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BRUCKNER LIVE CENTERS
ZA AND ZAG BULL NOSE LIVE CENTERS

  Types ZA and ZAG

Common Technical Features:
  • Bullnose Head - made of wear resistant, through-hardened alloy tool steel.
  • Taper Shank - case-hardened for protection from damage.
  • High Concentricity - guaranteed with a test report.
  • Large Precision roller bearings, free from clearance - to withstand the radial and axial forces.
  • Shaft Seal - protects the bearings from dirt, dust and coolant.
  • Maintenance - the bearings are maintenance-free due to permanent lubrication.
     
Type ZA, ZAG without thread for draw-off nut, angle 60°, or 75°
Technical Features:
  • Concentricity Runout
    - Type ZA  max. 0.007 mm (.0003")
    - Type ZAG  max. 0.003 mm (.0001")
  • Version A with thread for draw-off nut and nut available

Applications:

  • For turning and grinding of tubes and workpieces with large bores.
  • Mechanical Engineering:  Main spindles for machine tool, hollow shafts, paper rolls, rings and gears.
  • Automotive Industry/Motor Construction:  Support tubes for truck axles, pistons, cylinder liners, crankshafts, wheel hubs.
  • Aircraft Industry/Shipbuilding:  Engine main shafts and transmission components, turbines, drive shafts.

**This page is very long:  for Angle 75° please scroll down**
Technical Data:
Angle 60º
ID No. ZA ID No. ZAG Max workpiece weight daN Max RPM
1920:60 2120:60 230 5000
1921:60 21211:60
1922:60 2122:60
1930:60 2130:60
1831:60 2031:60 450 4300
1931:60 2131:60
1932:60 2132:60
1933:60 2133:60
1841:60 2041:60
1941:60 2141:60
1942:60 2142:60 1200 3600
1943:60 2143:60
1944:60 2144:60
1945:60 2145:60
1947:60 2147:60
1952:60 2152:60
1953:60 2153:60
1954:60 2154:60 2500 2000
1955:60 2155:60
1957:60 2157:60
1958:60 2158:60
1959:60 2159:60
1964:60 2164:60 3000 2000
1965:60 2165:60
1967:60 2167:60
1968:60 2168:60
1969:60 2169:60

Dimensions (mm) ZA and ZAG 60º
ID No. ZA ID No. ZAG Morse Taper D d IC ID
1920:60 2120:60 2 45 15 79 88
1921:60 21211:60 2 60 20 74 83
1922:60 2122:60 2 80 25 70 79
1930:60 2130:60 3 45 15 78 87
1831:60 2031:60 3 60 1 112 120
1931:60 2131:60 3 60 20 96 105
1932:60 2132:60 3 80 25 96 105
1933:60 2133:60 3 100 35 96 105
1841:60 2041:60 4 60 1 113 121
1941:60 2141:60 4 60 20 98 107
1942:60 2142:60 4 80 25 112 122
1943:60 2143:60 4 100 35 112 122
1944:60 2144:60 4 125 40 112 122
1945:60 2145:60 4 150 50 112 122
1947:60 2147:60 4 200 75 112 122
1952:60 2152:60 5 80 25 113 127
1953:60 2153:60 5 100 35 113 127
1954:60 2154:60 5 125 40 168 182
1955:60 2155:60 5 150 50 169 173
1957:60 2157:60 5 200 75 140 154
1958:60 2158:60 5 250 100 165 179
1959:60 2159:60 5 300 150 165 179
1964:60 2164:60 6 125 40 171 188
1965:60 2165:60 6 150 50 162 179
1967:60 2167:60 6 200 75 143 160
1968:60 2168:60 6 250 100 168 185
1969:60 2169:60 6 300 150 168 185

 

Technical Data:
Angle 75º
ID No. ZA ID No. ZAG Max workpiece weight daN Max RPM
1942:75 2142:75 1200 3600
1943:75 2143:75
1944:75 2144:75
1945:75 2145:75
1953:75 2153:75
1954:75 2154:75 2500 2000
1955:75 2155:75
1957:75 2157:75
1958:75 2158:75
1959:75 2159:75
1964:75 2164:75 3000 2000
1965:75 2165:75
1967:75 2167:75
1968:75 2168:75

1969:75

 2169:75

Dimensions (mm) Types ZA and ZAG 75º
ID No. ZA ID No. ZAG Morse Taper D d IC ID
1942:75 2142:75 4 80 25 112 122
1943:75 2143:75 4 100 35 112 122
1944:75 2144:75 4 125 40 112 122
1945:75 2145:75 4 150 50 112 122
1953:75 2153:75 5 100 35 113 127
1954:75 2154:75 5 125 40 168 182
1955:75 2155:75 5 150 50 169 173
1957:75 2157:75 5 200 75 140 154
1958:75 2158:75 5 250 100 165 179
1959:75 2159:75 5 300 150 165 179
1964:75 2164:75 6 125 40 171 188
1965:75 2165:75 6 150 50 162 179
1967:75 2167:75 6 200 75 143 160
1968:75 2168:75 6 250 100 168 185

1969:75

 2169:75 6 300 150 168 185

 

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