The OEM Kugellager 15x21x4mm is a radial ball bearing designed for smooth, low-friction rotation in small-scale mechanical assemblies. Its compact dimensions make it suitable for tight-fit applications where space is limited.
Radial ball bearing design ensures even load distribution across the shaft
15 mm inner diameter fits standard small-diameter axles in RC models
21 mm outer diameter and 4 mm width keep the profile slim for confined spaces
Set of 10 pieces allows full replacement or spares for multi-bearing builds
Das zeichnet das OEM Kugellager 15x21x4mm aus
Unlike generic bearings, this OEM-spec unit is manufactured to consistent tolerances, ensuring uniform running precision across all 10 pieces in the set. The radial construction handles thrust loads in one direction while maintaining minimal rotational resistance.
Ideal für...
RC model builders and workshop technicians who need reliable, precision-machined bearings for steering linkages, wheel hubs, or drive shafts in 1:10 and 1:12 scale vehicles. Also suited for small electric motors and gear assemblies where bearing longevity matters.
Anwendung von OEM Kugellager 15x21x4mm
Clean the axle and housing bore before installation to remove debris
Press or slide the bearing onto the shaft, ensuring it seats fully without tilting
Verify smooth rotation by hand before mounting the assembly
Replace all bearings in a set simultaneously for consistent performance
OEM is a generic manufacturer brand supplied through the Brack/Alltron distribution network. Products are standardised components with consistent specifications across production batches. No brand-specific heritage or proprietary technology claims are made.
It is a radial ball bearing used in RC models, small electric motors, steering linkages, wheel hubs, and gear assemblies where low-friction rotation and compact dimensions are required.
Inner diameter: 15 mm, outer diameter: 21 mm, width: 4 mm. These dimensions match standard small-scale RC and model-building specifications.
The set contains 10 identical bearings, allowing full replacement or spare parts for multi-bearing builds.
The bearing is a standard steel radial ball bearing. The manufacturer does not specify a corrosion-resistant or stainless variant in the product data.
The 15x21x4mm size is a common industrial standard. It fits any shaft with a 15 mm diameter and any housing with a 21 mm bore, regardless of brand.
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