63mm Australian Dust Cap – Rubber Grommet

Name: 63mm Australian Grommet Dust Cap Pair -Stainless (Pair)
Brand: Couplemate
SKU: CAP-63-G
Price: $22.51
Availability: InStock

SKU: CAP-63-G Category: Bearing Caps - Buddies Tag: Couplemate™ Core Brand: Couplemate

Price

$22.51 Inc.GST

Shipping

Select delivery location

63mm Australian Grommet Dust Cap (Pair)

Our 63mm Australian grommet dust caps suit the following Hubs and bearing sets;

Parallel
Two Tonne

Some hubs do not have machined chamfers in the boss and rear of the wheel hub. Insertion can be brutal. Using a pipe of the correct diameter greatly improves installation.

The dust cap can loosen if you hammer it into place too often, even on the first install. Once the dust cap is home, stop hitting it. The extra hit can make it loose-fitting.

Should I fill my grease cap to the brim with grease?

Answer: No. The grease cap is designed to capture excess grease from the bearing cavity. Insert your grease cap dry.

Grease is generally oversupplied during greasing. It will exit the bearing cavity at high speeds and during initial heating and cooling. Note that grease never re-enters the bearing cavity once it is caught in the grease cap.

What is the purpose of the grease cap?

To catch grease?
Or to prevent dust from entering?

But what exactly are grease caps used? Are they simply decorative accessories for your trailer, or do they serve a real purpose?

Although a shiny chrome grease cap can be a nice touch on a rather dull-looking trailer wheel, it serves a fundamental purpose. Grease caps are the small, round metal covers at the centre of the wheel hub. Sometimes, they’re called dust caps, but for clarity, we’ll call them grease caps from this point forward.

Finally, grease caps protect your wheel bearings from the dirt, dust, sand, water, salt and road grime that can (and will) destroy bearings. Without grease caps, your wheel bearings wouldn’t survive long out on the road.

How Grease Caps Work

Complete Range of Dust Caps

63mm Australian Dust Cap & Rubber Grommet FAQ

Here are the quick facts and details you need to know about the 63mm Australian Dust Cap with Rubber Grommet for your trailer or caravan hubs.

Advantages

Premium Protection: Keeps dust, dirt, water, and road grime out of your wheel bearings.
Easy Maintenance: The integrated rubber grommet lets you lubricate quickly without removing the entire steel cap.
Australian Standard Fit: Specifically machined to perfectly fit standard 63mm (2.5-inch) hub bores commonly used in Australia.
Durable Construction: Built from heavy-duty zinc-plated steel to resist rust and corrosion on tough terrains.

Disadvantages

Grommet Wear: The rubber plug can degrade over time from UV exposure or heat and may need periodic replacement.
Specific Fit: Only fits precise 63mm hub bores; will not accommodate non-standard or metric-variant imports.
Tight Installation: Requires a firm, even strike with a mallet to install properly, which can be tricky without the right tools.

Frequently Asked Questions (FAQ)

What is the purpose of the rubber grommet? It provides a removable access point, so you can quickly grease your bearings with a grease gun without removing the main metal cap.
Will this fit my standard Australian trailer? Yes, if your hub has a standard 63mm (approx. 2.5″) opening, this cap is designed exactly for that specification.
Are the rubber plugs sold separately if I lose one? Yes, replacement rubber grommets are commonly available if they become lost or worn out over time.
How do I install the dust cap without damaging it? We recommend using a dust cap installation tool or a soft-faced mallet to tap it evenly into the hub bore.

Additional information

Weight	0.5 kg
Dimensions	20 × 5 × 5 cm

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.