Idler 3500lbs Trailer Spring Axle With 10inch Electric Brake and Drum
An idler 3500lbs trailer spring axle with a 10-inch electric brake and drum is designed to support a maximum weight of 3500 pounds. The “idler” designation indicates that this axle has no brake assembly installed, meaning it does not provide any braking capability. Instead, it is designed to work with a separate brake system, such as electric brakes.
An idler 3500lbs trailer spring axle with a 10-inch electric brake and drum is a type of trailer axle that is designed to support a maximum weight of 3500 pounds. The "idler" designation indicates that this axle does not have a brake assembly installed on it, meaning it does not provide any braking capability on its own. Instead, it is designed to work in conjunction with a separate brake system, such as electric brakes.
The 10-inch electric brake and drum assembly is a separate component that must be installed on the axle. The brake assembly consists of a brake drum, which is attached to the axle, and an electric brake assembly, which is mounted inside the drum. When the brake is activated, the pads inside the electric brake assembly press against the brake drum, creating friction and slowing the wheel's rotation.
The 10-inch brake assembly is a typical size for trailer axles and is suitable for many types of trailers, including utility, boat, and travel trailers. It provides reliable and efficient braking performance, which is essential for safe and controlled trailer operation.
The spring suspension system on this axle consists of leaf springs mounted to the trailer frame and supporting the trailer's weight and contents. The leaf springs provide a cushioning effect, absorbing shocks and vibrations during travel and helping to protect the trailer and its contents from damage.
Overall, an idler 3500lbs trailer spring axle with a 10-inch electric brake and drum is a reliable and efficient suspension and brake system for many types of trailers. It provides the necessary support and braking capability to safely transport loads of up to 3500 pounds.

Hub Face | 89" |
Spring center | 74" |
Capacity Per Axle (LBS) | 3500lbs |
Hubs/drums | 5 Stud hub drum |
PCD | 101.6 or114.3mm |
Size | 1/2" UNF |
Tube | 2-3/8" hollow tube. 10inch electric brake and drum |
Type of Spring Axle
There are several types of spring axles, including:
- Single Axle: A single axle is a suspension system that uses a beam with leaf springs to support the trailer's weight. Single axles are commonly used on smaller trailers, such as utility trailers and small boat trailers.
- Tandem Axle: A tandem axle is a suspension system that uses two axles mounted in tandem to provide increased support and weight capacity for the trailer. Tandem axles are commonly used on larger trailers and commercial applications.
- Triple Axle: A triple axle is a suspension system that uses three axles mounted in tandem to provide even greater weight capacity for the trailer. Triple axles are commonly used on heavy-duty commercial trailers, such as large equipment trailers and tanker trailers.
- Underslung Axle: An underslung axle is a type of spring axle where the axle is mounted below the leaf springs. Underslung axles are commonly used on trailers where ground clearance is a concern, such as horse trailers and low-profile utility trailers.
- Overslung Axle: An overslung axle is a type of spring axle where the axle is mounted above the leaf springs. Overslung axles are commonly used on trailers where increased ground clearance is desired, such as off-road trailers and utility trailers.
- Rubber Torsion Axle: A rubber torsion axle is a suspension system that uses rubber cords inside the axle tube to provide support and cushioning for the trailer. Rubber torsion axles are known for their smooth ride and low maintenance requirements.
Overall, the type of spring axle used depends on the weight capacity, terrain, and intended use of the trailer. Every kind of axle has its advantages and disadvantages, and it's essential to select the right kind of axle for the specific application to ensure safe and reliable trailer operation.

How to install Spring Axles?
Installing spring axles on a trailer is a relatively straightforward process that can be completed with essential tools and some mechanical knowledge. Here are the general steps to install spring axles:
- Prepare the Trailer Frame: Before installing the new axle, inspect the trailer frame to ensure it is straight and free of any damage or corrosion. If any damage or deterioration is present, repair or replace the affected areas before installing the new axle.
- Remove the Old Axle: Remove the old axle by loosening and removing the nuts and bolts that connect the axle to the trailer frame. During this process, ensure to support the trailer with jack stands or other appropriate support devices.
- Install the New Axle: Install the new axle by placing it on the leaf springs and aligning it with the mounting brackets on the trailer frame. Tighten the nuts and bolts to the manufacturer's recommended torque specifications.
- Attach the Wheels and Tires: Attach the wheels and tires to the new axle, making sure to tighten the lug nuts to the manufacturer's recommended torque specifications.
- Connect the Brake System (if applicable): If the trailer has brakes, connect the brake system to the brake flange on the new axle. Follow the manufacturer's instructions for connecting and bleeding the brake system.
- Adjust the Alignment: Adjust the alignment of the new axle by checking the toe-in and camber angles. Make necessary adjustments to ensure the wheels are aligned correctly, and the trailer tracks straight.
- Test the Trailer: Test the trailer by towing it a short distance and checking for proper alignment, smooth ride, and brake function. Make any necessary adjustments before using the trailer for extended periods.
Following the manufacturer's instructions and safety guidelines is essential when installing spring axles on a trailer. Proper installation and maintenance of the axle is essential for safe and reliable trailer operation.

Which Spring Axle is more suitable for you?
The type of spring axle that is most suitable for a specific trailer depends on several factors, including the weight capacity of the trailer, the intended use of the trailer, and the terrain on which the trailer will be operated. Here are some considerations to help determine which spring axle is more suitable:
Weight Capacity: The trailer's weight capacity is critical in selecting the correct spring axle. It is essential to choose a spring axle with a weight capacity that is greater than the maximum weight of the trailer and its contents.
Terrain: The terrain on which the trailer will be operated can also impact the choice of spring axle. For example, if the trailer is used on rough terrain, a rubber torsion or underslung axle may provide a smoother ride than a straight axle.
Intended Use: The intended use of the trailer is another important factor in selecting the correct spring axle. For example, if the trailer will be used for off-road applications, a drop axle or over-slung axle may provide increased ground clearance.
Maintenance Requirements: Different types of spring axles have different maintenance requirements. For example, rubber torsion axles require less maintenance than leaf spring axles.
Cost: The cost of the spring axle is also a consideration, as some types of axles are more expensive than others. However, it is important to balance cost with the specific needs of the trailer to ensure safe and reliable operation.
Overall, selecting the appropriate spring axle for the specific trailer is essential based on carefully evaluating the trailer's weight capacity, intended use, terrain, maintenance requirements, and cost. Consulting with a professional trailer manufacturer or mechanic can help ensure that the right spring axle is selected for the trailer.
FAQ
1. What is the production process?
A: Production process including raw material cutting, machine processing, grinding, accessories cleaning, assembly, cleaning, stoving, oil coating, cover pressing, testing, and packaging.
2. How to control the product's quality?
A: Combining advanced equipment and strict management, we provide a high standard and quality slewing drive for our customers worldwide.
3: How long is your delivery time?
A: If there is stock, it is within seven days; if there is no stock, it is 25-45 days, depending on the quantity.
4. Are you a trading company or a manufacturer?
A: We have our factory with 20 years of experience in slewing drive; our type is factory + trade.
5: What are your terms of payment?
A: Stocks goods,100% prepaid. If goods need to produce,30% is prepaid, and the balance is paid before shipment. For big orders over 50000 USD, we can accept L/C At sight.
6. What is transportation?
A: Small quantity, by express, such as DHL, UPS, TNT, FEDEX. If large quantity, by sea or air.
7. Can you provide OEM service?
A: Yes, we provide OEM service, do as your size, packing, and other requirements.
Additional information
| edited | by hyw |
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Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port






