CBN WHEEL

For machines : NC240 - MD540 - AUTO 4X - AUTO 5X - 3P32 - C226 - C222 - A11 - A51 -

CBN and diamant wheels

Désignations :

Straight

Conical

Grain
D126 means: diamond wheel with grain of 126
B151 means: Borazon (CBN) wheel with grain of 151

Group of grain	Thin (Finishing)				Middle (Semi finishing)				Big (Roughing)
Size of grain in micron	28/20	40/28	50/40	63/50	80/63	100/80	125/100	160/125	200/160	250/200	315/250
Normalized name of grains	39	46	54	64	76	107	126	151	181	252	301

Influence of grain
The grain influence:
            Surface quality
            Output of tool
            Price
We will for example choose a big grain for:
            A better life time of the wheel
            A lot of material to grind
Inconvenient will be:
Strength for cutting bigger
            Bad surface quality
            Higher temperature
Carat
The carat is the unit of material used for abrasive. One carat is 0.2 grams.

Concentration
Concentration determine the quantity of abrasive in the wheel (weight of abrasive nude, without metallization)

Concentration	Weight of abrasive in carats / cm3
100	4.4
75	3.3
50	2.2

Concentration is note C (in this folder).

Influence of concentration
We will choose for example a big concentration for :
            A better life time of the wheel
            A better surface quality
Inconvenient will be:
Lack of free-cutting
            Strength for cutting bigger
            Higher temperature

LIANT
Their function is to hold the abrasive grain, during work, and to let it go when it is over. The ideal binder is a mix with good cutting power, a good surface quality, and worn state of wheel.
a. metallic binder
            High resistance against use
            Allowed profiles
            Work with watering
b. resin binder
            Very good cutting power
            Small heating
            Work with or without watering
c. Electrolytic binder
            Excellent cutting power

Influence of binder hardness
A hard binder for:
            A better retention
            A better life time
            A better surface quality

Inconvenient will be:
Lack of free-cutting
Strength for cutting bigger
High temperature

Dressing & brightening up
Brightening up

With a polishing rockT823.000
Dressing
The wheel dressing allows to have the original angles on the wheel in order to be able to sharpen the drills correctly. Pay attention, the wheel dressing doesn't allow to have better cutting conditions. You have to finish dressing with a special stick (paragraph 2).
1. Dressing CBN and diamond wheel on the machine (recommended) :
Can be done on every machine of AVYAC. You just have to change the tool by a diamond.
Attention : Brightening up is indispensable.
2. Dressing CBN and carbide wheel outside the machine :

The dressing is done with a special dressing material with brake, installed on an universal grinding machine. The wheel to be dressed is set on the spindle of the machine and the special dressing material is set on the crossed tables. The dressing tool is equipped with a vitrified wheel and a system to throw the wheel by hand before it comes in contact with the wheel to be dressed.

The special dressing material is generally sold by the wheels manufacturers, who tell you which wheel you have to use for dressing.

.ATTENTION:
After all dressing operation, you have to brighten the wheel with a special stick.

		brightening stick
Before brightening	After brightening	brightening stick

The wheel manufacturers sell also the sticks according to the wheel you use.

N°	Form	Characteristics	Ref AVYAC	Use on machines :	Grinding cycle :	Pour les diameter*:
T000		DIAMANT 12V9 D100 Grain 126 C100 Liant résine	T822.000	3P32 AUTO 4X AUTO 5X MD540 NC240	100 101 107 126 140 202-212 carbure 203-213 carbure 204-214 carbure	3 to 20 mm
T001		CBN 12V9 D100 Grain 126 C100 Liant résine	T822.001	3P32 AUTO 4X AUTO 5X MD540 NC240	002 – 003 – 004 006 033 - 034 202-212 HSS 212-213 HSS 213-214 HSS	3 to 20 mm
T002		DIAMANT 6A9 D100 grain 126 C100 Liant résine	T822.002	3P32 AUTO 4X AUTO 5X MD540 NC240	100 140	3 to 20 mm
T003		CBN 6A9 D100 grain 151 C100 Liant résine	T822.003	3P32 AUTO 4X AUTO 5X MD540 NC240	002 003 004 006	10 to 40 mm
T005		CBN 11V2 D100 Grain 126 C100 Liant résine	T822.005	AUTO 4X AUTO 5X MD540 NC240	010 011 012 015 040 250	3 to 20 mm
T006		DIAMANT 11V2 D100 Grain 126 C100 Liant résine	T822.006	AUTO 4X AUTO 5X MD540 NC240	102 110 114	3 to 20 mm
T007		CBN D100 Grain 126 C100 Liant résine A = 33° (Angle étage =120°) ou A = 32.3° (Angle étage =118°)	T822.007	AUTO 4X AUTO 5X	032 (HSS)	3 to 27 mm
T008		DIAMANT D100 Grain 126 C100 Liant résine A = 33° (Angle étage =120°) ou A = 32.3° (Angle étage =118°)	T822.008	AUTO 4X AUTO 5X	032 (CARBURE)	3 to 20 mm
T009		CBN D100 Grain 126 C100 Liant résine A = 18° (Angle d'étage =120°) ou A = 17,3° (Angle d'étage =118°)	T822.009	AUTO 4X AUTO 5X	032 (HSS)	3 to 27 mm
T010		DIAMANT D100 Grain 126 C100 Liant résine A = 18° (Angle d'étage =120°) ou A = 17,3° (Angle d'étage =118°)	T822.010	AUTO 4X AUTO 5X	032 (CARBURE)	3 to 20 mm
T011		CBN D100 Grain 126 C100 Liant résine	T822.011	AUTO 4X AUTO 5X	032 (HSS)	3 to 27 mm
T012		CBN Forme spéciale A variable D100 Grain 126 C100 Liant résine	T822.012	MD540 NC240	032 (HSS)	3 to 27 mm
T013		DIAMANT Forme spéciale A variable D100 Grain 126 C100 Liant résine	T822.013	MD540 NC240	032 (CARBURE)	3 to 20 mm
T020		CBN 11V2 D100 Grain 126 C100 Liant résine	T822.020	AUTO 4X AUTO 5X MD540 NC240	010 011 012 015 040 250	3 to 27 mm
T021		DIAMANT 11V2 D100 Grain 126 C100 Liant résine	T822.021	AUTO 4X AUTO 5X MD540 NC240	102 110 114	3 to 20 mm
T022		DIAMANT D150 Grain 126 C100 Liant résine	T822.022	MD540 (pour les forets 104 et 126 uniquement) NC240	140 141 142	3 to 32 mm
T023		CBN 6A9 D100 grain 126 C100 Liant résine	T822.023	AUTO 4X AUTO 5X MD540 NC240	002 003 004 006	3 to 20 mm
T026		DIAMANT Forme spéciale D100 grain 126 C100 Liant résine	T822 026	NC240	104 106	8 to 20 mm
T027		DIAMANT Forme spéciale D100 grain 126 C100 Liant résine	T822.027	NC240	104 106	< 10 mm
T028		DIAMANT D100 grain 126 C100 Liant résine	T822.028	NC240	146 147	3 to 20 mm
T100		DIAMANT 6A9 D150 grain 126 C100 Liant résine	T822.100	C226 AUTO 4X AUTO 5X MD540 NC240	100 107 140	3 to 32 mm
T101		CBN 6A9 D150 grain 126 C100 Liant résine	T822.101	C226 AUTO 4X AUTO 5X MD540 NC240	002 003 004 006	3 to 40 mm
T103		DIAMANT 6A9 D150 grain 126 C100 Liant résine	T822.103	C226 AUTO 4X AUTO 5X MD540 NC240	100 107 140	3 to 32 mm
T104		CBN 6A9 D150 grain 126 C100 Liant résine	T822.104	C226 AUTO 4X AUTO 5X MD540 NC240	002 003 004 006 020 021 025	3 to 40 mm
T112		DIAMANT 12V9 D125 Grain 126 C100 Liant résine	T822.112	AUTO 4X AUTO 5X MD540 NC240	100 107 126 140	3 to 27 mm
T113		DIAMANT 12V2 D125 Grain 126 C100 Liant résine	T822.113	AUTO 4X AUTO 5X MD540 NC240	102 110 114	3 to 20 mm
T114		CBN 12V2 D125 Grain 126 C100 Liant résine	T822.114	AUTO 4X AUTO 5X MD540 NC240	013 014 010 011 012 015 040 250	3 to 27 mm
T115		CBN 12V9 D125 Grain 126 C100 Liant résine	T822.115	AUTO 4X AUTO 5X MD540 NC240	002 003 004 006 014	3 to 27 mm
T117		DIAMANT 1V1 D125 Grain 126 C100 Liant résine	T822.117	NC240	104 (brise copeaux) 106 (brise copeaux)	3 to 20 mm
T118		DIAMANT 6A9 D125 Grain 126 C100 Liant résine	T822.118	AUTO 4X AUTO 5X MD540 NC240	100 107 140	3 to 20 mm
T134		DIAMANT 6A2 D150 Grain 126 C 100 Liant résine	T822.134	NC240	140	3 to 32 mm
T025		CBN D75 11V9 Grain 151 RC75 Resin Binder	T822.025	A11	2 cuts end mills + Diameter and outside for 3 cuts mills
T075		DIAMOND D75 11V9 Grain 151 RC75 Resin binder	T822.075	A11	2 cuts end mills + Diameter and outside for 3 cuts mills
T122		DIAMOND D150 4BT9 Grain 126 RC75 Resin binder	T822.122	A11	Groove of 2 cuts mills
T123		CBN D150 4BT9 Grain 126 RC75 Resin binder	T822.123	A11	Groove of 2 cuts mills
T124		DIAMOND D150 4BT9 Grain 64 RC50 Resin binder	T822.124	A11	Groove of 2 cuts mills
T125		CBN D150 4BT9 Grain 76 RC50 Resin binder	T822.125	A11	Groove of 2 cuts mills
T126		DIAMOND D150 11V9 Grain 151 RC75 Resin binder	T822.126	A11	2 cuts end mills + Diameter and outside for 3 cuts mills
T127		CBN D150 11V9 Grain 181 RC75	T822.127	A11	2 cuts end mills + Diameter and outside for 3 cuts mills
T128		DIAMOND D150 11V9 Grain 76 RC75 Resin binder	T822.128	A11	2 cuts end mills + Diameter and outside for 3 cuts mills
T129		CBN D150 11V9 Grain76 RC75	T822.129	A11	2 cuts end mills + Diameter and outside for 3 cuts mills
T130		DIAMOND D150 1A1 Grain 151 RC75 Resin binder	T822.130	A11	Groove and radius of 2 cuts mills
T131		CBN D150 1A1 Grain 126 RC50	T822.131	A11	Groove and radius of 2 cuts mills
T132		DIAMOND D150 1A1 Grain 76 RC75 Resin binder	T822.132	A11	Groove and radius of 2 cuts mills
T133		CBN D150 1A1 Grain 76 RC50 Resin binder	T822.133	A11	Groove and radius of 2 cuts mills
*to titre indicatif : variable suivant le type de machine

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