AL-KO 2051Ab PLUS/COMPACT Brake Drum 200×50, 5×112, 1932110

Product detailed description

AL-KO 2051Ab PLUS/COMPACT Brake Drum 200 × 50 mm

The genuine AL-KO brake drum 1932110 (previous part number 586450) is designed for AL-KO 2051Ab PLUS/COMPACT wheel brakes. This is a heavy-duty version used on axles with loads up to 1500 kg per axle / 750 kg per wheel.

The brake drum is designed for a 200 × 50 mm brake – the internal diameter of the brake drum is 200 mm and the brake shoes are 50 mm wide. The wheel PCD is 5×112 with M12×1.5 wheel bolt threads.

Brake drum including compact bearing

The brake drum is supplied with a pre-installed double-row compact bearing 39 × 72 × 37 mm. The internal diameter of the bearing for the axle stub is 39 mm.

The separate genuine AL-KO compact bearing kit has part number 1224803. This type of drum also uses a hub cap with a diameter of 55 mm.

Main identification details

• wheel brake type 2051Ab
• brake size 200 × 50 mm
• previous AL-KO part number 586450
• current AL-KO part number 1932110
• version PLUS / COMPACT
• maximum load 750 kg per wheel
• maximum axle load 1500 kg
• including bearing 39 × 72 × 37 mm
• wheel PCD 5×112, M12×1.5
• hub cap diameter 55 mm

Casting numbers

For correct identification, we also recommend checking the casting number directly on the original brake drum. Depending on the production version, this drum can be found particularly with the following markings:

• 583928
• 564829
• 1931007

The appearance of a new brake drum may therefore differ slightly from an older original brake drum even though it is the correct replacement part.

Older and newer brake drum versions

AL-KO has modified the casting design during production. Newer versions may have fewer cooling fins than the original brake drum. This difference alone does not mean that it is a different type of drum.

For selecting the correct replacement part, the most important identifiers are the AL-KO part number, casting number, wheel brake version and axle ETI number, rather than appearance or the number of cooling fins alone.

ETI – precise AL-KO identification

AL-KO uses the ETI system for precise identification of axles, wheel brakes and their replacement parts. The ETI number can be found on the axle identification plate and usually begins with 811....

The brake drum 1932110 / 586450 has been used on various AL-KO axle versions. If there is any uncertainty, we therefore recommend checking compatibility using the complete ETI number.

Important – other AL-KO 2051 brake drums

The AL-KO 2051 designation alone is not sufficient to select the correct brake drum. Several different brake drum versions are available for 2051-series wheel brakes.

Another AL-KO 2051 brake drum may also have a 200 × 50 mm brake size, 5×112 wheel PCD and a bearing with a 39 mm internal diameter. The different versions should therefore be identified using the AL-KO part number, casting number and axle ETI number.

AL-KO 2051 brake shoes

The wheel brake uses 200 × 50 mm brake shoes. When replacing the brake drum, we recommend checking the condition of the brake shoes, springs, adjustment mechanism, brake cables and the other wheel brake components.

AL-KO 2051 wheel brakes are available both with manual adjustment and as the 2051 AAA version with automatic adjustment. Brake shoes must therefore always be selected according to the specific wheel brake version.

Important installation information

After removing the brake drum, AL-KO recommends using a new wheel hub flange nut during reassembly. The braking system and wheel bearing assembly are safety-critical components of the trailer, so installation and correct brake operation should be checked by a qualified workshop.