Gearbox Dust Cover for Industrial & Agricultural Gearboxes
Ever-Power manufactures gearbox dust covers at our China production facility. We offer seven model configurations ranging from 110mm to 150mm height specifications, designed to fit agricultural PTO gearboxes, planetary reducers, and worm drive systems. Each manufacturer batch undergoes dimensional inspection before shipment. Standard models feature oval or circular profiles with shaft diameters between 59.5mm and 68mm. The factory maintains inventory of common sizes for immediate delivery, while custom orders follow a 15-30 day production schedule. Contact us with your gearbox specifications for price quotes on single units or volume orders.
Product Overview
Ever-Power specializes in manufacturing precision-engineered gearbox dust covers designed to protect power transmission equipment from environmental contaminants. Our comprehensive product line addresses the critical need for gearbox protection across agricultural, industrial, and heavy equipment applications.
These protective covers serve as the first line of defense against dust, moisture, debris, and particulate matter that can compromise gearbox performance and longevity. With multiple configurations and size options, our dust covers accommodate diverse gearbox designs while maintaining ease of installation and serviceability.

Product Specifications

150mm High Large Oval
- Height: 343mm
- Outer Diameter: Ø187×272mm
- Inner Diameter: Ø60mm
- Length: 147mm
- Application: Large agricultural & industrial gearboxes

150mm High Oval with Straight Tube
- Height: 290mm
- Outer Diameter: 222mm
- Inner Diameter: Ø60mm
- Length: 209.5mm
- Feature: Extended shaft protection

150mm Standard Oval
- Height: 272mm
- Outer Diameter: 202mm
- Inner Diameter: Ø59.5mm
- Length: 146mm
- Application: Medium-duty gearboxes

150mm High with Cap
- Outer Diameter: Ø220mm
- Inner Diameter: Ø60mm
- Total Length: 188.7mm
- Cap Section: 75mm
- Feature: Integrated cap design

150mm High Gearbox Assembly
- Outer Diameter: Ø155-Ø210mm
- Inner Diameter: Ø60mm
- Total Length: 153mm
- Feature: Multi-stage sealing system

110mm High with Sleeve
- Height: 190mm
- Outer Diameter: Ø226mm
- Center Hole: Ø63mm
- Total Length: 148mm
- Feature: Two-piece design

110mm High Cap Seat
- Height: 190mm
- Outer Diameter: Ø216.5mm
- Center Hole: Ø68mm
- Length: 106mm
- Application: Compact installations
Key Functions & Benefits
Contamination Prevention
Blocks dust, dirt, and particulate matter from entering gearbox internals
Moisture Protection
Shields components from water, humidity, and condensation damage
Extended Service Life
Reduces wear and tear, significantly extending gearbox lifespan
Cost Reduction
Minimizes maintenance expenses and unexpected repair costs
Lubricant Retention
Maintains proper lubrication levels and prevents oil leakage
Performance Optimization
Ensures consistent efficiency and reliable operation
Compatible Gearbox Types
Our dust covers are engineered to protect various gearbox configurations across multiple industries:
Additional Compatible Applications:
How to Select the Right Dust Cover
Measure Dimensions
Accurately measure shaft diameter, gearbox housing diameter, and required coverage length. Verify clearance space for installation.
Assess Environment
Evaluate dust levels, moisture exposure, temperature extremes, and chemical presence in your operating environment.
Choose Configuration
Select between standard, extended, straight tube, or two-piece designs based on your specific application needs.
Match Size
110mm series for compact gearboxes (Ø155-170mm). 150mm series for medium to large applications (Ø180mm+).
Consider Installation
Evaluate accessibility, maintenance frequency, mounting compatibility, and required tools for installation.
Expert Support
Contact our technical team for personalized recommendations based on your specific requirements.
Why Replace Your Gearbox Dust Cover?
Critical Warning Signs
Regular inspection and timely replacement of worn dust covers prevents costly gearbox damage and unexpected downtime.
🔴 Physical Damage
Cracks, tears, punctures, or deformation compromise sealing effectiveness and allow contaminant ingress.
🔴 Material Degradation
UV exposure, chemical contact, and temperature cycling cause brittleness, hardening, or material breakdown.
🔴 Seal Failure
Worn or damaged seals allow dust entry and lubricant leakage, reducing gearbox protection and efficiency.
🔴 Mounting Issues
Loose fit, improper alignment, or mounting bracket failure creates gaps where contaminants can enter.
🔴 Visible Contamination
Dust accumulation inside the cover or on the gearbox housing indicates inadequate protection.
🔴 Age-Related Wear
Covers exceeding their service life (typically 2-5 years depending on conditions) should be replaced proactively.
✅ Replacement Benefits
Timely dust cover replacement prevents internal gearbox damage that costs 10-50 times more than the cover itself. Regular replacement intervals maintain optimal protection, extend equipment service life, and minimize unplanned downtime.
Why Choose Ever-Power Dust Covers?
Precision Manufacturing
Advanced machining equipment and strict dimensional tolerances ensure perfect fit and consistent quality across all products.
Superior Materials
High-grade materials selected for durability, chemical resistance, temperature stability, and extended service life in harsh environments.
Rigorous Quality Control
Every unit undergoes dimensional inspection and performance testing before shipment to guarantee reliability and fit.
Extensive Inventory
Common sizes stocked for immediate delivery. Custom specifications and OEM orders scheduled efficiently for larger requirements.
Custom Engineering
Technical team available to adapt existing designs or develop new configurations based on specific application needs.
Global Experience
Proven performance across diverse climates and applications worldwide, from agricultural fields to industrial facilities.
What Our Customers Say
"The Ever-Power dust covers have significantly reduced maintenance costs on our agricultural fleet. After two harvest seasons in extremely dusty conditions, the covers still provide excellent protection. Highly recommended for farm equipment."
Michael Thompson
Operations Manager, Midwest Farming Co., USA
"Perfect fit for our planetary gearbox assemblies. The precision manufacturing is evident in the tight tolerances and consistent quality. We've standardized on Ever-Power dust covers across our entire production line."
Hans Mueller
Chief Engineer, Precision Drives GmbH, Germany
"Excellent durability in our marine environment. The covers resist salt water exposure and UV degradation better than previous suppliers. Easy installation and competitive pricing make this an outstanding value."
James Robertson
Maintenance Supervisor, Coastal Marine Services, Australia
Frequently Asked Questions
About Ever-Power
Ever-Power operates a comprehensive manufacturing facility specializing in power transmission components and protection systems. Our product portfolio includes gearbox dust covers, agricultural gearboxes, planetary reducers, worm gearboxes, PTO shafts, hydraulic cylinders, and a complete range of industrial drive components.
With advanced CNC machining centers, precision grinding equipment, and automated assembly lines, we maintain consistent quality standards across all product categories. Our engineering team works directly with customers to develop custom solutions for OEM applications and unique installation requirements.
Quality assurance procedures include dimensional inspection, material verification, and performance testing. Technical support staff provide product selection guidance, installation assistance, and troubleshooting support to ensure successful implementation of our products in your equipment.

Explore Our Product Range
PTO Shafts
Complete range of power take-off shafts for agricultural and industrial applications, including telescopic, wide-angle, and friction clutch models.
Hydraulic Cylinders
Precision-engineered hydraulic cylinders for agricultural equipment, construction machinery, and industrial automation systems.
Drive Components
Comprehensive selection of couplings, universal joints, sprockets, sheaves, and other power transmission components.
Ready to Protect Your Gearboxes?
Contact Ever-Power today for product specifications, technical assistance, and competitive quotations.
Additional information
| Editor | CX |
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Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port









