JFB Series Planetary Rotary Gearboxes
Short Description:
JFB planetary rotary gearboxes provide compact high-torque slewing drive solutions with custom ratios, output pinion and mounting options.
JFB planetary rotary gearboxes provide compact high-torque slewing drive solutions with custom ratios, output pinion and mounting options.
JFB Planetary Rotary Gearbox Specification Notes
| Product type | Planetary rotary gearbox / slewing gearbox |
| Gear structure | Two-stage or three-stage planetary reduction options |
| Output options | Pinion, shaft, spline or flange output |
| Input options | Hydraulic motor interface, brake interface or custom adapter |
| Ratio range | Configured according to torque and output speed requirement |
| Mounting | Custom flange, pilot diameter and bolt circle available |
| Project support | Drawing review, dimension matching and OEM customization available |
Final parameters should be confirmed from torque, ratio, ring gear data, mounting dimensions and duty cycle.
Applications of JFB Planetary Rotary Gearboxes
- Crane and excavator slewing mechanisms
- Aerial platform and manlift turntable rotation
- Drilling rig rotary and positioning systems
- Marine deck machinery and offshore rotary drives
- Industrial turntables, indexing equipment and rotary fixtures
- Special vehicle, forestry machine and construction equipment drives
The JFB Series is suitable for OEM buyers who need a compact high-torque planetary gearbox for rotary or slewing drive systems.
Detailed selection notes, FAQ, comparison tables and related guide links are kept here for buyers who need deeper technical information.
JFB Series Planetary Rotary Gearboxes
The JFB Series is a compact planetary rotary gearbox designed for hydraulic slewing and rotary drive systems. It provides high output torque in a small installation envelope and can be configured with different reduction ratios, pinion outputs, brake interfaces and mounting dimensions for OEM equipment.
JFB planetary gearboxes are commonly used as replacements or alternatives for GFB-style rotary gearboxes in cranes, excavators, aerial platforms, drilling machines, marine equipment and industrial turntables. JST Hydraulic can support dimensional matching and customized engineering for new projects or retrofit applications.
How to Select a Planetary Rotary Gearbox
Selection should start from the driven equipment, not only from gearbox size. The correct JFB gearbox depends on output torque, speed, reduction ratio, radial load, pinion data, brake requirement and available mounting space.
- Output torque: confirm continuous torque, peak torque, shock load and required safety factor.
- Reduction ratio: match gearbox ratio with hydraulic motor speed, target output rpm and machine duty cycle.
- Output interface: choose pinion output, splined output, shaft output or flange output according to the driven mechanism.
- Slewing ring data: provide gear module, tooth number, pressure angle, pitch diameter and center distance when a pinion is required.
- Brake and motor interface: confirm whether the gearbox will be used with a hydraulic motor, multi-disc brake or complete slewing drive assembly.
- Mounting dimensions: check flange, pilot, bolt pattern, oil port clearance and installation orientation.
- Working environment: specify outdoor, marine, dusty, low-temperature or high-duty-cycle conditions.
JFB Gearbox vs JSH Hydraulic Slewing Drive
The JFB Series focuses on the planetary gearbox and rotary output. The JSH hydraulic slewing drive is a more integrated unit that can include the hydraulic motor, brake, distributor and pinion output as a complete package.
| Item | JFB Planetary Rotary Gearbox | JSH Hydraulic Slewing Drive |
|---|---|---|
| Product focus | Planetary gearbox for rotary output | Integrated hydraulic slewing drive unit |
| Typical supply scope | Gearbox with output shaft, flange or pinion options | Hydraulic motor, gearbox, brake, valve options and pinion output |
| Best for | OEMs that already define motor, brake and circuit separately | OEMs needing a complete hydraulic rotary drive package |
| Selection focus | Torque, ratio, output interface and mounting dimensions | Torque, speed, brake, hydraulic circuit and slewing ring interface |
Common Custom Options
- Two-stage or three-stage planetary reduction structure for different torque and ratio requirements.
- Pinion gear output matched to the slewing bearing or rotary ring gear.
- Customized flange, pilot diameter, bolt pattern and gearbox housing dimensions.
- Input interface for hydraulic motors, brakes or special adapters.
- Output shaft, spline, flange or pinion design according to the machine layout.
- Sealing, coating, lubrication and documentation options for OEM projects.
Engineering Notes for OEM Buyers
| Torque class | Configured according to output torque, shock factor and required service life. |
| Ratio selection | Matched with motor speed, output speed and hydraulic system efficiency. |
| Pinion design | Gear module, tooth number, pressure angle and heat treatment should match the slewing ring. |
| Compatibility | Dimension matching can be reviewed for replacement or retrofit gearbox projects. |
| Mounting review | Confirm flange, pilot, bolt pattern, oil port clearance and surrounding structure. |
| Project support | JST Hydraulic can provide dimensional recommendations and technical communication for OEM buyers. |
Related Hydraulic Drive Products
For a complete integrated hydraulic rotary unit, see JSH hydraulic slewing drives. For a broader hydraulic transmission package, see JSC hydraulic transmission units. For motor input options, see QJM radial piston hydraulic motors and BM orbital hydraulic motors. For travel systems, see JST hydraulic wheel drives.
FAQ
Can the JFB Series replace an existing rotary gearbox?
In many projects, JST Hydraulic can review the existing gearbox drawing, mounting dimensions, ratio and output interface to evaluate replacement feasibility.
Can the output pinion be customized?
Yes. The pinion gear can be designed according to the slewing ring module, tooth number, pressure angle, face width and heat treatment requirement.
Is the hydraulic motor included?
The JFB Series can be supplied as a gearbox-focused solution or matched with a hydraulic motor and brake depending on the project scope.
What data is needed for selection?
Please provide required torque, target output speed, ratio preference, motor data, mounting drawing, output interface and working environment.
Request a Technical Recommendation
Send your existing gearbox drawing, slewing bearing data, torque requirement and target speed to JST Hydraulic. Our engineering team can recommend a JFB planetary rotary gearbox configuration for review.