Product Description
Milwaukee SDS Max Bit 9/16 in. x 21 in.
Model Number: 48-20-3912
The Milwaukee 48-20-3912 is an SDS Max rotary hammer drill bit in 9/16 in. diameter with a 21 in. overall length — an extended ultra-deep-reach configuration for the SDS Max platform at the 9/16 in. diameter for the most demanding structural anchor installations and thick-wall penetrations where the highest SDS Max impact energy is needed at extreme working depth. SDS Max bits deliver substantially higher impact energy per stroke than SDS+ bits of the same diameter, making SDS Max the appropriate platform for the hardest commercial concrete conditions at large diameters where SDS+ energy levels are limiting. The 21 in. overall length provides the maximum working reach for through-penetrations in the thickest structural concrete sections, deep foundation walls, and extra-deep embedment structural anchor installations specified for the highest available pull-out load ratings.
Milwaukee engineers SDS Max carbide bits with optimized flute geometry for effective concrete debris evacuation at the large diameter over the extended working depth — at 9/16 in. bore, the flute cross-section provides adequate debris transport capacity per unit length, and the 21 in. extended length requires careful flute pitch calibration to maintain continuous hole clearing from the deepest point of the bore throughout production drilling without the choking that would interrupt operation pace. The SDS Max shank provides the positive anti-rotation locking and high-energy impact transmission that sustained deep-anchor drilling at large diameters in hard commercial concrete demands. This is a specialty configuration for applications specifically requiring 9/16 in. diameter at extreme working depth beyond all shorter SDS Max configurations.
See Milwaukee's complete SDS Max carbide bit lineup for all available diameters and lengths for the full range of heavy concrete drilling applications.
Features
- SDS Max platform for maximum impact energy in hardest commercial concrete conditions
- 9/16 in. for specific structural anchor systems requiring this exact bore diameter
- 21 in. overall length for deepest structural embedments and thick-wall penetrations
- Optimized fluting for debris evacuation through full extended working depth
- SDS Max shank for high-energy impact and positive anti-rotation locking
Specifications
- Diameter: 9/16 in.
- Overall Length: 21 in.
- Shank: SDS Max
- Tip: Carbide
Includes
- (1) Milwaukee 48-20-3912 SDS Max Bit 9/16 in. x 21 in.
