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BRUCKNER DEAD CENTERS
250, 251, 252, 253 FORMS

 

Forms 250-253


Common Technical Features:
  • Material:  High quality tool steel, through-hardened.
  • Out of Roundness:  Max. 0.003 mm (.0001")
  • Taper Shank Tolerance:  The deviation of taper Z is < AT4 (guage accuracy) to DIN 228.  This means a precise seating of the center in the tailstock sleeve.

     

Form 250

  • To DIN 806
  • Full center, 60
Technical Data:

Form

Taper Size ID No. d2 lC L

250

MT0 2500 9.2 20.0 70
MT1 2501 12.2 26.5 80
MT2 2502 18.0 36.0 100
MT3 2503 24.1 44.0 125
MT4 2504 31.6 57.5 160
MT5 2505 44.7 70.5 200
MT6 2506 63.8 88.0 270
Metr. taper 80 1:20 2507.20 80.4 124.0 320
Metr. taper 80 1:10 2507.10 80.8 120.0 320

 

Form 251

  • To DIN 806
  • Half center, 60
Technical Data:
Form Taper Size ID No. d2 lC L h lh
251 MT1 2511 12.2 26.5 80 1.5 22
MT2 2512 18.0 36.0 100 2 30
MT3 2513 24.1 44.0 125 3 38
MT4 2514 31.6 57.5 160 5 50
MT5 2515 44.7 70.5 200 7 63
MT6 2516 63.8 88.0 270 10 79

 

Form 252

  • Ground centerbore, 60
Technical Data:
Form Taper Size ID No. d2 lC L a b
252 MT1 2521 12.2 23.5 77 4 3x1
MT2 2522 18.0 32.0 96 6 4x1.5
MT3 2523 24.1 38.0 119 8 5x2
MT4 2524 31.6 49.5 152 10 6x2.5

 

Form 253

  • Same as Form 252 but with half center
Technical Data:
Form Taper Size ID No. d2 lC L a b h lh
253 MT1 2531 12.2 23.5 77 4 3x1 2 19
MT2 2532 18.0 32.0 96 6 4x1.5 3 26
MT3 2533 24.1 38.0 119 8 5x2 4 32
MT4 2534 31.6 49.5 152 10 6x2.5 5 42

 

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