Drawn cup needle roller bearings BK series

Drawn Cup Needle Roller Bearings

- High Radial Load Capacity in Minimal Space

Overview

Drawn cup needle roller bearings BK series are specialized radial bearings featuring a thin-walled, deep-drawn outer ring with a closed end. These components are manufactured according to DIN 618-1 and ISO 3245 standards. The outer ring is precision-formed from sheet steel, resulting in an extremely low radial section height. The closed-end design serves dual purposes: sealing bearing positions at shaft ends to prevent lubricant leakage and protecting assemblies from external contaminants. This configuration eliminates the need for separate end caps or sealing devices at shaft terminals.

The bearing structure delivers exceptional radial load capacity within minimal envelope dimensions. Your equipment benefits from reduced machining costs and simplified assembly procedures. The interference fit mounting design requires no additional axial location devices, streamlining your installation process.

Technical Structure and Working Principle

Core Components

The BK series construction consists of several key elements working in coordination:

• Outer Ring (Cup): Case-hardened steel outer cup formed from ST14 low carbon steel through deep-drawing process
• Needle Rollers: High-carbon chromium steel rollers manufactured to G2 grade precision standards
• Cage: Steel stamped or PA66 polymer cage maintaining roller spacing and guidance

Working Mechanism

The bearing operates through continuous contact between needle rollers and hardened raceways. The thin-roller design maximizes the number of contact points per unit area. This configuration distributes radial loads effectively across the entire circumference. The closed bottom prevents axial displacement while providing contamination protection.

The hardened raceways (58-64 HRC) resist fatigue under cyclic loading conditions. The cup bottom profile sustains small axial guiding forces when required by your application.

Technical Specifications

Performance Advantages

Space Optimization

The outspread segment tallness rises to needle roller breadth, giving most extreme stack capacity in compelled spaces. Your plan benefits from diminished component weight and disentangled lodging geometry.

Sealing Function

The coordinates closed conclusion disposes of oil spillage at shaft terminals. This highlight diminishes upkeep necessities and ensures inner components from clean and dampness ingress.

Load Distribution

Multiple needle rollers make persistent contact lines along the raceway. This plan conveys spiral loads consistently, amplifying bearing benefit life beneath high-stress conditions.

Installation Efficiency

Interference fit mounting kills extra securing components. Your get together prepare gets to be more effective with decreased portion tally and streamlined establishment procedures.

Primary Applications

Automotive Manual Transmissions

Drawn cup needle roller bearings BK series bolster loafer adapt shafts in gearbox gatherings. The closed conclusion anticipates transmission liquid spillage whereas taking care of tall outspread loads amid equip engagement cycles.

Pneumatic Control Tools

Industrial drills and affect drivers utilize these orientation in drive prepare gatherings. The fixed arrangement secures inner components from clean defilement whereas supporting high-speed turn and vibration loads.

Hydraulic Adapt Pumps

Drive shaft conclusion applications advantage from the BK arrangement plan. The closed container withstands weight beats and avoids water powered liquid elude, rearranging generally pump seal requirements.

Quality Control and Manufacturing

Our fabricating handle joins three-level quality control: crude fabric review, in-process confirmation, and wrapped up item testing. Each generation group experiences approval of 12 center execution pointers counting vibration testing and weariness life verification.

The generation office keeps up capability for heading up to φ5000mm external distance across. Standard items transport inside 48 hours from our stock of over 1,000 bearing sorts. Custom determinations take after measured generation forms with conveyance cycles 30% shorter than industry midpoints.

Technical Support Services

Our engineering team provides comprehensive application support including:

• Working condition analysis and bearing selection guidance
• Custom specification development for non-standard requirements
• Installation and maintenance technical consultation
• Field mapping services for replacement applications

Ordering and Delivery

Standard Lead Time: 7 working days for catalog specifications

Sample Service: Available for application testing and validation

Custom Development: OEM specifications supported with engineering review

Summary

Drawn cup needle roller bearings BK series deliver proven performance in applications requiring high radial load capacity with space constraints and end sealing requirements. The combination of minimal radial height, integrated sealing, and simplified installation makes these components ideal for automotive, industrial machinery, and hydraulic system applications.

Your equipment benefits from reduced complexity, improved reliability, and cost-effective operation through the engineered advantages of the BK series design. Contact our technical team to discuss specific application requirements and optimal bearing selection for your equipment needs.

Contact: auto@lyautobearing.com for technical inquiries and quotations