Professional Worm Gearbox Manufacturer
ISO Certified | Custom Solutions | Global Shipping
Complete Worm Gearbox Solutions
From compact aluminum housings to heavy-duty cast iron drives and hygienic stainless steel units, our worm gear reducers cover speed ratios from 5:1 to 100:1 for every application worldwide.
RV Series Worm Gearbox
Lightweight die-cast aluminum housing with precision-ground worm shaft. The global standard for compact right-angle speed reduction in general industrial applications.
WP Series Worm Reducer
Heavy-duty cast iron worm gear drives in WPA, WPS, WPX, and WPO configurations. Built for high-torque, high-impact environments where structural rigidity is critical.
Stainless Steel Worm Gear Motor
304 / 316L stainless steel housing with NSF-approved lubricants and FDA-compliant seals. Designed for washdown environments in food, beverage, and pharmaceutical production.
Built on Engineering Excellence
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Vertically Integrated Manufacturing
Full in-house production from bronze worm wheel casting and precision gear hobbing to assembly and batch quality inspection ensures every unit meets strict dimensional tolerances before shipment.
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Custom Engineering Support
Submit your application data and our engineers provide 2D/3D CAD drawings, shaft extension design, and motor matching recommendations — included in your quotation at no extra charge.
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ISO 9001 Certified Quality
Every worm gear reducer undergoes no-load and load run testing before dispatch. Batch inspection reports and full CE documentation are standard with every export order.
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Global Sales & After-Sales Support
Our multilingual team handles inquiries across time zones, backed by a global logistics network. Replacement parts, technical documentation, and installation guidance are always accessible.
Powering Industries Worldwide
Our worm gear reducers perform reliably across the full spectrum of industrial applications — from hygiene-critical food processing lines to heavy-duty mining conveyors.
Trusted by Engineers Around the World
Real projects. Real results. Ever-power worm gearboxes have been specified into production lines, automation systems, and infrastructure projects across every continent.
Beverage Bottling Line Upgrade
A leading German beverage producer replaced worn helical units with our RV090 aluminum worm gearboxes, achieving a measurable reduction in downtime, quieter operation, and significantly easier maintenance access.
Logistics Sorting Center Drive
A major US logistics operator sourced WPA135 cast iron worm reducers for a high-throughput parcel sorting facility. Our full documentation package — CE, test certificates, and material reports — met procurement compliance requirements.
Utility-Scale Solar Tracker Array
An Australian renewable energy developer specified our RV050 self-locking worm gearboxes for a large-scale single-axis solar tracker installation. The inherent self-locking characteristic eliminated the need for separate braking components entirely.
The Complete Guide to Worm Gearboxes
What Is a Worm Gearbox and How Does It Work?
A worm gearbox — also known as a worm gear reducer, worm drive gearbox, or worm gear speed reducer — transmits rotational motion between perpendicular, non-intersecting shafts through the meshing of a helical worm with a bronze worm wheel. This compact 90-degree geometry, combined with reduction ratios of 5:1 to 100:1 in a single stage, makes the worm gear drive irreplaceable across a broad range of mechanical power transmission applications.
Ever-power's fully in-house production line — from gear hobbing to final assembly and run-testing.
One of the most valuable properties of a worm gear reducer is its inherent self-locking capability. When the lead angle of the worm is below approximately 6 degrees, friction forces at the mesh prevent the load from back-driving the input — a critical safety feature for lifting equipment, gate actuators, and solar trackers where load holding without a dedicated brake is essential.
Worm Gearbox vs. Helical Gearbox: Which Should You Choose?
| Criteria | Worm Gearbox | Helical Gearbox |
|---|---|---|
| Shaft orientation | 90 degrees (right angle) | Parallel or right angle |
| Single-stage ratio | 5:1 to 100:1 | 2:1 to 10:1 |
| Efficiency | 70–90% | 95–99% |
| Self-locking | Yes (low lead angle) | No |
| Noise level | Very low | Low to moderate |
| Cost (equivalent torque) | Lower | Higher |
| Best suited for | High ratio, compact, quiet, load-holding | High efficiency, high continuous power |
RV Series: The Global Standard in Aluminum Worm Gearboxes
The RV worm gearbox is manufactured from high-pressure die-cast aluminum alloy, providing an excellent strength-to-weight ratio, natural corrosion resistance, and efficient heat dissipation. Available in frame sizes RV025 through RV150, it accommodates input power from 0.06 kW to 15 kW and delivers output torques from 4 Nm to over 1,500 Nm.
The flange-mount input face accepts IEC standard motor frames directly, while the output is configurable as a solid shaft, hollow shaft with keyway, or hollow shaft with shrink disc — eliminating the need for additional shaft couplings.
RV Series Key Technical Parameters
Housing: Aluminum alloy die-cast | Worm: Case-hardened 20CrMnTi alloy steel, ground | Worm wheel: Tin-bronze ZCuSn10Pb1 | Bearings: Deep groove ball bearings | Lubrication: Synthetic or mineral gear oil, pre-filled | Seals: Double-lip NBR oil seals | Protection: IP54 standard, IP65 available | Operating temp: -15 C to +80 C
WP Series: Heavy-Duty Cast Iron Worm Reducers
The WP series cast iron worm gearbox — available in WPA, WPS, WPX, and WPO configurations — is engineered for environments where aluminum reaches its structural limits: mining, construction, and heavy process industries.
Cast iron provides superior rigidity, better impact resistance, and improved noise damping. The full WP series covers center distances from 40 mm to 250 mm, with output torques extending beyond 20,000 Nm in the largest frames.
Stainless Steel Worm Gear Motor for Hygienic Applications
Food processing, pharmaceutical, and beverage production demand drives that survive daily high-pressure washdown. Our stainless steel worm gear motor range uses 304 or 316L stainless housings, NSF-approved food-grade lubricants, FDA-compliant shaft seals, and smooth CIP/SIP-compatible external surfaces.
Custom electropolished finishes are available for pharmaceutical-grade applications requiring Ra 0.8 micrometer or better surface quality. Learn more about our manufacturing standards on the Ever-power company page.
How to Select the Right Worm Gearbox: 5-Step Guide
Define Output Speed
Divide motor speed (typically 1,400–1,750 RPM) by required output RPM to find the transmission ratio.
Calculate Output Torque
Apply a service factor: 1.0 uniform load, 1.25–1.5 moderate shock, 1.75–2.0 heavy shock. Gearbox rating must exceed the result.
Verify Thermal Rating
For continuous duty, confirm thermal input power rating (P1 thermal) exceeds actual input power. Oversize or add cooling if not.
Choose Housing & Protection
Aluminum for indoor/light-industrial. Cast iron for outdoor/high-impact. IP65+ for washdown or dusty environments.
Specify Output Configuration
Select solid shaft, hollow shaft, or shrink disc. Confirm shaft diameter, length, and keyway dimensions match your driven equipment.
Need Expert Help?
Contact our engineers with your application data and receive a verified selection and quotation.
Maintenance and Service Life
A properly specified worm gear reducer requires minimal maintenance. Key intervals: first mineral oil change at 200–300 operating hours, then every 2,000–4,000 hours (synthetic oils extend to 8,000–10,000 hours). Check oil level monthly, inspect shaft seals annually, and re-torque mounting bolts after the first 200 hours of run-in. With correct maintenance, an Ever-power worm gear reducer delivers reliable performance across many years of continuous industrial service.
Get Your Custom Quote
in 48 Hours
Share your application details — motor power, required output speed, duty cycle, and environment — and our engineers will send you a verified gearbox recommendation with pricing.
