Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of agriculture bearing 204krr8 in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality bearings at competitive price from our factory.
Single Row Deep Groove Ball Bearing 204KRR8 204RR8
Specifications
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Bearing Type: |
Agricultural bearing 204KRR8 |
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Dimensions (dxDxB): |
16.027x45.225x15.4mm, 0.626" * 1.781" * 0.61" | |
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Material: |
GCr15, SAE52100, SUJ2 | |
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Seals: |
Contact seals on both sides, G design or R design | |
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Retainer: |
Steel | |
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Grease: |
Mobile | |
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Radial Internal clearance: |
C3 | |
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Heat Stabilization: |
Temperatures from -20°C up to 120 °C | |
| Speed Limit: | 3000rpm | |
| Replaces: | 204BBE, 204KRR8, 571020, 70571020, 70571020IMP |
Applications
1. No-Till Grain Drills & Precision Planters
It serves double-disc opener assemblies, gauge wheels and depth press wheels of Great Plains, Tye and Crustbuster grain drills, as well as John Deere 7000/7100 row crop planters. The heavy-duty seal blocks wet mud and fine soil particles during continuous seeding in clay or low-lying wet fields, maintaining consistent disc rotation and uniform planting depth for corn, wheat and soybeans.
2. Medium & Heavy-Duty Disc Harrows
Installed on rotating disc spindles of offset and tandem disc harrows for primary tillage. The bearing withstands persistent impact from compacted soil and crop stubble after harvest. Its wide sealing structure avoids premature grease dilution under long-hour ploughing, cutting field maintenance frequency in muddy working seasons.
3. Round & Square Balers
Fitted on pickup reel rollers, bale chamber auxiliary rollers and tension arm rotating shafts of New Holland and Case balers. It resists abrasion from dry straw, chaff and dust generated during hay wrapping. Stable rotation eliminates reel jamming and uneven bale density in peak harvesting periods.
4. Forage & Combine Harvesters
Applied to straw conveyor rollers, header auger support shafts and stubble cutting blade spindles of grain and silage harvesters. The robust seal prevents crop debris and field moisture from invading internal rolling elements, reducing overheating and seizure during non-stop harvest shifts.
5. Rotary Cultivators & Stubble Tillers
Mounted on side cutter shafts and ground profiling wheels of heavy rotary tillers used for post-harvest land preparation. The bearing absorbs strong vibration and radial impact from hard soil clods, delivering steady performance for high-speed shallow stubble incorporation.
6. Fertilizer & Lime Spreaders
Used on broadcast spinner shafts and walking gauge wheels of variable-rate fertilizer spreaders. The corrosion-resistant seal shields internal components from chemical fertilizer dust and damp field conditions, extending service life under all-season spreading task.
Advantages
HXB was founded in 1995, with nearly 30 years of dedicated development, HXB now operates6 subsidiaries.
∗ 2 high-tech R&D centers
∗ 2 modern manufacturing factories - Hangzhou Yijia Precision Bearing Co., Ltd. and Zhejiang Ruiyang Bearing Technology Co., Ltd.
∗ Supported by advanced digital MES and SPC management systems
∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications
∗ High-end equipment and high-quality material
About HXB
1. Hangzhou Factory - YJB
Founded in June 2007, YJB is located in Hangzhou. As a subsidiary of HXB Group, we are a national high-tech enterprise and provincial science & technology enterprise specializing in R&D and manufacturing of high-precision, high-speed, advanced, special and professional bearings.
Core Capabilities & Intelligent Manufacturing
- Product Size: Inner diameter Φ3–Φ300mm
- Precision Classes: P2, P4 (ultra-precision grades)
- Annual Capacity: 3 million sets of precision bearings in a lean & intelligent factory
- Equipment Investment: Over RMB 3 million in world-leading precision testing instruments
- Digital Transformation: with full deployment of MESYS bearing design platform, ERP, MES, WMS, SPC real-time quality monitoring and OA systems, building a benchmark smart manufacturing plant.
Main Products
Precision Spindle Bearings
Angular Contact Ball Bearings
Servo Motor Bearings
Vacuum Pump Bearings
Ball Screw Support Bearings
2. Huzhou Factory
In 2021, the deep groove ball bearing factory relocated from Hangzhou to Huzhou. It operate in a 10,000㎡ production facility with a team of 75 employees, focused on the R&D, and manufacturing of high-performance deep groove ball bearings.
We maintain a professional engineering and quality system to ensure stable precision and reliability.
Engineering Team: 4 bearing design & process engineers, accounting for 5% of staff.
Quality Team: 15 quality personnel, including 2 quality engineers, 20% of staff, covering incoming inspection, in-process control and final testing.
Product Range
Series: 6000–6024, 6200–6214, 6300–6314, 6800–6824, 6900–6924
Features: High rigidity, low noise; suitable for grease lubrication or oil-mist lubrication.
6 Series X4YA-2RS (Double-lip seal) & APT Retainer Series
Features: High & low temperature resistance, superior sealing, high load capacity, long service life.
Application: New energy vehicle transmission systems.
Certificates
Exhibition
FAQ
Q1. What differentiates the 204KRR8 from ordinary agricultural bearings?
The 204KRR8 features upgraded triple-lip sealing and enhanced load capacity, specifically engineered for medium-to-heavy farm machinery. It delivers superior resistance to wet mud, crop residues and fine dust, and withstands continuous impact vibration that standard sealed bearings cannot endure.
2. What types of farm machinery fit the 204KRR8 bearing?
It is widely compatible with heavy-duty agricultural equipment including no-till planters, heavy disc harrows, hay balers, combine harvesters, rotary cultivators and fertilizer spreaders, serving core rotating spindles and ground contact wheel components.
3. What field working conditions is 204KRR8 suitable for?
This model adapts to high-intensity and severely polluted farm environments, including wet clay fields, muddy tillage land, straw-covered farmland and all-weather outdoor operation. It maintains stable performance in long-hour continuous working cycles.
4. Why is 204KRR8 ideal for seeding and tillage equipment?
Its reinforced sealing structure effectively blocks soil intrusion during deep tillage and wet-field seeding. With improved rigidity and impact resistance, it stabilizes disc and gauge wheel rotation, ensuring consistent planting depth and uniform tillage effect.
5. Can 204KRR8 resist crop residue and straw abrasion?
Yes. The optimized multi-lip seal design prevents chaff, straw debris and plant residues from entering the bearing interior. It avoids abrasive wear and grease failure during harvesting and straw returning operations, sustaining long-term operational stability.
6. Does 204KRR8 perform well in continuous high-load operation?
Absolutely. Compared with regular small agricultural bearings, it adopts upgraded internal structure to bear larger radial loads and frequent mechanical impact. It effectively reduces heat accumulation and structural fatigue under non-stop heavy-duty farming tasks.
7. What maintenance requirements does 204KRR8 have?
Factory pre-lubricated and fully sealed, the bearing requires zero refueling maintenance. Regular surface cleaning to remove attached mud and crop debris is sufficient to extend its service life in complex field scenarios.
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