1. Product Introduction

The 6206-RS is a single-row deep groove ball bearing measuring 30 × 62 × 16 mm, fitted on both sides with RS rubber contact seals. It is produced from high-purity GCr15 chrome bearing steel, hardened by controlled quenching and tempering, and finished with precision-ground raceways and matched steel balls to reach P5 (ABEC-5) precision with ZV4 low noise and V4 low vibration running quality. The double-lip rubber seals lock the factory-filled high temperature grease inside the bearing and block water, dust, fine particles and splash ingress, so the bearing keeps rotating smoothly and quietly in damp, dusty and otherwise demanding working conditions without frequent relubrication. As a standard ISO dimension bearing it fits directly into existing housings and shafts, making it a dependable rotating component for medium-speed, medium-load transmission assemblies.

Its combination of sealing integrity, low noise and composite load capacity makes the 6206-RS a preferred choice for hydraulic power units, where it supports the pump drive shaft under continuous rotation, oil mist and vibration.

2. Product Features

• Waterproof and dust-proof sealing: double-sided RS rubber contact seals isolate water, dust and metal particles while holding the lubricating grease in place, preventing leakage, contamination and early wear in damp or dirty workshops.
• Low noise and smooth rotation: precision-ground raceways matched with graded steel balls reduce friction and vibration, keeping running noise at the ZV4 grade for quiet, stable operation.
• P5 precision grade: tight dimensional tolerance and controlled raceway roundness deliver accurate fit, low run-out and consistent performance from piece to piece.
• Composite load capacity: the deep groove raceway carries radial load and moderate bidirectional axial load at the same time, with uniform stress distribution and strong stability under mixed loads.
• Long service life: fully quenched GCr15 bearing steel gives high surface hardness and strong fatigue and wear resistance, extending the replacement cycle of the equipment.
• Maintenance-free operation: pre-greased with high temperature lithium grease at the factory, no relubrication or daily maintenance is required during normal service.
• Universal interchangeability: standard 30 × 62 × 16 mm dimensions allow direct replacement of bearings from other suppliers, simplifying stocking and after-sales service.

3. Product Advantages

Every 6206-RS bearing passes multi-stage inspection on roundness, hardness, noise, vibration and sealing performance before shipment. Precision processing and full inspection give the product stable quality, high batch consistency and strong interchangeability, while the double rubber seal design extends service intervals in humid, oily and dusty environments. Factory-direct supply supports customized precision grades, clearances, grease and neutral packaging, with sufficient stock and short lead times — a reliable sealed bearing solution for global industrial buyers.

4. Product Technical Parameters

5. Product Applications

The 6206-RS sealed deep groove ball bearing is widely used in medium-speed, medium-load rotating machinery such as electric motors, pumps, fans, conveyors, agricultural implements and general industrial equipment. Its most typical application is the hydraulic power unit: the bearing supports the drive shaft of the hydraulic pump inside the oil tank assembly, running continuously under oil mist, pressure pulsation and vibration, while the RS rubber seals keep hydraulic oil in and dust and chips out. The same sealing integrity, low noise and long grease life also suit other oil-lubricated or dust-exposed drive assemblies that require stable long-term operation.

Other typical applications include: electric motor end shields, centrifugal and water pumps, ventilation fans and blowers, belt conveyor rollers, packing and printing machinery, and light agricultural and garden machinery transmission parts.

6. Company Profile

Ningbo Kent Bearing Company was established in 2003 and is one of the leading bearing manufacturers and exporters in China. Kent specializes in the design and production of high precision, high speed and low noise deep groove ball bearings and pillow block bearings. At present, the Corporation has more than 1,000 employees, a fixed assets of 2 billion yuan, and produces 250 million sets of bearings annually. The Corporation's products are widely used in more than 50 countries and regions under 2 independent brands, namely "BUGAO" and "NBKT".

Since 2003, the Corporation has set up a Research & Development Center equipped with multiple laboratories used for precision measurement, mechanical testing, lifespan testing, and physicochemical testing, to continuously upgrade its skills and raise its manufacturing standard and product's precision. Our workshops are installed with a series of advanced numerically-controlled, grinding and assembly equipment that utilize centralized filtration and cooling systems. Together with the production equipment suppliers, we developed these grinding, ultra-precision, fully automated integrated production lines, and own the intellectual property rights. The precision level of the products are at P5 level and above, with noise level reaching Z4, V4 and above. Some of our projects have exceeded the 30% precision reserves. Our products are widely used in electric motors, automobiles, motorcycles, household appliances, textile, electric tools and water pump equipment industries, both locally and globally.

The company has more than 20 assembly lines, and through ISO9001:2015 quality management system certification, has a professional technical and service team, technical personnel proportion of more than 30%. Over the years, we have been adhering to the use of high-end raw material production, from the first to every step, with excellent product development capabilities and strict quality control, we continue to expand the product line and application range.