Internal use only 1

Technical Sales Guide

MQL Shrinkfit

holders

Release for sales: 04-2017

Publication: SN2017-2

Internal use only 2

Internal use only 3

1 Contents

2 Executive summary / Introduction .................................................................................................. 4

2.1 What is MQL? ......................................................................................................................... 4

2.2 Advantages of MQL ................................................................................................................ 4

2.3 Requirements to implement MQL ........................................................................................... 4

2.4 MQL1 and MQL2 ................................................................................................................... 5

3 Background ..................................................................................................................................... 6

3.1 History ..................................................................................................................................... 6

3.2 Market trends ........................................................................................................................... 6

3.3 Potential ................................................................................................................................... 6

4 EPB 5403/EPB 5403M/EPB 5403M1/EPB 5403M2 ...................................................................... 7

4.1 Tool holders: range summary and delivery content ................................................................ 7

4.2 EPB 5403 DIN type Shrinkfit holders ..................................................................................... 8

4.3 EPB 5403M: DIN type Shrinkfit holders, designed for MQL ................................................ 9

4.4 EPB 5403M1: DIN type Shrinkfit holders, equipped for MQL1 ............................................ 9

4.5 EPB 5403M2: DIN type Shrinkfit holders, equipped for MQL2 ............................................ 9

5 Key codes ...................................................................................................................................... 10

6 Tool holders and accessories for MQL1 ....................................................................................... 11

6.1 Selection of accessories for MQL1 ....................................................................................... 11

6.1.1 Coolant tube E930x… ................................................................................................... 11

6.1.2 Stop screw 19MQL1xxx ................................................................................................ 11

6.2 Tool holders: EPB 5403M or EPB 5403M1 .......................................................................... 11

7 Tool holders and accessories for MQL2 ....................................................................................... 12

7.1 Selection of accessories for MQL2 ....................................................................................... 12

7.1.1 Advice: refer to the Machining Navigator ..................................................................... 12

7.1.2 Coolant tube 20E930xM2xxx ........................................................................................ 13

7.1.3 Stop screw 19MQL2xxx ................................................................................................ 13

7.1.4 Selection of MQL2 accessories: principle ..................................................................... 14

7.2 Tool holders: EPB 5403M or EPB 5403M2 .......................................................................... 16

8 Transmittable torque to the tool shank and Max RPM .................................................................. 16

9 FAQ ............................................................................................................................................... 17

9.1 What is the difference between an EPB 5603 and an EPB 5403 holder? .............................. 17

9.2 Can I use an EPB 5603 or an EPB 5403 Shrinkfit holders for MQL? .................................. 17

9.3 What does the transformation of an EPB 5403 into an MQL holder consists in? ................. 17

9.4 Can DIN, BT, CAT holders be equipped for MQL? ............................................................. 17

9.5 What are the main differences between MQL1 and MQL2? ................................................ 18

Internal use only 4

2 Executive summary / Introduction

2.1 What is MQL?

MQL stands for “Minimum Quantity Lubrication”. This ‘near-dry” coolant solution consists in a mix

of air and oil, generating sort of an emulsion. It is an alternative to flood coolant systems. MQL coats

the interface “cutting edge/workpiece” with a thin film of lubricant and prevents heat build up through

friction reduction.

2.2 Advantages of MQL

This solution significantly reduces the volume of coolant used to lubricate machining operations:

• overall coolant costs reduced,

• keeps the machine environment and workpiece clean, reducing the need to clean workpieces,

• reduces the need for recycling coolant floods, as the volume used is very low compared to

conventional flood coolants and as it is mostly consumed in the cutting process,

• makes the recycling of chips easier, as no cleaning is needed,

• reduces the exposition of operators to chemicals.

2.3 Requirements to implement MQL

MQL needs a specific equipment to produce and deliver the emulsion:

- machine equipped with a MQL full equipment,

- suitable tool holders, equipped with specific coolant tubes and stop screws.

- tools with specific coolant channels and tapered tool shank designed according to standard

DIN 69090-3.

The standard DIN 69090-3 defines specific requirements for MQL1 standard holders, accessories and

tool shank shapes.

Internal use only 5

2.4 MQL1 and MQL2

MQL exists in 2 versions:

- MQL1: the ‘air and oil’ mix is produced before entering the spindle and delivered to the tool through

one channel (hence MQL1) that goes through the spindle, the tool holder and the tool.

HSK-A63: Conventional coolant tubes and MQL1 stop screws are needed.

HSK-A100: Specific MQL1 coolant tubes and MQL1 stop screws are needed.

- MQL2: the ‘air and oil’ mix is produced in the tool holder; The air and the oil are delivered through

2 distinct channels (hence MQL2) and are mixed in a chamber, in the MQL2 coolant tube. MQL2

coolant tubes, featuring a connecting pipe, and MQL2 stop screws are needed.

MQL1 COOLANT

SUPPLY

Oil and air mixture

externally

One channel

Oil + Air

Rotary

union Spindle

MQL Shrinkfit

holder

Stop

screw

MQL1

Coolant tube

MQL1

MQL2 COOLANT

SUPPLY

Oil and air supply through

2 independent channels

Oil Air

Rotary

union Spindle

MQL Shrinkfit

holder

Stop

screw

MQL2

Coolant tube

MQL2

Mixing chamber

Internal use only 6

3 Background

3.1 History

MQL exists since 1990 and has grown mostly in the automotive industry. It is now growing in the

aeronautic industry.

3.2 Market trends

The machining trend is in some areas moving in direction of dry machining, completely dry is not

always possible that’s the reason of using MQL.

The market is slowly growing nevertheless there is a clear direction started by automotive industry

now overlapping in the aerospace application.

We are losing market share against competitors having these products (mainly Guhring, Mapal …).

3.3 Potential

Even though competitors are well installed in the automotive industry, Seco is well positioned in the

aerospace industry, where the demand for MQL solutions is growing.

In a first stage, Seco will offer a range of MQL1 and MQL2 tool holders only. On the long run, Seco is

aiming at offering full MQL solutions (tool holders and tools).

The potential for MQL solutions is probably around 10% of the current sales of equivalent

conventional Shrinkfit holders.

Internal use only 7

4 EPB 5403/EPB 5403M/EPB 5403M1/EPB 5403M2

4.1 Tool holders: range summary and delivery content

The range will consist of three “MQL” types, declined from conventional DIN type Shrinkfit holders

(according to standard DIN 69882-8):

• EPB 5403/EPB 5603: Shrinkfit holders, not adapted to MQL (according to standard DIN

69882-8)

• “EPB 5403M”: Shrinkfit holders designed for MQL1 and 2,

delivered without MQL accessories (according to standard

DIN 69090-3)

• “EPB 5403M1”: Shrinkfit holders ready for MQL1, delivered

with MQL accessories mounted (according to standard DIN

69090-3)

• “EPB 5403M2”: Shrinkfit holders (according to standard

DIN 69090-3), ready for MQL2, delivered with MQL2

accessories mounted

EPB 5603 EPB 5403 EPB 5403M EPB 5403M1 EPB 5403M2

According to standard DIN 69882-8 (Shrinkfit holders) X X

Pre-adapted to MQL X

According to standard DIN 69090-3 (MQL) X X X

Coolant channels according to MQL norm X X X

MQL thread X X X

MQL laser marking X X X

Delivered with a stop end screw (DIN 69882-8) X (spare part) X (spare part)

Mounted with coolant tube for MQL1 No (accessories) X (spare part)

Mounted with a stop end screw for MQL1 No (accessories) X (spare part)

Mounted with coolant tube for MQL2 No (accessories) X (spare part)

Mounted with stop end screw for MQL2 No (accessories) X (spare part)

Delivered with user instructions X X X

Details about the different types are explained further in this document.

Internal use only 8

4.2 EPB 5403 DIN type Shrinkfit holders

Description

Example: E930454030680 (substitution to former E930456030680)

EPB 5403 Shrinkfit holders are very close to our range of EPB 5603 Shrinkfit holders. Both are

according to standard DIN69882-8.

- 100% same external shape,

- 100% same grip length and same transmittable torque.

Minor modifications have been made to the internal coolant channels (diameter modifications,

chamfers...), however, a ”new” EPB 5403 can be substituted to a former EPB 5603, without any

influence on the customer’s process. EPB 5403 can be shrunk on a Shrinkfit device with the same

program as for EPB 5603.

To allow easy transformation of EPB 5403 Shrinkfit holders into MQL holders, the specification of

HSK-A63 and HSK-A100 DIN type Shrinkfit holders have been slightly modified, resulting in the

creation of a new ”sub-family” EPB 5403, very similar to the existing EPB 5603 type.

Note: only HSK-A63 and HSK-A100 EPB 5603 are replaced by EPB 5403 holders. Other tapers

(HSK-A32, HSK-A40, DIN, BT…) remain unchanged.

Examples of changes between EPB 5603 and EPB 5403

E930454030680 E930456030680 Addition of a chamfer at the entrance

of the coolant channel

E9304540312120 E9304560312120 Slight changes in internal dimensions

(coolant channels).

Internal use only 9

4.3 EPB 5403M: DIN type Shrinkfit holders, designed for MQL

Example: E930454030680M (similar to E930454030680, with specific MQL characteristics)

‘M versions’ are DIN type Shrinkfit holders according to the norm DIN

69090-3, adapted for MQL1 and 2.

They are delivered without coolant tube nor stop screw. These accessories

must be ordered separately.

A MQL laser marking is added in their HSK V-flange, to differentiate them

MQL types Shrinkfit holders from DIN type Shrinkfit holders (according to

standard 69882-8). The ‘M’ designation is engraved on the tool holder (eg.

E930454030680M).

4.4 EPB 5403M1: DIN type Shrinkfit holders, equipped for MQL1

Example: E930454030680M1 (similar to E930454030680M,equipped with a MQL1 stop screw and

MQL1 coolant tube)

‘M1 versions’ are DIN type Shrinkfit holders according to the norm DIN

69090-3, designed for MQL1. It is a full solution, composed of a MQL1

toolholder along with suitable MQL1 accessories (coolant tube and stop

screw), mounted on the toolholder when delivered.

Only one combination “tool holder + stop screw + coolant tube” possible per

workpiece side diameter.

A MQL laser marking is added in their HSK V-flange, to differentiate them

MQL types Shrinkfit holders from DIN type Shrinkfit holders (according to standard 69882-8). The

‘M1’ designation is engraved on the tool holder (eg. E930454030680M1).

4.5 EPB 5403M2: DIN type Shrinkfit holders, equipped for MQL2

Example: E930454030680M2-1.9 (similar to E930454030680M,equipped with a MQL2 stop screw

and MQL2 coolant tube)

‘M2 versions’ are DIN type Shrinkfit holders according to the norm DIN 69090-3.

It is a full solution, composed of a toolholder along with suitable MQL2

accessories (coolant tube and stop screw), mounted on the toolholder when

delivered.

Several combinations “tool holder + stop screw + coolant tube” : the selection

is depending on the cutting tool (shank diameter, number and cross-section of

the coolant channels). See §7.1.

A MQL laser marking is added in their HSK V-flange, to differentiate them MQL types Shrinkfit

holders from DIN type Shrinkfit holders (according to standard 69882-8). The ‘M2’ designation is

engraved on the tool holder (eg. E930454030680M2-1.9).

Internal use only 10

5 Key codes

E9304 5403 0680 M1

E9304 5403 0680

E9304=HSK-A63

E9306=HSK-A100

DIN type Shrinkfit holders (same

family as EPB 5603 holders) Workpiece side

diameter Workpiece side

gauge length

E9304 5403 0680 M Designed for MQL1

and MQL2

Equipped for MQL1

(one combinaison « tool

holder +MQL1

accessories » possible)

E9304 5403 0680 M2-1.9

Equipped for MQL2

(several combinations

« tool holder +MQL2

accessories » possible)

External diameter

of the coolant

Tube*

*see explanations in paragraph “Tool holders and accessories for MQL2”

Internal use only 11

6 Tool holders and accessories for MQL1

6.1 Selection of accessories for MQL1

The selection of the appropriate MQL1 coolant tube and stop screw is easy: One possible combination

per tool holders.

6.1.1 Coolant tube E930x…

HSK-A63, MQL1 Shrinkfit holders use a conventional coolant tube 20E9304:

conventional Ø8 internal diameter is suitable for MQL solutions.

HSK-A100, MQL1 Shrinkfit holders use a specific coolant tube 20E9306M1: the

internal diameter is adapted to optimize the MQL flow (tapered from diameter 12

to diameter 8mm).

6.1.2 Stop screw 19MQL1xxx

Stop screw for MQL1 are adapted to MQL tool shank, according to DIN

69090-3.

For each tool shank diameters, 2 stop screws are available:

Short version 19MQL1xxS

Long version 19MQL1xxL

The choice between the short and the long version depends on the gauge length of the tool holder. See

correspondence tables in catalogue pages.

6.2 Tool holders: EPB 5403M or EPB 5403M1

Customers have the possibility to order MQL1 tool holders as:

• EPB 5403M: The appropriate stop screw and coolant tube must be ordered separately.

o already owns MQL1 accessories,

o wants to manage MQL1 accessories separately,

o wants to run test with one holder and several combination of accessories, before investing

in his final equipment.

o Content delivery: E930454031290M

• EPB 5403M1: The tool holder is delivered, assembled with the appropriate stop screw and coolant

tube.

o Easier solution.

o Content delivery: E930654031295M + 19MQL112S + 20E9306M1

Internal use only 12

7 Tool holders and accessories for MQL2

7.1 Selection of accessories for MQL2

An MQL2 solution is built up from a MQL tool holder equipped with MQL2 coolant tube and MQL2

stop screw.

7.1.1 Advice: refer to the Machining Navigator

An appropriate selection of the accessories is required to guaranty an efficient delivery of the coolant

mixture to the cutting edges. This chapter explain you the principle of the selection of accessories for

MQL2.

Note that a table is available in the Machining Navigator to make this selection easier. This table

features a list of tool holders along with coolant tubes and stop screws, and contains a “ADIF1”

attribute providing the section of the MQL coolant channel (see explanations in §7.1.4).

Internal use only 13

7.1.2 Coolant tube 20E930xM2xxx

MQL2 coolant tubes feature a tube, that is fitted in the stop screw to

warranty an optimal delivery of the MQL2 mix to the tool. A variety of

MQL2 coolant tubes is available, with different coolant channels

diameters and different pipe lengths. See more details in §7.1

Code key coolant tubes

7.1.3 Stop screw 19MQL2xxx

A variety of stop screws is available, with different coolant channels

diameters for each tool diameter.

Code key stop screws

Note: the code key by itself does not allow you to select the appropriate stop screw. You must refer to

the table in the machining navigator to match the appropriate coolant tube and stop screw.

20E9304 M2A 01

E9304=HSK-A63

E9306=HSK-A100

Code corresponding to the length

of the pipe

1=short

16=longest

For MQL2

Code corresponding to the internal

diameter of the pipe

A=smallest diameter

D=widest diameter

19MQL2A01

Code corresponding to the tool

shank diameter

1=smallest shank diameter

2=second smallest shank diameter

…

9=widest shank diameter

For MQL2

Code corresponding to the internal

diameter of the pipe

A=Ø2mm C=Ø4.1mm

B=Ø2.9mm D=Ø5.4mm

Internal use only 14

7.1.4 Selection of MQL2 accessories: principle

Basic principle

The selection of the appropriate MQL2 coolant tube and stop screw is based on the tool that is

mounted on the toolholder, and precisely on the dimension and number of coolant channels in the tool.

Step 1: Selection of the appropriate MQL2 coolant tube

To guaranty an optimal MQL flow delivery to the cutting edge, a cross-sectional ratio of 1:1 to 4:1

between the section of the tool coolant channels (Atool) and the section of the coolant tube’s pipe

(Atube) is required.

Atool ≤ Atube ≤ 4 x Atool

If several combinations are possible, it is recommended to privilege the combination with the ratio the

closest to 1:1, to optimize the MQL flow.

BD2 CND Section area ADIF1

1.9 mm 1.6 mm 2.01 mm²

2.8 mm 2.3 mm 4.15 mm² 4.0 mm 3.4 mm 9.08 mm²

5.3 mm 4.6 mm 16.62 mm²

Internal use only 15

Step 2: Selection of the appropriate MQL2 stop screw

Select the stop screw according to:

- the tool shank diameter,

- the selected coolant tube (see above): both the coolant tube and the stop screw must have the same

value for the attribute ADIF1 (referred to as “Atube”).

Four ADIF1 values are available: 2.01 mm², 4.15 mm², 9.08 mm², 16.62 mm².

Beware:

- for coolant tube, ADIF1 (indicated in the catalogue) corresponds to the cross section of the internal

diameter of the pipe of the coolant tube.

- for stop screw, ADIF1 (indicated in the catalogue) correspond to the cross section of the internal

diameter of pipe of the corresponding coolant tube, and NOT to the cross section of the stop screw’s

coolant channel.

CNDcoolant tube (mm) => ADIF1 (mm²)

Internal use only 16

7.2 Tool holders: EPB 5403M or EPB 5403M2

Customers have the possibility to order MQL2 tool holders as:

• EPB 5403M: The appropriate stop screw and coolant tube are meant to be ordered separately.

o Suitable for a customer who:

already owns MQL2 accessories,

wants to manage MQL2 accessories separately,

wants to run test with one holder and several combination of accessories, before

investing in his final equipment.

o Content delivery: E930454031290M

• EPB 5403M2: The tool holder is delivered with the appropriate stop screw and coolant tube.

o Easier solution.

o Content delivery:

E930654031495M2-1.9 (= E930654031495M + 19MQL2A05 +20E9306M2A01)

Transmittable torque and max rpm see Shrinkfit holders EPB 5603/5403.

8 Transmittable torque to the tool shank and Max RPM

The coolant mixture efficiency limits the maximum RPM for holders equipped for MQL1 and MQL2.

Transmittable torque to the tool shank (Nm) are the same for all types of EPB 5603 and EPB 5403

Shrinkfit holders, including MQL versions. Transmittable torque are defined by the standard DIN

69882-8.

Clamp Ø

(mm)

Min static

transmittable

torque (Nm)

DIN 69882-8

Shrinkfit clamping system Shrinkfit clamping

system Max RPM*

EPB 5603/EPB 5403 EPB 5403M1

EPB

5403M2

6 18 45000 16000 40000

8 35 45000 16000 40000

10 65 40000 16000 40000

12 110 40000 16000 40000

14 150 38000 16000 38000

16 200 38000 16000 38000

18 250 35000 16000 35000

20 320 35000 16000 35000

25 500 32000 16000 32000

32 550 30000 16000 30000

* The maximum RPM for holders equipped with this clamping system is often restricted by the

holder’s machine side taper type and size.

Internal use only 17

9 FAQ

9.1 What is the difference between an EPB 5603 and an EPB 5403 holder?

Both are designed according to the standard DIN 69882-8. An EPB 5603 can be directly replaced by

an EPB 5403 (exact same external shape).

EPB 5403 are pre-adapted to make it easier for Seco-EPB to transform them into MQL holders. Some

internal dimensions, not imposed by the standard DIN 69882-8, have directly been adapted to the

“MQL” standard DIN 69090-3.

9.2 Can I use an EPB 5603 or an EPB 5403 Shrinkfit holders for MQL?

EPB 5603/EPB 5403 are not designed according to the standard DIN 69090-3 for MQL. We can not

guaranty EPB 5603/EPB 5403 will work for MQL.

9.3 What does the transformation of an EPB 5403 into an MQL holder consists in?

• Internal modifications are made to the tool holder, eg. thread dimensions, to allow the

mounting of the MQL accessories. In addition to the changes mentioned in §9.1, modifications

are made to make the “EPB 5403M” fully according to the “MQL” standard DIN 69090-3.

• A laser marking is added in the HSK-A flange to differentiate MQL holders from

conventional holders.

• The laser marking of the designation of the product is changed into the final designation of the

product:

o EPB 5403M : eg. E930454030680 into E930454030680M,

o EPB 5403M1 : eg. E930454030680 into E930454030680M1,

o EPB 5403M1 : eg. E930454030680 into E930454030680M2-1.9.

• In the case of EPB 5403M, no stop screw is delivered with the tool holder (the one delivered

with the EPB 5403 is removed from the packaging).

• In the case EPB 5403M1 and EPB 5403M2, required MQL coolant tube and MQL stop screw

are assembled on the holder before delivery.

• MQL user instructions are added to the delivery content.

9.4 Can DIN, BT, CAT holders be equipped for MQL?

The standard DIN 69090-3 for MQL only applies to HSK-A holders.

Market demand for DIN/BT/CAT solutions remain anecdotic and would require an adaptation of the

whole chain “MQL unit/spindle/tool holder/tool.

Internal use only 18

9.5 What are the main differences between MQL1 and MQL2?

Aside the difference of equipment, each technologies has specific advantages:

MQL 1 MQL 2

Possible to change from a conventional coolant system to a

MQL1 system.

Does not allow to switch from a conventional coolant system

to a MQL2 system.

Can be implemented on multi-spindle machines. Very complicated to implement on multi-spindle machines.

The rotational speed influences the quality of the flow (the

flow must be adapted to the speed).

The rotational speed does not influence the quality of the flow

(same flow quality, dependless of the speed).

Modification of the coolant parameters (quantity of coolant,

ratio oil/air…) is very slow. Not convenient when quick tool

changes are necessary.

Fast adaptation to parameter changes. Suitable when quick

tool changes are needed.

Limited volumes/min of coolant can be delivered to the

tool (150ml/min).

Higher volumes/min can be delivered to the tool

(400ml/min).

Pressure 5 bars minimum required. Pressure 4 bars minimum required.

EPB 5403M EPB 5403M1 EPB 5403M2