#25250 Manual Boring Head
Simple, extremely rigid construction.  The finest materials and craftsmanship are
employed to combine strength, flexibility and accuracy in one tool of unique
design.  Two vertical boring tool holes: 1 centered and the other offset.  One cross
hole for greater versatility and capacity.  Dependable adjustment -- wide
graduation for accurate reading.  Perfectly balanced for high speed operation.  
Back is threaded 1½"-18 for 2" and 3" sizes.
Description
Size: 2"
Size: 3"
Head Diameter
50 mm
75 mm
Tool Hole
12 mm or 1/2"
18 mm or 3/4"
Scale Graduation
Metric
50x0.02 mm
100x0.01 mm
SAE
50x0.001"
100x0.0005"
Weight
0.5 kg
2.1 kgs
#25265 Boring Head Shank
All types of shanks are threaded 1½"-18 to fit the above #25250 Manual Boring
Head.  Shanks are integral to the heads.
Shank Taper
Drawbar Threads
Weight
Metric
SAE
MT2
Tang
0.4 kg
MT3
Tang
0.5 kg
MT4
Tang
0.8 kg
MT5
Tang
1.8 kg
R8
N/A
7/16"-20
0.6 kg
NT30
M12x1.75P
1/2"-13
0.6 kg
NT40
M16x2.0P
5/8"-11
1.2 kg
NT50
M24x3.0P
1"-8
3.2 kg
BT40
M16x2.0P
N/A
1.3 kg
BT50
M24x3.0P
N/A
4.0 kg
#25294 Boring Tool Kit
Kit in a molded plastic carrying case includes one each of the following items:

  • 45º Boring Bar 18 mm dia. x 90 mm length
  • 45º Boring Bar 18 mm dia. x 120 mm length
  • Tungsten Carbide Tool Bit 1/4"x 35 mm
  • Boring Tool 18 mm dia. x 90 mm length        
  • Boring Tool 18 mm dia. x 120 mm length
  • Boring Tool 10 mm dia. x. 60 mm length
  • Boring Tool 10 mm dia. x 70 mm length
  • Boring Tool 10 mm dia. x 80 mm length
  • Adaptor 18 mm shank x 10 mm adaptor
  • Hex Key Wrench 3 mm
  • Hex Key Wrench 4 mm
  • Hex Key Wrench 5 mm
  • Hex Key Wrench 6 mm
  • #25250 Manual Boring Head 3" Size
  • #25265 Boring Head Shank (MT2, MT3, MT4, MT5, R8, NT30, NT40,
    NT50, BT40 or BT50 as described in the above table)
Tools of German quality at Taiwanese prices
Haupt Industries, Inc.
Taipei 106, Taiwan
Company Info
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