GREASE CAPS | AXLE CAPS

GREASE CAPS / AXLE CAPS

Wedge has over 64 presses with capacity from 3 to 400 tons.

Wedge has been a manufacturer of Grease Caps for over 20 years. Our caps are made in the USA of quality galvanized steel and plain steel with many types 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

In addition to the Grease Caps / Axle Caps we have listed below, we also have the capability to design and manufacture a cap that fits Your Custom Specifications.

With service to the Boat Trailer, Utility Trailer, and Recreational Vehicle markets, we know your inventories are critical, that’s why we offer fast turnaround on Grease Caps and stocking programs to meet your needs.

Grease Cap Customers

• Monitor Manufacturing
• Industrial Axle
• Dexter Marine
• Martin Wheel
• QDS
• Briggs & Stratton
• MTD
• Cequent Trailer Products

• E-Z GO Textron
• Snapper
• John Deere
• 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 furnished with 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
		1478	Call for available price/quantity breaks.
	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

An Aerospace
Certified Stamper

Certified to AS9100 Rev. D, Wedge Products is an experienced aerospace parts manufacturer providing stamped metal components to the aerospace, military and industry.

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.