RNA6910 58x72x40mm Heavy Load Machined Needle Bearing Open Type For Construction Machinery Gearbox Transmission Parts

• RNA6910 is an open double-row solid outer ring needle roller bearing without inner ring, standard dimension 58×72×40 mm. It is precisely manufactured from high-performance GCr15 bearing steel, fitted with stamped steel cage to stably retain two rows of needle rollers.Without independent inner ring, the quenched and precision-ground shaft surface acts directly as the rolling raceway, greatly saving radial installation space and allowing thicker shaft design for enhanced shaft strength. Featuring ultra-high radial load capacity and excellent structural rigidity, this open bearing supports convenient grease refilling and daily maintenance, widely adopted for heavy-duty compact transmission equipment in various industrial fields.

*Send inquiry to get latest factory price and technical datasheet for RNA6910 needle roller bearing.

• No inner ring design: Compact radial layout, allows thicker shaft to enhance shaft strength.
• Double row needle roller arrangement: Extremely high radial load bearing capacity and excellent structural rigidity.
• Integral solid outer ring with double side ribs: Limits needle roller displacement, bears slight bidirectional axial force.
• Open structure: Convenient for lubricant filling and daily maintenance.
• Made of GCr15 steel: High hardness, outstanding wear resistance and long service life.
• Low section height: Ideal choice for equipment with limited radial installation space.

• Hydraulic motors, hydraulic pumps and hydraulic system components
• Gear reducers, gearboxes and transmission assemblies
• Construction machinery, agricultural machinery rotating parts
• Injection molding machine auxiliary moving components
• Heavy textile machinery, packaging equipment
• Automated production line heavy-duty rotary mechanisms

*Contact our technical team to confirm compatibility and bearing assembly suggestions.

• Strict raw material inspection, adopt high grade chrome bearing steel to guarantee hardness and wear resistance.
• Precision grinding process ensures accurate dimension and interchangeability with original equipment.
• Complete stock for MR series inch needle bearings, support sample testing and bulk wholesale.
• Professional technical support for bearing selection and assembly guidance.
• Accept OEM service, laser marking and customized packaging according to customer requirements.

*Place bulk orders for MR series inch needle bearings, enjoy sufficient stock and fast delivery.