BLACKS CHARPY / IZOD CUTTING & PREPARATION MACHINES

BLACKS CHARPY & IZOD Cutting MachinesCharpy Specimen and Caliper GaugesCharpy BroachesCharpy Specimen Gauges and Charpy BroachesBLACKS Hand-operated Charpy / Izod Broaching MachineBLACKS Motorised Charpy / Izod Broaching MachineBLACKS CNM Specimen Milling Machine

 

Genuine Blacks Charpy/Izod Notching Broaches

Our broaches meet most standards i.e. BS, ISO, EN, ASTM and many other International Standard notch profiles.

 

Due to the variety of broaches and notch configurations, broaches are ordered separately.

 

All broaches, which have a unique serial number, are tested to ensure that they cut the correct form before despatch and a Certificate of Conformance is issued with each broach.

 

Our broaches are manufactured using the latest CNC grinding techniques at our factory in Kent, giving customers the reassurance that they are purchasing a quality product.

Blacks Broaches made in the UK

STANDARD BROACHES
Our standard broaches are designed for use on carbon and low alloy steels. 

DRAWING
NUMBER
 

BROACH
TYPE

NOTCH

DEPTH

ANGLE

RADIUS

BROACH
KEEP

CARBON & LOW ALLOY STEELS

COMMENT

CNB30-027A2

C

V

2mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 42 HRC

 

CNB30-028A2

M

V

1mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 42 HRC

 

CNB30-002A2

H

V

3.3mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 40 HRC

For use on round specimens.

CNB30-035A2

T

V

3.5mm

45˚ +/- 1˚

0.25mm +0.020/-0.025

X

< 35 HRC

GOSH 9454 (0.1/0.27mm radius).

CNB30-004A2

JS

U

5mm

 

1 mm +/-0.025

Y

< 32 HRC

With packer CNB30-029A4 - 2 cuts required.

CNB30-005A2

N

U

2mm & 3mm

 

1 mm +/-0.025

Y

< 32 HRC

When cutting 2mm depth, only 2/3rd of cutting length is used.

CNB30-006A2

P

U

2mm

 

1 mm +/-0.025

Y

< 35 HRC

 

Broaches manufactured in the UK by RJW Ltd

HARD CUT COATED BROACHES
 

This is a superior broach to the standard broach and is recommended for use on our Variable Speed Machine for tougher, harder and stainless steel materials to extend tool life.
 
If used on our Hand Machine, tool life is dependant on a smooth cutting action by the operator and the machining difficulty of the material.

DRAWING
NUMBER
 

BROACH
TYPE

NOTCH

DEPTH

ANGLE

RADIUS

BROACH
KEEP

CARBON & LOW ALLOY STEELS

COMMENT

CNB30-027A2H

C

V

2mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 52 HRC

 

CNB30-028A2H

M

V

1mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 52 HRC

 

CNB30-002A2H

H

V

3.3mm

45˚ +/- 1˚

0.25mm +/-0.025

X

< 50 HRC

For use on round specimens.

CNB30-035A2H

T

V

3.5mm

45˚ +/- 1˚

0.25mm +0.020/-0.025

X

< 45 HRC

GOSH 9454 (0.1/0.27mm radius).

CNB30-004A2H

JS

U

5mm

 

1 mm +/-0.025

Y

< 42 HRC

With packer CNB30-029A4 - 2 cuts required.

CNB30-005A2H

N

U

2mm & 3mm

 

1 mm +/-0.025

Y

< 42 HRC

When cutting 2mm depth, only 2/3rd of cutting length is used.

CNB30-006A2H

P

U

2mm

 

1 mm +/-0.025

Y

< 45 HRC

 

PLEASE NOTE

When notching steels with a greater hardness than in the tables above and notching "superalloys" on our variable speed broaching machine with “hard cut” broaches, the broach life will be dependant on the machinability of the material

For difficult to machine materials - if you have doubts about the suitability of our broaches to notch your material we would ask you to check with us for confirmation that our broaches are suitable.

Please be aware that following trials we have found that our "hardcut" broaches will not notch, Stellite 6.

Broaches are a cutting tool and are considered a consumable item. Broaches will wear and without care teeth can break, so warranties on our broaches are generally excluded.

 

 

 

Broach Regrind Service
 

We also offer a broach regrind service. Please note this is dependant upon the condition of the broach. We only grind the land (cutting edge) and not the form. Generally if the form is worn or more than one tooth adjacent to another are broken then it may not be practicable to re-sharpen the broach.
 

 

 

 

 

 

 

Hand-operated Charpy Machine
Hand Operated
Charpy Notch
Machines

Motorised Charpy Notch Machines
Motorised Charpy
Notch Machines

Blacks CNM Machines
BLACKS CNM
Specimen Machines

Charpy and Izod Broaches
Charpy/Izod Notch
Broaches

Notch specimen gauges and callipers
Specimen and Notch Depth Caliper Gauges

Blacks Equipment Spare Parts
Genuine Spare Parts
and Consumables

BLACKS CHARPYBLACKS CHARPY & IZOD notch machines - Hand-operated - Motorised - CNM Machine
Manufactured by RJW LTD
Unit A5, Chaucer Business Park, Watery Lane, Kemsing, Sevenoaks, Kent, TN15 6PW
Precision & Production Engineers - view full Contact Details

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