604 Zz Shielded Deep Groove Ball Bearing for Skateboard & Scooter Wheels

Name: 604 Zz Shielded Deep Groove Ball Bearing for Skateboard & Scooter Wheels
Brand: Xiamen Dreampower Intelligent Technology Co., Ltd.
SKU: 2275292515

Fujian, ChinaXiamen Dreampower Intelligent Technology Co., Ltd.

US$0.50-2.50

10 Pieces

Sample price:US$0.50/piece.Request sample

Product profile

Customization

Available

Seal Type

Zz / Open / 2RS

Bearing Material

Gcr15 High Carbon Chromium Steel

Model NO.

604

Cage Material

Steel (Stamped) or Nylon PA66

Radial Internal Clearance

C3 Standard / Cn / C2

Precision Grade

P0 / P6

Dynamic Load Rating (Cr)

0.8-1.0 kN

Static Load Rating (C0r)

0.28-0.35 kN

Limiting Speed (Grease, Zz)

50,000-60,000 Rpm

Application 1

Skateboard Wheels, Roller/Inline Skate Wheels

Application 2

Electric Scooter Wheels, Fidget Spinners

Application 3

Precision Instruments, Small Hobby Motors

Transport Package

Industrial Packing/Single Box Packing/Carton Box

Specification

4mm*12mm*4mm

Trademark

Welink Bearing

Origin

China

HS Code

84821020

Production Capacity

2000000/Monthly

Key features

Maintenance Free Design: Silent, long-life operation with no need for regular lubrication.

High-Speed, Smooth-Rolling Performance: Engineered for high RPM rotation in skateboard, roller skate, and scooter wheels.

Low Noise Operation: Engineered for whisper-quiet performance in precision devices.

Customized Solutions: OEM/ODM capabilities and tailored size options available.

Lifetime Warranty: Covers all mechanical defects with free parts and labor for the machine's entire life.

Global Technical Support: 24/7 assistance with partnered service centers in key regions.

ISO 9001 Certified: Manufacturing process certified for quality and reliability.

Fast Delivery: Standard models ship within 30 days; customized units in 30-45 days.

Company profile

Xiamen Dreampower Intelligent Technology Co., Ltd.

Fujian, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2010-12-01Nearest Port: Guangzhou, Xiamen, ShanghaiAverage Response Time: ≤5.26hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, DAP, DAT, FAS, CIP, CPT, FCA, Others

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier focused on bearings and power-transmission products. It offers broad customization and ODM services, but does not provide 3D software design, SDKs, or OEM services for popular brands, and reported no new products in the past year. ISO 9001 certification is stated. The supplier claims integrated R&D-production bases, automated equipment, measurement tools, and strict quality control, while finished products are checked by packing staff. Export activity is reported at 90% of sales, with self-operated import/export rights and one year of export experience. However, reported operating revenue, costs, gross profit, and operating profit for the stated periods are zero, and there is no overseas warehouse, overseas showroom, overseas agent or branch, or offline trade-show participation. After-sales capability is not sufficiently documented.

Supplier typeThe supplier is explicitly identified as a professional technical supplier and its business scope includes bearing manufacturing, bearing sales, and high-speed precision heavy-duty bearings. This supports classification as a specialized bearing and industrial power-transmission supplier.

CertificationsThe supplier states that it holds an ISO 9001 supplier management-system certification. The provided information does not include the certificate number, issuing body, or validity period, but it is explicit evidence of certification holding.

After-Sales capabilityThe supplier has no in-stock service capacity, overseas warehouse, overseas showroom, overseas agents or branches, and offers overseas services in zero countries. Service-capability assessment also lacks written procedures or followed records, so the available evidence does not demonstrate a robust after-sales network.

Financial creditThe stated financial records report zero operating revenue, operating costs, gross profit, and operating profit for the listed periods. These figures provide explicit negative evidence regarding reported financial performance and therefore raise a material financial-credibility concern.

Production capacityThe business scope explicitly includes bearing manufacturing, including high-speed precision heavy-duty bearings. The supplier also claims integrated R&D-production bases, automated equipment, precise measuring tools, skilled operators, and strict process quality control, although the provided information does not quantify production capacity.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, flexible customization, and ODM services. This is direct evidence of broad product customization capability, despite the absence of 3D software design services.

Product Q&A

Q:What is the difference between 604 ZZ and 604 2RS bearings for skateboard wheels?

604 ZZ has double metal shields, offering higher speed capability (up to ~60,000 RPM grease-lubricated) with basic dust protection. 604 2RS has double rubber seals, providing better protection against dirt and moisture but at a slightly lower speed limit, ZZ is generally preferred for skateboard and scooter wheels where speed matters most, while 2RS suits dustier outdoor conditions.

Q:How long do 604 skateboard wheel bearings typically last?

With GCr15 chrome steel construction and proper maintenance, 604 ZZ bearings typically last from several months to over a year under regular skateboard or scooter use, depending on riding conditions, load, and exposure to dirt or water. Nylon cage versions can further reduce friction-related wear for extended service life.

Q:Can 604 bearings handle both radial and axial loads in skate wheels?

Yes, deep groove ball bearings like the 604 are designed to handle both radial loads (from body weight) and light axial loads (from turning and side pressure) simultaneously, making them well-suited for skateboard, roller skate, and scooter wheel applications.