What is the lead time for production?

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

What materials are used for the rings?

The inner and outer rings are made of high-purity bearing steel or high-temperature heat-resistant ZTG42Cr bearing steel.

High Speed Nn3018 Double Row Cylindrical Roller Bearing for Milling Spindle

Name: High Speed Nn3018 Double Row Cylindrical Roller Bearing for Milling Spindle
Brand: Luoyang Rock Precision Engineering Co., Ltd.
SKU: 2151889802

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.

NN 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

High-Speed Performance: Maximum speed factor up to 1,820,000 DmN with PEEK cages for optimal high-speed operation.

Enhanced Fatigue Life: Improved fatigue life through high-purity steel, special heat treatment, and material modification technologies.

Superior Radial Stiffness: Double-row design provides high radial stiffness ideal for machine tool spindles and precision transmission.

Flexible Cage Options: Available with PEEK resin cages or copper alloy cages guided by rolling elements based on application needs.

Tapered Bore Availability: Tapered bore types available to facilitate radial internal clearance adjustment and improve rotational accuracy.

OEM and ODM Services: Full customization, minor customization, and flexible customization options available from samples or designs.

Multiple Size Options: Wide range of sizes available from 30mm to 300mm inner diameter with various load capacities.

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: ≤2.28h

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 lubrication speed limits?

Grease lubrication limits range from 650,000 to 1,560,000 DmN depending on the series and cage type. Oil lubrication limits range from 810,000 to 1,820,000 DmN.

Q:Are tapered bore bearings available?

Yes, both single-row and double-row roller bearings are available in tapered bore types to improve rotational accuracy and radial stiffness.

Q:What is the minimum order quantity?

The minimum order quantity is 1 set.

Q:Do you offer customization services?

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

Q:What are the payment terms?

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