design of several components for portability because of the alloy’s lightweight properties – a known alternative to plastic but with the strength and rigidity of a metal.  Chicago White Metal uses magnesium to cast parts that are ultimately assembled in lawn and garden end products, including both consumer and professional handheld lawn maintenance equipment.  This bearing cap is part of an assembly inside of a professional hedge trimmer & blower.

Various roll cages have also been produced by CWM, which go into differentials found in commercial and consumer mowers.  Along with the examples given, many other components have been engineered and manufactured by our team to carefully meet the high standards of our customers within the lawn and garden industry.

If you would like to learn more about the capabilities of die casting and the lawn and garden industry, e-mail us at or give us a call at 630-595-4424.