Reclaiming and Soil Stabilization


Aftermarket Drum Manufacturing - Keystone will design and build any reclamation, mixing, and soil stabilization drums to meet any specification or specific need.

Keystone's Asphalt Reclaiming/Mixing Drum - Designed for improving asphalt reclaiming and soil stabilization gradation. The drum's lacing pattern provides a mild mixing action providing a better blended product than industry standard drums.

Keystone's Continuous Cut Mixing Action - Designed for improving gradation in soil stabilization by mixing the material vigorously back and forth. The most vigorous mixing drum available.

Industry Standard Chevron or Random Pattern Drums - Keystone can manufacture reclaiming and stabilization drums to meet any specification


Block and Tooling Systems

Quick-Change Block Systems

Wedge Lock Quick-Change System

  • Interchangeable blocks for different reclaiming or stabilization applications. Vary the gradation and/or blend of material in the field by using Keystone’s interchangeable double or triple blocks.
  • 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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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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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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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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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 Reclaiming and Stabilizing Attachment


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 reclaiming machines. Please call Keystone direct to discuss your gearbox 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 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 can not be welded, but can be cut to size with a plasma cutter.