Full Series Ball Bearings

Product Model	Material	Inner Diameter (mm)	Outer Diameter (mm)	Thickness (mm)	Seal Type	Precision Grade
6205ZZ	GCr15	25	52	15	ZZ	P6
6204ZZ	GCr15	20	47	14	ZZ	P6
6203ZZ	GCr15	17	40	12	ZZ	P6
6004ZZ	GCr15	20	42	12	ZZ	P6
6305ZZ	GCr15	25	62	17	ZZ	P6
6206ZZ	GCr15	30	62	16	ZZ	P6
6304ZZ	GCr15	20	52	15	ZZ	P6
6202ZZ	GCr15	15	35	11	ZZ	P6
6003ZZ	GCr15	17	35	10	ZZ	P6
6201ZZ	GCr15	12	32	10	ZZ	P6
6705ZZ	GCr15	25	32	4	ZZ	P5
6706ZZ	GCr15	30	37	4	ZZ	P5
6805ZZ	GCr15	25	37	7	ZZ	P5
6704ZZ	GCr15	20	27	4	ZZ	P5
6804ZZ	GCr15	20	32	7	ZZ	P5
6905ZZ	GCr15	25	42	9	ZZ	P5
6806ZZ	GCr15	30	42	7	ZZ	P5
6708ZZ	GCr15	40	50	6	ZZ	P5
6703ZZ	GCr15	17	23	4	ZZ	P5
6803ZZ	GCr15	17	26	5	ZZ	P5
6904ZZ	GCr15	20	37	9	ZZ	P5
6802ZZ	GCr15	15	24	5	ZZ	P5
6902ZZ	GCr15	15	28	7	ZZ	P5
6702ZZ	GCr15	15	21	4	ZZ	P5
6801ZZ	GCr15	12	21	5	ZZ	P5
6701ZZ	GCr15	12	18	4	ZZ	P5
6901ZZ	GCr15	12	24	6	ZZ	P5
6700ZZ	GCr15	10	15	4	ZZ	P5
6800ZZ	GCr15	10	19	5	ZZ	P5
6900ZZ	GCr15	10	22	6	ZZ	P5
6200ZZ	GCr15	10	30	9	ZZ	P6
6005ZZ	GCr15	25	47	12	ZZ	P6
6306ZZ	GCr15	30	72	19	ZZ	P6
6903ZZ	GCr15	17	30	7	ZZ	P5
6807ZZ	GCr15	35	47	7	ZZ	P5
6709ZZ	GCr15	45	55	6	ZZ	P5
6006ZZ	GCr15	30	55	13	ZZ	P6
6207ZZ	GCr15	35	72	17	ZZ	P6
6307ZZ	GCr15	35	80	21	ZZ	P6
6808ZZ	GCr15	40	52	7	ZZ	P5
6906ZZ	GCr15	30	47	9	ZZ	P5
6710ZZ	GCr15	50	62	6	ZZ	P5

Manufactured in China’s professional bearing industrial base, our ball bearings are ISO and CE certified. Featuring low friction, high precision and stable performance, they are engineered to meet the diverse demands of industrial machinery, automotive systems and general mechanical equipment.

We offer a complete series of ball bearings, covering mainstream specifications including deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings and thrust ball bearings, for applications ranging from high-speed motors and automotive wheels to conveyor systems and household appliances. Every bearing undergoes strict production processes and comprehensive quality inspections to ensure reliable daily operation.

Our ball bearings deliver exceptional wear resistance and smooth operation. Crafted from premium high-purity GCr15 bearing steel, each unit is processed through high-temperature quenching and low-temperature tempering, achieving a final hardness of HRC60 ± 2. This forms a high-hardness, wear-resistant martensitic structure that directly boosts surface strength and anti-fatigue performance. The precision-ground raceways and spherical rolling elements distribute contact stress evenly, eliminating localized overloading. This design allows the bearing to withstand radial and combined loads with minimal friction, ensuring quiet, smooth rotation even under continuous high-speed operation.

High rotational stability and low noise are ensured through multi-stage precision grinding and superfinishing of every raceway and ball, achieving a surface roughness of Ra ≤ 0.2 μm. The ultra-smooth contact surface eliminates micro-jitter caused by uneven friction, reducing noise and vibration during operation. Internal clearances are precisely controlled during production, effectively reducing thermal expansion-induced preload changes at high speeds. This maintains consistent rotational accuracy, minimizes energy loss and significantly improves the overall operating efficiency of the equipment.

Enhanced durability and extended service life are achieved through multiple design and material optimizations. The optimized raceway geometry prevents edge stress concentration under varying loads, reducing premature wear. High-quality anti-rust and extreme-pressure lubricating grease is used to form a durable protective oil film between contact surfaces. This film effectively reduces metal-to-metal friction while providing robust protection against moisture, dust and corrosive substances, slowing wear and corrosion significantly. Even in harsh environments or continuous operation, the bearing maintains stable performance for extended periods.

Our ball bearings also offer wide temperature adaptability. Constructed with special heat-stabilized bearing steel and high-temperature-resistant lubricants, they maintain consistent performance across a temperature range of -40℃ to 150℃. Low-temperature stabilization treatment ensures minimal dimensional and clearance changes at high temperatures, preventing increased vibration, noise or jamming caused by thermal expansion. This guarantees reliable operation in variable temperature environments, from cold storage equipment to high-temperature industrial machinery.

Widely applied in automotive engines, wheel hubs, gearboxes, electric motors, pumps, compressors, agricultural machinery and industrial automation equipment, they serve as ideal high-cost-performance replacements for original imported bearings. We maintain adequate stock of standard models and support custom sizes and OEM services. Competitive factory-direct pricing, professional technical guidance and reliable after-sales service have earned us recognition from customers worldwide.