B17-99D-2RS Deep Groove Ball Bearing | Automotive Alternator Bearing with Dual Rubber Seals | 17×52×17 mm

Engineered specifically for demanding powertrain environments and heavy-duty machinery, the B17-99 is a specialized automotive-grade deep groove ball bearing. Designed in an "Open" configuration (without shields or rubber seals), this bearing allows for unrestricted circulation of external lubricants, making it the premier choice for enclosed gearboxes or oil-bath systems. With a robust 17x52x17 mm geometry, it boasts exceptional radial load capacities and can handle substantial vibrations, rendering it indispensable for high-stress applications like automotive alternators, starter motors, and industrial transmission systems.

Engineered specifically for demanding applications that involve continuous vibrations, high radial loads, and exposure to environmental debris, the B15-69-2RS is a premium, reinforced deep groove ball bearing. Featuring high-performance dual contact rubber seals (2RS), it excel at keeping out road dust, moisture, and fine particulates while locking in high-grade factory grease. Because these heavy-duty nitrile rubber seals maintain direct contact with the inner ring, the B15-69-2RS ensures superior contaminant exclusion under-hood and in outdoor environments, making it the premier choice for 15mm shaft applications like vehicle charging systems, heavy power tools, and industrial electric motors.

Belonging to our specialized automotive component line, the B17-127D-2RS is a heavy-duty, single-row deep groove ball bearing engineered with double synthetic rubber seals. Featuring a 17 mm bore, a robust 62 mm outer diameter, and a wide 20 mm profile, this bearing is constructed to withstand significant radial and shock loads. Unlike shielded variants, the 2RS designation indicates contact rubber seals on both sides, making it highly resilient against water ingress, road grit, and extreme environmental contaminants. Pre-lubricated at the factory with premium high-temperature grease, this bearing guarantees a long, maintenance-free service life in demanding automotive drivetrains and electrical assemblies.

The B17-99D-2RS is a high-precision, single-row deep groove ball bearing specifically engineered to provide flawless rotational support in high-vibration and demanding mechanical systems. Distinct from standard metal-shielded options, this specialized unit features a double-sided nitrile rubber sealing system (2RS). This provides an impenetrable physical blockade against water, fine dust, and abrasive particles while trapping the high-performance internal grease. Manufactured to precise 17x52x17 mm dimensions, the B17-99D-2RS is universally recognized as a critical replacement component for automotive alternators, generators, and heavy-duty electric motors.

The B8-85D-2RS is a specialized, compact single-row deep groove ball bearing designed to deliver reliable, high-speed performance in constrained automotive and small machinery spaces. Distinct from standard unsealed miniature bearings, this unit features premium double rubber contact seals (2RS) that form an impermeable barrier against road dust, moisture, and debris, while effectively retaining the internal lubricant. With its precise metric footprint—an 8 mm bore, 23 mm outer diameter, and a customized 14 mm width—the B8-85D-2RS is a critical component for automotive alternators, car generators, and high-efficiency electric motors.

Engineered to withstand the intense thermal environments and sustained high rotational speeds of modern engine bays, the B8-23D-2RS is a specialized deep groove ball bearing designed primarily for automotive electrical systems. Measuring 8x23x14 mm, this component is equipped with double contact rubber seals (2RS) that form an impenetrable barrier against oil vapor, road debris, and moisture. By securely retaining specialized high-temperature grease, this bearing ensures reliable, low-noise operation, making it the industry standard for car alternators, motorcycle dynamos, and compact starter motors.