MGBR 4.2mm Minimum Bore (25.4mm Reach) Miniature Boring Tool (4mm Dia. Shank) Unimaster MG
MGBR 4.2mm Minimum Bore (25.4mm Reach) Miniature Boring Tool (4mm Dia. Shank) Unimaster MG
MGBR 4.2mm Minimum Bore (25.4mm Reach) Miniature Boring Tool (4mm Dia. Shank) Unimaster MG
MGBR 4.2mm Minimum Bore (25.4mm Reach) Miniature Boring Tool (4mm Dia. Shank) Unimaster MG

MGBR 4.2mm Minimum Bore (25.4mm Reach) Miniature Boring Tool (4mm Dia. Shank) Unimaster MG

£29.45
(Exc. 20% VAT)
£105.17
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Part Number
UMG0218
Min. Bore Diameter
4.2mm
Shank Diameter
4mm
Radius
0.15mm
Working Length (LU)
25.4mm
Through Coolant
Yes - Through Toolholder
Europa Edgetech
Information
Tool DescriptionMinimum Dia. (mm)
DMIN
Cutting Length
(mm)
LU
Clearance (mm)
CDX
Radius (mm)
RE
Gauge Length
(mm)
OHX
WF
(mm)
Shank Dia.
(mm)
DCON
MGBR.4225154 ET82P4.225.40.30.15281.954


Type: Unimaster MGB Miniature Tool

Application: Designed to machine boring and profiling small bores. 

Grade: ET82P - First choice for general grooving. PVD multi-layer coating, suitable for most materials TiN.

Excellent for: Steels, Stainless Steels, Cast Iron and Heat Resistant Super Alloys.

How to set up the tool in your machine
The tool is inserted into the corresponding holder (where the tool shank and holder bore match). The tool is then orientated to the correct angle by the holder internal pin against the angle on the shank end and is finally clamped by the holder screw on the tool's flatted shank. 

Coolant can be supplied via the rear diameter of the holder, along its length and is accurately delivered from 2 slots either side of the cutting tool. Please see images in the above description for further illustration. 

Miniature Holder Coating
All Europa turning, grooving and threading holders now have E-COAT eco-friendly coating to give up to five times longer tool life.

  • High abrasion resistance
  • High surface hardness >60HRc
  • High resistance to tempering
  • High fatigue strength
  • High scratch & impact resistance
  • High corrosion resistance
  • Up to 5 times longer tool life
  • E-COAT is environmentally friendly
  • Coating has no impact on human health
  • Non-polluting process used in coating tools
Technical Data & Info

Feed Rate & Depth of Cut

fn (mm/rev)0.015 - 0.025

Speeds Chart

Material VDI GroupMaterial DesignationMaterial ConditionHardnessGradeSpeed M/Min
1Non-alloy steel & Cast steel, Free cutting steel <0.15%C.Annealed≤125 HBET82P170 - 200
2Non-alloy steel & Cast steel, Free cutting steel <0.45%C.Annealed≤190 HBET82P170 - 200
3Non-alloy steel & Cast steel, Free cutting steel <0.45%C.Annealed≤250 HBET82P170 - 200
4Non-alloy steel & Cast steel, Free cutting steel <0.75%C.Annealed≤270 HBET82P170 - 200
5Non-alloy steel & Cast steel, Free cutting steel <0.75%C.Quenched & Tempered≤300 HBET82P170 - 200
6Low-alloy steel & Cast steel (less than 5% of alloying elements)Annealed≤180 HBET82P95 - 160
7Low-alloy steel & Cast steel (less than 5% of alloying elements)Quenched & Tempered≤275 HBET82P95 - 160
8Low-alloy steel & Cast steel (less than 5% of alloying elements)Quenched & Tempered≤300 HBET82P95 - 160
9Low-alloy steel & Cast steel (less than 5% of alloying elements)Quenched & Tempered≤350 HBET82P95 - 160
10High-alloy steel, Cast steel & Tool steelAnnealed≤200 HBET82P85 - 95
11High-alloy steel, Cast steel & Tool steelQuenched & Tempered≤325 HBET82P85 - 95
12Stainless steel & Cast stainless steelFerritic/Martensitic, Annealed≤200 HBET82P105 - 140
13Stainless steel & Cast stainless steelMartensitic, Quenched & Tempered≤240 HBET82P105 - 140
14Stainless steel & Cast stainless steelAustenitic≤180 HBET82P95 - 160
15Grey cast ironPearlitic/Ferritic≤180 HBET82P140 - 190
16Grey cast ironPearlitic (Martensitic)≤260 HBET82P140 - 190
17Nodular cast ironFerritic≤160 HBET82P140 - 190
18Nodular cast ironPearlitic≤250 HBET82P140 - 190
19Malleable cast ironFerritic≤130 HBET82P140 - 190
20Malleable cast ironPearlitic≤230 HBET82P140 - 190
31Heat resistant super alloysFe based, Annealed≤200 HBET82P10 - 75
32Heat resistant super alloysFe based, Aged≤280 HBET82P10 - 75
33Heat resistant super alloysNi or Co based, Annealed≤250 HBET82P10 - 75
34Heat resistant super alloysNi or Co based, Aged≤350 HBET82P10 - 75
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