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BRUCKNER LIVE CENTERS
SH, SHG, SV, AND SVG TYPE
 

Types SH, SHG, SV, SVG

Common Technical Features:
  • Housing - Drop-forged (tensile strength of the high-quality material used:  approx. 1,000 N/mm2
  • Taper Shank without Bore - Therefore it is not weakened.  Thus high moments of deflection can be obtained without any permanent bend to the large taper diameter.
  • High Concentricity accuracy - Guaranteed by the test report.
  • Large-dimensioned precision roller bearings, free from clearance - for taking up the radial and axial forces.  No bearings in the taper shank.
  • Seal Ring - Protects the bearings from dirt and coolant.

     
Types SH, SHG centerpoint 60, carbide tipped
 
Technical Features:
  • Regrindable to the indicator line
  • Concentricity Runout
    - Type SH  max. 0.005 mm  (.0002")
    - Type SHG  max. 0.003 mm (.0001")
  • Two Series
    - with slim housing
    - with stronger bearings
  • With thread for draw-off nut
  • For circular grinding operations we recommend the use of our supplementary seal
Applications:
  • For grinding, fine-turning and turning operations during which additional stress is put on the centerpoint (e.g. large series, change of workpiece when spindle is turning, hard workpieces, extremely small workpiece centers)
     
Technical Data:
ID No. SH 5241-2 5421-3 5242 5243 5246 5244 5247 5245 5249
ID No. SHG 5251-2 5251-3 5252 5253 5256 5254 5257 5255 5259
Max workpiece weight daN 120 120 150 240 360 500 600 1200 2100
Max RPM 7000 7000 5500 5500 5000 5000 4000 3500 2300
Supplementary Seal ID No. V13 V13 V20 V20 V25 V25 V35 V45 V58

Dimensions (mm) Types SH and SHG
ID No. SH 5241-2 5421-3 5242 5243 5246 5244 5247 5245 5249
ID No. SHG 5251-2 5251-3 5252 5253 5256 5254 5257 5255 5259
Morse Taper 2 3 2 3 3 4 4 5 6
d 13 13 20 20 25 25 35 45 58
dA 7 7 11 11 18 18 18 18 30
D 32 32 45 45 58 58 76 95 120
IA 20 20 29 29 35 35 43 60 64
IB 40 40 51 51 59 59 68 89 102
IC 65 65 86 88 102 102 121 160 179

 

Types SV, SVG centerpoint 60, full carbide with safety core
 
Technical Features:
  • Regrindable to the brazen line
  • Concentricity
    - Type SV  max. 0.005 mm (.0002")
    - Type SVG  max. 0.003 mm (.0001")
  • Two Series
    - with slim housing
    - with stronger bearings
  • For circular grinding operations we recommend the use of our supplementary seal
Applications:
  • Same as Type SH, SHG.
  • The point angle of 60 up to the large diameter can be utilized for loading workpieces
     
Technical Data:
ID No. SV 5242ZV20 5243ZV20 5246ZV25 5244ZV25 5247ZV35 5245ZV45
ID No. SVG 5252ZV20 5253ZV20 5256ZV25 5254ZV25 5257ZV35 5255ZV45
Max workpiece weight daN 100 100 250 250 400 600
Max RPM 5500 5500 5000 5000 4000 3500
Supplementary Seal ID No. V20 V20 V25 V25 V35 V45


 

Dimensions (mm) Types SV and SVG
ID No. SV 5242ZV20 5243ZV20 5246ZV25 5244ZV25 5247ZV35 5245ZV45
ID No. SVG 5252ZV20 5253ZV20 5256ZV25 5254ZV25 5257ZV35 5255ZV45
Morse Taper 2 3 3 4 4 5
d 20 20 25 25 35 45
D 45 45 58 58 76 95
IA 25 25 35 35 43 60
IB 51 51 59 59 68 89
IC 82 84 102 102 121 160

 

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