High-Speed Motor Spindles

Integral Motor Spindles for Grinding Machines and CNC Machining Centers

LPR Global provides precision machine tool spindles with diameters of 60-230 mm and speeds up to 125,000 rpm for grinding, milling, and drilling machines. We manufacture a wide range of custom integral motor spindles and belt-driven spindles using hybrid ceramic ball bearing, air bearing, and hydrostatic bearing designs.

 

Motorized spindles are widely used as replacements for the main spindle by CNC machine tool manufacturers and machine rebuilders. We serve major players in the automotive, bearing and electronics industries, such as Hyundai, Delphi, Schaeffler, GMB, LG, Apple, and Samsung. Our ISO 9001-certified plant in South Korea invests heavily in developing long-lasting, high-performance bearings and shafts, and holds five patents related to spindle design.

Machine Tool Spindles for Milling, Grinding, Drilling & Routing

 

LPR Global designs and manufactures customized motor spindles for a wide range of machining processes including milling, grinding, drilling and tapping, boring, engraving, and deburring. Hybrid angular contact ball bearings and air bearings are used to enable greater stiffness, longer service life, and faster speeds. Our engineers have 30+ years of experience producing powerful and reliable spindle designs, paying special attention to shaft strength, bearing lifespan, and minimizing vibrations.

 

We produce custom-built motor spindles with various sizes, torques, and speeds, suited for all applications such as high precision machining, mass production of parts, and testing and measurement systems. Our clients come from diverse industries like automotive, aerospace, mold & die, semiconductor, and industrial manufacturing.

 

Contact us with your requirements for customized spindles, or check out our popular spindle designs.

Motor Spindle Features

  • Liquid-cooled spindles with water or oil-based coolants
  • Grease, oil mist or air lubrication
  • Through-spindle coolant system
  • Compatible with HSK, BT, PC, ISO, MT, SK, and CAT tapers

Recent Projects

  • Quartz machining spindle for the semiconductor industry
  • ID/OD grinding spindle for bearing grinding machines
  • Milling and grinding spindles for automotive parts supplied to Hyundai WIA
  • Engraving spindles for CNC engraving machines

Motorized Milling Spindles

Milling Spindles SpecificationsPDF Icon

Machine tool spindles in sizes 80 to 230 mm that we offer are used for milling, drilling, tapping and deburring. They contain hybrid ceramic ball bearings and built-in motors, providing a long service life and minimal vibration. Optional features include through-spindle coolant systems, oil mist lubrication, encoders, and temperature sensors.

Motorized Milling Spindle

Motorized Grinding Spindles

Grinding Spindles Specifications PDF Icon

Grinding spindles are available in sizes 60-30 mm, with a speed range of 3,000 to 60,000 RPM, and motor power up to 25 kW.

 

LPR Global’s spindles are widely used by grinding machine manufacturers for cylindrical grinding, ID/OD grinding, surface grinding and tool grinding. Applications include grinding bearings, collets, wheel dressers, quartz and glass materials, automotive parts, aerospace parts, and smartphone components.

Motorized Grinding Spindle

Tool Grinding Machine Spindles

Tool Grinder Spindles Specifications PDF Icon

Work Head Spindle
Rough Grinding Spindle
Rough Grinding Spindle Motor
Finish Grinding Spindle

Work Head Spindle

Model: SW110-W
Housing Diameter (mm): 110
Speed (max. RPM): 5,000
Taper: MT5
Tool Change: Manual

Rough Grinding Spindle

Model: SW100-284-R
Housing Diameter (mm): 100
Speed (max. RPM): 6,000
Taper: Straight
Tool Change: Manual

Rough Grinding Motor

Model: SW180-6085-R
Housing Diameter (mm): 180
Power (kW): 8.5
Speed (max. RPM): 6,000
Taper: Straight
Tool Change: Manual

Finish Grinding Spindle

Model: SW120-8014-F
Housing Diameter (mm): 120
Power (kW): 1.4
Speed (max. RPM): 8,000
Taper: Straight
Tool Change: Manual

Air Bearing Spindles for Precision Machining

Air Spindles Specifications  PDF Icon

For high precision processing, our air spindles are ideal for micro-machining of small parts, die finishing, PCB drilling, glass grinding, and wafer fabrication. By replacing mechanical contact with pressurized air, they provide high rotation speeds, minimal vibration, reduced heat generation, and high load capacity, with contamination-free operation and long tool life.

Air Bearing Spindle
Air-Spindles-SW62A-1005-E11

Model: SW62A-1005-E11
Housing Diameter (mm): 62
Power (kW): 0.5
Speed (max. RPM): 100,000
Taper: ER11
Tool Change: Manual

Air Spindles-SW62A-1251-E11

Model: SW62A-1251-E11
Housing Diameter (mm): 62
Power (kW): 1.0
Speed (max. RPM): 125,000
Taper: ER11
Tool Change: Manual

Air Spindles-SW62A-1005-PC6

Model: SW62A-1005-PC6
Housing Diameter (mm): 62
Power (kW): 0.5
Speed (max. RPM): 100,000
Taper: PC6
Tool Change: Automatic

Air Spindles-SW62A-1251-PC6

Model: SW62A-1251-PC6
Housing Diameter (mm): 62
Power (kW): 1.2
Speed (max. RPM): 80,000
Taper: PC6
Tool Change: Automatic

Belt-Driven Spindles

Custom Milling and Grinding Spindles

We design a wide variety of custom spindles based on our customers’ requirements. The list below showcases some of our popular designs that are mass-produced in our plant in South Korea.

 

Custom Milling and Grinding Spindles Specifications PDF Icon

CNC Spindle Videos | High Speed Grinding, Milling, Drilling & Tapping

Cylindrical Grinding Spindle

High Speed Milling Spindle

Drilling and Tapping Spindle

CNC Router Spindle

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