Milwaukee Spline Bit 4-Cutter 1-1/8" x 22"
SKU 48-20-4390
Model Number: MIL48204390
Availability Notice:
Availability to purchase does not guarantee immediate stock. Our site displays items we stock along with items we have the access to source for our customers. Some items may have extended lead times. Questions about availability? Contact our team before ordering.
HEAVY-DUTY REBAR PENETRATION
For the fleet manager focused on minimizing downtime and maximizing asset ROI, the Milwaukee 48-20-4390 Spline 4-Cutter Rotary Hammer Bit represents the gold standard in heavy-duty masonry drilling. Engineered to withstand the relentless impact of spline-drive hammers, this bit features a precision-ground 4-cutter head that ensures holes remain perfectly round—critical for high-integrity anchor sets. The robust design mitigates the risk of lock-up when striking rebar, a common point of failure that can lead to motor burnout and jobsite delays.
- / SYMMETRIC 4-CUTTER GEOMETRY: Prevents the bit from binding or wandering when encountering embedded steel reinforcement.
- / REBAR PROTECTION CHAMFERS: Reinforced carbide tips act as a shield to prevent shattering during high-impact strikes.
- / ENHANCED DEBRIS CHANNELS: High-volume flute design accelerates the removal of dust and aggregate, keeping the bit cool.
- / SPLINE SHANK INTEGRITY: Optimized for maximum torque transmission in legacy high-power rotary hammers.
TECHNICAL SPECIFICATIONS
Diameter: 1-1/8 in.
Drilling Depth: 17 in.
Overall Length: 22 in.
Shank: Spline
Cutter Type: 4-Cutter Carbide
Applications: Concrete, Rebar, Brick, Block
Drilling Depth: 17 in.
Overall Length: 22 in.
Shank: Spline
Cutter Type: 4-Cutter Carbide
Applications: Concrete, Rebar, Brick, Block
WHAT'S IN THE BOX
(1) 1-1/8 in. x 17 in. x 22 in. Spline 4-Cutter Rotary Hammer Drill Bit (48-20-4390)
