GN203KRRB Heavy-Duty Agricultural Bearing 17mm Bore Triple-Lip Seal Greaseable for Planting Equipment

The GN203KRRB-HD heavy-duty agricultural bearing is built for planting and seeding equipment in challenging field conditions. Upgraded from the GN203KRRB platform, this variant features a triple-lip NBR sealing system, an integrated M6 grease fitting, and a corrosion-resistant outer ring coating. The 17mm bore with extended inner ring provides reliable support in planters, fertilizer applicators, and spray equipment exposed to aggressive dust and agricultural chemicals. Each unit is manufactured under ISO 9001:2015 with 100% seal verification before shipment. Contact GQZ today for a sample unit and discover the difference triple-lip sealing makes in your planting equipment.

• Triple-Lip NBR Sealing System: Advanced three-stage seal with an outer dust lip for coarse particle deflection, a primary contact lip for fine contaminant exclusion, and an inner grease retention lip. Dust chamber validated, delivering 3x standard seal life in granular fertilizer environments.
• Integrated Grease Fitting: Standard M6 grease fitting enables in-field relubrication without bearing removal, supporting daily maintenance routines during peak planting and harvest seasons.
• Corrosion-Resistant Outer Ring Coating: The spherical outer ring receives protective treatment resisting rust and chemical attack, valuable for equipment in humid climates and treated fields.
• Extended Inner Ring with Dual Set Screws: Symmetrically extended inner ring improves load distribution. Two hardened set screws resist loosening under high-frequency vibration from planting mechanisms.
• High-Temperature Grease Fill: Pre-packed with premium lithium complex NLGI 2 grease rated for -30°C to +150°C, ensuring effective lubrication from cold startup to sustained high-temperature operation under heavy loads.

Upgrade your planter bearings before the season starts — inquire now for GQZ bulk pricing and express delivery options.

• Row crop planters, precision seeders, and air seeders
• Fertilizer applicators and side-dress bars
• Strip-till and minimum tillage implements
• Chemical sprayer booms and pesticide equipment
• Cultivators and inter-row weeders
• Grain drills and no-till seeding equipment
• Sugar beet and vegetable transplanters

• ISO 9001:2015 Certified: Manufacturing audited annually covering material sourcing, heat treatment, and 100% inspection with batch dimensional reports.
• Field-Proven Design: Developed through multi-season field trials addressing common bearing failure modes in planting applications.
• Factory-Direct Value: In-house manufacturing eliminates supply chain markups for competitive OEM and aftermarket pricing.
• Reliable Seasonal Supply: 100,000-piece monthly capacity with pre-season planning ensures peak-season global availability.
• Engineering Support: Application engineers provide selection guidance, relubrication scheduling, and failure analysis to maximize uptime.

Protect your planting season from bearing downtime — reach out to GQZ now for OEM quotes and reliable seasonal supply planning.

Q1: How does the triple-lip seal protect against granular fertilizer exposure?

Granular fertilizers create an abrasive environment that destroys standard seals within a single season. The triple-lip design deflects coarse granules, excludes fine dust, and retains grease. This staged approach prevents the progressive seal damage and lubricant contamination that cause premature bearing failure in fertilizer application equipment.

Q2: What is the recommended in-field lubrication schedule?

For planting and fertilizer equipment, relubricate daily during peak season via the M6 grease fitting. Apply 2-3 pumps of NLGI 2 grease until fresh grease purges from the seal lips. Reduce to every 50 hours for less abrasive conditions such as grain drills.

Q3: Is the corrosion coating compatible with liquid fertilizers and herbicides?

The coating protects against common agricultural chemicals including UAN solutions, glyphosate, and blended NPK fertilizers. For anhydrous ammonia or prolonged chemical immersion, contact our engineering team for material recommendations.

Q4: What is the warranty coverage and minimum order quantity?

Standard MOQ is 20 pieces with volume discounts for OEM annual contracts. GQZ provides a 12-month warranty against manufacturing defects under normal agricultural use. Claims are processed within 5 working days. Contact our sales team for OEM pricing and supply agreements.