12″ 7K electric brake

Key Features

Precise and controllable adjustment of mechanical arm clearance and brake tension
Purely mechanical structure with low failure rate, ensuring higher reliability for field operations.
12-inch large brake drum with strong braking performance under heavy loads
Simple and robust structure with low maintenance requirements

Product Overview

This 12-inch American-style manually adjustable heavy-duty brake features a manually adjustable brake clearance design, allowing precise fine-tuning of brake shoe tension. With a purely mechanical structure and low failure rate, it is ideal for engineering trailers, agricultural heavy-duty trailers, and long-term use in outdoor fixed applications. The large 12-inch brake drum ensures robust braking performance, while the double-layer corrosion-resistant housing withstands harsh outdoor conditions.

Core Specification

project	Specification Details
specified load	12000LB
type	12-inch drum brake with manual adjustment mechanism (for manually regulating the brake shoe clearance, suitable for heavy-duty machinery drum brakes)
caliber	4.5-inch round tube heavy-load shaft beam
Process Flow	Cast molding → Machining → Quenching and tempering heat treatment → Electrostatic galvanizing for corrosion protection → Manual adjustment mechanism assembly and testing
Hub nut	99/16″–18 UNF American-made fine-threaded flange nut, suitable for 8-hole heavy-duty hubs
customization	Supports customizing CAD/DWG drawings

Matters Need Attention

Included Parts

2×12K pre-lubricated heavy-load bearing kits
12-inch wheel hub + manually adjustable brake assembly (8 holes)
4.5-inch heavy-load shaft beam
9/16–18 wheel hub nuts, manual adjustment fork, brake shoe spring assembly

Heavy-duty agricultural trailers, engineering flatbed trailers, and heavy-duty trailers for field operations
Heavy-duty trailer for long-term fixed outdoor operation under heavy loads
Modification of mechanical braking systems for 12K heavy-duty axle assemblies

Maintain (Service)

Clean the brakes of mud, sand, and other debris after working in muddy conditions outdoors.
Inspect brake shoe wear quarterly and manually adjust the brake clearance as needed.
Check spring elasticity, hub seal, and bearing condition
Apply lubricating grease to the bearings regularly; avoid overloading.

The manipulator arm features a optimized structural design with reliable heavy-load braking stability.

Corrosion-resistant and wear-resistant, with long service life under harsh outdoor conditions.

Simple structure, facilitating on-site adjustment and maintenance.

Reduce driving vibrations for safer and smoother driving

Adaptation projects; heavy-duty agricultural trailers

Reduce the frequency and cost of long-term maintenance.