Cavalry C9372 Heavy Duty Disc and Drum Brake Lathe Machine

The Cavalry C9372 Heavy Duty Disc and Drum Brake Lathe Machine takes a fundamentally different engineering approach compared to traditional brake lathes. Where conventional machines rely on mechanically-driven transmissions and gear boxes with their inherent complexity and maintenance requirements, the C9372 employs precision electric DC servo motors designed specifically for demanding industrial motion control applications. This servo-driven architecture delivers responsive, precise control over both spindle and cross-feed movements while reducing the mechanical components that typically wear out or require adjustment on gear-driven machines.

The C9372's servo motor configuration provides distinct advantages for brake component resurfacing. The motors deliver smooth, consistent power across the entire operating range, enabling technicians to achieve fine surface finishes that are difficult to obtain with mechanically-driven systems. The electronic control of feed rates and spindle speeds eliminates the vibration and chatter that mechanical gear trains can introduce into the cutting process, resulting in smoother surfaces and more consistent machining results.

Infinitely variable spindle speed settings from 70 to 320 RPM give operators unprecedented control over cutting parameters. This wide speed range allows technicians to select the precise rotational speed for each specific workpiece, considering factors like diameter, material condition, and desired surface finish. The ability to dial in exact speeds means operators are not limited to fixed speed steps—they can select the optimal speed for each unique job.

The feed system provides infinitely variable rates from 0 to 0.026" (0-0.66mm/r) for both rotor and drum work. Operators can increase feed rates for efficient rough cuts or reduce them for precision finish passes, all with simple dial control. This flexibility allows technicians to optimize each cutting operation for speed, surface quality, or tool life as the job requires.

The C9372 handles a broad range of workpieces with rotor diameters from 4" to 20" (102-508mm) and maximum thickness of 2.85" (73mm). Drum capacity extends to 19.5" (500mm) with 6.5" (165mm) depth, and flywheel capacity matches the rotor range. The spindle supports 150lbs (68kg), handling heavy-duty components. Serpentine belt drives provide quieter operation while reducing vibration transmission. The machine dimensions of 1100x730x720mm with 300kg gross weight provide a stable platform for heavy-duty work.

Product highlights

DC Servo Motor Drive System
The C9372 distinguishes itself from conventional brake lathes through its precision DC servo motor drive system. Unlike mechanically-driven transmissions and gear boxes that introduce complexity, wear points, and vibration, the servo motors deliver direct, responsive power to both spindle and cross-feed drives. This engineering choice reduces maintenance requirements and provides the smooth, consistent power needed for superior surface finishes.

Infinitely Variable Spindle Speed Control
Operators have continuous speed adjustment from 70 to 320 RPM, allowing precise matching of cutting speed to workpiece requirements. This wide range covers everything from slow rough cuts on large diameter workpieces to higher speed finish passes on smaller components. The variable speed capability means technicians can select optimal speeds for different materials and conditions rather than being limited to fixed speed steps.

Infinitely Variable Feed Rate Control
Feed rates adjust continuously from 0 to 0.026" (0-0.66mm/r) for both rotor and drum operations. This allows operators to set the ideal feed rate for each specific job—increasing feed for efficient rough cuts or reducing it for precision finishing passes. The dial control makes adjustments quick and intuitive, reducing setup time between different job types.

Serpentine Belt Drive System
The C9372 uses serpentine belts that provide faster, quieter operation compared to conventional V-belt or gear drives. The belt design reduces vibration and chatter transmission to the cutting interface, which directly improves surface finish quality. The quieter operation improves workshop working conditions, particularly in busy service environments where multiple machines operate simultaneously.

High-Precision Twin Cutter System
Twin cutters machine both sides of a disc simultaneously, reducing processing time and ensuring consistent finish across both faces. The quick drum-to-disc changeover system minimizes setup time when switching between different component types. The cutter design supports efficient workflow in high-volume service environments where technicians frequently alternate between disc and drum work.

Cost-Effective Carbide Blades
Triangle cutting blades with positive rake angle and double-sided design provide six cutting edges per blade. Each blade set delivers approximately 80-100 disc repairs, representing significant cost savings over time. The positive rake geometry contributes to efficient cutting action and reduced cutting forces, extending both tool and machine life.

Versatile Workpiece Capacity
With rotor diameter capacity from 4" to 20" (508mm) and drum capacity from 6" to 19.5" (500mm), the C9372 handles components ranging from small passenger car rotors to large heavy-duty truck drums. The 2.85" (73mm) maximum rotor thickness accommodates vented and heavy-duty rotors found on commercial vehicles.

Quick Changeover Capability
The C9372 includes a variety of adapters for machining discs and drums of different sizes. The quick drum-to-disc changeover system reduces downtime between job types, increasing service capability in busy workshops. The adapter system simplifies mounting and reduces setup complexity.

Adapter