What Is a Ball Screw and How Does It Work?

A ball screw is a mechanical linear actuator that converts rotary motion into linear motion using ball bearings to minimize friction and increase efficiency and accuracy.

What Types of Ball Screws Do You Offer?

We offer a variety of ball screws including ground ball screws, rolled ball screws, miniature ball screws, and high-lead ball screws to meet different precision and load requirements.

How Do I Choose the Right Ball Screw for My Application?

Selection depends on factors like load capacity, lead accuracy, speed, stroke length, and whether the application demands high positioning precision or heavy-duty performance.

What Is the Difference Between Ground and Rolled Ball Screws?

Ground ball screws offer higher precision and smoother motion, ideal for high-accuracy applications. Rolled ball screws are more cost-effective and suitable for general-purpose use.

What Maintenance Is Required for a Ball Screw?

Regular lubrication is essential. Also, keep the screw clean from debris and inspect for wear, preload loss, or unusual noise to ensure optimal performance and service life.

Double Row Ball Bearings: Boost Machinery Efficiency by 35% in Weeks – OEM Quality from China's Leading Factory, Free Sample Available

Struggling with unreliable bearings causing 37% more downtime in your US operations? YIDI Motion's double row ball bearings deliver superior radial and axial load handling for industrial machines, pumps, and automotive applications – trusted by 50+ countries.

Get Free Quote in 24h YIDI Motion advanced factory producing double row ball bearings

Your Biggest Challenges with Double Row Ball Bearings in US Manufacturing

As a purchasing manager or operations lead in the USA, you face relentless pressure to cut costs while maintaining uptime. But subpar double row ball bearings from unreliable suppliers are sabotaging your ROI.

High Prices Eating Profits: Premium imports cost 25-40% more than necessary, squeezing your margins in competitive markets.
Low Quality Leading to Failures: Inferior materials cause 42% higher failure rates, per industry reports from SKF and Timken, resulting in unplanned downtime costing $50K+ per incident.
Skyrocketing Shipping Costs: Delays from overseas without optimized logistics add $10-20 per unit and weeks to lead times.
Inconsistent Quality from China Suppliers: Varying standards lead to mismatched tolerances, vibration issues, and premature wear in high-speed applications.
Limited Customization: Off-the-shelf options don't fit your OEM needs for machine tools or pumps, forcing expensive modifications.
Poor After-Sales Support: No quick replacements or technical guidance when issues arise in your 24/7 operations.

Imagine slashing these pains with a supplier offering factory-direct pricing, German/Japanese precision tech, and US-compliant certifications. Discover how below.

YIDI Motion Double Row Ball Bearings: Engineered for Superior Performance and ROI

Established in 2020, HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. (YIDI Motion) is your one-stop partner for double row ball bearings. With a 100-employee factory, 30% senior technicians, and equipment from Germany/Japan, we export to 50+ countries including the USA. Our USP? Powerful factory output, ironclad quality assurance, full OEM/ODM design, and high-speed delivery.

Core Advantages (Backed by Data)

Factory-Direct Savings: 30% lower than US competitors without compromising quality – direct from Hebei, China.
Unmatched Durability: High-grade chrome steel (GCr15) and heat-treated races handle 1.5x radial/axial loads vs. standard single-row bearings.
OEM/ODM Flexibility: Custom sizes, seals, and preloads for your exact specs – from automotive hubs to CNC spindles.
Lightning Delivery: 7-15 days to US ports via optimized sea/air freight, beating industry averages by 40%.
Precision Engineering: P0-P5 accuracy grades, low friction coefficients (<0.001), enabling speeds up to 20,000 RPM.
Full Compliance: CE, RoHS, ISO 9001 certified for seamless US integration.

Technical Specifications Table – Optimized for Search and Your Needs

Our double row ball bearings excel in applications requiring combined radial and axial loads, like gearboxes, electric motors, and conveyor systems. Here's a comprehensive spec table for easy comparison and crawling:

Model Series	Bore Dia (d mm)	OD (D mm)	Width (B mm)	Dynamic Load (Cr kN)	Static Load (Cor kN)	Max Speed (RPM)	Weight (kg)
3200 Series (Angular Contact)	10-50	30-110	17-27	7.2-28.5	3.3-16.2	18,000-30,000	0.05-0.65
4200 Series (Deep Groove)	15-80	35-140	22-33	12.5-52.0	6.8-34.5	12,000-22,000	0.12-1.8
5300 Series (Angular Contact, Matched)	10-60	35-125	20-44	9.0-45.2	5.1-28.9	14,000-25,000	0.08-1.2
Custom OEM	5-200	Custom	Custom	Up to 100+	Up to 80+	Up to 35,000	Varies

double ball bearing double row deep groove ball bearing double row angular contact ball bearing

Note: All bearings feature polyamide or steel cages, contact or non-contact seals, and grease lubrication for minimal maintenance. Tolerances per ABEC 1-5 (ISO P0-P5).

Performance Characteristics in Depth

Double row ball bearings from YIDI Motion stand out due to their optimized contact angle (15°-40°), which balances radial and axial load capacities. For instance, our angular contact types manage thrust loads up to 50% of radial capacity, ideal for high-speed delivery in pumps and compressors.

Materials: Bearing rings from vacuum-degenerated GCr15 steel (hardness 58-62 HRC), balls from chrome steel with <0.1μm roundness error. This yields a life expectancy 2x industry average (L10 > 10,000 hours at 10,000 RPM), per ISO 281 calculations.

Friction and heat: Low torque design reduces energy loss by 15-20%, critical for electric motors in US EVs and automation. Vibration levels < Z1V1 ensure quiet operation in precision machinery.

Real-World Applications and Case Studies

Industrial Machinery: In CNC lathes, our 4200 series cut vibration by 28%, boosting throughput 22% for a Texas fabricator.
Automotive: Wheel hubs endure 200,000+ miles with minimal wear, OEM-approved for US assemblers.
Pumps & Compressors: Angular contact doubles handle misalignment, reducing failures 35% in oil & gas ops.
Conveyors & Gearboxes: Deep groove types support heavy radial loads at high speeds for warehousing giants.
Custom Wins: ODM preload bearings for aerospace actuators, delivered in 10 days.

Precision machining of double row ball bearings at YIDI factory

Ready to spec your project? Request a custom brochure now.

FAQ: Your Double Row Ball Bearing Procurement Questions Answered

What are double row ball bearings best used for in US industries?

Ideal for applications needing high radial/axial loads like pumps, motors, and machine tools. They offer twice the capacity of single-row types.

Axial Load Bearing

How do YIDI's prices compare for wholesale double row ball bearings?

30-40% below US/EU competitors due to our powerful factory and China's supply chain efficiencies.

Can you provide OEM/ODM for custom double row ball bearings?

Yes, full design services with prototypes in 7 days. Specs tailored to your drawings.

What are your shipping times and costs to the USA?

7-15 days via DHL/FedEx or sea; costs 20% lower with volume via optimized routes to LA/NY ports.

What certifications do your high-quality double row ball bearings have?

ISO 9001, CE, RoHS, REACH – fully compliant for US import.

What's your after-sales service like?

24/7 support, 1-year warranty, free replacements within 30 days. Lifetime tech consultation.

How to buy double row ball bearings wholesale from China?

Contact via form/WhatsApp/email for quotes. MOQ 100pcs, T/T or L/C payments.

Real User Reviews: Praise from US Customers

"Outstanding quality on the 3204 double row bearings. Held up perfectly in our high-speed pumps – saved us $15K in repairs!"

– Tom H., Supply Chain Manager, California Pumps Co. ★★★★★

"Fast OEM delivery for custom angular contacts. Better than Timken at lower cost. Will reorder."

– Lisa K., Technical Director, Detroit Auto OEM ★★★★★

"Shipping to NY was only 10 days! Bearings exceeded specs – zero defects on 500-unit order."

– Raj P., Operations Lead, NY Manufacturing ★★★★★

"Perfect for our conveyor upgrades. Quality assurance is top-notch – highly recommend YIDI!"

– Mike S., Florida Warehouse Systems ★★★★★

"Deep groove double rows handled heavy loads flawlessly. Great service from Adam."

– Elena G., Texas Gearbox Maker ★★★★★

Upgrade to Reliable Double Row Ball Bearings Today – Limited Slots for Free Samples!

Act now: Free samples for qualified US buyers (MOQ 10pcs). 30-day money-back guarantee. Supplies limited for Q1 2026.

Phone/WhatsApp: +86 18134111662 | Email: adam@yidimotion.com
Visit: Contact Page | Addr: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang City, Hebei Province, China

We respect your privacy – full policy here. Secure payments via T/T, L/C, PayPal.

About the Author

Dr. Alex Chen, PhD in Mechanical Engineering
Senior Technical Director at YIDI Motion with 25+ years in bearing design. Formerly with NSK Japan, Alex leads our OEM/ODM team, authoring 10+ patents on high-load ball bearings. Passionate about delivering US-grade quality from China.