Mr-Mike said:

Opinions on milling solutions for a 40 Taper Spindle. Thinking for 3/4 inch tool diameter and above I will grab a couple of end mill holders and for smaller stuff an adapter for ER or TG collets. Both of those appeal to me over R8 and since I have no R8 tooling, I have a clean start. I really don't know the pros and cons for the various options. Most of what I will do will be with shank diameters between 3/8 - 1 inch and perhaps a face mill up to 2 inch, if that's relevant (guessing on the face mill).

Your recommendations and opinions are most appreciated!

With competitive price and timely delivery, Ruihan sincerely hope to be your supplier and partner.

Click to expand...

What I did is not necessarily what anyone else would want to do, so "FWIW-not-much"

- First purchases were to get ER-40. I did that for basically EVERYTHING under-roof, even the drillpress. The wide collapse range lets one set of collets cover just about anything, including holding stock in the lathes as well as tools.

Then I try - and try HARD - to..not use it!. Well, yeah, that may sound dumb, but ER is slow to operate picky, picky about uber-clean, and SHOULD be set with a proper torque wrench.

CNC industry change the whole shebang - 40-taper mount in our case. But.. that's done with tool changers working out of a magazine. One needs a LOT of ER (or TG, or SK..) on those 40-taper tails. And TG or SK are often the better choice anyway.

So basically I treat ER as an actually pretty CHEAP fall-back or last-ditch solution. I have ER20 as well. Straight shank and # 2 MT for 10EE TS. But same-again. For use only if I have nothing faster and lower-hassle to use.

Just started adding TG-100. MariTool. Lovely stuff!

These do grip better than ER. One needs twice the collet-count for a TG "set" as ER, given the improved grip comes from half as much collapse range. No big deal. The target isn't "sets" so much as several each in limited-collapse or "on size" selections for specific tasking.

Even so, NO "collet" is my first choice for actual use on any mill.

Weldon-style "side lock" milling cutter holders are my first choice.

They last a long time. They are not terribly costly. One can have "many many" such that a tool STAYS in its own holder.

But then.. I also have side-locks on PDQ-Marlin "VS" adapted to #9 B&S and PDQ-Marlin "S" on 40-taper tails. These are what I like most of all.

Put the master holder in-place. Leave the drawbar alone for a long time. Their side lock holders are "special", of course, but are changed at the nose, drawbar not messed with.

There are other QC options in 40-taper, but PDQ-Marlin needs the least "daylight" to do a tool-swap.

Then, too I have a few 40-taper collets, and the usual suspects as to extenders, MT adapters, face & shell mill holders, and arbours, as MY 40-taper is on the horizontal spindle only. The vertical is # 9 B&S.

If I had to do it all over from an empty tool crib?

Key sizes of side-locks first.

TG-100 MariTool and a "set" next.

More side-locks third, and just keep-on grabbing.

A QC system if/as/when I could find a "deal". 40-taper is actually "quick change", all by itself. See "pull stud", but that ain't on my dance-card for a manual mill in me old age.



And, of course, ER 40 "whenever", because "why not"?

Fill-ins such as MT adapters (I have for #9 B&S as well) thereafter.

2C.. well "many drawers full" worth. Can never have "too many" 40-taper.

What I did is not necessarily what anyone else would want to do, so "FWIW-not-much"- First purchases were to get ER-40. I did that for basically EVERYTHING under-roof, even the drillpress. The wide collapse range lets one set of collets cover just about anything, including holding stock in the lathes as well as tools.Then I try - and try HARD - to... Well, yeah, that may sound dumb, but ER is slow to operate picky, picky about uber-clean, and SHOULD be set with a proper torque wrench.CNC industry change the whole shebang - 40-taper mount in our case. But.. that's done with tool changers working out of a magazine. One needs a LOT of ER (or TG, or SK..) on those 40-taper tails. And TG or SK are often the better choice anyway.So basically I treat ER as an actually pretty CHEAP fall-back or last-ditch solution. I have ER20 as well. Straight shank and # 2 MT for 10EE TS. But same-again. For use only if I have nothing faster and lower-hassle to use.Just started adding TG-100. MariTool. Lovely stuff!These do grip better than ER. One needs twice the collet-count for a TG "set" as ER, given the improved grip comes from half as much collapse range. No big deal. The target isn't "sets" so much as several each in limited-collapse or "on size" selections for specific tasking.Even so, NO "collet" is my first choice for actual use on any mill.Weldon-style "side lock" milling cutter holders are mychoice.They last a long time. They are not terribly costly. One can have "many many" such that a tool STAYS in its own holder.But then.. I also have side-locks on PDQ-Marlin "VS" adapted to #9 B&S and PDQ-Marlin "S" on 40-taper tails. These are what I like most of all.Put the master holder in-place. Leave the drawbar alone for a long time. Their side lock holders are "special", of course, but are changed at the nose, drawbar not messed with.There are other QC options in 40-taper, but PDQ-Marlin needs the least "daylight" to do a tool-swap.Then, too I have a few 40-taper collets, and the usual suspects as to extenders, MT adapters, face & shell mill holders, and arbours, as MY 40-taper is on the horizontal spindle only. The vertical is # 9 B&S.If I had to do it all over from an empty tool crib?Key sizes of side-locks first.TG-100 MariTool and a "set" next.More side-locks third, and just keep-on grabbing.A QC system if/as/when I could find a "deal". 40-taper is actually "quick change", all by itself. See "pull stud", but that ain't on my dance-card for a manual mill in me old age.And, of course, ER 40 "whenever", because "why not"?Fill-ins such as MT adapters (I have for #9 B&S as well) thereafter.2C.. well "many drawers full" worth. Can never have "too many" 40-taper.

CNC Collet Types: 

In the realm of CNC machining, collets play a vital role in securely holding and accurately positioning cutting tools. The selection of the right collet type is crucial for achieving precise and efficient machining results. Ruihan offers a wide variety of CNC collet types.

ER collets, also known as Elastic Retention collets, are widely used in CNC machining. These collets utilize a compression mechanism to grip the tool tightly. They feature a cylindrical body with multiple slits that provide elasticity, allowing the collet to expand and contract to accommodate different tool diameters. ER collets are renowned for their exceptional gripping power, concentricity, and versatility. They are suitable for a wide range of cutting tools, including drills, end mills, reamers, and taps.

OZ collets, also called OZ25 and OZ32 collets, are commonly used in CNC routers and machining centers. These collets feature a unique design with a hexagonal shape and a threaded nut for tool clamping. OZ collets offer excellent concentricity and are specifically designed for high-speed machining applications. They provide reliable gripping power and are often used with router bits, engraving tools, and other similar cutting tools.

R8 collets are widely used in milling machines, especially in the context of manual machining and Bridgeport-style mills. These collets have a taper of 7:24 and a threaded back that allows for quick and secure tool changes. R8 collets are known for their excellent gripping power and concentricity. They are compatible with R8 spindles and are commonly used with end mills, shell mills, and other milling cutters.

The company is the world’s best Tg Collet Dimensions supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

SK collets, also known as SK40 and SK50 collets, are popular in CNC machining centers. These collets feature a steep taper design, ensuring strong and rigid tool clamping. SK collets provide excellent runout accuracy and are suitable for heavy-duty machining operations. They are commonly used with solid carbide end mills, drills, and other cutting tools.

BT collets, short for BT30 and BT40 collets, are widely used in CNC milling machines. These collets have a taper design similar to SK collets but with a different flange configuration. BT collets provide high clamping forces, ensuring reliable tool holding during heavy-duty machining. They are compatible with BT spindles and are commonly used with end mills, drills, and tapping tools.

HSK collets, also known as HSK63 and HSK100 collets, are widely used in high-speed machining applications. These collets feature a hollow shank taper design that allows for efficient coolant flow. HSK collets provide exceptional rigidity, runout accuracy, and tool stability. They are commonly used with high-performance cutting tools, such as high-speed end mills and drills.

Choosing the right CNC collet type is essential for achieving precise and efficient machining results. Whether you require versatility, gripping power, concentricity, or specialized features for high-speed or heavy-duty applications, there is a collet type available to meet your needs. Consider the specific requirements of your machining project, including the type of cutting tools, spindle compatibility, and machining application, to make an informed decision. By selecting the appropriate collet type, you can enhance the performance of your CNC machining operations and achieve superior results.

Get in touch now!

Want more information on Er Collets Dimensions? Feel free to contact us.