Modul Drum Brake Axle Type B
The Modul Drum Brake Axle Type B with a compact and specialized design is an ideal option for light and medium-duty cargo vehicles that require high load capacity along with efficiency and durability. This product is available under codes 81500120001 and 81500120015 and has an axle load capacity of up to 9,000 kilograms. The integrated Ø300 drum brake system provides both high safety and stable braking performance.
The GM distance is designed at 360 and 400 mm, while BM is 940 mm, FM is 1100 mm, and the kingpin length (SP) ranges from 1950 to 1995 mm, offering proper compatibility for installation across various vehicles equipped with standard 10-bolt 175/225 wheels with M22×1.5 bolts.
The recommended tire sizes for this axle are 235/75 R 17.5 and 245/70 R 17.5, ensuring smooth operation and improved durability.
Axle Technical Data Table
| Product code | Axle Load | Brake system | GM | BM | FM | SP | OH/K | Tyres Recommended |
|---|---|---|---|---|---|---|---|---|
| 81500120001 | 9000kg | Drum Brake Ø300 | 360 | 940 | 1100 | 1950 | 175/225 10 Bolts M22 x 1.5 |
235/75 R 17.5 245/70 R 17.5 |
| 81500120015 | 400 | 1995 |
Suspension System Specifications
| E | C | F | D | G | Empty without air X(mm) | Loaded without air X(mm) | Air Spring Bracket(mm) | ST | FH |
|---|---|---|---|---|---|---|---|---|---|
| 255 | 130 | 35 | 83 | 87 | 140 | 130 | - | 268 | 240 |
| 180 | 165 | 50 | 270 |
Axle Technical Data Table
Suspension System Specifications
In the suspension system section, the 17.5 square spring drum axle is designed with an E distance of 140 mm and an F value of 130 mm, and its reinforcement component thickness ranges from 35 to 87 mm. Precise dimensional calculations for both unloaded and air-sprung loaded conditions, along with the air spring bracket positioning, enable easy installation and smooth suspension performance.
This combination of features, together with the square structure and durable drum brake system, extends component lifespan and reduces maintenance costs. As a result, this axle is a suitable choice for lighter fleets and applications that require durability, safety, and fuel efficiency.

