Are tapered bore options available?

Yes, the bearings are available with a tapered bore (K type) for interference fit.

What is the material used for these bearings?

They are manufactured from high-quality high carbon chromium steel (GCr15).

What is the maximum load capacity?

Dynamic load capacity ranges from 155 kN to 1075 kN depending on the specific model.

Heavy Shock Load Nnu4970 Double Row Mining Bearing

Name: Heavy Shock Load Nnu4970 Double Row Mining Bearing
Brand: Luoyang Rock Precision Engineering Co., Ltd.
SKU: 2158246992

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 load distribution and rigidity.

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

Separable Structure: Allows for easy mounting and maintenance with a non-locating inner ring design.

High Carbon Chromium Steel: Manufactured from GCr15 material for durability under heavy-duty industrial loads.

Tapered Bore Option: Available with K type tapered bore for secure interference fit installation.

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

OEM and ODM Services: Offers full customization, minor customization, and flexible customization options.

Versatile Applications: Ideal for machine tool spindles, wind turbines, mining equipment, and heavy machinery.

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: ≤1.76h

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.