Couplemate Express Trailer Parts

50mm SQ Parallel Electric Brake Axle

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Price range: $919.00 through $952.00 Inc.GST

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50mm Square Electric Brake Axle Kit | Premium Australian-Made

The Couplemate™ 50mm square electric brake axle kit is designed to deliver superior strength and reliability, especially under caravan-rated braking loads. It is the preferred choice of those prioritising quality and performance.

Here’s why our 50mm Square electric bake Axle Kit stands out:

Exceptional Strength: The 50mm square electric brake axle is built with robust materials and engineering, ensuring it can withstand the demands of caravan applications.

Enhanced Braking Performance: This kit includes electric brakes that provide precise, effective braking control for your caravan. This is crucial for safety, as you can rely on the brakes to respond efficiently.

Quality Assurance: Our 50mm axle kit is crafted to the highest standards of quality and durability. It undergoes rigorous testing to ensure it meets or exceeds industry benchmarks. Caravan builders choose this axle for its reliability and long-lasting performance.

Wide Acceptance: This axle has earned the trust of top-quality caravan manufacturers. Its track record as the “axle of choice” speaks volumes about its dependability and suitability for the job.

Peace of Mind: When you choose our 50mm square electric brake axle kit, you’re investing in peace of mind.


Product Specifications: 50mm Square Electric Axle Kit

  • Axle Material: K14045 Steel
  • Brakes:
    • 10″ AL-KO Australian-Made Drums
    • 10″ Backing Plates
  • Bearings: Japanese NSK
  • Weight Options:
    • PLL – 1600kg

50mm Square Electric Axle Kit Contents

Your 50mm Square Electric Axle Kit will come supplied as a fully assembled 50mm Square Electric Axle Kit, with nuts to suit your designed stud pattern:

  • 1 x 50mm Solid Square Axle – Australian-made
  • 2 x Weld Rings – Australian-made
  • 2 x Electric Backing Plates (inc. park lever)
  • 2 x Brake Drums – Australian-made
  • 2 x Bearing Kits

Axle Lengths

All Couplemate™ axles are custom-made to order. When you place an online order, one of our team members will contact you to confirm the desired axle length.

If you’re considering axle replacement, we recommend measuring from where one wheel bolts onto the corresponding point on the opposite side (commonly known as face-to-face). You’ll also want to grab your bearing details or weight capacity.

Axle Measurements Couplemate Custom Sizes

Not entirely sure?

If you’re unsure how to work out the exact length, that’s why we’re here!

We calculate the chassis width, tyre clearance, mudguards, and wheel backspace to ensure that the axle you receive is a proper fit.

Our team can chat Monday to Friday, 8:00 a.m. to 5:00 p.m. 


The Couplemate™ Confidence

We’re confident in our axles and want you to be, too.

All Couplemate™ axles are made in our Brisbane warehouse by our expert team of machinists and boilermakers. Our commitment to excellence begins at the first point of contact and extends through every stage of the process.

We understand that the axles are the backbone of stability and safety in your trailer or caravan, and that’s why we leave no stone unturned in guaranteeing their reliability. We stand by the quality of our axles, ensuring that materials and workmanship are free of defects throughout the product’s entire service life.

For detailed information regarding our warranty policy, you can access it online anytime.

Couplemate™ is your trusted partner for axles you can rely on at every step.


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Frequently Asked Questions: 50mm Square Parallel Electric Brake Axle

What is the load rating for a 50mm Square Parallel Electric Brake Axle?

  • Standard Rating: This axle profile typically has a load capacity of up to 1600kg per axle.
  • Application: It is highly optimized for medium to heavy-duty configurations, commonly used in single-axle or tandem-axle trailer setups.
  • Bearing Profile Impact: While a solid 50mm steel bar can structurally handle more weight, the overall rating is explicitly governed by the parallel machining profile at the stub ends.

What makes a “Parallel” bearing profile different from standard profiles?
  • Dual Large Bearings: Parallel axles use the same large inner bearing cone and cup (typically L68149) in both the inner and outer positions.
  • Load Distribution: Standard setups (like Slimline) feature a smaller outer bearing, whereas the parallel layout evenly disperses load pressure across the entire spindle.
  • Durability: This design offers superior wear resistance and long-term durability under heavy towing conditions on rugged terrain.

What components are included in an assembled 50mm electric braked axle?
  • Axle Core: A heavy-duty, solid 50mm square natural steel or galvanized bar, pre-machined with parallel spindles.
  • Braking Assemblies: Dual 10-inch electric backing plates featuring pre-installed brake shoes, magnets, and park brake levers.
  • Drums & Bearings: Two matching 10-inch brake drums assembled with parallel bearings, grease seals, and dust caps.
  • Weld Flanges: Integrated electric brake mounting flanges securely welded onto the axle tube to lock the backing plates into alignment.

What stud patterns and sizing measurements are available?
  • Common Stud Patterns: Readily manufactured in 5-Stud Ford (5×114.3mm PCD) as well as heavy-duty 5-Stud or 6-Stud Toyota Land Cruiser configurations.
  • Measurement Requirements: Custom-built or ordered based on exact measurements from “Hub Face to Hub Face” or “Tip to Tip” length specifications.
  • Chassis Clearances: Requires a minimum operational clearance (typically 155mm) measured from the hub face to the chassis side rails.

What automotive wiring is recommended for these electric brakes?
  • Wire Thickness: Industry standards recommend using 4mm single-core automotive wire rated at 15A for single- and tandem-axle setups.
  • Upgraded Wiring: Upgrading to a heavier 5mm wire is recommended for larger triple- or quad-axle applications to mitigate voltage drops.
  • Controller Connectivity: Wire lines directly hook the electric backing plate magnets back to the vehicle’s cabin brake controller unit via the rear plug.

 

Additional information

Weight 80 kg
Dimensions 240 × 50 × 50 cm
Beam Size

50mm Square

Axle Rating

1600kg ATM

Axle Type

10-inch Electric

Axle Style

Straight

Bearing Profile

Brake Type

Electric

Brand

Couplemate

Drum Size

10-Inch – Inner Dia

Hub Cap

63mm

NSK Bearing #

68149/10

Electric Brakes

Ford, Ford OffRoad Parallel, 5 Stud Landcruiser OffRoad Parallel, 5 Stud Landcruiser Parallel, 6 Stud Landcruiser OffRoad Parallel, 6 Stud Landcruiser Parallel

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.

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