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AMMCO® Brake Lathe 4100B Combination Disc and Drum

  Ammco Brake Lathe 4100B MODEL #: 4100B          PART #: 904100B  
  Medium-Duty Lathe for Brake Drums and Rotors, Less Adapters, 110V, 60Hz (Must be Purchased with a Bench Lathe Adapter Kit)  
  AMMCO® Brake Lathe 4100B Combination Disc and Drum  
  The AMMCO® 4000B Combination Disc and Drum Brake Lathe has been professionals' first choice for more than 50 years.  

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Simplicity, Speed, and Precision

The 4100B expands on the 4000B, initially introduced four decades ago. Since then, it has been the primary choice for brake technicians who manage a large quantity of medium-duty trucks. And for good reason. It's simple. It's fast. It's very precise. The speed control allows technicians to fit in more customers each day without loss of quality finish. And the added 9.875" of drum capacity doesn't hurt.


The AMMCO® 4100B Combination Disc and Drum Brake Lathe is the top pick for wider brake assemblies. Take the same basic design and features of the AMMCO® 4000B, but pack it with an additional spindle travel of 9.875" (250.83mm), and you'll get the 4100B.


Weight (lbs)





Car & Medium Truck





Max Rotor Diameter


Max Rotor Face Width


Standard Max Arbor Capacity

100 lbs.

Heavy Duty Max Arbor Capacity

200 lbs

Max Rotor Thickness


Flywheel Service Capable


Spindle Bearings

Bronze Sleeve


1 HP

Tool Bits (shipped with)

Negative Rage

Double Taper Arbor


Spindle Speed

60,80,115 RPM

Drum Feed Rate

.002" to .020"/REV

Max Drum Depth


Rotor Feed Rate



 Key Features

  • Ideal for medium-duty truck service.
  • Extended spindle increases drum capacity to 9.875".
  • Three adjustable spindle speeds (if desired) allow for fast turning of small pieces and high-quality turning of larger ones.
  • Two feed rates allow for quick rough-cut and finer finish-cut settings.
  • Speed control gives operators a quality finish in less time.
  • Adjustable-bar twin cutter provides the greatest range of settings from small cars to 5-ton applications
  Documentation:   Operation Manual Product Brochure  
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