What is the lead time for production?

The lead time is one month during off-peak season and 1-3 months during peak season.

Is the bearing separable?

Yes, the NNU series features a separable structure for easy mounting and maintenance.

What material is used for the rollers?

The bearings are made from high carbon chromium bearing steel (GCr15).

Precision P4 Nnu4948 Double Row Cylindrical Roller Bearing

Name: Precision P4 Nnu4948 Double Row Cylindrical Roller Bearing
Brand: Luoyang Rock Precision Engineering Co., Ltd.
SKU: 2154665802

Henan, ChinaLuoyang Rock Precision Engineering Co., Ltd.

US$1.00

1 Piece

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

Rolling Body

Cylindrical Rollers

The Number of Rows

Double

Model NO.

NNU Series

Outer Dimension

Multiple Sizes Available

Material

High Carbon Chromium Bearing Steel

Spherical

Non-Aligning Bearings

Load Direction

Primarily Radial Load

Separated

Transport Package

Stardard

Specification

Stardard

Trademark

Rock

Origin

Luoyang

HS Code

8431100000

Production Capacity

5000 Pieces/Year

Key features

Double Row Design: Features two rows of cylindrical rollers for superior radial load capacity and rigidity.

High Precision Grades: Available in P4 and P5 precision grades for high-speed and high-accuracy applications.

Non-Aligning Structure: Designed with a non-locating structure to allow free axial displacement and compensate for thermal expansion.

Separable Construction: Separable design enables easy mounting and maintenance of the bearing components.

Premium Material: Manufactured from high carbon chromium steel (GCr15) for durability and long service life.

Tapered Bore Option: Available with tapered bore (K type) to facilitate interference fit installation.

Wide Size Range: Multiple sizes available ranging from small to large bore diameters to suit various needs.

OEM/ODM Services: Offers full customization, minor customization, and flexible customization options based on samples or designs.

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: ≤1.16h

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.