Milling Tool Holders

Milling tool holders, stocked in Canada. CAT40, BT40, SK40 and NBT30 tapers in ER collet chucks, Weldon end mill holders, shell and face mill arbors and power milling chucks — prices and stock on every product page, order without asking for a quote.

Two numbers decide which holder you want. Gage length sets how far the assembly stands out of the spindle, and deflection grows with the cube of that distance — so the shortest holder that reaches is the cheapest rigidity you can buy. Runout decides whether all the flutes on your cutter share the work or one of them does most of it and fails first.

Retention knobs are ordered separately and have to match the machine, not just the taper.

Total found: 23

Only new

Only in stock

Holder Style: ER Collet Chuck

ER25 Collet Chuck, CAT40, 2.5" Gage Length

ER25T40iH2-5In stock

CA$85.47

excl. taxes

ER32 Collet Chuck, CAT40, 4" Gage Length

ER32T40iH4In stock

CA$92.61

excl. taxes

ER32 Collet Chuck, CAT40, 6" Gage Length

ER32T40iH6Running out of stock

CA$114.72

excl. taxes

ER32 Collet Chuck, CAT40, 2.75" Gage Length

ER32T40iH2-75Running out of stock

CA$89.16

excl. taxes

ER16 Collet Chuck, BT30, 2.76" Gage Length

ER16B30H70-ARunning out of stock

CA$63.31

excl. taxes

ER25 Collet Chuck, BT30, 2.76" Gage Length

ER25B30H70Running out of stock

CA$64.60

excl. taxes

ER32 Collet Chuck, BT30, 2.76" Gage Length

ER32B30H70Running out of stock

CA$64.60

excl. taxes

ER16 Collet Chuck, BT30, 3.94" Gage Length

ER16B30H100-ARunning out of stock

CA$67.68

excl. taxes

ER32 Collet Chuck, BT40, 2.76" Gage Length

ER32B40H70Running out of stock

CA$71.04

excl. taxes

ER32 Collet Chuck, BT30, 3.94" Gage Length

ER32B30H100Running out of stock

CA$71.51

excl. taxes

ER25 Collet Chuck, BT30, 3.94" Gage Length

ER25B30H100Running out of stock

CA$73.30

excl. taxes

ER16 Collet Chuck, CAT40, 2.5" Gage Length

ER16T40iH2-5-ARunning out of stock

CA$81.78

excl. taxes

ER16 Collet Chuck, CAT40, 4" Gage Length

ER16T40iH4-ARunning out of stock

CA$85.47

excl. taxes

ER25 Collet Chuck, CAT40, 4" Gage Length

ER25T40iH4Running out of stock

CA$89.16

excl. taxes

ER32 Collet Chuck, CAT50, 4" Gage Length

ER32T50iH4Running out of stock

CA$193.76

excl. taxes

ER32 Collet Chuck, CAT50, 6" Gage Length

ER32T50iH6Running out of stock

CA$223.93

excl. taxes

ER32 Collet Chuck, CAT50, 8" Gage Length

ER32T50iH8Running out of stock

CA$260.59

excl. taxes

ER16 Collet Chuck, NBT30, 2.36" Gage Length

ER16NB30H60-AMade to order

CA$73.99

excl. taxes

ER25 Collet Chuck, NBT30, 2.36" Gage Length

ER25NB30H60Made to order

CA$76.51

excl. taxes

ER32 Collet Chuck, NBT30, 2.36" Gage Length

ER32NB30H60Made to order

CA$78.58

excl. taxes

ER16 Collet Chuck, SK40, 2.76" Gage Length

ER16K40H70Archive

ER25 Collet Chuck, SK40, 2.76" Gage Length

ER25K40H70Archive

ER32 Collet Chuck, SK40, 2.76" Gage Length

ER32K40H70Archive

Milling Tool Holders

The holder is the part between your spindle and your cutter, and it decides more about the cut than most people expect. Runout, rigidity, how deep you can reach and whether the tool stays where you put it are all properties of the holder, not the end mill. A good cutter in a poor holder behaves like a poor cutter.

The range below covers CAT40, BT40, SK40 and NBT30 tapers in ER collet chucks, Weldon end mill holders, shell and face mill arbors and power milling chucks. Clamping range, gage length and balancing grade are on each product page.

Runout is paid for by the cutting tool

If the cutter does not run true, its flutes do not share the work. One edge takes a thicker chip than the others, wears faster, and the tool fails when that edge fails - not when the average edge is worn out. Runout does not shorten tool life a little; it shortens it in proportion to how unevenly the load is spread.

The runout you measure at the cutting edge is a stack: the spindle taper, the holder taper, the bore or collet that grips the shank, and the shank itself. Each part contributes, and they can add up or partly cancel depending on how the holder happens to seat. That is why the number worth knowing is the one measured at the tool, in your spindle - not the tolerance printed for the holder on its own.

Two practical consequences. Keep the taper and the spindle bore clean, because a chip trapped in the taper is worth more runout than any tolerance difference between holders. And indicate a new holder once with a test bar or a ground shank so you know what you actually have.

Gage length: the cheapest rigidity you can buy

Gage length is the distance from the spindle face to the nose of the holder, and it is in the name of every holder we sell for a reason. It sets how far the whole assembly stands out of the spindle, and deflection grows with the cube of that distance.

The practical rule is short: use the shortest holder that reaches the feature. Doubling the reach does not double deflection, it multiplies it by eight. A long holder chosen for convenience, when a short one would have cleared the fixture, is one of the most common reasons a cut chatters at parameters that ought to work.

Where a deep pocket genuinely needs the length, a slim-nose holder - a shrink-fit or a slender hydraulic chuck - gets in without the bulk of a collet nut, which is often what forced the long holder in the first place.

Clamping styles and what each is for

Every clamping style is a trade between grip, runout, flexibility and price. There is no best one.

ER collet chuck. The general-purpose holder. One chuck covers a whole range of shank diameters by swapping collets, which is why most shops own more of these than anything else. Runout and grip are moderate and depend heavily on collet condition. This is the default unless something specific pushes you off it.

Milling Tool Holders

Runout is paid for by the cutting tool

Gage length: the cheapest rigidity you can buy

Clamping styles and what each is for

Every clamping style is a trade between grip, runout, flexibility and price. There is no best one.

Milling Tool Holders

Milling Tool Holders

Runout is paid for by the cutting tool

Gage length: the cheapest rigidity you can buy

Clamping styles and what each is for

Milling Tool Holders

Runout is paid for by the cutting tool

Gage length: the cheapest rigidity you can buy

Clamping styles and what each is for

Getting the taper right

Retention knobs are separate, and they belong to the machine

Balancing

Buying Milling Tool Holders from CNCmarket

Frequently Asked Questions