Ball Burnisher FM Bruni 1

Ball Burnishing

Until the present day, the most efficient and non­abrasive method to harden surfaces has been ball burnishing.

Items are hardened and polished in a mass of steel balls, often in a vibrating bowl or a rotating sextagon or octagonal drum, submerged in a lubricant of soapy water. The action of these containers is non-abrasive and the hammering hardens the surfaces from all sides. Plating, for example, is prevented from lifting, being firmly hammered onto its base metal. Polished items have a much longer life expectancy, as the compacted surface is more resistant to wear, scratching and corrosion.

THE BRUNIMAT SYSTEM: Rolling, not hammering

Hammering has the disadvantage, however, of leaving marks on flat items and on soft metals. The so­called "orange­peel effect" is tyical of burnishing in vibrating bowls or rotating angular drums.

1. base metal
2. precious metal coating
3. polishing ball
4. rotating direction
5. global pressure of balls

The patented brunimat construction sets completely new standards for surface quality, as well as for operating comfort and for space saving. The polishing balls, which are held in an open trough lined with an endless conveyor belt, roll firmly and smoothly with absolutely no vibration. This harmonious and continuous movement of the polishing balls result in an even and very compact hardening of the surface metal. Delicate, flat, hollow or thinly walled items such as jewelry, cogwheels and coins leave the polishing trough undamaged with no trace of hammer marks.

. . . and to retrieve the polished items in just a few seconds

brunimat's open-trough construction enables continuous access during the entire polishing process. Items can be removed for examination and reinserted at any time without interrupting operation . . . and the tedious and time-consuming emptying and sieving of small items from the polishing media becomes a thing of the past, thanks to brunimat's patented and easy to use sorting basket. In just three easy and time-saving steps the finished items can be gently separated and lifted out of the polishing media leaving the trough ready for reloading.

Baskets with 6 different mesh sizes are available:
17 x 17, 13 x 13, 10 x 10, 8 x 8, 6 x 6 and 4 x 4 mm made of RILSAN-coated wire netting.

For a quick and easy complete change of polishing media mixtures we recommend the brunimat 5-piece closed lifing system.

 Product #

Description

 FM BRUNI-1

BRUNIMAT Industrial Burnisher
Built for 3/16 or larger steel media
Operating speed 40 cm/sec.
1 X 230 V - 330 W 50 cycles
Excluding accessories TYPE MENA
Extra Charges: 1 x 115 V - 60 cycles

 FM BRUNI-2

BRUNIMAT Jewelry Roll Burnisher
Special built for small media
1/16 Pin / 2 mm Ball / Type MENA w / B1 - VIT
Operating speed 40 cm/sec.
1 X 110 V - 60 cycles - 30 min. timer
1 x 230 V - 60 cycles

 FM BRUNI-3

BRUNIMAT Type B1 - VIT Burnisher
Operating speeds 40 + 50 cycles
3 X 400 V - 330 W 50 cycles
Excluding accessories

 FM BRUNI-4

BRUNIMAT Type VARIO Burnisher
Infinitely variable speed
3 X 400 V - 330 W 50 cycles
Excluding accessories

 FM BRUNI-5

BRUNIMAT Type CYCLO Burnisher
Speeds: 20 + 40 / 30 + 60 / 35 + 70 cm/sec.
3 X 400 V - 330 W 50 cycles
Excluding accessories