Belt Driven Spindles: Rugged & Reliable

Construction Overview

Belt-driven spindles use external motors connected by V-belts or flat belts. They are ideal where motor selection and heat separation are critical.

Advantages:

Easier maintenance
Cost-effective
Flexible motor options

Types of Belt Driven Spindles

Internal Grinding Spindles

RPM Range: 12,000 – 45,000 RPM
Mounting: Flange / Foot
Compact construction for internal bore grinding

External Grinding Spindles

Used in tool room cylindrical and surface grinders
Higher torque with robust bearing support

Milling / Drilling / Turning Spindles

Custom-designed for horizontal and vertical machines
Compatible with CNC retrofits

Belt vs High-Frequency Spindle Comparison

Feature	Belt Driven	High Frequency
Speed Range	6,000–45,000 RPM	18,000–125,000 RPM
Heat Management	External	Internal (requires cooling)
Maintenance	Easy (belt change)	Complex (motor inside)
Initial Cost	Lower	Higher
Space Requirement	More	Compact