Product Introduction
SGR planetary gearboxes for drilling rigs are designed for demanding drilling applications that require high torque, reliable power transmission and stable operation under heavy loads.
The planetary gear design distributes the transmitted load across multiple planetary gears, providing high load-carrying capacity and efficient torque transmission in a compact gearbox configuration. This makes SGR planetary gear reducers suitable for drilling equipment where high output torque and low-speed operation are required.
The SGR N Series offers a wide range of configurations, transmission ratios, mounting options and output shaft designs to meet different drilling equipment requirements. The gearbox can be configured for flange, foot or shaft mounting and customized according to the machine's torque, speed, installation and interface requirements.
SGR also provides OEM and customized planetary gearbox solutions for drilling equipment manufacturers and machinery upgrade projects.
Technical Specifications
| Parameter | Specification |
| Transmission Ratio | 3.15–9000 |
| Input Power | 0.25–55 kW |
| Permissible Torque | ≤ 800,000 N·m |
| Output Speed | 0.425–445 rpm |
| Mounting Options | Flange, foot or shaft mounting |
| Gearbox Series | N Series |
| Output Shaft Options | Keyed cylindrical shaft, splined shaft, hollow shaft with shrink disc, splined hollow shaft |

Key Features of SGR Planetary Gearboxes for Drilling Applications
The planetary gear arrangement distributes the transmitted load across multiple planetary gears, enabling high torque transmission and high load-carrying capacity in a compact gearbox design.
The SGR N Series covers a wide range of planetary gearbox configurations for industrial applications. Different transmission ratios, mounting arrangements and shaft configurations are available to meet specific drilling equipment requirements.
Depending on the machine design, the gearbox can be configured with a keyed cylindrical shaft, splined shaft, hollow shaft with shrink disc or splined hollow shaft.
The gearbox housing is manufactured from nodular cast iron to provide high structural rigidity and reliable support for internal transmission components under demanding operating conditions.
Precision manufacturing and strict quality control of the gear transmission help ensure smooth power transmission, low operating noise and stable gearbox performance.
SGR planetary gearboxes are designed for applications requiring high load capacity and reliable low-speed torque transmission, making them suitable for demanding drilling and other heavy-duty industrial equipment.
Why Choose SGR Planetary Gearboxes?
Planetary transmission distributes the load across multiple planetary gears, providing reliable torque transmission for demanding industrial applications.
SGR planetary gearboxes are designed for heavy-duty industrial equipment requiring stable performance and long-term operation.
Different ratios, mounting arrangements and shaft configurations are available for different equipment designs.
SGR can customize gearbox configurations according to torque, speed, mounting dimensions, shaft design and other technical requirements.
SGR integrates engineering design, manufacturing, assembly, quality control and gearbox testing within its own production system.
Each gearbox undergoes quality checks throughout the manufacturing process, from material and machining inspection to final testing before shipment.
SGR Manufacturing Capabilities

Full-Cycle Manufacturing

Modern Manufacturing Facility

High-Precision Gear Inspection
Precision Quality Control

Product Testing

Reliable Export Packaging
Certifications & Quality Control
SGR maintains strict quality control throughout the manufacturing process, from material inspection and machining accuracy checks to gearbox assembly and final testing.
SGR is certified to ISO 9001 and has obtained approval from the Russian Maritime Register of Shipping (RS) for applicable areas, demonstrating our commitment to consistent product quality and reliability.
Each gearbox undergoes comprehensive quality inspection before shipment to help ensure stable performance and long service life in demanding industrial applications.
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Russian Maritime Register of Shipping (RS) |
International production quality management system(ISO) |
Individual Engineering Solutions
Drilling equipment varies in terms of torque requirements, operating speed, installation space and mechanical interfaces. Therefore, a standard gearbox may not always be the most suitable solution.
SGR provides individual engineering solutions based on the specific requirements of each application.
Our engineers can assist with gearbox selection or customization according to output torque, transmission ratio, input and output speed, mounting configuration, shaft dimensions and operating conditions.
For existing equipment, SGR can also analyze the original gearbox and develop a suitable replacement or upgraded planetary gearbox solution.
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SGR planetary gearboxes have been applied to crawler long-auger drilling rigs, providing reliable torque transmission for demanding drilling operations.
The drilling rig requires a gearbox capable of transmitting high torque while maintaining stable low-speed operation under heavy working loads. The planetary gearbox provides a compact and high-load-capacity transmission solution for the drilling drive system.
With different transmission ratios, output shaft configurations and mounting options available, SGR can adapt the planetary gearbox to the mechanical interface and operating requirements of different drilling rigs.
SGR planetary gearboxes are used in industrial drilling equipment where high torque, reliable power transmission and stable low-speed operation are required,for example :
Why Use a Planetary Gearbox for Drilling Rigs?
Drilling equipment typically requires high output torque, controlled rotational speed and reliable power transmission under heavy and variable loads. At the same time, the available installation space can be limited.
A planetary gearbox provides an efficient solution by distributing the transmitted load across multiple planetary gears and providing multiple points of gear engagement. This allows the gearbox to transmit high torque while maintaining a relatively compact design.
For drilling rigs and other heavy-duty drilling equipment, the appropriate planetary gearbox should be selected according to the required output torque, transmission ratio, input power, output speed, mounting configuration and operating conditions.
OEM & Custom Planetary Gearbox Solutions for Drilling Equipment
SGR provides customized planetary gearbox solutions for drilling equipment manufacturers, machinery builders and equipment upgrade projects.
Our engineers can configure the gearbox according to the required transmission ratio, input power, input speed, output speed, output torque, mounting arrangement, shaft dimensions and other mechanical requirements.
For gearbox replacement projects, customers can provide the existing gearbox model, technical specifications, drawings or photos. SGR engineers can evaluate the existing transmission and propose a suitable replacement solution.
1. What type of drilling equipment can use SGR planetary gearboxes?
SGR planetary gearboxes can be used for drilling rigs, crawler drilling rigs, long-auger drilling rigs, electric-drive drilling equipment, hydraulic motor-driven drilling equipment and other heavy-duty drilling machinery.
2. What is the maximum permissible torque?
The permissible torque of the applicable SGR planetary gearbox range can reach 800,000 N·m. The exact gearbox selection depends on the required torque, transmission ratio, speed, operating conditions and other technical parameters.
3. What transmission ratios are available?
The current range covers transmission ratios from 3.15 to 9000, depending on the gearbox configuration and number of stages.
4. What output shaft options are available?
Available configurations include keyed cylindrical shafts, splined shafts, hollow shafts with shrink discs and splined hollow shafts.
5. Can SGR customize a planetary gearbox for a drilling rig?
Yes. SGR provides OEM and customized planetary gearbox solutions. The gearbox can be configured according to the required torque, ratio, speed, mounting dimensions, shaft configuration and other technical requirements.
6. Can SGR replace an existing drilling gearbox?
Yes. SGR can evaluate an existing gearbox for replacement or upgrade. Customers can provide the original gearbox model, drawings, technical specifications or photos for technical evaluation.
7. What information is required to select a planetary gearbox for a drilling rig?
The key information normally includes input power, input speed, required output speed, output torque, transmission ratio, mounting arrangement, shaft dimensions, duty cycle and operating environment.
8. Can SGR provide technical drawings and 3D models?
Technical documentation such as product specifications, drawings and 3D models can be provided according to the specific project and product requirements.
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