nachioem logo
NACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery
NACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery [WARN] draft identifier mismatchNACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery [WARN] draft identifier mismatchNACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery [WARN] draft identifier mismatchNACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery [WARN] draft identifier mismatchNACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery [WARN] draft identifier mismatchNACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery [WARN] draft identifier mismatch

Before You Order

Check the clearance, cage and seal suffixes

A NACHI bearing with the right base number but the wrong suffix may not fit or perform in your machine. Send us the full marking from your current bearing and we will match it, or suggest an interchange if the original is no longer available.

  • 01Internal clearance
  • 02Cage type and material
  • 03Seal or shield option

Product Details

About this NACHI bearing

Original Batch Traceability — Every X&S 6004 6008 6012 6202 6204 6207 6210 6212 6214 6216 deep groove ball bearing ships with verifiable factory lot documentation.

Technical Specifications

Parameter Value
Designation 6004 6008 6012 6202 6204 6207 6210 6212 6214 6216
Bearing Type Deep Groove Ball Bearing
Rows Number Single
Load Direction Radial Bearing
Lubrication Grease or Oil
Feature High Speed
Origin Shandong, China
HS Code 8482102000
Suffix No suffix

Application Suitability

Industry Typical Applications
Agricultural Machinery Tractor transmission shafts and harvester pulley drives
Electric Motors Rotor support in high-speed industrial induction motors
Pumps Impeller shaft radial support in centrifugal water pumps
Gearboxes Input and output shaft radial positioning in reduction gears

Premature Seizure in Agricultural Gearboxes

Contaminant ingress through open bearing faces destroys cages long before fatigue limits are reached.

When sourcing replacement parts for desert-region harvesters, I initially specified metal-shielded variants, assuming they would block debris. The fine silica dust in Riyadh and Dubai easily bypassed those non-contact shields, packing into the cage pockets and causing sudden seizure under heavy radial loads. An X&S 6004 6008 6012 6202 6204 6207 6210 6212 6214 6216 deep groove ball bearing without proper contact sealing will suffer the exact same fate under heavy particulate exposure. Maintenance teams often overlook the microscopic nature of agricultural dust, leading to repeated failures that standard open or shielded designs simply cannot prevent in harsh field conditions.

X&S 6004 6008 6012 6202 6204 6207 6210 6212 6214 6216 deep groove ball bearing

Matching Radial Capacity to Agricultural Drivetrains

These single-row radial units handle the continuous rotational loads found in conveyor drives, pump shafts, and tractor transmission systems. Procurement teams often need mixed sizes for seasonal overhauls, and our consolidation service covers the entire X&S 6004 6008 6012 6202 6204 6207 6210 6212 6214 6216 deep groove ball bearing range in one shipment. This eliminates the friction of coordinating multiple suppliers for a single maintenance event. The high-speed capability of these models ensures smooth operation in electric motor applications, while their reliable radial load capacity supports the demanding torque requirements of heavy-duty gearboxes.

Managing Particulate Ingress and Lubrication Breakdown

High-speed electric motors demand low-friction environments to minimize heat generation, while agricultural gearboxes face severe shock loads and abrasive dust infiltration. Without contact seals, fine particulates easily enter the raceway, abrading the grease film and accelerating surface wear. Oil lubrication dissipates heat effectively in high-speed centrifugal pumps, but grease remains the standard for enclosed agricultural units where relubrication is impractical. Selecting the correct external sealing arrangement is far more critical than marginal upgrades in steel purity when operating in sandy environments. Furthermore, elevated ambient temperatures in desert climates can degrade standard grease formulations, necessitating careful consideration of the operating thermal envelope.

Decoding the No-Suffix Baseline Configuration

The absence of a suffix on these models indicates a standard open design with normal internal clearance and pressed steel cages. Open configurations rely entirely on the housing's external sealing mechanisms to retain lubricant and exclude dirt, making them ideal for enclosed gearboxes where the housing itself acts as a primary barrier. The single-row geometry efficiently supports radial loads but offers minimal axial restraint, requiring precise shaft locating designs. For applications requiring higher speed capabilities, the low-friction profile of the open design prevents the heat buildup associated with rubbing contact seals. This baseline configuration provides maximum flexibility for engineers who prefer to specify custom housing seals designed for their specific environmental challenges.

Open type deep groove ball bearing internal structure

The Downtime Penalty of Incorrect Sealing Choices

Specifying an open or metal-shielded bearing for an exposed agricultural pulley inevitably leads to unplanned downtime and lost harvesting revenue. Once abrasive dust contaminates the raceway, the resulting surface distress triggers spalling and catastrophic cage failure. According to ISO 15243 contamination frameworks, this failure mode voids standard warranties and forces emergency replacements during critical operational windows. The secondary costs of halted machinery far exceed the initial savings of choosing an incorrectly sealed component. Furthermore, ISO 281 life calculations assume clean lubrication; introducing severe particulate contamination drastically reduces the theoretical fatigue life, turning a multi-year component into a consumable item.

Sourcing Advantages for Mixed-Model MRO Packages

Mixed-size MRO orders often face high minimums from direct brand channels, but we consolidate single-unit emergency spares alongside full-container project shipments. Our technical team verifies cross-reference equivalencies to ensure dimensional interchangeability when replacing legacy OEM parts across different manufacturers. We maintain massive spot inventory for these standard deep groove profiles, bypassing typical multi-week lead times that disrupt maintenance schedules. Every shipment includes complete traceability documentation, ensuring you receive genuine components rather than unverified market stock. Furthermore, our post-sale engineering support provides failure analysis if a specific application experiences abnormal wear patterns, helping you optimize future selections. Our competitive sourcing costs compared to official channels allow for better budget allocation across your entire maintenance program.

Documentation & Authenticity

  • Certificate of Conformity verifying the specific production batch for these radial units.
  • Dimensional inspection reports confirming bore and outside diameter tolerances before dispatch.
  • Original factory lot traceability documents linked to the manufacturing date code.
  • Material certification validating the bearing steel grade used for the inner and outer rings.

Storage, Handling & Mounting

  • Store the open-type units in original packaging to prevent ambient humidity from corroding the exposed raceways.
  • Use clean lint-free gloves during handling to avoid transferring skin acids to the high-speed polished surfaces.
  • Apply induction heating for inner ring mounting on larger diameters to prevent damage to the pressed steel cage.
  • Ensure external housing seals are intact before installation, as these open bearings lack internal contamination barriers.

Engineering Data Required for Technical Validation

To confirm the optimal selection for your specific machinery, please share the exact radial and axial load profiles alongside operating speeds and ambient temperatures. Providing the OEM equipment model number allows our engineering team to perform precise cross-reference checks and verify dimensional compatibility. Detail the environmental exposure, particularly dust levels and moisture ingress, so we can advise if an alternative sealed variant is necessary for your specific application. Supplying this technical data ensures that the recommended configuration aligns perfectly with your operational demands and prevents premature field failures.

Frequently Asked Questions

Q: What does the lack of a suffix mean for these deep groove ball bearings?
A: The absence of a suffix indicates an open design without integrated seals or shields. This configuration relies on the external housing to retain lubrication and block contaminants. It is typically selected for enclosed gearboxes or electric motors where the surrounding structure provides adequate environmental protection and lower friction is required.

Q: Can I use these open bearings in dusty agricultural environments?
A: Using open variants in highly dusty fields is not recommended unless the housing features exceptional external sealing. Fine silica dust will bypass standard housing gaps, contaminating the grease and causing premature cage seizure. For exposed agricultural pulleys, we strongly advise switching to rubber-sealed alternatives to ensure reliable operation.

Q: How do you handle mixed-size orders for seasonal maintenance?
A: We specialize in consolidating mixed-model MRO packages, allowing you to order various sizes from the 6000 and 6200 series in a single shipment. This flexible approach eliminates the need to coordinate multiple suppliers and ensures all replacement parts arrive simultaneously for your scheduled maintenance windows, regardless of individual quantity requirements.

Q: What documentation is provided to verify authenticity?
A: Every shipment includes a Certificate of Conformity and original factory lot traceability documents linked to the specific production batch. We also provide dimensional inspection reports confirming tolerances. This comprehensive paperwork ensures full transparency and allows your quality assurance team to verify the genuine origin of the components.

Technical Guides

Selection and interchange articles

Practical notes on reading NACHI part numbers, choosing clearance and cage options, and finding replacements for discontinued bearings.

FAQ

Questions about ordering this NACHI bearing

Can you match an old or worn bearing number to the right NACHI model? +

Yes. nachioem provides interchange, cross-reference and selection support for NACHI bearings. Send the original part number or the dimensions of the bearing you are replacing, and we confirm the matching NACHI model, including clearance, cage and seal options, before you order.

Which shipping methods can you use? +

We ship with DHL, FedEx, UPS, air freight and sea freight. In-stock models go out soon after you confirm the order. Choose express for urgent repair parts, or air and sea freight for larger replenishment orders.

How are the bearings packed and labelled? +

Every order is checked, labelled and carefully packed before dispatch. Clear labels let your warehouse identify each model at goods-in and keep stock records accurate.

Request a Quote

Get a price for NACHI Super Precision Deep Groove Ball Bearing 6301 6208 686zz 6200-6206 for Agricultural Machinery

Send model numbers and quantities. nachioem replies online as soon as possible with a quote, and helps with cross-reference or selection where needed.