H70-H50 Technical Data - T-Bird Group

Instructions For Ten. Abr. TA-H70 Series Stone Set

TNABR TA-H70 Series Stone Set consists of one (1) pair of Stone Assemblies and one (1) pair of Guides. Stone Assemblies and Guides may be changed WITHOUT removing Master Holders from Hone Head Module.

Instructions For Ten. Abr. TA-H50 Series Stone Set

TNAbr. TA-H50 Series Stone Sets consist of one (1) pair of Stone Assemblies. Stone Assemblies may be changed WITHOUT removing Master Holders from Hone Head Module.

H70-H50	A	5	7
SERIES	ABRASIVE TYPE	GRIT SIZE	HARDNESS

ABRASIVE TYPES
A – ALUMINUM OXIDE
C, J – SILICON CARBIDE
DM, DR, DV – DIAMOND
NM, NR – CBN
R25 – RUBY A/O
QT25 – CUBITRON
WA – PURE A/O

GRIT SIZE
1-	70	8-	400
2-	80	9-	500
3-	100	0-	600
4-	150	80-	800
5-	220	90-	900
6-	280	10-	1000
7-	320	00-	1200

HARDNESS
1-	SOFT
3-
5-
7-
9-
11-
13-
15-	HARD

MATERIAL	ABRASIVE TYPE	GRIT SIZE
Approximate Surface Finish in Micrometers (μm) R_a
MATERIAL	ABRASIVE TYPE	80	100	150	220	280	320	400	500	600	1200
Hard Steel	Aluminum Oxide/Silicon Carbide	0,65	–	0,50	0,45	0,30	0,25	0,12	0,08	0,03
Hard Steel	CBN	–	1,40*2,00	1,15	1,00	0,70	–	0,50	–	0,18	0,05
Soft Steel	Aluminum Oxide/Silicon Carbide	2,00	–	0,90*1,40	0,65	0,50*0,90	0,40	0,18*0,25	0,10*0,20	0,05
Soft Steel	CBN	–	1,60*2,50	–	1,25*2,00	–	–	0,65	–	0,40	0,12
Cast Iron	Silicon Carbide	2,50	–	0,75*1,00	0,50	0,30	0,25	0,15	0,12	0,08
Cast Iron	Diamond	–	–	–	2,00	–	–	1,27	–	0,50	0,30
Aluminum, Brass, Bronze	Silicon Carbide	4,30	–	2,00	1,40	0,85	0,70	0,40	0,30	0,05
Carbide	Diamond	–	–	0,75	0,50	–	–	0,18	–	0,08	0,03
Ceramic	Diamond	–	–	1,27	1,00	–	–	0,50	–	0,40	0,25
Glass	Diamond	–	–	2,40	1,80	–	–	0,75	–	0,40	0,20

Surface Finish Conversions: Millimeter to Inch – To convert one unit of measure to the other use the following formulas. Micrometer to microinch: Micrometer x 40 = Microinch

Formulas for determining minimum stock removal required on diameter to achieve desired surface finish. Surface Finish in Micrometers – (μm) R_a

EXISTING FINISH – DESIRED FINISH
100,000

=

REQUIRED
STOCK REMOVAL

Example: Existing Finish = 50 μm”; Desired Finish = 10 μm”

50 – 10
100,000

=

0.0004 INCH

MATERIAL	ABRASIVE TYPE	GRIT SIZE
Approximate Surface Finish in Microinches (μ in) R_a
MATERIAL	ABRASIVE TYPE	80	100	150	220	280	320	400	500	600	1200
Hard Steel	Aluminum Oxide/Silicon Carbide	25	–	20	18	12	10	5	3	1
Hard Steel	CBN	–	55*80	45	40	28	–	20	–	7	2
Soft Steel	Aluminum Oxide/Silicon Carbide	80	–	35*55	25	20*35	16	7*10	4*8	2
Soft Steel	CBN	–	65*100	–	50*80	–	–	25	–	16	5
Cast Iron	Silicon Carbide	100	–	30*40	20	12	10	6	5	3
Cast Iron	Diamond	–	–	–	80	–	–	50	–	20	12
Aluminum, Brass, Bronze	Silicon Carbide	170	–	80	55	33	27	16	12	2
Carbide	Diamond	–	–	30	20	–	–	7	–	3	1
Ceramic	Diamond	–	–	50	40	–	–	20	–	15	10
Glass	Diamond	–	–	95	70	–	–	30	–	15	8

Surface Finish Conversions: Inch to Millimeter – To convert one unit of measure to the other use the following formulas. Microinch to micrometer: Microinch ÷ 40 = Micrometer

*If two values are shown: the first number is for the small parts, honed on machines with one horsepower or less; the second number is for large parts, honed on machines with two or more horsepower

Formulas for determining minimum stock removal required on diameter to achieve desired surface finish. Surface Finish in Microinches – (μ”) Ra