Dieter Schmid's Fine Tools
FAMAG Bormax prima long Series 1614

FAMAG Bormax prima long Series 1614

The FAMAG Bormax prima long Series 1614 combines the function of a Forstner drill bit and a counterbore.

There are various ways of joining construction timber. One traditional and popular method is the use of bolted connections using threaded bars or bolts, washers and nuts. Standards stipulate the dimension of the washer depending on the choice of the threaded bolt.

If a concealed joint is desired or required by regulations, the washer and nut must be embedded in the wood. The joiner will usually drill a through-hole with an augur drill bit into the wooden beam to correspond to the diameter of the threaded bolt. As a rule, the beam will be softwood or construction timber. To embed the washer/nut the joiner will use a counterbore drill bit. Counterbore drill bits are a type of cylinder head drill bit and differ from classical Forstner or cylinder boring bits in that they do not possess a fixed centring point. Instead they have a locating hole into which a pilot drill bit or guide pin can be inserted.

We offer counterbores with 19 different diameters as standard. The smallest diameter is 20 mm and the largest 120 mm. The locating hole is 8 mm in diameter on counterbores from 20 to 40 mm in diameter and 10 mm on larger counterbores. We offer guide pins 8 to 22 mm in length to fit either of the locating holes. Incidentally, FAMAG always supplies its guide pins slightly undersize. This results in very easy and precise guidance without noticeable friction in the predrilled hole.

Guide pins give perfect guidance during counterboring so that freehand drilling of larger diameters is easier than with a drill bit having a fixed centring point. As an alternative to guide pins there is a choice of pilot drill bits: 8 mm for counterbores up to 40 mm in diameter and 10 mm for drill bits from 45 mm in diameter. Basically, you can insert any wood drill with 8 or 10 mm diameter shank. The advantage of the FAMAG pilot drill bit is that the shank is provided with drive flats for improved power transmission. With a pilot drill bit in position you can drill and counterbore in one operation and save the time spent on a separate predrilling. This tool configuration also lets you drill into a workpiece at a slant.

New on the Bormax 2.0 prima long are the circumference cutters with cooling fins. The spiral grooves significantly reduce friction in the borehole. The Bormax 2.0 prima long will keep a cool head even with heavy-duty use.

Counterbores are often used in larger diameters. The feed force increases with the diameter. Because these tools are used freehand, it is desirable that these forces are reduced as far as possible. This is achieved by the new Bormax 2.0 geometry! On both of the main cutting edges there are mutually offset chip breaker grooves that enable faster and easier boring. This reduces the feed forces substantially. The counterbore drill bit is supplied together with a centring drill bit (as seen in the picture). The depth of the centring drill bit can be set so that it protrudes only a small amount. Alternatively you can mount the pilot drill bit so that it protrudes a significant amount. The further it protrudes, the better the guiding effect; with a powerful cordless drill driver you will be able to drill freehand boreholes in softwood up to 100 mm in diameter!

FAMAG Bormax prima long Series 1614

FAMAG Bormax prima long Series 1614 Note: Supplied with centring drill bit as shown!

Diameter
mm
Shank
mm
Total length
mm
Cutting length
mm
CodePrice
20 13 140 90
Code 324900CartPrice € 69.00
25 13 140 90
Code 324901CartPrice € 72.00
30 13 140 90
Code 324902CartPrice € 79.00
32 13 140 90
Code 324903CartPrice € 84.00
35 13 145 95
Code 324904CartPrice € 85.00
40 13 145 95
Code 324905CartPrice € 89.00
45 13 150 100
Code 324907CartPrice € 97.00
Diameter Shank Total length Cutting length CodePrice
50 13 150 100
Code 324908CartPrice € 99.00
55 13 150 100
Code 324911CartPrice € 102.00
58 13 150 100
Code 324913CartPrice € 109.00
60 13 150 100
Code 324914CartPrice € 112.00
65 13 155 105
Code 324917CartPrice € 129.00
68 13 155 105 Currently not in stock!
Code 324919Cart Price € 138.00
70 13 155 105
Code 324925CartPrice € 139.00
Diameter Shank Total length Cutting length CodePrice
75 13 155 105
Code 324927CartPrice € 165.00
80 13 155 105
Code 324930CartPrice € 167.00
85 13 160 110
Code 324931CartPrice € 199.00
90 13 160 110
Code 324933CartPrice € 209.00

The following drill bits have a 16 mm shank diameter and cannot be mounted in a standard drilling machine fitted with a 13 mm drill chuck. Use only in a drill press, clamp the workpiece!

Diameter
mm
Shank
mm
Total length
mm
Cutting length
mm
CodePrice
95 16 160 110
Code 324935CartPrice € 249.00
100 16 160 110
Code 324936CartPrice € 259.00
110 16 160 110
Code 324938CartPrice € 289.00
120 16 160 110
Code 324939CartPrice € 295.00
Guide Pins for Bormax prima long 20 to 40 mm in diameter Guide Pins for Bormax prima long 20 to 40 mm in diameter
Outside
diameter
mm
Shank
mm
Total
length
mm
Cutting
length
mm
CodePrice
8 8 75 50
Code 324950CartPrice € 16.10
10 8 75 50
Code 324951CartPrice € 16.30
12 8 75 50
Code 324952CartPrice € 17.50
13 8 75 50
Code 324953CartPrice € 17.80
14 8 75 50
Code 324954CartPrice € 17.90
16 8 75 50
Code 324955CartPrice € 18.80
18 8 75 50
Code 324956CartPrice € 19.60
20 8 75 50
Code 324957CartPrice € 20.50
22 8 75 50
Code 324958CartPrice € 23.90
Guide Pins for Bormax prima long 45 to 120 mm in diameter Guide Pins for Bormax prima long 45 to 120 mm in diameter
Outside
diameter
mm
Shank
mm
Total
length
mm
Cutting
length
mm
CodePrice
10 10 75 50
Code 324960CartPrice € 16.10
12 10 75 50
Code 324961CartPrice € 17.50
13 10 75 50
Code 324962CartPrice € 17.70
14 10 75 50
Code 324963CartPrice € 17.90
16 10 75 50
Code 324964CartPrice € 18.80
17 10 75 50
Code 324965CartPrice € 19.70
18 10 75 50
Code 324966CartPrice € 19.80
20 10 75 50
Code 324967CartPrice € 20.50
22 10 75 50
Code 324968CartPrice € 23.90
26 10 75 50
Code 324969CartPrice € 25.50
32 10 75 50
Code 324970CartPrice € 27.50
Centring Drills
Centring Drills

Shank with drive flat for improved power transmission

Centring drill for Bormax prima long
20 to 40 mm in diameter

Drill diameter 3.8 mm
Shank diameter 8 mm
Code 324975CartPrice € 16.20

Centering Drill for Bormax prima long
45 to 120 mm in diameter

Drill diameter 4 mm
Shank diameter 10 mm
Code 324976CartPrice € 16.50
Pilot Drills
Pilot Drills

Shank with drive flat for improved power transmission

Pilot drill for Bormax prima long
20 to 40 mm in diameter

Drill diameter 8 mm
Shank diameter 8 mm
Cutting length 50 mm
Code 324980CartPrice € 16.50

Pilot Drill for Bormax prima long
45 to 120 mm in diameter

Drill diameter 10 mm
Shank diameter 10 mm
Cutting length 50 mm
Code 324981CartPrice € 16.90
Depth Collar for Bormax prima long
Depth Collar for Bormax prima long
40 to 90 mm in diameter
Hole diameter 20 mm
Suitable for Bormax prima long drill bits 40 to 90 mm in diameter.
Why not for other sizes? On the counterbores 40 to 90 mm in diameter, the front section of the shank is widened to 20 mm in diameter.
Code 324985CartPrice € 109.00
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