NUBERT & CO

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Grinding Wheels with Vitrified Bond

The Application Area

  • cylindrical grinding, flat grinding, internal grinding operations

  • producing of details for bearing industry etc.

  • sharpening of metal cutting tools

  • gear grinding operations

  • thread-grinding operations

  • producing parts for turbine etc.

Main Processed Materials

  • instrument steel (P18, P6M5 etc.)

  • bearing steel

  • titanium alloy

  • heat-resistant steel

  • alloy-threated steel


Recommendations for Wheel’s Hardness Selection

Table 1. Types of hardness

Group of Hardness Designation in accordance with ISO Standards
Soft J, K, L
Medium-soft M, N, O
Hard P, Q, R, S

Main Rules for Vitrified Bonded Grinding Wheels Hardness Selection

  1. Grinding of hard materials – soft bond. The soft bond also could be used for grinding of soft and yielding materials, such as heatproof and nonferrous alloys.

  2. For rough grinding should be used wheels with harder bond.

  3. In case of speed rising client should decrease the hardness of the bond.

  4. In case of large contact of grinding wheel with processed surface should be used softer bond.

GRIT AND BOND HARDNESS RECOMMENDATIONS

FOR VITRIFIED BONDED WHEELS

Grinding Method Grit Size Hardness
Surface grinding:
Peripheral grinding, Ra 0,32 – 1,25 B91 … B126 L – M
Face grinding, Ra 0,16 – 0,63 B54 … B76 K – L
Internal grinding B64 … B126 O – R
Cylindrical grinding:
In-feed grinding, Ra 0,32 – 1,25 B126 … B151 N – O
Traverse grinding Ra 0,16 – 0,63 B54 … B107 M – N
Gear grinding:
Module < 3 mm B76 … B91 L – N
Module > 3 mm B107 … B151 K – M
Thread grinding:
Pitch of thread 0,5 – 0,8 mm B16 … B25 P – S
Pitch of thread 0,8 – 1 mm B25 … B40 O – P
Pitch of thread 1 – 1,5 mm B40 … B54 M – N
Pitch of thread > 1,5 mm B54 … B76 L – N

Characteristic of vitrified bonds PDTools Superabrasives

Vitrified Bonds Hardness Edge Resistance Porosity Recommendation for Material Hardness
XBCK4 K high low more than 55 HRC
XBCL4 L high low
VBCN5 N high low less than 55 HRC
VBCM5 M
VBCO5 O high low less than 55 HRC
VBCP5 P
VBBO5 O low high less than 60 HRC
VBBP5 P

Info and details at 0726 654 551

Write an email: nrotaru@gmail.com

Write to us on Whatsapp