Welcome to Misumi's new 19-Minute Webinar Series.
For those of you here that are new to Misumi,
Misumi is a global supplier of Configurable Components.
You may ask, why configurable? What is it?
Configurable components solve the designer's dilemma.
A designer has two choices for components; Standard
or Custom. Standard components have a limited selection
and often forced designers to compromise their designs.
These many pluses such as CADs, static part numbers,
fast delivery, often seem inexpensive
and convenient. The other choice is Custom.
Custom components have many drawbacks.
Designers have to make the solid models themselves and all the manufacturing
drawings.
Purchasers too can attest to the long wait for quotes,
the expensive set up charges for short runs, and the long lead times.
We are forced to use custom components though because of the flexibility.
Misumi offers Configurable,
which is the best of both; easy and flexible.
Configurable components are easy to design with and purchase.
Online, select the product geometry desired,
the material and surface finish, input the size for each configurable dimension
within the range and increments shown.
You'll get a smart part number, instant price and days to ship,
and the CAD model. All of this configurability
is available with our over one million components,
available at misumiusa.com.
Now I'll turn it over to our Misumi engineer.
Hi, my name is Mike Milligan,
and I'm from the engineering department at Misumi USA. In this webinar,
I'll be discussing Misumi's lineup of precision spacers:
washers and collars. Misumi offers a large variety of washers and collars
that come in many shapes,
sizes, and materials. Materials range from 1045 carbon steel
to paper-based bakelite. Misumi has a washer or collar that will fit in your next
application.
Before I get ahead of myself and dive into Misumi's vast selection
washers and collars let's start with the most basic question,
what are washers? Simply put, washers are disks
that are used to create space between a fastener and the surface being fastened
to.
At Misumi, washers are components that fall into the category
of factory automation components. They are subgrouped with collars and fasteners
since they're often used together. A washer's primary duty is to distribute
the force
of a fastener on the surface being fastened to. However,
they are commonly used as insulators and spacers.
Moving along to collars,
the same basic question can be asked, what are collars?
Collars are components that are used to create space between two flat surfaces
while keeping a uniform applied force throughout the system.
Adding a collar to an application can prevent deflection by increasing the
surface area
handling the deflected force. Similar to a washer,
a collar can also insulate the fastener from the surroundings and help prevent
corrosion.
You may be thinking,
washers and collars sound pretty similar, so what's the difference?
At Misumi, the difference between a washer and a collar is simple:
washers have a thickness that is less than or equal to 10 millimeters
and can be as thin as one millimeter. Anything that's thinner than one
millimeter
is called a shim. Collars on the other hand have a length
of least 10 millimeters and can be as thick as a hundred millimeters.
Being able to understand the difference between a washer and a collar
will help you speed up your selection process. Another key factor in speeding
up the selection process
is understanding the difference between selectable and configurable dimensions.
Selectable dimensions are specific values that can be selected from a table.
Notice for selectable dimensions there are different values of
V and T available for given diameter D.
Configureable dimensions refer to a range of values that can be chosen from
in a particular increment. For example, the thickness T
is the configurable dimension that ranges from one to ten millimeters
in point five millimeter increments. This thickness range is available
regardless of the diameter. It is better to think of Misumi's
configurable washers as precision spacers. We provide
a wide range values so you can have the exact spacing you need.
The major difference between Misumi and other suppliers
is the other suppliers only offer standard sizing dimensions in large
intervals. You are stuck designing around what they have available
as opposed to what you actually need. At Misumi,
you are able to get sizing in much smaller intervals
which gives you complete control over your design.
Misumi no longer forces you to compromise and use the closest available
option
With Misumi's configurable motto, you're able to select the exact size you
need
without the cost of a custom spacer or the need to modify a cheap standard
option.
One final concept to understand is the difference between standard
and precision class. Misumi's washers and collars come in both standard and
precision classes.
There are two major differences between the two classes; the first being
the tolerance of the T dimension of washers and the L dimension of collars
is much smaller for precision class than it is for standard class.
Standard class offers a thickness tolerance of .1 millimeters
for washers and a length tolerance of 0 to -.1 millimeters
for collars. Precision class offers a thickness tolerance
and a length tolerance of
+/-.01 millimeters for both washers and collars.
The second difference is the surface roughness of the faces.
The surface roughness for precision class offers a surface
that'll be more consistently smooth than for standard class.
As you just saw, Misumi has standard and precision classes of
washers, which offer a great deal of configurability.
However, the need may arise for something more precise,
which is why Misumi has an option that allows you
to select the thickness tolerance you want.
Thickness selectable washers are the most configurable washers
Misumi has to offer. The V, D,
and T dimensions are configurable within the given parameters,
while the V and D tolerances are available as shown.
The T tolerance, however, can be selected
from any of the given values in green.
Misumi has a wide range of both oversized and undersized tolerances,
which allows you to create the exact amount of space your application needs.
Now that you have a better understanding Misumi, it is time to start determining
the proper
washer or collar for your application. One of the first considerations
when configuring a part is what the material will be.
As you can see, there are many material choices available
in both metal and resin. Keep in mind
that not every material is available for every set of dimensions or shape.
It is important to choose the proper material for your application
because it can help prevent corrosion, insulate a system,
and prevent failure.
When configuring a washer or collar it is important to consider
more than just the material, you also need to take into account the dimensions.
Misumi allows you to configure your outer diameter D,
inner diameter V; for washers, your thickness T,
and for collars, your length L, within the value ranges
in the table on the right. Misumi understands that spacing needs do not
normally come
in convenient standard dimensions, which is why we try to provide as many sizing
options as possible.
When it is time to apply the washer or collar to your system,
we want it to have the desired fit.
In this example, which was provided to Misumi as part of a case study,
a simple metal washer is used to distribute the load
of the fastener. In many applications, a simple standard
washer or collar will be sufficient, but special situations may arise and
something a little different may be needed.
To help provide a solution to these special situations,
Misumi's metal washers have several alterations that allow you to change the
shape
or tolerance. The internal notch alteration
creates a notch on the inner diameter which allows clearance for a keyed shaft.
The One Flat alteration creates a flat on one side,
which can allow the washer to fit up against a flat surface.
Similarly, there is an option for two flats, which is perfect for applications
where a washer is located between two flat surfaces.
Misumi also has tolerance alterations for both the inner and outer diameters,
which are useful when a certain fit is necessary.
Misumi's collars also have a series of alterations that are available.
The taper alteration adds a taper to one or both sides of the collar.
The set screw alteration adds a tapped set screw hole
with course threading. The chamfer alteration
creates a chamfer on one or both sides of the collar.
The slitting alteration creates a slit down the length of the collar.
Finally, the tapping alteration provides coarse or fine threading
inside the collar. Sometimes a simple alteration
isn't a sufficient solution to solving a spacing or functionality issue.
That's why Misumi provides different shapes of washers and collars.
One of the different shapes Misumi has to offer is the flanged washer or collar.
Flanged washers are perfect for applications where you're trying to
ensure a snug fit.
You may have a fastener that doesn't fit as tightly as you would like,
and adding a flanged washer or collar can be an easy fix.
As you can see, you're able to configure every blue dimension of
Misumi's flanged washers, which allows you complete control over the tightness of
the fit.
Notice the blue flanged washer in the application on the right
The flanged portion serves as a washer and the collar portion helps protect the
fastener from the surrounding metal.
This flanged washer accomplishes the same goal as a washer and collar do when used
together.
Misumi also offers collars with a pilot.
This pilot is useful in applications where locating is necessary.
This application depicts an opaque piece of metal being held in place.
Flanged collars are being used to protect the fastener
in the clamping device.
This second application depicts a flanged washer
being used to provide a snug fit in the fastening hole
and prevents metal on metal contact. Other types
of washers and collars that are designed for special situations
are counterbore are and countersunk washers.
Counterbore and countersunk washers are each designed
for a particular type of fastener. A counterbore washer
is perfect for a cap head screw. It helps protect
the head from surrounding materials and can be configured
in every dimension. Similarly,
a countersunk washer is useful and applications where a flat head cap screw
is being used.
These screws can damage the material they're being fastened to
due to their shape. By using a countersunk washer,
you are able to stabilize the screw within the washer
and help protect the head.
Misumi also offers a variety of spring washers
that are used for locking purposes. The wave washer
creates an upward and downward force on both surfaces that oppose the washer.
The wave washer acts as a spacer between the two surfaces
while applying the necessary force needed to hold them in place.
The disc spring washer provides a concave shape
for the fastener to tighten to. The disc spring washer
has similar functionality to the wave washer,
however, the disc spring washer provides a more uniform distribution of the
forces.
Serrated conical disc spring washers are used in a very similar manner to disc
spring washers.
The major difference is the serrated faces they provide
extra friction which helps prevent loosening.
These are especially useful in high vibration applications.
Simple spring washers are used to tightly secure
the fastener. Simple spring washers create a non-uniformly distributed
force
on the head of the fastener. Finally,
the simple lock washer is different from the spring washer
because it uses biting force to create a lock.
This application depicts spring washers in action.
Spring washers were chosen for locations where fastener loosening
would lead to failure. Notice the base
of the silver and blue hydraulic piston.
This piston will be constantly moving, creating a wiggle effect on the fastener,
which may lead to loosening. The spring washer
will help combat that wiggle and keep the fastener secure.
If you look closely at this application, you'll notice that there's actually a
standard metal washer located towards the top.
This portion of the machine will not experience much movement,
so a standard metal washer is sufficient. Slotted washers
have a very different use than the lock and spring washers.
Slotted washers are similar to regular washers but provide a larger inner raise
that is useful because you can adjust the location of the bolt.
Slotted washers are particularly useful in applications
where the location of the bolt is offset from the center of the washer.
The flanged slotted washer can be used in applications where you want to prevent
two opposing plates from coming in contact with the fastener,
and it also allows you to mount two plates off-centered.
Misumi offers washers in a wider range of materials
than just metal and resin. Misumi has urethane washers
with a variety of hardness options, which are useful
in many applications where high temperatures or wear resistance is
required.
The hardness of these washers range from A30,
which is a soft as a bicycle tube, to A95,
which is as hard as a golf ball. Two other material types
Misumi uses for washers are rubber and sponge.
An application where rubber or sponge washers can be used
is when a washer comes in direct contact with a delicate surface that needs to be
protected from scratches.
The rubber and sponge washers will help prevent surface damage
due to their softness but will not evenly distribute the forces
as metal washers do. Most of these specialty washers
come with an adhesive option which is useful in applications where washer
slippage
is not acceptable. I'm now going to show you how to configure
a washer on Misumi's website. Washers fall under the product group
Automation Components. Upon entering the automation components section,
you can go to the Adjusting, Fastening, and Magnet section
to access our washers and collars.
From here you'll need to determine whether you want to use a metal
or a resin washer or a collar. We're going to choose a metal washer.
From here we have to choose which shape or type
of washer we would like. We are going to choose the configurable type.
We are now left with two options; we're going to choose the
Standard Class/Precision Class type.
You are now at our configurator. On the left, you're able to choose your
materials
and your dimensions. Let's start configuring. We're going to choose
1045 carbon steel, black oxide coating,
precision grade, we'll have an ID
of 5, an OD
of 19.5, and a thickness
of 5.1.
We now have a completed part number at the top, and you are able to access
our price check, which will give you an instant price.
You are also able to see the days to ship
via the Days to Ship tab, which will show you
the days to ship for each part type. Thank you,
and we hope you enjoyed today's webinar. All of Misumi's configurable components
and one million products are available
at www.misumiusa.com.
If you are new to Misumi, register for access to CAD downloads,
online formal quotes and orders, and manage all of your account histories.
For first-time companies purchasing you can receive thirty percent off.
Full support is also available; technical help at engineering@misumiusa.com,
customer service at inquire@misumiusa.com,
and your local account manager at sales@misumiusa.com.
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Thank you again.