Are tapered bore bearings available?

Yes, both single-row and double-row roller bearings are available in cylindrical and tapered bore types.

What is the precision level of these bearings?

Precision versions (P4, P2, SP) are available with tighter tolerances and higher speeds compared to standard versions.

High Precision Nn3008 Double Row Cylindrical Roller Bearing for Machine Tool Spindle

Name: High Precision Nn3008 Double Row Cylindrical Roller Bearing for Machine Tool Spindle
Brand: Luoyang Rock Precision Engineering Co., Ltd.
SKU: 2265085605

Henan, ChinaLuoyang Rock Precision Engineering Co., Ltd.

US$35.00

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.

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

High Precision for Spindles: Designed for CNC lathe and grinding machine spindles requiring high radial stiffness.

Dual Cage Options: Available with PEEK resin cages for high speed or copper alloy cages for high temperature.

Extended Fatigue Life: Improved through high-purity steel, special heat treatment, and cold treatment processes.

Tapered Bore Availability: Facilitates radial internal clearance adjustment and improves rotational accuracy.

High Speed Capability: DmN factors up to 1,820,000 depending on cage type and lubrication method.

OEM and ODM Services: Full customization, minor customization, and flexible customization options available.

Wide Size Range: Multiple sizes available from 30mm to 300mm inner diameter.

Company profile

In-stock CapacityFast DeliveryCustomization from SamplesQuality Assurance

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: ≤0.08h

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 cage materials are available?

We offer PEEK resin cages guided by the outer ring for high-speed applications and copper alloy cages guided by rolling elements for high-temperature applications.

Q:Can the bearings be customized?

Yes, we provide full customization, minor customization, and flexible customization based on samples or designs.

Q:What is the minimum order quantity?

The minimum order quantity is 1 set.

Q:What are the available payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

Q:What is the lead time for production?

The lead time is one month to three months, depending on whether it is peak or off-peak season.