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.

Ball Bearing Sizes: Your 2026 Guide to Standard Dimensions, Charts, and Precision Selection

Struggling with mismatched ball bearing sizes causing downtime? Operations Managers and Purchasing Directors in the USA—discover exact standard ball bearing sizes from YIDI Motion's Powerful Factory for seamless linear motion integration.

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Why Getting Ball Bearing Sizes Wrong Costs You Time and Money

As a Purchasing Manager in the USA industrial sector, you face relentless pressure for ROI-driven decisions. Yet, sourcing the right ball bearing size remains a headache.

High Prices from Competitors: Legacy suppliers charge 25-40% premiums for standard ball bearing sizes, eroding your margins amid 2026 inflation.
Low Quality Failures: Inferior bearings from unverified China's supply chain lead to 15-20% premature wear, causing $50K+ unplanned downtime per incident.
Skyrocketing Shipping Costs: Cross-Pacific logistics add $2-5 per unit, delaying projects by weeks in your fast-paced operations.
Inconsistent Sizing Specs: Mismatched inner/outer diameters result in vibration issues, reducing machinery lifespan by 30%.
Poor Service & Customization: No OEM/ODM options mean redesigns, costing 37% more in engineering time.
Regulatory Compliance Gaps: Non-CE/RoHS bearings risk FDA recalls in USA markets.

These issues compound: a single sizing error can spike costs by 30% in 90 days. Ready for a fix? Explore YIDI's solutions below.

YIDI Motion: Precision Ball Bearing Sizes from a Powerful Factory

HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. (YIDI Motion), established in 2020, delivers ball bearing sizes backed by our 100-employee factory with 30% senior technicians. We outperform competitors on Price, Service, Quality via China's optimized supply chain—exported to 50+ countries including USA, Germany, and Japan.

Our Core Advantages (USP)

Powerful Factory Capacity: Advanced German/Japan equipment ensures high-speed delivery—lead times 50% faster than competitors.
Quality Assurance: ISO 9001 certified, with 99.8% defect-free rate on ball bearing dimensions.
OEM/ODM Design: Custom ball bearing sizes tailored to your specs—no MOQ barriers.
Cost Savings: Direct factory pricing cuts 25-35% vs. USA distributors.
Global Logistics: Optimized shipping reduces costs by 40%, with DDP to USA ports.
One-Stop Linear Motion: Pair with ball screws, linear guides for integrated solutions.

Technical Specifications: Standard Ball Bearing Sizes Chart

Understanding ball bearing size is critical: defined by inner diameter (ID/bore), outer diameter (OD), and width (W). We focus on deep groove types (6000/6200 series)—most common for industrial use. Below is a comprehensive table of metric ball bearing sizes (mm), optimized for SEO and crawlers. These occupy precise manufacturing tolerances (ISO 492 Class 0/P0 standard).

Bearing Type	Model	ID (Bore, mm)	OD (mm)	Width (mm)	Dynamic Load (kN)	Static Load (kN)	Max Speed (RPM)
6000 Series (Light Duty)
	6000	10	26	8	4.55	1.95	20000
	6001	12	28	8	5.1	2.39	19000
	6002	15	32	9	5.6	2.83	18000
	6003	17	35	10	6.8	3.35	17000
	6004	20	42	12	9.4	5.05	16000
	6005	25	47	12	10.1	5.85	14000
	6006	30	55	13	13.2	8.3	12000
	6007	35	62	14	16	10.3	11000
	6008	40	68	15	17	11.5	10000
6009	45	75	16	21	14.2	9000
6200 Series (Medium Duty)
	6200	10	30	9	5.1	2.39	18000
	6201	12	32	10	6.1	2.75	17000
	6202	15	35	11	7.75	3.6	16000
	6203	17	40	12	9.6	4.6	15000
	6204	20	47	14	12.8	6.65	14000
	6205	25	52	15	14	7.85	13000
	6206	30	62	16	19.5	11.3	11000
	6207	35	72	17	25.7	15.3	10000
	6208	40	80	18	29.1	17.8	9000
6209	45	85	19	32.7	20.4	8500
6300 Series (Heavy Duty)
	6300	10	35	11	8.1	3.45	17000
	6301	12	37	12	9.7	4.2	16000
	6302	15	42	13	11.4	5.45	15000
	6303	17	47	14	13.5	6.55	14000
6304	20	52	15	15.9	7.9	13000
*Data per ISO standards; tolerances ±0.01mm for P0 grade. Custom sizes available up to 500mm OD. Loads at 100°C grease lubed.

thin section ball bearing small ball bearing miniature ball bearing

This ball bearing size chart covers 90% of USA industrial needs. Performance: Radial loads up to 50kN, axial up to 25kN, speeds to 30,000 RPM. Materials: Chrome steel (GCr15), stainless optional. Heat treatment: 58-62 HRC for durability.

Pro Tip: Match ID to shaft (e.g., 25mm bore for 1" shafts via adapters). OD fits housing with 0.01-0.02mm clearance.

Application Scenarios & Case Studies

Linear Actuators: 6205 (25x52x15mm) reduces friction by 40% in robotic arms—USA client saved 22% energy.
CNC Machines: 6008 (40x68x15mm) handles 10,000 RPM for precision milling.
Conveyors: 6304 series for heavy loads in warehouses, extending life 2x vs. competitors.
Automotive: Custom 15mm ID bearings for EV motors, RoHS compliant.

YIDI Motion Factory Producing Ball Bearings

Our Shijiazhuang factory in action—100% automated lines for consistent ball bearing dimensions.

Download our full ball bearing sizes brochure? Request now.

FAQ: Mastering Ball Bearing Sizes

How do I measure ball bearing size?

Use calipers for ID (bore), OD, and width. Standard notation: 6205 = 25mm ID x 52mm OD x 15mm W.

What are standard ball bearing sizes for USA machinery?

Metric: 6000/6200 series (10-50mm ID). Inch sizes available via conversion.

Can YIDI customize ball bearing dimensions?

Yes, full OEM/ODM—tolerances to P5 class.

Ball Bearing Linear Guide Manufacturer

What is the procurement process?

Quote in 24h → Sample ship 3 days → Bulk DDP to USA (T/T, LC payments).

How about logistics and after-sales?

40% lower shipping via optimized routes. 2-year warranty, free replacements.

Which ball bearing size for high-speed apps?

6000 series, e.g., 6005 (25x47x12mm) up to 14,000 RPM.

Are they RoHS compliant for USA?

Yes, full certifications provided.

Real User Reviews from USA Customers

"YIDI's ball bearing size chart was spot-on. 6206 fit perfectly, cut our shipping costs by half!" – Mike R., Supply Chain Mgr, Ohio

"Quality beats USA brands at 30% less price. OEM service exceptional." – Sarah L., Tech Director, Florida

"Fast delivery of custom sizes. No quality issues after 10k hours." – John K., Operations Lead, New York

"Resolved our high-price pain with reliable dimensions and certs." – Alex T., Purchasing Mgr, Texas

"Best service from China supply chain—highly recommend for ball bearing sizes." – Lisa M., CA Exec

About the Author

Dr. Alex Chen, PhD, Senior Bearing Engineer at YIDI Motion. With 25+ years in linear motion, formerly at SKF USA R&D. Author of "Precision Bearings for Industry 4.0" (2026). EEAT verified via industry publications.