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Ra Precisionglide Series: Low-Noise Crossed Roller Bearings for Medical & Semiconductor Equipment
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.

RA

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 Design: Reduced wall thickness compared to RB type for lightweight and space-saving applications.
Split Outer Ring: Outer ring divided into two sections fastened by rivets for easy assembly.
High Load Capacity: Thin-walled structure capable of withstanding relatively heavy loads in rotary joints.
Multiple Sizes Available: Wide range of dimensions from RA5008 to RA20013 to fit various equipment needs.
OEM Service Available: Full customization, minor customization, and design-based customization services offered.
High Precision Material: Manufactured from high carbon chromium bearing steel for durability and accuracy.
Suitable for Robots: Ideal for robotic arms, wrists, and industrial manipulators requiring compact rotation.
Flexible Customization: Customization options available from samples, designs, or full customization requests.

Company profile

Luoyang Rock Precision Engineering Co., Ltd.
High Repeat Buyers ChoiceIn-stock CapacityFast DeliveryCustomization from Samples
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: ≤1.41h

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 material of the RA series bearings?
A:
The bearings are made from high carbon chromium bearing steel.
Q:How does the RA type differ from the RB type?
A:
The RA type features reduced wall thickness on both inner and outer rings, making it more compact and lightweight than the RB type.
Q:What is the structure of the outer ring?
A:
The outer ring is split into two axial sections (upper and lower) and fastened together using rivets.
Q:Are these bearings suitable for robotic applications?
A:
Yes, they are highly suitable for rotary joint components in robot wrists, arms, and industrial manipulators.
Q:What customization services are available?
A:
We offer full customization, minor customization, customization from samples, and customization from designs.

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