JDLB series precision dual-lead reducer
- Precision Dual-Lead Worm Gear Reducer
- unique dual-lead variable tooth thickness worm design
- backlash adjustable via axial worm displacement without altering center distance
- precision grade backlash ≤1 arcmin ultra-high positioning accuracy
- worn clearance re-adjustable without gear replacement greatly lowering maintenance cost
- high-strength bronze worm wheel excellent wear resistance
- stable meshing low vibration low noise bidirectional smooth rotation
- rigid integrated cast housing strong torsional stiffness
- 90° compact right-angle layout space saving
- input/output backlash-free coupling connection
- full synthetic lubrication fully sealed maintenance-free
- perfect interchangeable mounting with servo motors
- economical alternative to high-end planetary reducers
- customized interface and reduction ratios supported
Brand: Huxing
Model: JDLB
Introduction: The JDLB dual-lead worm gear reducer utilizes advanced processing and assembly techniques
to ensure proper tooth meshing, reduce tooth surface contact stress, and features a specially
developed copper alloy worm gear that provides higher strength and better stability.
The high tooth surface contact ratio reduces worm gear wear and maintains
a locked backlash for extended periods.
Performance Features:
1. Employs dual-lead worm gear transmission, with different lead angles on the left
and right tooth surfaces of the worm. The meshing clearance can be adjusted
by moving the worm, allowing for quick backlash setting.
2. Low backlash: The worm gear backlash can be adjusted to 1 arc minute
(1 arc minute for primary stage, 2-4 arc minutes for secondary stage).
3. High input speed: Up to 4000 RPM.
4. The input end uses a high-rigidity, low-inertia coupling, eliminating the misalignment defect
between the motor output shaft and the reducer.
5. High torque: The worm gear uses enlarged tapered roller bearings,
enabling it to withstand greater loads and providing higher support rigidity.
6. High Stability: The housing is made of high-strength alloy steel, offering excellent rigidity
light weight, and a pleasing appearance.
Applications: Primarily used in CNC machine tools, production lines, cutting machines
conveyor lines, indexing devices, and reading mechanisms.
Technical Parameters:
Ratio:
① i=5.2, 7.25, 10, 25, 14.5, 19.5, 30, 45, 60, 90 (standard speed ratios);
② i=24.5, 40, 50, 80, 100 (supplementary speed ratios, longer lead times).
Output Torque: Up to 1000 N.m.
Frame size/base model: JDLB025 / 035 / 045 / 050 / 055 /063 /075 /090 /110
Traditional worm gear reducers inevitably develop backlash between gears over time
leading to backlash errors, which is unacceptable in high-end manufacturing.
The key to dual-lead technology lies in the different leads used on the left and right sides of the worm's teeth.
This brings a significant advantage: the meshing clearance with the worm can be precisely
adjusted by axially moving the worm, even achieving zero backlash.
The JDLB90-100-C/A model solidifies this design, allowing users to maintain extremely high positioning
accuracy over the long term without complex correction processes.
This means that whether using an automatic indexing table or a precision rotary table
the equipment can achieve precise positioning with highly stable repeatability.
"Hidden Enhancement" in Load Capacity
Many people worry that increased precision will affect load capacity
but the dual-lead structure has the opposite effect.
Because the meshing clearance can be precisely controlled to a minimum
the contact between the tooth surfaces is more complete, and the force is more evenly distributed.
The JDLB90-100-C/A features a reinforced housing structure and bearing configuration
enabling it to handle larger loads while maintaining high precision. In practical applications
it does not easily generate vibration or noise due to load fluctuations.
This is especially important for automated production lines with frequent start-stop and reversal operations
effectively reducing mechanical shocks caused by unstable power transmission.
Lifespan and Maintenance: Visible "Worry-Free"
Equipment maintenance costs are often a hidden "big expense." Traditional gearboxes
once experiencing excessive backlash, often require complete replacement or costly repairs.
However, the JDLB90-100-C/A, thanks to its adjustable features, significantly extends its effective working life.
After a period of operation, a simple worm gear position adjustment restores factory-like precision.
This "maintenance-as-upgrade" feature directly reduces downtime and labor costs for maintenance.
For production lines operating 24 hours a day, this advantage is enough to determine whether to choose it.
Flexibility in Selection and Matching
Whether the user directly drives the motor or uses a synchronous belt or gearbox
a suitable installation combination can be found. This makes it a "versatile" choice for system integrators
eliminating the need for custom-designed complex connectors for the reducer.
In conclusion, the dual-lead reducer essentially solves the fundamental pain point of
traditional reducers—"precision deteriorates over time"—using a more advanced design logic.
It achieves an excellent balance between accuracy, load capacity, and lifespan.
If your project is struggling with downtime losses due to equipment overhauls
or is troubled by insufficient positioning accuracy, consider seeking solutions from this type of technology.










