Ball-lock punches for heavy duty with point larger than shank P_-BKNB / P_-BKN_

Material :

• Material A : High-speed steel HWS / 1.2379 / D2 / X155CrVMo12.1 
• Material B : High-speed steel HSS / 1.3343 / M2 / HS 6.5.2 / Z90

Standard : ISO 10071 / NF E63-102

Dimensions :

• Diameter : from 32mm to 40mm
• Length from 71mm to 80mm

Ball fixing Ø10-12mm.

Available shapes : Available as a blank or following our 6 standards catalog shapes. Others shapes can be made as special.

Coating : Standard coating : TIN, Alcrona (AlCrN), TICN, CrN, t-ac.

Other coating on request.

Hardness :

• Material A : 

Body 58 - 62 HRc

• Material B : 

Body 60 - 64 HRc

Benefits :

• The ball-lock range allows quick removal of the punch without having to touch the punch retainer. The disassembly is performed with a ball pushing tool reducing the tools downtime.
• Possibility to cut large shapes in a small footprint.
• Heavy load range can withstand heavy pulling and un-pulling forces.
• All our punches are engraved to your specifications for quick identification.

Tolerances :

• Body tolerance g5
• Length tolerance +1/0
• Shape tolerance ± 0,01

Conception :

• The ball-lock fixing is machined. 
• The body and shape are grinded with high precision.

Target application

Ideal for press tools or injection moulds.

Recommendations for use :

• Mounting : The ball-lock punch is mounted in a ball-lock punch-retainer.
• Cutting clearance : We recommand a cutting clearance between the die button and the punch corresponding to 10% of the thickness of the sheet being cut. (except special applications).

Maintenance recommendations :

• Regular cleaning
• Regular inspection
• Checking alignment with the die
• Regular lubrication

To order you need to indicate : 

1. The desired dimensions
2. Desired shape (except for blanks)
3. Shape dimensions (except for blanks)
4. The desired coating
5. Shape orientation
6. Standard alterations

Example : PB-BKNL-16-71-20-P12.5-W8-R2T0-TIN