Belt Driven Milling Spindles
Belt-driven milling spindles crafted for consistent, precise, and high-speed machining
Unlock precision and power with Capital Belt Driven Milling Spindles — engineered for vibration-free milling, stable torque transfer, and long operational life. Ideal for CNC milling machines, SPMs, and retrofitting old milling machines, our spindles handle both heavy-duty and high-speed precision milling across steel, aluminum, brass, and cast iron.
With over 30 years of spindle manufacturing expertise, Capital delivers reliable belt driven spindle technology for the most demanding industrial environments.
Applications of Belt Driven Milling Spindles
Capital belt driven spindles are used for:
- Face milling, slotting, and profiling in tool rooms
- Custom SPMs for drilling, milling, and tapping
- Retrofitting old milling machines with precision spindles
- Vertical or horizontal milling heads
- Compact machines where motorized spindles are not viable
Trusted across industries like automotive, tool & die, metal fabrication, aerospace, and machine tool manufacturing.
Technical Specifications – High-Performance Belt Driven Milling Spindle
Each spindle is designed for optimal stability and performance:
- Speed Range: Up to 28,000 RPM (via external motor + pulley)
- Power Handling: 1 HP to 20 HP (motor-dependent)
- Pulley Type: Flat belt / V-groove / Poly-V custom configuration
- Tool Holding: BT/ISO Taper, ER Collet, or Custom Nose
- Bearings: Precision Angular Contact or Ceramic Hybrid
- Runout: ≤ 5 microns at tool nose
- Mounting: Cartridge-type / Flange-type / Custom
We manufacture spindle diameters from Ø40 mm to Ø300 mm based on machine type and job load.
Why Choose Capital Spindles?
At Capital Spindles, we take pride in being one of India’s leading spindle manufacturers, with a legacy of 30+ years in precision engineering. Every spindle we produce reflects our commitment to quality, reliability, and innovation, making us a trusted partner for industries across India and worldwide.
- Made in India, Export-Grade Quality – All our spindles are manufactured in India under strict quality standards, yet designed to meet global benchmarks. This ensures our products are equally suitable for domestic markets as well as international exports.
- In-House Balancing on Schenck Machines – Each spindle undergoes dynamic balancing on world-class Schenck systems, ensuring minimal vibration, smoother operation, and extended spindle life.
- Precision Grinding with Studer CNC Grinders – By using advanced Studer CNC grinding technology, we achieve micron-level accuracy and superior surface finish, critical for high-performance machining.
- Trusted by Industry Leaders – Our spindles are supplied to leading OEMs, retrofitters, and SPM builders, who rely on our products for their durability and consistent performance.
- Custom-Built Solutions – Every spindle is designed and manufactured to match your exact machine configuration and job requirement, covering parameters like RPM, torque, power rating, and tool-holding system.
- Flexible, Low-Volume Production – We specialize in made-to-order spindles, even in small quantities, ensuring you get the right solution without compromising on quality or performance.
Spindle Repair, Rework & Retrofitting Services
Have an existing belt driven milling spindle that’s underperforming?
We offer complete repair services, including:
- Bearing replacement & preload adjustment
- Shaft regrinding, taper repair, or hard chrome coating
- Pulley rework and balancing
- Housing modifications or liner repairs
- Reassembly and performance testing
- Warranty-backed repairs with fast turnaround
We also help retrofit old vertical/horizontal milling machines with upgraded belt driven spindles.
Custom Spindles for SPMs & OEMs
Capital Spindles specializes in custom design and manufacturing for:
- Multi-head spindle units
- High-rigidity spindles for heavy milling
- Compact spindles for robotic arms or gantry systems
- Tailor-made mounting flanges and tool interfaces
- Optional coolant-through-shaft configurations
Each spindle is modeled in 3D CAD, balanced dynamically, and tested thoroughly before dispatch.
Get Your Belt-Driven Milling Spindles Today
Boost your milling operations with precision belt-driven milling spindles. Contact the experts at Capital Spindles India Pvt. Ltd. for spindle repair, custom spindle design, and spindle manufacturing. With our global reach, we provide high-quality spindle solutions worldwide and are ready to offer a no-obligation quote for your next project.