Your Professional Planetary Gear Reducers Supplier
Founded in February 2023,Shandong Guode Transmission Equipment Co., Ltd. is a professional manufacturer specializing in transmission equipment and mining machinery solutions. Located in Boshan District, Zibo City, Shandong Province, our factory covers approximately 5,000 square meters and integrates R&D, production, assembly, warehousing, and office operations. Supported by an experienced technical and production team, we operate complete manufacturing lines for gear reducers, gearboxes, transmission cases, and mining machinery components. Our facility is equipped with machining, assembly, and testing equipment to ensure stable product quality and efficient production. With a focus on reliability, standardized manufacturing, and customer-oriented service, we are committed to providing dependable transmission solutions for global industrial customers.
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![Planetary Gear Reducers]()
Planetary Gear ReducersPlanetary Gear Reducers deliver high torque density within a compact footprint, making them ideal for space-limited and high-load applications. Their balanced load distribution and modular design -
![NGW Planetary Gear Reducer Transmission Gearbox for Crane]()
NGW Planetary Gear Reducer Transmission Gearbox for CraneNGW Planetary Gear Reducer for cranes is designed for high-load lifting and slewing applications. Its planetary transmission structure provides strong torque output in a compact form, supporting -
![Inline Planetary Gear Reducer]()
Inline Planetary Gear ReducerInline Planetary Gear Reducers are designed for high-torque transmission in compact, space-efficient systems. With coaxial input and output shafts, they support precise speed reduction and stable -
![Right Angle Planetary Gear Reducer]()
Right Angle Planetary Gear ReducerRight Angle Planetary Gear Reducers combine planetary transmission with a 90-degree output configuration, providing compact torque conversion for space-restricted installations. They are designed for -
![Flange Mounted Planetary Gear Reducer]()
Flange Mounted Planetary Gear ReducerFlange Mounted Planetary Gear Reducers are designed for direct installation and compact power transmission. The integrated flange structure enables secure mounting while delivering high torque -
![Shaft Mounted Planetary Gear Reducer]()
Shaft Mounted Planetary Gear ReducerShaft Mounted Planetary Gear Reducers are designed for direct torque transmission without complex mounting structures. Their compact planetary design and shaft-mounted configuration simplify
Why choose us
Sales Market
Our products have been exported to over 20 countries and regions; leveraging our extensive experience in international trade and cross-border delivery, we are able to respond rapidly to the diverse needs of different markets.
Professional Technical Team
Our experienced engineering and production team is skilled in transmission equipment manufacturing and committed to providing reliable products and responsive technical support.
Strict Quality Control
All products are inspected according to national and industry standards before delivery, and each shipment is accompanied by inspection reports and related technical documentation.
Customized
We support customized production according to customer drawings, technical specifications, and application requirements, helping clients achieve suitable transmission solutions for different industries.
Planetary gear reducers are a specific type of in-line gearing that provide unmatched torque versus size, precision, and durability compared to other in-line gear technologies. The purpose of a planetary gear reducer is to multiply the torque of an electric motor while proportionally reducing the speed with maximum efficiency. Planetary gear reducer design consists of an input sun gear that turns several orbiting planet gears within an outer ring gear.
|
Specifications/Item |
LTZD410L |
LTZD450L |
LTZD490L |
LTZD560L |
LTZD680L |
|
d1 |
15-φ 17.5 |
18-φ 17.5 |
24-φ 20 |
24-φ 26 |
30-φ 26 |
|
α |
0° |
10° |
7.5° |
7.5° |
0° |
|
d2 |
3- φ 16H7 |
3- φ 16H7 |
3-φ 18H7 |
—— |
—— |
|
D1 |
φ 370 |
φ 424 |
φ 445 |
φ 515 |
φ 620 |
|
D2 |
N110x3x35 |
N120x3x38 |
N140x5x26 |
N160x5x30 |
N220x5x42 |
|
D3 |
φ 112H7 |
φ 121.5H7 |
φ 142H7 |
φ 162H7 |
φ 222H7 |
|
D4 |
φ 340f7 |
φ 390f7 |
φ 410f7 |
φ 460f7 |
φ 565f7 |
|
D5 |
φ 409 |
φ 452 |
φ 490 |
φ 560 |
φ 680 |
|
L1 |
10 |
10 |
12 |
20 |
20 |
|
L2 |
96 |
102 |
110 |
125 |
150 |
|
L3 |
18 |
15 |
15 |
23 |
22 |
|
L4 |
28 |
35 |
35 |
40 |
40 |
|
L5 |
95 |
109.5 |
100 |
125 |
150 |
|
E |
φ 42E7 |
φ 48E7 |
φ 55E7 |
φ 60E7 |
φ 60F7 |
|
F |
115 |
115 |
115 |
150 |
150 |
|
G |
12 |
14 |
16 |
18 |
18 |
|
H |
45.3 |
51.8 |
59.3 |
64.4 |
64.4 |
|
M |
φ 250F7 |
φ 250F7 |
φ 300F7 |
φ 350F7 |
φ 350F7 |
|
N |
φ 350 |
φ 350 |
φ 400 |
φ 450 |
φ 450 |
|
P |
φ 300 |
φ 300 |
φ 350 |
φ 400 |
φ 400 |
|
S |
4-M18 |
4-M18 |
4-M18 |
8-M18 |
8-M18 |
|
L |
500 |
509.5 |
630 |
670 |
735 |
Advantages of Planetary Gear Reducers
Compact Size and Low Weight
Compared to similar gear reducer systems, these components weigh less and have a compact design that can fit in more designs. Planetary gear reducers can maintain the same torque output while decreasing up to 50% in size.
Durability and Long Life
These gear reducers have ball bearings that help the components operate smoothly and efficiently. This reduces wear throughout their operational lifespan, leading to less damage and long product life.
Increased Repeatability
Planetary gear reducers offer higher axial load speeds and radial load speeds than comparable systems. This increases their overall reliability and sturdiness and decreases the potential for misalignment. These features allow planetary gear reducers to mitigate the effects of vibration and ensure consistent transmission over time.
Increased Torque Transmission
Planetary gear reducers are built for maximum teeth engagement. Because more teeth are in contact, it can both handle more torque and transfer more torque.
Versatility
Each stage of a planetary gear reducer system can be stacked or modified for custom configurations that meet the needs of a given application. Planetary gear reducers are also easy to work with: once they're installed in a cylindrical gearbox, the gear reducers can be installed almost anywhere.
Types of Planetary Gear Reducers
Inline Planetary Gearbox
The input and output shafts share the same axis. This is the most common configuration, widely used in servo motor applications and industrial automation. Ratios typically range from 3:1 to 100:1 in a single or two-stage design.
Right-Angle Planetary Gearbox
Incorporates a bevel or hypoid gear stage to redirect output 90°. Used when layout constraints prevent inline mounting — common in packaging machines and robotic arms.
Precision (Low-Backlash) Planetary Gearbox
Manufactured to tighter tolerances, achieving backlash as low as ≤1 arcmin. Essential in CNC machining centers, laser cutting systems, and semiconductor equipment where positioning repeatability is critical.
High-Ratio Planetary Gearbox
Uses two or three gear stages in series to achieve ratios from 100:1 up to 10,000:1. Suitable for low-speed, high-torque applications such as stirring equipment and solar panel tracking drives.
Automotive
High efficiency and compact design for vehicle transmissions.
Robotics
Precision and accuracy in speed and position control.
Industrial Machinery
High torque density and reliability for demanding applications.
Renewable Energy
Versatility in speed reduction and torque multiplication for wind turbines.
Medical Equipment
Compact design and low backlash for precise operation in scanners and operating tables.
Petrochemical
Shock load resistance and durability for heavy-duty applications.
Automation
Efficiency and quiet operation for automated systems.
Performance Parameters of Planetary Gear Reducers
Reduction Ratio
The ratio between input and output speed. A 10:1 ratio means a 3,000 RPM motor output becomes 300 RPM at the gearbox output, while output torque is multiplied (minus losses). Always match the ratio to your required output speed — do not rely on oversizing to compensate for a mismatched ratio.
Output Torque and Peak Torque
Rated (continuous) torque is what the gearbox can sustain indefinitely. Peak torque — typically 2–3× the rated value — is the maximum allowable for short durations (e.g., during acceleration or emergency stops). Exceeding peak torque causes gear or bearing failure.
Backlash
The lost motion when the drive direction reverses. Measured in arcminutes, it directly impacts positioning accuracy. A standard gearbox at 5 arcmin of backlash translates to roughly 0.073° of angular error — acceptable for conveyor drives, but problematic for a robotic joint requiring ±0.01° repeatability.
Efficiency
A single-stage planetary gearbox typically operates at 97–99% efficiency. Each additional stage reduces this by approximately 1–2%. A three-stage unit may therefore achieve 93–95% overall efficiency. This directly affects motor sizing and heat generation.
Torsional Rigidity
Expressed in Nm/arcmin, this measures how much the output shaft twists under load before backlash is taken up. Higher rigidity is critical for dynamic, reversing loads in servo-driven applications.
Main Components Of Planetary Gear Reducers
Sun Gear
The sun gear is the central gear of the planetary gearbox. It drives the entire gear system by receiving input power.
Planet Gears
The planet gears revolve around the sun gear. There are usually two or more planet gears, and they are connected by the planet carrier.
Planet Carrier
The planet carrier is the support structure for the planet gears, connecting them together and allowing them to rotate around the sun gear.
Ring Gear
The ring gear is the outer gear of the planetary gearbox. It rotates simultaneously with the planet gears and transmits the output force and torque to an external device.
Maintenance and Service Life
Lubrication
Most sealed units are grease-lubricated for life, but oil-lubricated industrial units require oil changes every 5,000–10,000 operating hours. Using the wrong viscosity grade accelerates wear.
Bearing inspection
Planet gear bearings are the most common failure point. Vibration analysis every 6–12 months can detect early-stage bearing damage.
Overload protection
Install a torque limiter if your application has frequent jam-up or impact events. Running at 150% rated torque even briefly can cause micro-pitting on gear flanks.
Alignment
Misalignment between the motor and gearbox input introduces radial forces not accounted for in the gearbox rating, reducing bearing life significantly.
FAQ
We're well-known as one of the leading planetary gear reducers manufacturers in China, featured by quality products and good service. Please rest assured to buy customized planetary gear reducers made in China here from our factory. Thank you for your interest in our products.
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