When your equipment demands reliable performance under combined radial and axial loads, Precision Tapered Roller Bearings 31309 delivers the engineering solution you need. Featuring a 45mm inner diameter, 100mm outer diameter, and 25mm width, these bearings excel in automotive hubs, machine tool spindles, and industrial gearboxes where standard bearings fall short. The separable design with tapered geometry ensures optimal load distribution and simplified maintenance procedures. With contact angles ranging from 10° to 30°, the product provides superior axial load capacity while maintaining precise radial positioning for your critical applications.


The bearing consists of four main components working in harmony. The inner ring features a tapered raceway that guides the rollers at the optimal contact angle. The separable outer ring simplifies installation and maintenance procedures. Single-row tapered rollers transfer loads efficiently between the raceways. The cage maintains proper roller spacing and prevents contact between adjacent elements.
The conical geometry ensures all raceway and roller contact points converge on the shaft centerline. This design principle eliminates edge loading and distributes forces uniformly across the contact surface. The tapered configuration transforms combined loads into pure rolling motion, minimizing friction and extending operational life.
The separable design allows independent mounting of cup and cone assemblies. You can adjust internal clearance or apply preload during installation to optimize stiffness. The contact angle geometry provides exceptional axial load capacity compared to radial bearings. Heat treatment of bearing steel components achieves 60-65 HRC hardness for superior wear resistance.
Precision Tapered Roller Bearings 31309 serves critical roles in wheel hubs and differential assemblies. The bearing withstands shock loads from road irregularities while maintaining precise wheel alignment. In transmission applications, it manages thrust forces from helical gears while supporting high rotational speeds.
For positioning-end applications in machine tools, these bearings provide the rigidity needed for accurate cutting operations. The adjustable preload capability allows optimization for different machining conditions. The separable design facilitates spindle maintenance without complete disassembly.
In lessening gearboxes and agrarian apparatus, the heading handle combined loads from adapt coinciding strengths. The tall hub capacity anticipates shaft uprooting beneath changing stack conditions. This keeps up appropriate equip tooth contact and decreases commotion levels.

Our quality control framework envelops three review levels all through generation. Crude fabric confirmation guarantees bearing steel meets chemical composition necessities. In-process review screens dimensional precision and surface wrap up quality. Last assessment incorporates vibration testing and stack capacity verification.
Each bearing experiences 12 center execution tests some time recently shipment. Energetic stack rating confirmation affirms calculated capacity values. Dimensional assessment guarantees compliance with ISO resilience measures. Clamor level testing approves smooth operation characteristics.
The capability rate surpasses 99.9% for dispatched items. This unwavering quality stems from exactness crushing innovation and controlled warm treatment forms. Extraordinary consideration to roller conclusion geometry minimizes stretch concentrations and expands weakness life.
Proper establishment requires cautious dealing with of the distinguishable components. Mount the external ring (glass) in the lodging bore with suitable impedances fit. Introduce the internal ring get together (cone with rollers and cage) on the shaft. Alter pivotal position to accomplish craved inside clearance or preload.
Lubrication prerequisites depend on working conditions and speeds. Oil shower oil suits high-speed applications with great warm scattering. Oil grease works well for direct speeds with constrained upkeep get to. Screen working temperature and vibration levels for early blame detection.
Regular assessment interims ought to adjust with hardware upkeep plans. Check for appropriate oil and defilement levels. Degree bearing clearance or preload to identify wear movement. Supplant orientation when clearance surpasses indicated limits or surface harm appears.

With 30 a long time of bearing industry encounter, we get it the basic necessities of mechanical applications. Our fabricating capabilities cover standard orientation up to φ5000mm external breadth with comprehensive customization alternatives. We keep up stock of over 1,000 bearing sorts for 48-hour conveyance on standard orders.
Our specialized back group gives application designing help and investigating direction. We offer on-site establishment administrations and bearing substitution programs to minimize gear downtime. The coordinates R&D and fabricating approach guarantees steady quality and execution.
For demanding applications requiring Precision Tapered Roller Bearings 31309, our proven track record delivers the reliability you expect. Contact our engineering team at auto@lyautobearing.com to discuss your specific requirements and receive technical recommendations tailored to your equipment needs.
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