CEREC 3 milling burs

CEREC 3 burs for lithium disilicate and glass ceramics

Eagle CEREC 3 milling burs are diamond grinding burs compatible with CEREC 3 and CEREC 3 Compact milling units. They are made for wet grinding of lithium disilicate (such as IPS e.max CAD) and glass ceramic blocks. The original CEREC 3 burs are no longer supplied by the machine maker, so labs and clinics still running these units need a dependable replacement source.

Each pack holds 5 burs of one type. Bundles of 6 packs (2 of each type, 30 burs) or 12 packs (4 of each type, 60 burs) keep both sides of the unit stocked.

CEREC 3 bur types at a glance

The REF numbers show which original tool each Eagle bur replaces, so you can match it to the bur your unit uses.

Which CEREC 3 step bur do you need?

CEREC 3 grinds with two burs at once: a step bur on the left and the cylinder pointed bur on the right. Step bur 10 and Step bur 12 do the same job on the inner surface; Step bur 12 is the longer version. Your CEREC software version and its tool table decide which step bur the unit expects, so check the bur your software asks for before you order and do not mix types.

CEREC 3 burs do not fit the CEREC MC XL. If you run an MC XL, see our MC XL compatible milling burs instead.

What these CEREC 3 milling burs grind

• Lithium disilicate - such as IPS e.max CAD blocks for crowns, inlays, onlays and veneers
• Glass ceramics - glass ceramic CAD/CAM blocks

The diamond surface is made for hard, brittle ceramics, which CEREC 3 grinds wet with coolant. These burs are not meant for zirconia.

How to change CEREC 3 burs

Follow your CEREC 3 operator's manual and software for the exact procedure. In general:

1. Start the bur change function in your CEREC software and wait until the grinding chamber is ready.
2. Remove the worn step bur (left) or cylinder pointed bur (right) with the bur wrench supplied with the unit.
3. Rinse ceramic sludge from the chuck area.
4. Insert the new bur straight and tighten it as the manual describes, without over-tightening.
5. Confirm the change in the software and run calibration if your manual calls for it after a bur change.

When to replace CEREC 3 milling burs

There is no fixed number of restorations per bur; it depends on block type, restoration size and coolant condition. Replace the burs when you see:

• Grinding takes noticeably longer than usual
• More chipping at the margins of crowns, inlays and veneers
• Rougher surfaces that need more polishing
• A worn or smooth diamond surface at the bur tip
• A loose or poor fit of the inner surface

Many CEREC users replace the left and right burs together, so both sides grind evenly.

Tips for longer bur life and smoother surfaces

• Keep the water tank filled and the coolant additive at the correct level; change the water as the manual specifies.
• Use these burs only for lithium disilicate and glass ceramics, never zirconia.
• Clean the grinding chamber and chuck area of sludge regularly.
• Store spare burs in their packaging so the diamond surface is protected.
• Do not reuse a bur that was dropped or has a chipped tip.

Common CEREC 3 grinding problems

• Chipped margins: worn burs or low or dirty coolant.
• Cracks or burn marks: not enough coolant or a dull bur generating heat.
• Broken bur: a worn bur kept in use, a bur not tightened correctly or sludge in the chuck.
• Poor fit: a worn step bur on the inner surface; replace it and calibrate the unit.

Eagle burs, not original tools

These are compatible Eagle burs, not original manufacturer tools. Machine names and REF numbers are listed only to show which units and tool positions they fit.

Order CEREC 3 milling burs online

Choose a bur type or a bundle above and add it to your cart. For burs that fit other CEREC units, browse all our CEREC milling burs.