Properties and application:

  • Drill taper MORSE the standard DIN 228-A (with internal screw torque)
  • Material: steel chrome-manganese
  • Carburiced on depth 0,7 mm
  • Hardened and precisely grinded
  • Surface hardness 58 ? 2 HRC
  • Cone angle tolerance AT3
  • Balanced fixtures G6,3 to 12000 rpm.

Technical data:

TYP MK-M 7712
apx trzpien7712MK-M
apx trzpien7712 rys
CodeMKd1MDL3L6L4
MK3.D14.M12 3 14 12 22 151 17 25
MK3.D18.M16 3 18 16 32 154 19 25
MK3.D22.M20 3 22 20 40 157 22 25
MK3.D26.M24 3 26 24 48 159 24 25
MK4.D11.M10 4 11 10 20 169 12 25
MK4.D14.M12 4 14 12 22 179 17 25
MK4.D18.M16 4 18 16 32 182 19 25
MK4.D22.M20 4 22 20 40 185 22 25

 STANDARDS MORSE'A (DIN 228A)
apx tech oprawka DIN228rysa

PARAMETERS

MK2

MK3

MK4

MK5
d1 17,78 23,83 31,27  44,40
d3 14,6 19,8  25,9 37,6
d4 max 14,0 19,0 25,0 35,7
d7 max 13,2 16,0 21,5 26,0
d8 10,5 13,0 17,0 21,0
d9 M10 M12 M16 M20
a/2 1° 25?50" 1° 26?16"  1° 29?15" 1° 30?26"
a 5,0 5,0 6,5 6,5
l1 max 64,0 81,0 102,5 129,5
l2 5 7  9 10
l3 min 24 24  32 40
l4 min 31,5 33,5  42,5  52,5
15 0+0,5 5,0 5,5  8,2  10,0
STANDARDS MORSE'A (DIN 228B)
apx tech oprawka DIN228rysb

PARAMETERS

 MK2 MK3 MK4 MK5
d1 17,78 23,83 31,27 44,40
d5 14,0 19,1 25,2 36,5
d6 max 13,5 18,5 24,5 35,7
a/2 1° 25?50" 1° 26?16" 1° 29?15" 1° 30?26"
16 0/-1 75,0 94,0 117,5 149,5
l7 max 16 20 24 29
a 5,0 5,0 6,5 6,5
bh13 6,3 7,9 11,9  15,9
r2 6 7 8 10
r3 1,6 2,0 2,5 3,0