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Rotary Motor Large Hollow

Model Selector(unit:mm)

Diameter:
  • 280
  • 348
  • 400
Rotor:
  • Internal Rotor
Height:
  • 145mm
IP Rating*:
  • IP 40
Cooling Type*:
  • Self-cooled
Brake Type*:
  • None
Cable Outlet:
  • Side
Encoder Code:
  • Absolute encoder
  • Incremental encoder
Hollow Shaft Diameter:
  • 113mm
Extension Cable:
1M
  • 1M
  • 2M
  • 3M
  • 5M
  • 7M
  • 10M
  • N
  • None
End-face runout:
Rotor:
  • Internal Rotor
Height:
  • 45mm
  • 80mm
IP Rating*:
  • IP 40
Cooling Type*:
  • Self-cooled
Brake Type*:
  • None
Cable Outlet:
  • Side
Encoder Code:
  • Absolute encoder
  • Incremental encoder
Hollow Shaft Diameter:
  • 170mm
  • 124mm
Extension Cable:
1M
  • 1M
  • 2M
  • 3M
  • 5M
  • 7M
  • 10M
  • N
  • None
End-face runout:
  • 10μ
Rotor:
  • Internal Rotor
Height:
  • 75mm
  • 130mm
IP Rating*:
  • IP 40
Cooling Type*:
  • Self-cooled
Brake Type*:
  • None
Cable Outlet:
  • Side
Encoder Code:
  • Absolute encoder
  • Incremental encoder
Hollow Shaft Diameter:
  • 220mm
  • 130mm
Extension Cable:
1M
  • 1M
  • 2M
  • 3M
  • 5M
  • 7M
  • 10M
  • N
  • None
End-face runout:
  • 10μ
Selected Model:
Approx. Weight:
  • Product Detail
  • TDI-280
  • TDI-348
  • TDI-400
How To Order
Spec Index
Applications
How To Order

TKL Product Structure1

Spec Index

TKL Spec index1 TKL Spec index2

Applications

TKL Product Structure2

rotary motor Series Electromagnetic induction

Inner Structure

Rotary Motor with Brake

Product Principle

A rotary motor consists of a rotor and stator. The rotor is the load itself or directly connected to the load, and is equipped with permanent magnets. The stator is fixed to the base and contains multiple coils. Based on the electromagnetic principle, energizing the coils generates a rotating magnetic field, which directly drives the permanent magnet rotor to rotate. The rotor speed is determined by the frequency of the applied current, while its position is controlled by the phase of the current.

Product Advantages

1. Extra-large through-bore

The large central opening provides sufficient internal space for shafts, cables, pneumatic tubes, vacuum lines, rotary unions, and other components to pass through the motor. This allows the rotary axis to accommodate more complex machine structures without occupying additional external space.

2. Simplified cable and pipeline routing

Electrical cables, pneumatic lines, vacuum tubing, and other service lines can be routed through the center of the motor instead of around the outside of the rotary mechanism. This reduces interference with moving components and creates a cleaner and more organized machine layout.

3. Space-saving mechanical integration

The hollow structure allows the motor and surrounding machine components to be arranged more efficiently around the rotary axis. By reducing the need for external routing structures, it helps minimize the overall footprint of the rotary system.

4. Flexible machine design

The large through-bore provides greater freedom when integrating shafts, fixtures, sensors, rotary connectors, and other components. This makes the motor particularly suitable for machines with complex central-axis structures and multiple integrated functions.

5. High torque with large hollow diameter 

The motor combines a large hollow bore with strong direct-drive torque output, providing both mechanical integration flexibility and high rotary performance. This allows designers to achieve large central openings without giving up the benefits of direct-drive operation.

 
Rotary Motor Large Hollow

Rotary Motor Large Hollow

Extra-large hollow bore rotary motors are designed for applications where a large central opening is required for mechanical integration and internal routing. The hollow structure allows shafts, cables, pneumatic and vacuum lines, rotary unions, and other components to pass directly through the center of the motor, significantly increasing the flexibility of machine design. Compared with conventional solid-shaft rotary structures, the large through-bore can reduce external routing, minimize interference between moving components, and help create a cleaner and more compact equipment layout. At the same time, the direct-drive architecture provides high torque, zero mechanical backlash, and precise rotary positioning without the need for a reducer. These features make large-bore rotary motors particularly suitable for semiconductor equipment, wafer handling systems, rotary tables, inspection machines, dispensing equipment, and other automated systems requiring complex central-axis integration.

large hollow-Specification Table 280145-P
large hollow-Specification Table 348045 348080
large hollow-Specification Table 400075 large hollow-Drawing3