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Internal Gear

Custom one-stop internal gear solution for your different applications
Custom internal gears made to your drawings or samples or technical specs
In-house internal gear manufacturing and inspection from raw material to finished gear
Complete set of internal gear quality inspection reports
Consistent quality from prototype to mass production
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power-skiving-gears-internal-ring-gear-for-planetary-gearbox

Why Choose BELON As Your Internal Gear Manufacturer

 

As one of the leading internal gear manufacturers in China, BELON produces custom internal gears with precise tooth geometry and consistent quality tailored to different transmission applications.

BELON provides a wide production scope for internal gears ranging from Module 0.2 to heavy-duty Module 45. We utilize a variety of advanced manufacturing methods, including powder metallurgy, gear shaping, gear broaching, power skiving and gear grinding. From prototype samples to mass production, we keep gear quality consistent and control machining, heat treatment, gear finishing, and inspection to maintain stable performance across every batch.

Whether you need internal gears for planetary gear systems, reducers, or other compact transmission assemblies, our engineering team can work from drawings, samples, or application requirements to make the best gear design and manufacture strictly to your drawing/sample/technical specs. With flexible production capabilities and rigorous quality control, BELON aims to be your long-term internal gear manufacturing partner—not just a one-time supplier.

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Internal Gears are belonging to Cylindrial Gears. The difference comparing to spur gears and helical gears are the teeth been cut on the inner surface. They typically mesh with a smaller external gear known as a pinion gear or a planet gear. Its greatest advantage is enabling highly efficient, high-torque transmission within a confined space.

Features:
(1) When meshing two external gears, the rotation occurs in the opposite directions. When meshing an internal gear with an external gear the rotation occurs in the same direction.
(2) Care should be taken with regard to the number of teeth on each gear when meshing a large (internal) gear with a small (external) gear, since three types of interference can occur.
(3) Usually internal gears are driven by small external gears.
(4) Allows for a compact design of the machine.

BELON provides wide range of internal gears from Module 0.2 to heavy-duty Module M45. BELON utilize a variety of advanced manufacturing methods, including, Powder Metallurgy, Gear Shaping, Gear Broaching, Power Skiving and Gear Grinding. When you begin your journey with BELON, we focus on understanding your application and needs, which allows us to match you with the most suitable, tailor-made gear solutions—combining performance, precision, and economy for your success.

Internal Gear Production Capabilities

Production Craft
Powder Metallurgy
Gear Shaping
Gear Milling
Gear Broaching
Power Skiving
Gear Grinding
Module
M0.5-M3.0
M0.5-M45
M3.0-M45
M0.5-M3.0
M0.2-M6.0
Min.M3.0
Inner Diameter
10-300mm
20-24000mm
300-6000mm
20-300mm
20-600mm
100-6000mm
Surface Roughness
Ra1.6
Ra1.6
Ra1.6
Ra1.6
Ra0.8
Ra0.4
Quality Level
DIN7
DIN8
DIN8
DIN7
DIN5
DIN5

Internal Gear Size:

helical-ring-gear-housing-for-robotics-gearbox

Helical Ring Gear Housing for Gearbox

  • Material: 42CrMo4
  • Heat treatment: Tempering and quenching 285 – 310 HBW
  • Accuracy: DIN6
ring-gear-used-in-agricultural-gearbox-custom-ring-gear-belon-machinery

Ring Gear Used In Agricultural Gearbox

  • Material: 20CrMnTi
  • Heat treatment: Carb. Case hardened
  • Accuracy: DIN 6
internal-gear-ring-for-planetary-gearbox-gear-supplier-belon-machinery

Internal Gear Ring For Heavy-Duty Planetary Gearbox

  • Material: 42CrMo4
  • Heat treatment: Tempering and quenching 285 – 310 HBW
  • Accuracy: DIN 6
planetary-gearbox-ring-gear-supplier-belon-machinery

Planetary Gearbox Ring Gear

  • Material: 42CrMo4
  • Heat treatment: Quenching + Tempering + Nitriding
  • Accuracy: DIN 6
power-skiving-gear-for-planetary-gearbox-custom-gear-belon-machinery

Power Skiving Gear For Planetary Gearbox

  • Material: 20CrMnTi
  • Heat treatment: Quenching + tempering + Carburizing
  • Accuracy: DIN6
ring-gears-for-planetary-gearbox-custom-ring-gear-belon

Ring Gears For Planetary Gearbox

  • Material: 20CrMnTi
  • Heat treatment: Case carburizing
  • Accuracy: DIN 6
internal-spur-and-helical-gear-for-planetary-speed-reducer

Internal Spur and Helical Gear for Planetary Speed Reducer

  • Material: 42CrMo4
  • Heat treatment: Case harden+ Nitriding 50±2HRC
  • Accuracy: DIN 6
Internal-helical-gear-for-planetary-reducer-gear-manufacturer-belon

Internal Helical Gear For Planetary Gearbox

  • Material: 42CrMo4
  • Heat treatment: Case harden+ Nitriding 50±2HRC
  • Accuracy: DIN 6
ring-gear-used-in-electric-winch-motor-custom-internal-gear-belon

Ring Gear Used in Electric Winch Motor

  • Material: 42CrMo
  • Heat treatment: Quenched & Tempered to core hardness28-32HRC+Gas Nitriding
  • Accuracy: ISO 8
internal-gear-for-winch-motor-pack-custom-internal-gears-manufacturer-belon

Internal Gear For Winch Motor Pack

  • Material: 42CrMo
  • Heat treatment: Tempering & Quenching & Gas Nitriding
  • Accuracy: ISO 8
internal-ring-gear-for-planetary-gearbox-custom-gear-supplier-belon

Internal Ring Gear for Planetary Gearbox

  • Material: 42CrMo
  • Heat treatment: Nitriding 52-55HRC
  • Accuracy: DIN 6
precision-Internal-gear-for-planetary-gearbox-custom-precision-gear-belon

Precision Internal Gear for Planetary Gearbox

  • Material: 42CrMo4
  • Heat treatment: Tempering and quenching 285 – 310 HBW
  • Accuracy: DIN 6
power-skiving-gears-internal-ring-gear-for-planetary-gearbox

Power Skiving Gears

  • Material: 42CrMo
  • Heat treatment: QT+Nitriding
  • Accuracy: DIN 6
Stainless-steel-gear-ring-gear-supplier-belon

Stainless Steel Gear

  • Material: EN_1_4404
  • Heat treatment: NA
  • Accuracy: DIN 8
Aluminum-ratchet-sheaves-ring-gear-custom-gear-manufacturer-Belon

Aluminum Ratchet Sheaves Ring gear

  • Material: 6061-T6
  • Heat treatment: NA
  • Accuracy: NA
stainless-steel-internal-ring-gear-custom-internal-gear-supplier-belon

Stainless Steel Internal Ring Gear

  • Material: EN1.4404,316L
  • Heat treatment: NA
  • Accuracy: ISO 6
Stainless-steel-gear-ring-gear-supplier-Belon

Stainless Steel Gear In Ring Gear

  • Material: EN_1_4404
  • Heat treatment: NA
  • Accuracy: DIN 8
helical-ring-gear-housing-robotics-gearbox-internal-gear-supplier-Belon

Helical Ring Gear Housing For Robotics Gearbox

  • Material: EN19
  • Heat treatment: Hardening & Tempering & Nitriding
  • Accuracy: DIN6
Small-Internal-ring-gear by power skiving-for-robotics-dogs

Small Internal ring gear by power skiving for robotics dogs

  • Material: 42CrMo
  • Heat treatment: Tempering & Quenching & Nitriding
  • Accuracy: ISO7
Internal-spur-gear-for-planetary-speed-reducer

Internal Spur Gear For Planetary Speed Reducer

  • Material: 42CrMo4
  • Heat treatment: Quenching, Tempering & Nitriding
  • Accuracy: DIN 8
custom-made-helical-gear-housing-gear-manufacturer-Belon

Helical Internal Gear Housing For Planetary Reducers

  • Material: 42CrMo T
  • Heat treatment: Nitriding
  • Accuracy: DIN 6
Internal-gear-ring-gear-spur-gear-supplier-Belon

Internal Gear Used In Planetary Gearbox

  • Material: 42CrMo4
  • Heat treatment: Quenching and Tempering
  • Accuracy: DIN 8
Ground-ring-gear-manufacturing-company-gear-supplier-Belon

Ground Ring Gear For Planetary Gearbox In Sugar Mill

  • Material: 42CrMo4
  • Heat treatment: QT285 – 310 HBW
  • Accuracy: DIN6
Ground-ring-gear-manufacturing-company-gear-supplier-Belon

DIN 5 Precision Ground Ring Gear For Planetary Gearboxes

  • Material: 42CrMo4
  • Heat treatment: QT285 – 310 HBW
  • Accuracy: DIN5
Precision-internal-gear-manufacturing-company-gear-supplier-Belon

Precision Internal Gear By Power-skiving

  • Material: 16MnCr5
  • Heat treatment: Carburizing & Quenching
  • Accuracy: DIN5
Your Precision
Internal Gear Partner
Do you have drawings to be implemented, or problems to be solved? Please feel free to contact us. From initial inquiry and technical specification confirmation to production and delivery, our dedicated team will provide you with one-on-one service, ensuring that every step meets your stringent requirements for precision.
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