CBN Grinding Wheels

Cubic boron nitride (CBN) is the superabrasive of choice for grinding hardened ferrous materials. CBN has better thermal stability than diamond on steel, so CBN grinding wheels stay sharp, run cool and hold size. Fengzuan produces resin bond and vitrified bond CBN wheels for HSS, tool steel, die steel, bearing steel and hardened alloy steels, from small internal wheels to large straight wheels.

CBN Grinding Wheel Specifications

Parameter	Range / option
Abrasive	CBN (cubic boron nitride)
Bond	Resin (B) or vitrified (V)
Outer diameter (D)	Ø10–850 mm
Thickness (T) / bore (H)	Made to your drawing / to suit your machine spindle
Abrasive layer (X)	3–20 mm common; other depths to drawing
Grit	80# – 3000#
Concentration	50 – 150
Shapes	1A1, 6A2, 6A2T, 11A2, 12A2, 14E1, internal 1A8/1A1W and profiles to drawing
Coolant	Wet or dry (confirm per specification)
Marking example	1A1 D150 T10 X5 H32 · D/CBN 140/170 C75 B/V/R

Resin Bond CBN Wheels

Sharp, cool cutting with low risk of burning and a fine surface finish. Resin CBN is well suited to tool sharpening and regrinding, centerless and face grinding.

Vitrified Bond CBN Wheels

Controlled porosity, good form holding and dimensional stability. Vitrified CBN can be dressed for profile accuracy and suits precision and production grinding, such as internal (ID) and cup wheel grinding.

CBN Wheel Shapes

1A1 CBN straight wheel

For cylindrical, surface and flute grinding of HSS and hardened steel.

1A8 / 1A1W CBN internal grinding wheels

Small-diameter wheels, from Ø10 mm, for bore grinding of bearing rings, gears and hardened bushings. See internal and centerless wheels.

11A2 and 12A2 CBN cup and dish wheels

For sharpening HSS cutting tools, drills, taps and cutters on tool grinders.

6A2, 6A2T and 14E1 CBN wheels

Cup wheels for face grinding and V-edge wheels for flutes, threads and profiles.

Applicable Workpiece Materials

• High-speed steel (HSS) cutting tools, drills and taps
• Tool steel and die/mold steel
• Bearing steel: rings, races and rollers
• Hardened alloy steels and other ferrous metals

Advantages of CBN

• Long wheel life compared with conventional abrasives
• Consistent size and finish over long runs
• Reduced thermal damage to hardened workpieces
• Suitable for dry grinding and high-speed finishing

Application guide: CBN wheels for hardened steel and mold grinding.

Ordering, Samples and Delivery

• MOQ: 15 pcs per specification
• Samples: produced within 30 days; sample cost and freight are charged
• Bulk production: within 45 days after drawing confirmation
• Payment: PayPal · Trade term: FOB · Shipping: international express
• Export markets served: Russia, USA, Germany, UAE and Qatar

What to send for a fast quote

1. Shape code and full size (D, T, X, H, layer width, angles or radii)
2. Diamond or CBN, grit and concentration (if known)
3. Bond preference: resin (B), vitrified (V) or bronze/metal
4. Workpiece material and machine model, wet or dry grinding
5. Quantity, required lead time and destination

Frequently Asked Questions