Milling and Recycling

Keystone is the premier drum and block system manufacturer for milling machines. Keystone manufactures replacement drums for all makes and models of milling machines and has the large selection of block systems available to meet any need. Let Keystone's 30 years of experience in asphalt milling work for you.


Aftermarket Drum Manufacturing - Keystone will design and build any OEM milling drum to meet any specification or specific need.

Standard Milling - Keystone manufactures a large variety of standard milling drums to meet any need or budget. Keystone's Wedge Lock System is the most durable Quick-Change system on the market. The Wedge Lock System is designed to last the life of the milling machines with no costly "rebuilds" required.

Micro Milling and Fine Milling - Keystone can design and manufacture to meet any micro milling or fine milling specification. Keystone offers a large variety of block systems including the Wedge Lock System which is the only Quick-Change system to give contractors the ability to standard mill and micro mill with the same drum.

Additional Information on Micro Milling and Fine Milling

Flat Tooth Milling - Keystone developed Flat Tooth Technology for when any spacing, including micro milling, is too large. The Flat Tooth System cuts 100% of the asphalt’s surface and is ideal for bump grinding, line and coatings removal.

Rumble Strip Grinding- Keystone manufactures replacement drums for all makes and models of rumble strip machines.

Custom Lacing - For anything that may fall in between. Please contact Keystone direct to discuss your specific need.


Block and Tooling Systems

Wedge Lock Quick-Change System

  • Interchangeable blocks for different cutting applications transform a standard milling drum into a micro-mill drum, simply change the holders to achieve a 7.5mm/.3” and even a 5mm/.2” surface pattern
  • Replaceable blocks are positioned on the wear side of the flighting which protects the flighting against wear
  • No threaded parts are welded to the drum providing a longer lasting drum
  • Continuous wrap design provides superior strength
  • Wedge Lock Systems with over 18,000 hours are still in use today
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The Big Easy Quick-Change System
  • Easy bit removal with access to the bit from the back of the block
  • Easy holder removal - unscrew holder with standard tools, no hydraulic presses or special tools required
  • Continuous Wrap Design—Keystone’s patented block to block welding technology insures superior strength
  • Taper on taper design provides a consistent holder locking depth, providing a consistently smooth milled surface pattern
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One Lock Quick-Change System
  • Easy bit removal with access to the bit from the back of the holder
  • Continuous wrap design for superior strength
  • Replaceable bit holders are positioned on the wear side of the flighting which
    protects the flighting against wear
  • No threaded parts are welded to the drum providing a longer lasting drum
  • The replaceable bit holders are not tapered, reducing the locking force and making
    the holders quick and easy to change out
  • Only one bit holder used, eliminating the need to stock multiple holders
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NT Big Easy Quick-Change System
  • Easy bit removal with access to the bit from the back of the block
  • Easy holder removal
  • No threaded parts are welded to the drum
  • providing a longer lasting drum
  • Double taper lock system locks the insert into place
  • insuring proper attack angles are held and maintained
  • throughout multiple changes
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Easy Screw System Quick-Change System
  • Easy bit removal with access to the bit from the back of the block
  • Easy holder removal-unscrew holder with standard tools, no hydraulic
    presses or special tools required
  • Taper on taper design provides a consistent holder locking depth, providing
    a consistently smooth milled surface pattern
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Flat Tooth System

 
  • Can serve as a substitute for a diamond ground surface
  • Leaves a flat and smooth surface pattern without ridges or grooves
  • The bit’s design eliminates surface damage seen with conical milling bits
  • Completely machined bit and block insures uniform
  • surface pattern
  • The compound taper locking system pulls the bit in and down for precise alignment
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Weld-On Block Systems

Heavy Duty Welded
  • Bigger than any other welded block on the market
  • Side wear tabs designed to deflect material
  • Indicator pins assure exact relocation of the bit holder
  • Large weld chamfers for strength
  • Profile designed to increase cutting efficiency and improve material flow
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Industry Standard Blocks - Keystone can supply most industry standard block systems


Asphalt and Concrete Grinding Attachments

Flatliner - Asphalt Bump Grinder and IRI Improvement

Skid steer attachment designed to smooth pavement roughness by shaving high spots and other irregularities in a cost effective manner. The Flatliner uses Flat Tooth Technology, a machined and precise holder system to insure a smooth and uniform surface, setting a new industry standard.

  • Maintenance Work/Bump Grinding
  • Ride Quality/IRI Improvement
  • Pavement Marking Removal
  • Coatings Removal
View Flatliner Video
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View Flatliner 11x17 Product Card

Keysaw - Asphalt and Concrete Saw

Skid Steer Saw/Cold Planer Attachment Designed for Cutting Concrete

  • Asphalt and Concrete Sawing
  • Partial Depth Concrete Repair
  • Micro-Trenching
  • Longitudinal Joint Repair
Keysaw Video
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Flatliner Line Remover - Pavement Marking Removal Attachment
  • Optional self-contained vacuum system
  • 100% surface coverage to eliminate the need for multiple passes during pavement marking removal
  • Shaves the pavement’s surface instead of impacting the surface like traditional carbide conical bits that are used in asphalt milling machines
  • Minimized surface damage during pavement marking removal. Far less damage seen by the Flat tooth System than by water blasting equipment and traditional asphalt grinding products
  • Leaves a level and smooth surface unlike a milled surface or a diamond ground surface
Flatliner Video
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View Flatliner 11x17 Product Card

V-Head - Joint Repair Attachment

Skid Steer Attachment Designed for Longitudinal Joint Repair

  • Remove and replace at deeper depths on the joint line or other targeted areas
  • Requires less material
  • Cuts a V-shape into the pavement that allows the new material to bond better to the existing
    pavement
  • The tapered cut alleviates the shearing effect that is seen with the flat surface cuts
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Reclaiming and Stabilization Attachment

Traffic Loop Cutting Attachment

Manhole Trimmer


Carbide Bits - Keystone has a large selection of carbide bits in stock. Please call Keystone direct to discuss the best bit for your milling application. 317-271-6192

KEM-6 - Carbide Milling Bit

Bit Designed for Medium to High Horsepower Milling Machines

  • Patented non-rotating washer used to prevent block/holder face wear
  • Universal cutting bit that can be used on all OEM drum systems
  • Extended retainer for even block/holder wear
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KEM-7 - Carbide Milling Bit

Bit Designed for Medium to High Horsepower Milling Machines

  • Patented non-rotating washer used to prevent block/holder face wear
  • Universal cutting bit that can be used on all OEM drum systems
  • Extended retainer for even block/holder wear
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Planetary/Gearbox Sales and Service - Keystone has a large selection of gearboxes in stock for all milling machines. Please call Keystone direct to discuss your gearbox options. 317-271-6192


Track Pad and Conveyor Belt Sales - Keystone has a large selection of track pads and conveyor belts for all milling machines. Please call Keystone direct to discuss your track pad and conveyor belt options. 317-271-6192


Wear Protection Products - Keystone offers a variety of wear protection products to minimize equipment downtime.

Wear Patch - An excellent solution to abrasive wear problems. Wear Patch comes in a variety of shapes and sizes and can be easily cut with a torch to fit irregular shaped areas. Wear Patch is easily installed on any flat metal wear surface using Mig wire. Wear Patches are through-hardened to 60-63 Rockwell C for superior wear life.

Wear Plates - Provides a simple solution for rectangular shaped high wearing pieces. Wear Plates are available in multiple sizes and in thickness from .375" to 1.000". Wear Plates have customizable holes cast in place for bolt or weld washer installation. Wear plates cannot be welded, but can be cut to size with a plasma cutter.