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Most Popular Nncf4860ek P5 High Precision Bearing K W33 High Quality
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.

NNCF 48 Series

Outer Dimension

Multiple Sizes Available

Material

Chrome Steel

Spherical

Non-Aligning Bearings

Load Direction

Primarily Radial Load

Separated

Separated

Transport Package

Stardard

Specification

Stardard

Trademark

Rock

Origin

Luoyang

HS Code

8482500090

Production Capacity

5000 Pieces/Year

Key features

Double-Row Full-Complement Design: Specially designed for extremely heavy radial loads with high rigidity.
Wide Precision Class Range: Available in P2, UP, P4, SP, P5, and P6 precision classes.
Optional K Tapered Bore: Features optional K tapered bore for enhanced adaptability.
W33 Lubrication Groove: Includes W33 lubrication groove and oil holes for reliability.
Premium Chrome Steel Material: Made of premium bearing steel with optimized heat treatment.
Separable Inner Structure: Double-ribbed outer ring allows for convenient installation.
Heavy-Duty Applications: Ideal for gearboxes, rolling mills, mining machinery, and wind power.
Long Service Life: Provides strong wear resistance and stable precision under continuous operation.

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: ≤2.03h

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 precision classes are available for the NNCF48 series?
A:
We supply full-range precision classes including P2, UP, P4, SP, P5, and P6.
Q:Can the bearings be customized with specific lubrication features?
A:
Yes, optional K tapered bore and W33 lubrication groove with oil holes are available.
Q:What are the typical applications for these bearings?
A:
They are widely used in heavy industrial machinery, large gearboxes, rolling mills, mining machinery, and wind power gearboxes.
Q:How should the bearings be installed to avoid damage?
A:
Do not apply force to rolling elements or strike the rings. Use a heater or fixture and tighten screws in a cross pattern.
Q:Are the bearings pre-lubricated upon shipment?
A:
Unless specified otherwise, they are pre-filled with grease. Oil lubrication options are available upon request.

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