This worm gear drive is specifically designed for screw jacks, combining efficient power transmission with a compact structure. It features a precision-engineered assembly of a high-quality alloy steel worm and a wear-resistant bronze worm wheel, ensuring smooth transmission and precise positioning even at high reduction ratios. Its key advantage lies in reliable self-locking capability, which securely supports heavy loads and eliminates the risk of slippage, thereby significantly enhancing operational safety. The optimized tooth profile effectively minimizes frictional loss and heat generation, extending the product’s service life. It supports diverse mounting interfaces and gear ratio configurations, offering flexibility for various industrial applications. With low-noise operation and a maintenance-free lubrication system that reduces operating costs, it serves as an indispensable transmission component for material handling, structural support, and precision adjustment systems.
Worm & Worm Wheel For Screw Jacks
What Quality Report Do We Provide For Worm & Worm Wheel?
For high-precision transmission sets such as worm & worm wheel assemblies, a comprehensive and professional quality report not only verifies dimensional compliance but also serves as the primary basis for customer acceptance and subsequent assembly and commissioning. We conduct a full inspection of the products prior to shipment and provide a complete set of quality reports for customer approval.
- Bubble Drawings
These drawings mark all dimensions requiring inspection. They serve as both operational guidelines for quality inspectors and the master reference index for all subsequent dimensional reports.
- Dimensional Report
This report lists the actual measured values corresponding to each numbered item on the bubble drawing. It includes nominal (drawing) values, actual measured values, upper and lower tolerances, and pass/fail determinations.
- Material Certificates
We provide traceable material certificates from third-party laboratories or the original manufacturer, detailing chemical composition and mechanical properties.
- Heat Treatment Report
For worms, the report includes data on effective case depth, surface hardness (HRC), and core hardness.
- Accuracy Report
A detailed accuracy grade assessment is issued in accordance with international standards (such as DIN 3974, AGMA 2015, or ISO 1328). This report covers:
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- Worm: Single pitch deviation (fpt), total cumulative pitch deviation (Fp), total profile deviation (Fα), and helix deviation (fHβ).
- Worm Wheel: Total tangential composite deviation (Fi’) and radial runout (Fr).
- A definitive conclusion regarding the accuracy grade is provided at the end of the report.
- Meshing Report / Video / Pictures
Following the assembly of the worm & worm wheel, we capture high-definition images of the meshing pattern (contact patch), record the backlash, and verify compliance with installation distance (center distance) tolerances. Supporting videos and images are provided.
For the detailed quality report template, you can check our Downloads or contact us directly.
9-Step Production Process
Worm Gear Casting
Worm Shaft Baiting
Turning or Machining
Worm Gear Hobbing
Worm Shaft Milling
Worm Shaft Grinding
OD Grinding
Worm Gear Marking
Worm Shaft Marking
Strict Quality Inspection
Dimension Inspection
Material Inspection
Runout Testing
Heat Treatment Testing
Worm Shaft Accuracy Inspection
Worm Wheel Accuracy Inspection
Meshing Testing
Dimension Inspection
Material Inspection
Runout Testing
Heat Treatment Testing
Worm Shaft Accuracy Inspection
Worm Wheel Accuracy Inspection
Meshing Testing
Download To Learn More
Professional Packaging Safe Arrival
Inner Package
Out Package
Carton
Wooden Package
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