45mm SQ Hydraulic Disc Axle

SKU: N/A Category: Axles - Disc Braked Tags: alko, Australian Made, Couplemate™ Core Brand: Couplemate

45Mm Square 6 Stud Landcrusier Hydraulic Brake Axle

Price

Price range: $925.00 through $1,281.00 Inc.GST

Stud Pattern

Clear

45mm square solid steel axle
Hydraulic disc braking calipers
Galvanised rotors and anchor plates resist corrosion
Rated from 1450kg to 1600kg by bearing configuration
Designed for heavy-duty tandem boat trailer applications
Includes two Japanese slimline bearing sets

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45mm Square Hydraulic Disc Brake Axle Kit Lifetime Warranty

Couplemate’s 45mm square hydraulic disc brake axle kit is designed for heavy-duty tandem suspension boat trailers and marine applications. The assembly uses a solid steel axle and hydraulic disc braking system with genuine AL-KO hydraulic calipers.

45mm square solid steel axle
Hydraulic disc brake calipers
Galvanised disc rotors and caliper anchor plates for corrosion resistance
Includes two high-quality Japanese slimline bearing sets
Rated from 1450kg to 1600kg, depending on bearing configuration
5-stud Land Cruiser wheel pattern

Couplemate manufactures this axle assembly in Australia and provides a lifetime warranty against faulty craftsmanship, excluding consumables.

Product Description

The 45mm Square Hydraulic Disc Brake Axle Kit is engineered for heavy-duty tandem suspension setups, making it ideal for boat trailers. Because marine environments are highly corrosive, this system features a protective galvanised finish on the critical components to drastically extend your trailer’s lifespan and ensure smooth, reliable highway operation.

At the heart of the system are hydraulic disc brake calipers. These precision-engineered, slimline units deliver maximised braking efficiency while keeping a compact profile. Each kit includes high-quality Japanese slimline bearings and a precision-welded anchor plate for rugged reliability you can trust on long hauls. Plus, enjoy peace of mind knowing Couplemate Trailer Parts comes with a lifetime warranty against faulty craftsmanship (excluding consumables).

Key Features

Premium Braking: Features a slimline pair of hydraulic calipers for compact, heavy-duty stopping power.
Marine-Grade Corrosion Resistance: Ideal for tandem boat trailers due to the anti-corrosive properties of the galvanised disc braking system.
Australian-Made Quality: Couplemate proudly manufactures these in Australia to withstand harsh road and salt conditions.
Lifetime Craftsmanship Warranty: Built to last with a lifetime warranty covering any faulty craftsmanship (consumables excluded).
Versatile Stud Patterns: Readily available to match popular Land Cruiser stud patterns in both Slimline and Parallel configurations.

Technical Specifications

Axle Profile & Size	45mm Square Solid Steel
Weight Capacity Rating	1450kg (with Slimline Bearings) up to 1600kg
Brake Type	Hydraulic Disc Braking System
Caliper Brand	Couplemate Hydraulic Calipers
Finish	Galvanised Disc Rotors & Caliper Anchor Plates (Galvanised Axle beam available as an optional extra upon request)
Bearings Included	2 x High-Quality Japanese Slimline Bearing Sets
Compatible Wheel Patterns	5 Stud Land Cruiser SL 6 Stud Land Cruiser SL 5 Stud Land Cruiser Parallel 6 Stud Land Cruiser Parallel

How to Calculate Your Axle Measurements

Measure the wheel offset: Find the distance between the inside of the hub and the outside of the rubber tyre.
Add clear space: Add 50mm to that offset measurement (or choose your own custom distance between the rubber tyre and trailer chassis).
Account for both sides: Multiply that final number by 2.
Find total length: Add your overall trailer chassis width to that number.

Tip: When ordering, please verify your material profile [P] (e.g., 45mm Square), Tip-to-Tip Length [T], Hub Face-to-Face [F], Chassis Width [A], Tyre Clearance [C], Back Offset [B], Tyre to Chassis [H], and Axle Pad Centres [G]. Always verify inner and outer bearing numbers laser-engraved onto your existing bearings before swapping combinations.

Related Products

Government Compliance & Safety Standards

Ensure your custom trailer build meets all strict Australian design rules and towing regulations. Please review the official government guidelines below:

Q: Why are hydraulic disc brakes preferred for boat trailers?

A: Boat trailers use hydraulic disc brakes primarily due to the anti-corrosive characteristics of the galvanised disc braking system, which holds up far better against frequent saltwater submersion than electric alternatives.

Q: What exactly does the Couplemate Lifetime Warranty cover?

A: The lifetime warranty covers any faulty craftsmanship on Couplemate-manufactured parts. Please note that this warranty strictly does not cover normal wear-and-tear consumables such as trailer bearings and disc pads.

Q: Is the axle beam itself galvanised out of the box?

A: The standard kit includes galvanised rotors and components to fight rust. A fully galvanised axle beam is available as an optional extra and can be provided upon request when placing your order.

Additional information

Weight	60 kg
Dimensions	240 × 50 × 50 cm
Stud Pattern	Holden HT (5 x 107.95mm), Holden HQ (5 x 120.65mm), Ford (5 x 114.30mm), 5S Landcruiser (5 x 150mm), 5 Stud Landcruiser – 9/16" Studs, 6S Land Cruiser
Brake Type	Hydraulic
Beam Size	45mm Square
Axle Rating	1450kg ATM
Application	Caravans, Off-Road, Trailer

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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