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BRUCKNER LIVE CENTERS
HEAVY DUTY M, MG, AM, AMG TYPE

Types M, MG, AM, AMG

Common Technical Features:
  • Housing - High-quality material, forged, therefore uniform grain structure, tensile strength approx. 1,000 N/mm2.  Head and shank hardened.
  • Taper Shank without Bore - therefore it is not weakened.
  • Safety Spigot (German Federal Patent) - acts as an additional safeguard when connecting the center housing to the support ring.
  • High Concentricity - see below.
  • Large precision roller bearings, free from clearance - to absorb the radial and axial force.  No bearings in the taper shank.  The bearing seats in the housing and on the rotating body have a fine tolerance and are precision ground.  The bearings and their seats are selected to fit.
  • Shaft Seal Ring - protects the bearings from dirt, dust and coolant.
     
Types M, MG  without thread for draw-off nut, centerpoint 60, 75, 90

Technical Features:
  • Concentricity Runout
    - Type M  max. 0.008 mm (.0003")
    - Type MG max. 0.004 mm (.0002")
  • For operations with heavy coolant flows we recommend the use of our supplementary seal
  • See below for Technical Data and Dimensions

Applications:  

  • For turning and grinding of heavy components, e.g., turbines, rolls, crankshafts for large engines, gear trains
Technical Data:
ID No. 
Type M
140 006 140 080 140 081 180 080 180 081 180 100 180 101 230 120 230 121
ID No.
Type MG
141 006 141 080 141 081 181 080 181 081 181 100 181 101 231 120 231 121
Max workpiece weight daN 6,000 6,000 6,000 10,000 10,000 15,000 15,000 25,000 25,000
Max RPM 1600 1600 1600 1200 1200 1200 1200 1100 1100
Supplementary Seal ID No. V60 V60 V60 V80 V80 V80 V80 V100 V100

Dimensions (mm) M and MG
ID No. Type M 140 006 140 080 140 081 180 080 180 081 180 100 180 101 230 120 230 121
ID No. Type MG 141 006 141 080 141 081 181 080 181 081 181 100 181 101 231 120 231 121
Taper Size MT 6 metr. taper 80
1:20
taper 80
1:10
metr. taper 80
1:20
taper 80
1:10
metr. taper 100
1:20
 taper 100
1:10
metr. taper 120
1:20
 taper 120
1:10
d 62 62 62 80 80 80 80 100 100
D 140 140 140 180 180 180 180 230 230
IA
for angle Alpha
60 60 60 60 77 77 77 77 88 88
75 - 46 46 60 60 60 60 68 68
90 - 37 37 49 49 49 49 53 53
IB 121 121 121 146 146 146 146 183 183
IC 135 139 139 164 164 164 164 201 201

 

Types AM, AMG  with thread for draw-off nut, centerpoint 60, 75, 90

Technical Features
  • Concentricity Runout
    - Type AM  max. 0.008 mm (.0003")
    - Type AMG max.  0.004 mm (.0002")
  • For machines with tailstock sleeve without bore
  • For operations with heavy coolant flows we recommend the use of our supplementary seal
  • See below for Technical Data and Dimensions
  • See below for Draw-off nut 

Applications

  • For turning and grinding of heavy components, e.g., turbines, rolls, crankshafts for large engines, gear trains
Technical Features:
Type AM 140 006A 140 080A 140 081A 180 080A 180 081A 180 100A 180 101A 230 120A 230 121A
Type AMG 141 006A 141 080A 141 081A 181 080A 181 081A 181 100A 181 101A 231 120A 231 121A
Max workpiece weight daN 6000 6000 6000 10,000 10,000 15,000 15,000 25,000 25,000
Max RPM 1600 1600 1600 1200 1200 1200 1200 1100 1100
Supplementary seal ID No. V60 V60 V60 V80 V80 V80 V80 V100 V100

Dimensions (mm) AM and AMG
ID No. Type AM 140 006A 140 080A 140 081A 180 080A 180 081A 180 100A 180 101A 230 120A 230 121A
ID No. Type AMG 141 006A 141 080A 141 081A 181 080A 181 081A 181 100A 181 101A 231 120A 231 121A
Taper Size MT 6 metr. taper 80
1:20
taper 80
1:10
metr. taper 80
1:20
taper 80
1:10
metr. taper 100
1:20
 taper 100
1:10
metr. taper 120
1:20
 taper 120
1:10
d 62 62 62 80 80 80 80 100 100
D 140 140 140 180 180 180 180 230 230
IA
for angle Alpha
60 60 60 60 77 77 77 77 88 88
75 - 46 46 60 60 60 60 68 68
90 - 37 37 49 49 49 49 53 53
IB 121 121 121 146 146 146 146 183 183
IC 135 139 139 164 164 164 164 201 201

Special draw-off nut for type AM, and AMG (mm)
ID No. M 140A M 140A M 140A M 180A M 180A M 180A M 180A
DM 175 175 175 210 210 210 210
IM 50 50 50 40 40 40 40

 

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