What is the minimum order quantity?

The minimum order quantity is 1 set.

What payment terms are accepted?

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

What is the lead time for production?

The average lead time is 1-3 months, varying slightly between peak and off-season periods.

Ra Series Ultra-Precision Industrial Bearings Unmatched Durability & Global Tier-1 Quality Assurance

Name: Ra Series Ultra-Precision Industrial Bearings Unmatched Durability & Global Tier-1 Quality Assurance
Brand: Luoyang Rock Precision Engineering Co., Ltd.
SKU: 2140352512

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.

Outer Dimension

Multiple Sizes Available

Material

High Carbon Chromium Bearing Steel

Spherical

Non-Aligning Bearings

Load Direction

Combined Load

Separated

Yes (Outer Ring Is Split Into Two Sections)

Transport Package

Stardard

Specification

Stardard

Trademark

Rock

Origin

Luoyang

HS Code

8482500090

Production Capacity

5000 Pieces/Year

Key features

Compact Lightweight Design: Reduced wall thickness compared to RB type, ideal for robotic arms and lightweight components.

High Load Capacity: Withstands relatively heavy combined loads in minimal space with thin-walled rings.

Split Outer Ring Structure: Outer ring split into two sections fastened with rivets for easy installation and maintenance.

High Precision Material: Manufactured from high carbon chromium bearing steel for unmatched durability.

Global Quality Assurance: Tier-1 quality standards ensuring reliability for industrial and robotic applications.

Flexible Customization: Supports OEM/ODM, customization from samples/designs, and flexible minor adjustments.

Multiple Size Options: Available in various models from RA5008 to RA20013 with different dimensions and weights.

Versatile Application: Suitable for rotary joints in robots, industrial manipulators, and precision 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: ≤1.16h

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.

Product Q&A

Q:What is the main difference between RA and RB type bearings?

The RA type features reduced wall thickness on both inner and outer rings compared to the RB type, making it more compact and lightweight while maintaining high load capacity.

Q:Can the outer ring be separated for installation?

Yes, the RA series has a split outer ring structure consisting of two axial sections fastened together with rivets, allowing for easier installation and maintenance.

Q:What materials are used for these bearings?

They are made from high carbon chromium bearing steel, ensuring high durability and precision for industrial applications.

Q:What are the typical applications for RA series crossed roller bearings?

They are ideal for rotary joint components in robots, robotic arms, and industrial manipulators where lightweight and compact space requirements are critical.

Q:Is customization available for these bearings?

Yes, we offer OEM and ODM services, including customization from samples, designs, full customization, and minor flexible adjustments.