hS = 4,0mm hS = 7,0mmhS = 5,5mm

hS =13,0mm hS =15,0mm

hS = 8,5mm

hS =10,0mm hS =11,5mm

The KEIL undercut anchor, for invisible attachment of thin panels, is manufactured from stainless steel. Its geometry, matched to the KEIL undercut hole, applies maximum loads to the panels in an optimum manner.

This geometry ensures stress-free attachment in all commonly used panel materials from 6 mm thick.

Depending on panel thickness or carrying capacity required, different insertion depths (hS ) are available. The KEIL undercut anchor is designed in such a way that it withstands a greater load than just the weight of the panel.

The KEIL undercut anchor offers major benefi ts due to the high installation integrity. The anchor is placed quickly, easily and safely at a controlled depth for all panel thicknesses in an optimum installation by using matching KEIL system components: anchor, panel bracket and KEIL locking screw with integral locking mechanism.

Only two parts (anchor sleeve and screw) are required for safe attachment.

FastenersUndercut anchors

hS = Insertion depthOther dimensions on request.

Facade panel

KEIL Undercut anchor

KEIL Locking screw

Panel bracket

Backing

Additional screw-in parts for the KEIL undercut anchor provide individually tailored connection options, such as

Connection to a support structure Connection to a cassette system Attachment of soffi t panels with internal angles Direct attachment to the wall via fork anchors or plug-in anchors. Attachment of countertops, furniture, grave surrounds or natural stone radiators.

h

h Sx A

x Z

D1= Ø 7

D2 ≥ Ø 9

Tipo I l l I l l IV I l l

BB 3

BA 2

AA 1*

AB 11

*

2

BC 2*

2

BD 3*

2

BE 21

*

2

BF 31

*3

BG 2*

3

BH 3*

BHH 33 3

*

4

BI 2*

4

BJ 3*

1 4

BK 2*

BL41

3**

AC 1*

Tipo I l l I l l

III

DA 1

CB 5

CA 4

2DC

1 11 2

2DB 1 2

CC2

4*

CD2

5*

CE2

41

*

CEE22

41 1

*

CF1 2

5*

CG3

4*

CH3

5*

CI4

4*

CJ4

5*

CK41

4*

CL1 4

5*

l

ll 1

ll 2

ll 3

ll 4

ll 5

lll 1

lll 2

lll 3

lll 4

lV 1

D1 = hole diameter (7 mm)D2 = undercut diameter (9 mm)h = panel thickness (from 6 mm)hS = insertion depth of undercut anchor (tD)xA = anchor hex head (3 mm)xZ = thickness of panel bracket (clamping thickness)

Hole geometry

Type overview

FastenersUndercut anchors

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Type

Anchor

Screws

Threaded pin

Socket grub screw

Socket stud bolt

Washers, spring washers

Hex sleeves

Locking sleeves

Hex retaining sleeve

Forked bolts

Types marked with a * can be combined with Type Number III/5. This washer is used to compensate tolerances of the panel thickness.

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1

2

3

4

5

The undercut holes on the back of the facade panels must be made using KEIL System tools under workshop conditions.

The KEIL System tools comprise the KEIL facade drill bit, the KEIL drill head and the undercutting and drilling machine (e.g. KEIL manual drill, KEIL bench drill or automatic drilling machine with KEIL drill head).

The undercut hole is produced in one step (cylindrical drilling [1] and undercutting [2]).

Correct installation of the undercut anchor is possible only if a precisely undercut hole exists [3].The hole geometry is regularly monitored with the KEIL gauge matching the insertion depth of the anchor. The hole depth is set by means of this gauge, and all major hole dimensions can be checked effi ciently with it.

The undercut anchor consists of an anchor sleeve and its hex screw.

Hole, anchor sleeve and screw length have to be matched to the hole depth required and to the panel bracket chosen. Only the use of matching components results in quick, simple and safe installation.

The anchor sleeve, which is compressed in the lower end, is placed in the hole with the specifi ed panel bracket [4].

The screw is screwed in while exerting slight pressure on the panel bracket (to fi x the anchor) [5]. The locking mechanism of the screw cuts into the panel bracket to secure it.

The panel bracket forms a rigid unit with the KEIL facade anchor for this type of installation.

The anchor sleeve is expanded to its original dimension by inserting the screw to a controlled depth, so that the sleeve sits snugly against the undercut section of the hole in the facade panel. After installation, the anchor sits stress-free in the undercut hole (i.e. the bracket can still be rotated with a certain amount of effort).

Drilling and Undercutting

Assembly

FastenersUndercut anchors

Installation instructions

D S

Ü = S - D

Ü

Correct functioning is only guaranteed if all components of the KEIL undercut facade system are used. Expansion of the anchor sleeve controlled by insertion depth requires precise matching of the screw length to the anchor and panel bracket by KEIL. Production of the undercut holes and installation should be carried out under workshop conditions. Workshop conditions in this sense can also be created on site.The dimensions of the undercut hole are to be monitored in accordance with the regulations in force. The standards, guidelines and relevant regulations applicable to design and use must be observed.

CAUTION:Before fi nal installation, it must be checked whether the screwed-in part is fl ush with the anchor sleeve at the front and whether the correct installation tool is being used, by means of a test assembly.

Notes on anchor installation

Safety Information

Anchor sleeves and locking screws for specifi ed clamping thicknessesIf the appropriate screw is used for a defi ned clamping thickness, the insertion depth is always correct! Installation is quick, easy and safe in this case. Similarly, the system ensures that the precise insertion depth is guaranteed for KEIL plug-in anchors. The screwed-in part must be fl ush with the anchor sleeve at the front.

Installation instructions

Undercut anchorsFasteners

Anchor sleeves and grub screws for variable clamping thicknessesThe correct insertion depth is guaranteed if the appropriate installation tool, the KEIL screw driver, is used and the installation steps described below are followed. The appropriate projection Ü is automatically obtained.

Installation steps:1. Place grub screw in screw driver.2. Hold anchor sleeve with open-ended spanner and screw in grub screw with screw driver to stop. - Release screw driver handle.3. Check dimension Ü4. Screw on panel bracket with nut.

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FastenersPlug-In Anchor/Fork Anchor

without support structureDrilling - Grouting - Insulating

The KEIL plug-in anchor and the KEIL fork anchor in conjunction with the KEIL undercut anchor make it possible to attach natural stone panels without a support structure.

The support bolts are attached to the panel back with the undercut anchor. The holes in the substrate to which the panels are fi tted are fi lled with a permissible mortar.

The threaded rods on the facade panel are fi tted into the fi lled holes. The facade panel is aligned and fi xed. After the correct setting time, depending on temperature, has passed, a safe, stress-free bond has been produced.

Plug-in anchor

Fork anchor

With/without insulation Subsequent replacement of individual panels possible High safety due to optimum load distribution with both systems

The KEIL plug-in anchor facilitates the tight axial connection of undercut anchor and threaded bolt. It is used where facade panels need not be removed again after fixing, e.g. to replace damaged panels, in precast reinforced concrete elements, for internal fi ttings.

The KEIL fork anchor facilitates the safe, detachable connection of natural stone facade panels and the substrate. It is used, for example, when the panel has to be removed again, for example to fi t insulation or to check the anchoring. Fork bolt and undercut anchor are not directly joined. The fork plate between them makes disassembly of the facade panel possible.

5

2 3

6

7

4

1

Fork anchor

Installation steps for fork anchor

Drill and undercut facade panels using the KEIL undercut facade drill bit.Fit anchor by tightening the screw.

Insert fork installation bracket at fork.

Push panel into holes fi lled with mortar.Fix panel and let mortar set.

Insert elastic at the top of the panel.

Installation aids: Remove elastic, turn installation angle brackets by 90° and remove.

Place fork bolt behind the anchor with the hex screw.

Insert temporary installation angle brackets.Drill and clean holes for fork anchor/plug-in anchor.Fill holes with mortar.

The facade pane l can be removed to fi t insulation or check the anchor points.

without support structureFasteners

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Drilling technologyMachines

Manual drills

For use in workshop and on site (total weight 90 kg approx.). Roller conveyor 1,500 x 600 mm with pneumatic panel fi xing together with KS DV or KS HV manual drill.

Excel lent handl ing, s imple operation, fast change to different hole separations.

After setting the insertion depth hS, panels of different thickness can be drilled without further adjustment.The depth of the undercut hole may be constant either to the front or rear of the panel.

The manual drills are used for mobile drilling and undercutting of small batches, infi ll and special size panels. This handy machine is placed on the facade panel at any point and is rigidly connected to the panel via the vacuum foot or clamping foot. Precise positioning can be carried out via stop rails.

The manual drill can be supplied for drilling with the KEIL diamond facade drill bit or as a dry drilling machine for the KEIL carbide facade drill bit.

The simple handling is supported by the low weight of the manual machine and makes its use on site possible. Panels of any size or weight are drilled effi ciently and undercut precisely with it.

Machine Facade drill bits ConnectorKS DV Diamond Vacuum footKS HV Carbide Vacuum footKS DK Diamond Clamping footKS HK Carbide Clamping foot

KRT drilling table with rollers

Excellent handling of panels to be drilled

Materials such as natural stone, ceramics, HPL, fi bre cement, glass etc. can be processed (max. panel size, for example, 3,500 x 1,800 mm).

E f f i c i e n t w o r k i n g d u e t o simultaneous processing of 2 panels – while panel 1 is drilled fully automatically, panel 2 can be checked and positioned. Simple programming of drilling schematics via PC.

F o r a u t o m a t e d d r i l l i n g a n d u n d e r c u t t i n g , K E I L o f f e r s automatic drilling machines with KEIL undercutting technology in cooperation with well-known machine manufacturers. Individual customer requirements regarding computer support, panel size, automated panel transport etc. form the basis of the design of your machine.

Automatic drilling machines

Example: KEIL undercutting unit, attached to an Arbes drilling machine.

Example: KEIL undercutting unit, attached to a Cobalm drilling machine.

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Drilling technologyAutomatic drilling machines

Undercutting Unit for automatic drilling machines

The KEIL undercutting unit for drilling machines is the optimum automated drill unit for drilling and undercutting. Almost all available drilling/milling machines can be retrofi tted with this. The undercutting unit uses diamond or carbide tipped facade drill bits, depending on which material is to be worked. For undercutting, the drill head is pneumatically defl ected after reaching the pre-selected drilling depth. If the diamond facade drill bit is used, water is applied through the centre of the spindle. The carriage of the machine supports the KEIL undercutting unit with frequency-controlled motor. Thus the motor speed can be selected for drilling with the carbide facade drill bit (approx. 1,500 rpm) or for drilling with the diamond facade drill bit (approx. 7,000 rpm).

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Drilling technologyType ”P“ drill head

Pneumatic drill head

Connection requirements

Pneumatic drill head withfacade drill bit andR ½” chuckArticle No. 7.581.000.023

Type “P“ drill head data

At the heart of all KEIL drilling machines is the KEIL drill head.

The cylindrical hole and the undercut are quickly and precisely produced with this drill head together with the facade drill bit.

The drill head can also be attached to your existing automatic drilling or milling machine. (Fitting as per customer requirement).

Various mating conditions must be met to be able to fi t the KEIL P drill head with pneumatic defl ection to existing machines.

The spindle speed must be about 6,000-7,000 rpm for water-cooled drilling with the diamond facade drill bit and about 2,000 rpm for drilling with the carbide drill bit.The facade drill bit must be seated free from play and the spindle must be running faultlessly to guarantee precise undercuts and long life of the drill bit. Locking must be possible in the different feed directions.

When drilling with the diamond facade drill bit, the water is supplied through the drill spindle (water pressure > 4 bar). It is advantageous to use a water fi lter to avoid any water failure which could lead to the diamond plate detaching.

A circulating water supply with added cooling lubricant provides good corrosion protection and has a positive effect on the optimum life of the facade drill bit.The customer must: Screw in the drill head or insert it into the collet. Fit locking for drill head.

Depending on machine, control of the drill head can be mechanical or under program control. For mechanical control, a KEIL pneumatic unit is attached/installed which is controlled by a limit switch which starts the undercutting process.

Pneumatic R ½“ screw connection Water supply through spindle

A B

4

6

Schnitt A - B

33

1

90°

1

3

1

3

Cylindrical hole: Switch on cooling water. (Always drill with water as a matter of principle.) If drilling is carried out without water, this can result in detaching of the diamond or increased wear of the sealing rings in the fl ushing head.) Switch on drilling machine. Drill to the required depth (to the depth stop set).

Undercutting: The drill is held at the depth stop and undercutting is carried out by actuating the drill head with compressed air (approx. 6 bar, depending on material). Depending on material, the undercut is completed in about 3-5 seconds. Once pressure is released, the drill head returns automatically into the starting position (cylindrical hole). Remove drill bit from hole.

Drilling technologyType ”P“ drill head

Installation Instructions

Function

Drilling and Undercutting

Replacing undercutting diamond facade drill bit

Installation Steps

The drill head is fi rmly screwed into place. The brass bell [4] must be secured against rotation. Connect compressed air.

Push compression lock washer [1] in direction of arrow and turn by 90°. Pull off compression lock washer [1] and compression spring. Pull out both cross bolts [3]. Push brass bell [4] into position A-B. Take out facade drill bit. Also replace sealing ring [6], if required. A new facade drill bit is installed in the reverse order.

To produce undercut holes matching the undercut anchor being used, drilling is carried out with facade drill bit and drill head. The drill head makes it possible to produce the cylindrical hole and the undercut with one tool quickly and precisely in one step. The facade drill bit is defl ected with compressed air.

Maintenance information

After operation, clean drill head and carefully spray with corrosion protection agent (creep oil) from underneath. Only use fi ltered water, preferably with anti-corrosion agent.

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Tender textsSpecification

Item Quantity Object Price per item€

Total price€

Facade CladdingSupply and installation of facade cladding of ............................. by ........................, see separate sheet for address, colour ................., ................. mm thick, the panels to be cut cleanly to size according to the installation guidelines and to be attached to support structure, Item ....................., according to the structural calculations.

Installation of the .................. panels to be invisible and stress-free in all directions so that dimensional changes are allowed for. For this purpose, brackets which are adjustable at the upper end and fi xed brackets with slip at all other points are installed on the rear in accordance with Item .............

To prevent displacement of the panels, a locking facility has to be provided at the top at one bracket.

Invisible attachment of the brackets on the rear of the ............... panels with KEIL undercut anchors of KEIL Werkzeugfabrik.

Net Total

See also standard specifi cation for area 038 + 502.

Excerpts

m2

Im Auel 42D-51766 EngelskirchenTel: +49 (0)2263 807-0Fax: +49 (0)2263 807-333E-Mail: mail@keil-werkzeuge.comInternet: www.keil-werkzeuge.com

KEIL Werkzeugfabrik Karl Eischeid GmbH

The undercut holes are drilled and undercut with the appropriate KEIL tools on the back of the ............... panels according to fi xed drawings, by means of stops on the drilling equipment or by means of automatic drilling machines O workshop production O on-site production

The KEIL undercut anchor is inserted into the prepared undercut hole with brackets suitable for the support structure and is expanded by screwing the screw into the undercut and simultaneously fi xing the bracket to the rear of the panel.

The undercut anchor sits with a positive fi t and free from stress. The calculation of stability (structural data) is based on the calculated values of the test certifi cate or the data of the general building approval.The installation instructions of the fi rm of KEIL have to be observed and followed precisely.

Im Auel 42D-51766 EngelskirchenTel: +49 (0)2263 807-0Fax: +49 (0)2263 807-333E-Mail: mail@keil-werkzeuge.comInternet: www.keil-werkzeuge.com

KEIL Werkzeugfabrik Karl Eischeid GmbH

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Tender textsSpecification

Item Quantity Object Price per item€

Total price€

Net Total

See also standard specifi cation for area 038 + 502.

Excerpts

BB

LL

t

FastenersSoffit Angle

KEIL provides a soffi t panel attachment for the installation of soffi t panels to main facade panels with the KEIL undercut anchor. This type of attachment has been developed from the point of view of precise and fast installation and particularly easy handling.

Attachement of soffi t panels

Place soffi t angle on the drilled facade panel. Insert anchor with screw and serrated washer through the slotted hole into the undercut hole and tighten. Alternatively install threaded pin and locking nut.

Installation of soffi t panels

Installation is quick, simple and safe as the system consists only of an aluminium soffi t angle and a serrated locking screw with undercut anchor.

The patented soffi t angle, designed for the most commonly used soffi t sizes, offers the greatest possible adjustment and preliminary fi xing in both directions.

Optimum load application into the facade panel is ensured as the faces of the undercut anchor provide contact over the whole area. The high support forces resulting from this have been confi rmed repeatedly in tests by different research and testing institutes.

The high installation safety is also shown by the fact that the undercut anchor never pushes through to the front of the panel. Thus, even thin facade panels are attached safely and with a high load strength.

You can also use the KEIL KSDV manual drill with vacuum foot to drill the appropriate undercut holes. With a cost-effective add-on, this machine becomes a stationary drilling machine with roller table for soffi t panels.

General building approval provides the legal basis.

Open and closed joints are possible.

Structural proof available for different soffi t panels and main panels with regard to length, width and thickness.

Highest safety due to mechanical attachment in undercut hole.

Simple and fast installation independent of the weather.

Even friable materials (e.g. sandstone) or for extremely large and heavy soffi t panels, KEIL offers undercut anchors with the larger diameters and insertion depths required.The increased load application area provides even higher breakage loads.

Thus large soffi t panels, too, are attached with a high safety factor.

Drilling and undercutting is carried out with the existing, proven KEIL drilling technology and the machines based on it.

Independent of the material

Fasteners

Advantages in overview

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Soffit Angle

▼

▼

▼

▼

h S m

ax

Undercut facade drill bit

Drilling technologyFacade drill bits

Diamond Facade Drill Bit Carbide Facade Drill Bit

Application For all „hard“ materials, such as ceramics, fine stoneware, natural stone, glass, artifi cial stone. Cooling takes place through the centre of the facade drill bit.

For facade panels of fibre cement, laminated materials (HPL), plastics or certain artifi cial and natural stones, for example.

Drill tip Diamond CarbideDrilling method Wet drilling Dry drillingHole depth up to hS = 15 mmdia. cylindrical 7 mmdia. undercut 9 mm

The KEIL facade dril l bit for dril l ing and undercutting to match the KEIL undercut anchor can be supplied in different versions.

Diamond or carbide facade drill bits are used depending on the panel material to be drilled.

Optimised small diameters with a large undercut result in minimum drilling time and maximum tool life.

The KEIL drilling technology guarantees optimum short drilling times, long tool life and a precise hole geometry.

The KEIL facade drill bit is placed in the KEIL drill head.

dia. 7 m

m

0-0,

3 m

m

Monitoring – checking the gauge:

The undercut diameter of the gauge ist monitored by means of the sizing hole in the feeler gauge

Place bottom part of gauge into sizing hole of feeler gauge.

Insert bolt to stop.

If the gauge can now be pulled out of the hole, it must be replaced.

Application

Place bottom part of gauge into the undercut hole.

Insert bolt to stop.

The hole is OK if the bolt can be completely pushed to bottom part.

Pull out bolt

Push feeler gauge between panel and bottom part of gauge.

The hole is OK if the bolt now cannot be pushed to the bottom part.

Correct hole depth, if required.

Gauge for checking the drilled hole

Inspection of undercut hole

The gauge is used to inspect the hole. With it, all major dimensions of the hole are checked, the hole depth is set and the life of the drill bit monitored.Each KEIL facade anchor has a matching gauge with feeler gauge.

BoltGauge with bolt inserted

Bottom part of gauge

Facade panel

Feeler gauge 0,4 mm

Sizing hole

Drilling technologyGauge

Gaugefor undercut holes

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