Hardened steels, HSS, die steel and bearing steel cannot be ground efficiently with diamond, which reacts with iron at grinding temperatures. CBN keeps its hardness and stays thermally stable on ferrous metals, so a CBN wheel for hardened steel cuts cool, holds size and lasts far longer than conventional abrasives. Fengzuan makes resin and vitrified bond CBN wheels for tools, molds, dies, drills and bearing components.
Recommended Specifications for Hardened Steel
| Operation | Suggested wheel |
|---|---|
| HSS tool sharpening | 11A2 / 12A2, resin bond CBN |
| Mold and die surface grinding | 1A1 parallel, resin or vitrified CBN |
| Bore grinding (bearings, bushings) | Internal 1A8/1A1W, vitrified CBN |
| Centerless grinding of pins | Centerless 1A1, resin bond CBN |
| Profiles and threads | 14E1, vitrified or resin CBN |
| Grit / concentration | 80#–3000# / 50–150 |
CBN Shapes for Steel
1A1 CBN wheel for molds and dies
Straight wheels for surface and cylindrical grinding of hardened mold and die parts.
11A2 and 12A2 CBN wheels for HSS tools
Cup and dish wheels for sharpening HSS drills, taps and cutters.
1A8 / 1A1W CBN internal wheels
Vitrified CBN internal wheels for bearing rings and hardened bores.
14E1 CBN profile wheels
For threads, flutes and profiles in hardened steel.
Workpiece Materials
- HSS cutting tools, drills and taps
- Tool steel, die steel and mold steel
- Bearing steel rings, races and rollers
- Hardened alloy steels and other ferrous metals
Bond Advantages
- Resin CBN: sharp, cool cutting, low burn risk, fine finish
- Vitrified CBN: form holding, dressable, stable size in production
Products: CBN grinding wheels · internal and centerless wheels.
Why Source from Fengzuan
- Own factory: founded in 2022 in Shijiazhuang, Hebei Province, China, with production in-house from cold pressing on hydraulic presses to sintering, curing or firing, precision turning, dynamic balancing and truing.
- Made to your drawing: non-standard diameters, layer sizes, profiles, grits and concentrations matched to your machine and material, with the drawing confirmed before production.
- Diamond and CBN in three bond systems: resin, vitrified and bronze, so we recommend the bond that fits the job rather than the one we happen to stock.
- Export ready: protective individual packing, export cartons and international express shipment on FOB terms to buyers in Russia, the USA, Germany, the UAE and Qatar.
- Fast answers: inquiries answered within 24 hours, China Standard Time (UTC+8).
Not sure which wheel fits? Describe the workpiece, the machine and the result you need, and our team will propose a complete specification: shape code, size, abrasive, grit, concentration and bond.
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
- Shape code and full size (D, T, X, H, layer width, angles or radii)
- Diamond or CBN, grit and concentration (if known)
- Bond preference: resin (B), vitrified (V) or bronze/metal
- Workpiece material and machine model, wet or dry grinding
- Quantity, required lead time and destination
Frequently Asked Questions
Why not use a diamond wheel on steel?
Diamond reacts with iron at grinding temperatures and wears quickly; CBN is the correct superabrasive for hardened ferrous metals.
Which bond for mold grinding?
Resin CBN for finish and cool cutting; vitrified CBN where profile and size stability matter.
Can CBN wheels run dry?
CBN has good thermal stability and can be used dry for some operations; confirm your process with us.
Do you make CBN internal wheels for bearing rings?
Yes, vitrified and resin bond CBN internal wheels from Ø10 mm.
What are MOQ and lead times?
MOQ 15 pcs; samples within 30 days (charged); bulk within 45 days.
Grinding Hardened Steel? Get a CBN Recommendation
Send your steel grade, hardness, machine and wheel size. Email lw892398@gmail.com or WhatsApp +86 13282830167. We reply within 24 hours (China Standard Time, UTC+8).