www.brammer.bizwww.brammer.biz www.brammer.biz

5

Cut 3 Cut 3 PLUS Cut 5 Cut ALU Cut INOX Cut MZ

To determine the recommended cutting speed [m/min], please proceed as follows: ➊ Select the material group that is to be

processed. ➋ Determine the type of application.

➌ Select the cut. ➍ Establish the cutting speed range.   To determine the recommended rotational speed [RPM], please proceed as follows:

➎ Select the required burr diameter. ➏ The cutting speed range and the burr diam-

eter determine the recommended rotational speed range [RPM].

Recommended rotational speed range

Tungsten carbide burrs

Example: Tungsten carbide burr, cut 3 PLUS Diameter: 12 mm. Coarse machining of non-hardened and non-heat-treated steels. Cutting speed: 450 - 600 m/min Rotational speed: 12.000 - 16.000 RPM

Speed recommendations

➊ Material groups ➋ Application ➌ Cut ➍ Cutting speed

Steel, cast steel

Non-hardened, non-heat treated steels up to 1200 N/mm² (< 38 HRC)

Construction steels, carbon steels, tool steels, non-alloyed steels, case-hardened steels, cast steels

Coarse machining = high stock removal

3 450 - 600 m/min

3 PLUS Fine machining = low stock removal

3 500 - 600 m/min MZ 650 - 750 m/min

Hardened, heat- treated steels exceeding 1200 N/mm² (> 38 HRC)

Tool steels, tempering steels, alloyed steel, cast steels

Coarse machining = high stock removal

3 250 - 350 m/min

3 PLUS Fine machining = low stock removal

5 350 - 450 m/min MZ 450 - 600 m/min

Stainless steel (INOX)

Rust and acid-resistant steels

Austenitic and ferritic stainless steels

Coarse machining = high stock removal

3 250 - 350 m/min

3 PLUS INOX 450 - 600 m/min

Fine machining = low stock removal

5 350 - 450 m/min INOX 450 - 600 m/min MZ 450 - 600 m/min

Non-ferrous metals

Soft non-ferrous metals Alu-alloys, brass, copper, zinc

Coarse machining = high stock removal

ALU 600 - 1.100 m/min

Fine machining = low stock removal 900 - 1.100 m/min

Hard non-ferrous metals

Bronze, titanium/titanium alloys, hard alu-alloys (high Si content)

Coarse machining = high stock removal

3 250 - 350 m/min ALU 600 - 1.100 m/min

Fine machining = low stock removal

3 350 - 450 m/min ALU 900 - 1.100 m/min MZ 450 - 600 m/min

High-temperature resistant materials

Nickel based alloys, cobalt based alloys (aircraft engine and turbine construction)

Coarse machining = high stock removal 3 PLUS 300 - 450 m/min

Fine machining = low stock removal

5 350 - 500 m/min MZ 450 - 600 m/min

Cast iron Grey cast iron, white cast iron

Cast iron with fl ake graphite EN-GJL, with nodular graphite cast iron EN-GJS, white annealed cast iron EN-GJMW, black cast iron EN-GJMB

Coarse machining = high stock removal

3 450 - 600 m/min

3 PLUS

Fine machining = low stock removal

3 500 - 600 m/min

MZ 650 - 750 m/min

Plastics and other materials

Fibre-reinforced plastics (GRP/CRP) thermoplastics, hard rubber

Coarse machining = high stock removal

ALU 500 - 1.100 m/min Fine machining = low stock removal

➏ Cutting speed [m/min] ➎ Dia. [mm]

250 300 350 400 450 500 600 750 900 1.100

Rotational Speed [RPM]

2 40.000 48.000 56.000 64.000 72.000 80.000 95.000 120.000 143.000 - 3 27.000 32.000 37.000 42.000 48.000 53.000 64.000 80.000 95.000 117.000 4 20.000 24.000 28.000 32.000 36.000 40.000 48.000 60.000 72.000 88.000 6 13.000 16.000 19.000 21.000 24.000 27.000 32.000 40.000 48.000 59.000 8 10.000 12.000 14.000 16.000 18.000 20.000 24.000 30.000 36.000 44.000 10 8.000 10.000 11.000 13.000 14.000 16.000 19.000 24.000 29.000 35.000 12 7.000 8.000 9.000 11.000 12.000 13.000 16.000 16.000 24.000 30.000 16 5.000 6.000 7.000 8.000 9.000 10.000 12.000 12.000 18.000 22.000

504