50mm Square Axle Caravan Trailer Boat
A 50mm square axle is the best choice for towing your rig straight and true. Loaded to 2.25t, this axle will never experience vibration fatigue.
Couplemate manufacturers axles from BlueScope steel in our Wynnum, Brisbane workshops.
Question: What is the difference between a good and bad axle?
A bad axle will have a bearing tolerance of more than 0.05mm. A good axle will have a bearing tolerance of 0.02mm to 0.04mm. Less than 0.02 tolerance is considered a tight fit and is usually reserved for ball bearings,
If your bearing has a bearing shadow under the bearing on the journal, that indicates a gap between the bearing and the journal. This gap significantly lowers bearing life. A good axle may have a bearing life of between 20,000 klms or more.
Solid Axle rating
- Holden Bearing Profile – 1,000kg Max
- Ford Bearing Profile – 1,450kg Max
- Dexter Bearing Profile – 1,590kg Max
- Ford Parallel Bearing Profile – 1,600kg Max
- Al-ko Bearing Profile – 2,250kg Max
- Dexter Bearing Profile – 2,250kg Max
- Al-ko Bearing Profile – 3,000kg Max
Note: After ordering, please advise your axle length, either tip-to-tip length or face-to-face measurement, and axle profile, such as 2t, 3t, parallel, or slimline.
So, where does this steel come from?
Newcastle, in New South Wales, continues its rolling bar mill, which pulls its feedstock from Whyalla, South Australia.
Australian Steel is a fascinating story. It is a pity that the television media’s reporting on Australian success stories is unsupported.
Calculating The Correct Axle Measurements
- Measure the offset wheel. The wheel offset is the distance between the hub’s inside and the rubber’s outside.
- Add 50 mm to the offset. Alternatively, choose your own distance between the rubber and the chassis.
- Multiply by 2 for both sides. Add your chassis width to the above number.
Still unsure of what measurements to take? Check out this handy guide below:
[P] – Check material specifications. What size and profile is the axle (for example, 45mm Square)
[T] – Overall axle length (tip to tip)
[F] – Hub face-to-hub face measurement
[A] – Chassis width
[C] – Tyre clearance
[B] – Back offset
[H] – Tyre to chassis
[G] – Axle pad centres
Identifying Bearing Combinations
You will also need to identify your bearing combination, which can be done by pulling off a hub and bearings and locating the number laser engraved onto the bearing. You will require both the inner and the outer bearing number.
How to calculate total axle length
The Face to Face measurements to calculate Tip to Tip measurement is as follows: –
- S/L 10” Electric Drum – 103mm
- S/L 150mm Lazy – 100mm
- 10” Disk Rotor – 98mm
- PLL 10” Electric Drum – 122mm
- 2T 12” Electric Drum – 172mm
- 2T 205mm Lazy – 172mm
Solid Axles rarely cause problems.
The price of a 50mm square parallel axle can vary greatly. Axles are manufactured in various places, including India, China, Malaysia, and Australia.
The only real problems come from imported steel, which causes steel fractures along the beam and consistent hardness.
Other Common Problems and Tips:
If your square parallel trailer caravan axle is not engineered correctly, you may experience excessive bearing wear.
- Rough seal journals can cause a loss of grease through the rear seal.
- Some suppliers supply non-virgin or scrap steel and forge this steel into a solid square or round shape for axle production. Always ask for Australian Steel.
- Chinese bearings are the second most significant cause of axle failure.
- If you plan to get onto a highway, use Japanese bearings.
- Combining Japanese Bearings and a Square Axle will significantly help you with lower rig maintenance.
- Are your tandem tyres wearing unevenly? How to Align Caravan Wheels
- Axle Steel explained.
Solutions:
We rarely have problems with these larger kits.
A Couplemate assembled axle with Japanese bearings gives you our unconditional guarantee of a well-made, well-backed axle assembly.
Caravan upgrades are explained here.
Other Square Axles
- 50mm Square Stub Axle
- Parallel Axle (Bare) – .50mm Square
- 2T Axle (Bare) – 50mm Square
- 50mm Square Overlay Axle Parallel
- 50mm Square Galvanised Lazy Axle
- Mechanical Galvanised Disc Brake Axle – 50mm Square
- 50mm Square Overlay Axle 2t – Galvanised
- Unbraked Lazy Axle Kit – 50mm Square
- 50mm Square 10-Inch Electric Brake Axle Kit
- 50mm Square Galvanised Axle
- 45mm – 50mm Square Overlay Axle
- 2t Hydraulic Disc Braked Axle
Finally, a hollow axle is a lightweight solution to a heavy-duty square axle.
Additional information
Weight | 60 kg |
---|---|
Dimensions | 230 × 30 × 30 cm |
Length | 1475mm T/T, 1500mm T/T, 1525mm T/T, 1550mm T/T, 1575mm T/T, 1600mm T/T, 1625mm T/T, 1650mm T/T, 1675mm T/T, 1700mm T/T, 1725mm T/T, 1750mm T/T, 1775mm T/T, 1800mm T/T, 1825mm T/T, 1850mm T/T, 1875mm T/T, 1900mm T/T, 1925mm T/T, 1950mm T/T, 1975mm T/T, 2000mm T/T, 2025mm T/T, 2050mm T/T, 2075mm T/T, 2100mm T/T, 2125mm T/T, 2150mm T/T, 2175mm T/T, 2200mm T/T, 2225mm T/T, 2250mm T/T, 2275mm T/T, 2300mm T/T, 2325mm T/T, 2350mm T/T, 2375mm T/T, 2400mm T/T, 2425mm T/T, 2450mm T/T, 2475mm T/T |
Beam Size | 50mm Square |
Axle Type | Bare axles (no hubs) |
Axle Style | Straight |
Coating | Natural |
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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