What is the average lead time for production?

The average lead time is one month during the off-season and one to three months during the peak season.

How should the bearings be lubricated?

Bearings are pre-filled with grease upon shipment. If specific grease or oil lubrication is required, please specify in the operating conditions form. Do not mix different brands of grease.

High Performance Nncf4838ek P4 High Precision Bearing K W33 Top Grade

Name: High Performance Nncf4838ek P4 High Precision Bearing K W33 Top Grade
Brand: Luoyang Rock Precision Engineering Co., Ltd.
SKU: 2265567635

Henan, ChinaLuoyang Rock Precision Engineering Co., Ltd.

US$1.00

1 Piece

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Rolling Body

Roller Bearings

The Number of Rows

Single

Model NO.

NNCF 48 Series

Outer Dimension

Multiple Sizes Available

Material

Chrome Steel

Spherical

Non-Aligning Bearings

Load Direction

Primarily Radial Load

Separated

Transport Package

Stardard

Specification

Stardard

Trademark

Rock

Origin

Luoyang

HS Code

8482500090

Production Capacity

5000 Pieces/Year

Key features

Double-Row Full-Complement Design: Specially designed for extremely heavy radial loads with high rigidity and durability.

Multiple Precision Classes: Available in P2, UP, P4, SP, P5, and P6 precision classes for high-precision applications.

Customizable Bore and Lubrication: Optional K tapered bore and W33 lubrication groove with oil holes for enhanced adaptability.

Premium Material and Heat Treatment: Made of premium bearing steel with optimized heat treatment for strong wear resistance.

Separable Inner Structure: Features a double-ribbed outer ring and separable inner structure for convenient installation.

Wide Application Range: Suitable for heavy industrial machinery, gearboxes, mining equipment, and wind power gearboxes.

OEM and ODM Services: Supports full customization from samples, designs, and minor adjustments for specific needs.

Low Noise and Long Life: Provides stable precision, low noise operation, and long service life under continuous working conditions.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityFast DeliveryCustomization from Samples

Luoyang Rock Precision Engineering Co., Ltd.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Qingdao PortAverage Response Time: ≤1.05h

AI-Powered supplier vetting

SummaryLuoyang Rock Precision Engineering Co., Ltd. is a China-based limited company established in 2022 with 19 employees. Its stated product scope includes bearings, machine tools, robots, and port machinery, and its products are reportedly used in construction machinery, mining equipment, CNC machine tools, wind power, robotics, and heavy industry. The supplier reports flexible customization and OEM service for well-known brands, but no SDK availability. Manufacturing resources include one production line and two export-trade staff, with one experienced export employee. Service-control weaknesses are documented: no written procedures or records for supplier-service assessment, corrective and preventive actions, or complaint handling. Finished products are checked by packing staff, and continuous quantity reconciliation is not performed for each batch. Overseas warehouse, showroom, agent/branch, and offline trade-show capabilities are absent. Certification holdings, verified customer cases, and sufficient...

After-Sales capabilityFinished products are checked by packing staff, but the supplier has no written procedures or records for effective service-capability assessment, corrective and preventive actions, or customer-complaint handling. It also has no overseas warehouse, showroom, agent or branch, and has not participated in offline trade shows, indicating limited documented and overseas service infrastructure.

R&D capabilityThe company describes 20 years of continuous innovation and modern precision technology, and its products are used in technically demanding sectors including CNC machine tools, wind power, robotics, and heavy industry. However, it explicitly reports no available SDK, so software-development integration capability is not demonstrated.

Production capacityThe supplier reports one manufacturing production line and one year of export experience, supported by two export-trade staff and one experienced export employee. It does not perform continuous quantity reconciliation for every batch or mass-production run, which is a stated production-control weakness.

Customization capabilityThe supplier explicitly reports customization from samples, designs, full customization, minor customization, and flexible customization. It also states that it provides OEM services for well-known brands, supporting a positive assessment of customization capability.

Product Q&A

Q:What are the main applications of NNCF48 series bearings?

They are widely used in heavy industrial machinery, large gearboxes, rolling mills, mining machinery, paper-making equipment, crushers, heavy motor shafts, wind power gearboxes, and engineering machinery.

Q:What precision classes are available for this bearing series?

We supply full-range precision classes including P2, UP, P4, SP, P5, and P6.

Q:Can the bore and lubrication be customized?

Yes, optional K tapered bore and W33 lubrication groove with oil holes are available to enhance adaptability and reliability.

Q:What is the minimum order quantity?

The minimum order quantity is 1 set.

Q:What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and Small-amount payment.