GREASE CAPS | AXLE CAPS
CUSTOM SIZING • GALVANIZED • ZINC AVAILABLE
GREASE CAPS / AXLE CAPS
BUY CAPS DIRECT FROM THE MANUFACTURER
Wedge has over 64 presses with capacity from 3 to 400 tons.
Wedge has served as a manufacturer of grease caps for more than 20 years. Our durable axle caps are produced in the USA from quality galvanized steel and plain steel, and we offer them with a wide variety of plating options available.
- Serving the Recreation Vehicle & Trailer Market
- Sizes and Shapes to Your Specifications!
- All Caps are Galvanized on Both Sides
- Zinc Plated Caps Available
Beyond the standard grease caps and axle caps we list, we have the full capability to custom design and manufacture a cap that fits Your Custom Specifications.
By supporting the Boat Trailer, Utility Trailer, and Recreational Vehicle markets, we recognize that your inventories are critical, which is why we provide fast turnaround on grease caps and stocking programs to meet your demands.
Grease Cap Customers
- Monitor Manufacturing
- Industrial Axle
- Dexter Marine
- Martin Wheel
- QDS
- Briggs & Stratton
- MTD
- Cequent Trailer Products
- E-Z GO Textron
- Snapper
- Secondary Machining
- Tie-Down Engineering
- Dexter Axle
- Redneck Trailer Supply
- Martin Wheel
- QDS
| A | B | C | ||||
| Grease Cap Specifications | Part No. |
Diameter | Length Under Flange |
Overall Height |
Mat Thickness |
|
 Note: Can be furnishedwith 1-3/16″ diameter hole. * R = .650 |
21-2 | 1.781 | .27 | .875 | .03 | |
| 21-3B | 1.985 | .31 | 1.20 | .03 | ||
| 21-3A | 1.990 | .31 | 1.25 | .03 | ||
| 21-1A | 2.450 | .25 | 1.34 | .03 | ||
| 21-4 | 2.705 | .533 | 2.063 | .03 | ||
| 21-6 | 2.841 | .37 | 1.12 | .042 | ||
| 21-8 | 3.630 | .50 | 1.875 | .03 | ||
| Rubber Plugs for Lube Caps | ||||||
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1478 | Call for available price/quantity breaks. |
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| Wedge Rubber Plugs – Now Available In RED and YELLOW | ||||||
| A | B | C | ||||
| Grease Cap Specifications | Part No. |
Diameter | Length Under Flange |
Overall Height |
Mat Thickness |
|
 |
21-41-1 | 1.990 | .31 | 1.400 | .03 | |
| 21-42-1 | 2.450 | .31 | 1.525 | .03 | ||
| 21-43-1 | 2.725 | .31 | 1.525 | .03 | ||
| 21-44-1 | 3.630 | .50 | 1.625 | .03 | ||
| A | B | C | ||||
| Grease Cap Specifications | Part No. |
Diameter | Length Under Flange |
Overall Height |
Mat Thickness |
|
 |
21-39 | 2.720 | .31 | 1.34 | .06 | |
| 1005 | 3.160 | .38 | 1.78 | .06 | ||
| 21-40 | 4.734 | .236 | 1.811 | .06 | ||
| 21-50 | 5.667 | .437 | 1.656 | .03 | ||
Axle Grease Cap FAQs
What is a grease cap?
A grease cap, also known as a dust cap or hub cap, is a protective covering used in automotive and machinery applications to safeguard wheel bearings from contaminants and to retain lubricating grease within the bearing assembly.
Are all trailer dust caps the same size?
No, trailer dust caps are not universally the same size. The size of trailer dust caps can vary depending on the specific trailer axle and wheel assembly. Trailers come in various types and sizes, and different trailer manufacturers may use different sizes of axles and bearings.
Are metal dust caps better than plastic?
The choice between metal and plastic dust caps depends on various factors, including the specific application, environmental conditions, and personal preferences. Both metal and plastic dust caps have their advantages and disadvantages.
Metal Dust Caps:
Durability: Metal dust caps, often made of steel or aluminum, tend to be more durable and resistant to wear and tear. They are less likely to crack or break under stress or harsh conditions.
Temperature Resistance: Metal dust caps typically have better heat resistance compared to plastic. This can be an important factor in applications where high temperatures are a consideration.
Longevity: Due to their durability, metal dust caps may have a longer lifespan, making them suitable for heavy-duty or high-impact environments.
Plastic Dust Caps:
Corrosion Resistance: Plastic dust caps are generally more resistant to corrosion, making them a good choice for applications where exposure to moisture or chemicals is a concern.
Lightweight: Plastic dust caps are lighter than metal ones, which may be advantageous in situations where minimizing weight is a priority, such as in certain automotive or aerospace applications.
Cost: Plastic dust caps are often less expensive than metal ones, making them a cost-effective choice, especially for applications where budget considerations are important.
Ultimately, the choice between metal and plastic dust caps depends on the specific requirements of the application. If durability, heat resistance, and a longer lifespan are critical, metal dust caps may be the preferred choice. On the other hand, if corrosion resistance, lightweight design, and cost-effectiveness are more important, plastic dust caps might be a better fit. It’s essential to consider the environmental conditions, the level of stress the dust cap will undergo, and any specific requirements dictated by the application.
Trailer Axle Grease Cap Sizes
Our wide selection of trailer dust cap sizes ensures a proper fit for a variety of trailer models. Each trailer axle grease cap is designed to protect wheel bearings from dirt, moisture, and other contaminants, helping to extend the life of your axle components and maintain smooth trailer operation.
We provide accurate bearing dust cap sizes to make maintenance and replacements simple and efficient. Using the correct trailer axle grease cap prevents corrosion, reduces wear on critical components, and keeps trailers running safely under heavy loads.
Choosing the right trailer dust cap sizes and bearing dust cap sizes is essential for long-term durability and reliable trailer performance. Our high-quality trailer axle grease cap products are built for a secure fit, protecting bearings and ensuring consistent performance over time.
