Branson Ultrasonic Core Drills

Branson Ultrasonic Core Drills

• “Branson Ultrasonic Core Drills” refers to diamond‐core drills designed to be used with Branson ultrasonic drilling machines. These are specialty tools for drilling or coring in hard, brittle, or delicate materials using ultrasonic action.
• They are often “mounted core drills”—that is, the diamond core drill piece is mounted on a holder or mount (e.g. Branson mount, ER-11 collet mount) to be held in the ultrasonic machining setup.
• Materials they’re used on include: ceramic, quartz, silicon, sapphire, glass, silicon nitride, carbon fiber, stone.

 

Specifications

• Mount Types: Branson mount, ER-11, etc. The mounts allow secure, precise mounting to the ultrasonic machine.
• Custom Tool Design: Tools can be made for outside diameter (OD), inside diameter (ID) core drills, disintegrating drills, slotted, stepped drills, profile tools (radius, chamfer, etc). They are quoted custom if needed.
• Tolerance & Size Range: The standard tolerances for diamond core drills are tight—often ±.0005″ (≈12.7 µm) on ID/OD for drills 2″ and under. Sizes range quite broadly; Braemar (the maker) can make very large drills.
• Wall Thickness & Bonding: For smaller drills (≤3″), standard wall thickness is ~0.030″. Bond material: metal bond with natural or synthetic diamonds; diamond grit size is specified depending on application (coarse for faster stock removal, finer for better finish)
• Cooling / Coolant Flow: Good coolant flow is important; many drills are designed with coolant channels or ways to evacuate debris (swarf) to avoid overheating / chipping.

 

Advantages

• Cleaner, more precise holes in hard or brittle materials. Because ultrasonic drilling applies vibration + abrasive, it reduces stresses and cracking vs normal rotary drilling.
• Particularly useful in materials that are difficult with conventional drills: ceramics, sapphire, silicon, etc.

 

Consider

• These drills are specialized and costly, especially when custom sizes, profiles, or tight tolerances are needed.
• Proper mounting and alignment is crucial. Vibration misalignment or poorly secured mounts leads to rapid wear or damage.
• Coolant / debris removal is necessary; without good coolant flow the drill can clog, overheat, chip.
• Diamond grit and bond need to be chosen carefully: coarse grit cuts faster but can leave rougher finish / more damage. Fine gradations cost more and may cut slower.
• For deeper cores or larger diameters, maintaining concentricity and avoiding drift (walking) becomes harder.

 

Materials

 

• Ceramic
• Quartz
• Silicon
• Carbon fiber
• Sapphire
• Glass
• Silicon nitride
• Stone

Mounting & Customization:
These drills come mounted on a 0.375-24 Branson mount compatible with ultrasonic drilling systems. They can be customized to fit any OD (outer diameter) or ID (inner diameter) drill size, and are available in various forms including disintegrating, slotted, stepped, chamfer, and radius tools. Provide a print and we will quote it within 24 hours.

Call (480) 966-9311 or Add to Quote for pricing.