SP-I Slew Drive
Lightweight Slewing Ring Gear Drive SP-I 1091
The SP-I 1091 gear slewing drive is a highly efficient gear reduction transmission device, widely used in the automatic slewing of industrial machinery—particularly in applications requiring high precision, high torque, and reliable speed control. The drive consists of two or more precisely machined spur or helical gears with varying tooth profiles, carefully assembled to ensure consistent performance and stability. Through its accurately designed mounting base, the SP-I 1091 guarantees proper alignment and structural integrity during operation.
By integrating slewing bearing functionality with gear transmission, the SP-I 1091 not only achieves efficient deceleration and torque output, but also simplifies the mechanical system, reducing installation difficulty and long-term maintenance needs. Its robust yet compact design makes it an ideal solution for demanding environments where both rotational motion and load-bearing capacity are required.
Module: 4 mm
Teeth number of wheel: 294 (Symbol: Z2)
Teeth number of pinion: 15 (Symbol: Z1)
Gear ratio: 19.6 (Symbol: i)
Max torque: 10650 Newton-meters (Symbol: Md max)
Description
What Is SP-I 1091 Slewing Drive?
The SP-I 1091 slewing drive is a highly efficient, external gear-type rotary transmission system that combines slewing bearing and gear reduction in one integrated structure. It is engineered for high-precision, high-speed industrial applications, where reliable torque transmission and continuous rotation are essential.
This model is constructed from two or more precisely machined spur or helical gears with different tooth counts. These gears are assembled with strict tolerances and supported by a stable base to ensure optimal alignment and long-term mechanical integrity. The built-in slewing bearing allows the unit to support axial and radial loads while rotating smoothly under load.
In addition to delivering efficient deceleration, the SP-I 1091 significantly simplifies the overall mechanical design, eliminating the need for separate bearing supports or external reduction units. Its fully sealed IP65-rated housing protects internal components from dust and moisture, making it suitable for harsh outdoor conditions and demanding work environments.
Whether for large equipment rotation, heavy lifting platforms, or high-load automation, the SP-I 1091 offers a compact, integrated solution that enhances system performance while reducing installation and maintenance complexity.
Key Features
Built-in high-load slewing bearing for enhanced stability
19.6:1 integrated gear reduction—no need for external reducers
Sealed design (IP65) protects components in outdoor conditions
Supports both electric and hydraulic motor input options
Precision-machined gear profile for smooth transmission
Pre-filled with Mobil EP2 grease—ready to install and operate
Compact and modular housing for simplified installation
Fully interchangeable with IMO SP-I 1091 model
Typical Applications
Large construction equipment
Mobile cranes and aerial lift systems
Automated heavy-duty rotation platforms
Industrial hoists and lifting gear
Solar tracking or satellite positioning systems
Off-road and military transport systems
The SP-I 1091 is especially well-suited for high-load environments where durability and torque precision are critical.
Installation and Setup
Delivered pre-assembled and factory-tested
Pre-lubricated with Mobil EP2 grease
Designed for plug-and-play integration
Motor interface and mounting dimensions customizable per request
No on-site debugging required
Why Choose LYRADRIVE
LYRADRIVE engineers each slewing drive with practical integration and long-term performance in mind. For the SP-I 1091, our team delivers:
Precision-machined housing ensuring synchronized rotation when used in paired configurations
Complete drive system kits including compatible planetary reducers, servo motors, and drivers
Extensive experience in customized and non-standard slewing drive solutions
Fast engineering support and OEM service
Production capabilities include:
10,000 m² manufacturing facility
5,000+ units monthly capacity
ISO9001, SGS, BV, CCS certified
Strict 5S quality and process management system
Get a Quote
To learn more about the SP-I 1091 or request drawings, specs, or pricing for your project, please contact LYRADRIVE today.
Item | |||
SP-I 1091 | Sign | Unit | Value |
Module | M | mm | 4 |
Teeth number of wheel | Z2 | － | 294 |
Teeth number of pinion | Z1 | － | 15 |
Gear ratio | i | － | 19.6 |
Max torque | Md max | N.m | 10650 |
Nom torque | Md nom | N.m | 7700 |
Max holding torque | Mh | N.m | 10650 |
Radial static load | Co rad | KN | 700 |
Axial static load | Co ax | KN | 1860 |
Radial dynamic load | Crad | KN | 265 |
Axial dynamic load | Cax | KN | 310 |
Weight | W | Kg | 123 |
