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.

Wholesale Angular Contact Ball Bearings | Premium Quality, OEM/ODM from China's Top Factory – Fast USA Delivery in 7-14 Days

Struggling with high prices, low-quality bearings that fail prematurely, and skyrocketing shipping costs from unreliable suppliers? YIDI Motion delivers wholesale angular contact ball bearings engineered for high-speed precision, direct from our Hebei factory—saving you up to 37% on costs without compromising performance.

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Common Pain Points in Sourcing Angular Contact Ball Bearings
Why Choose YIDI Motion for Wholesale Angular Contact Ball Bearings
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Your Biggest Challenges with Wholesale Angular Contact Ball Bearings

As a purchasing manager or technical director in the USA manufacturing sector, you face relentless pressure to cut costs while maintaining uptime. But sourcing wholesale angular contact ball bearings often leads to frustration.

High Prices Eating into ROI: Competitors charge premiums—up to $15-25 per unit for standard 7205 series—without volume discounts that stick.
Low Quality Causing Downtime: Inferior bearings from unverified suppliers fail under high speeds, leading to 22% higher machine failure rates per industry reports from ABMA (American Bearing Manufacturers Association).
High Shipping Costs & Delays: Overseas orders from non-factory sources add $0.50-1.00 per unit in freight, with 4-6 week waits disrupting your supply chain.
Inconsistent Specs: Mismatched contact angles (15° vs. 40°) cause vibration in spindles, reducing precision by 15-20%.
No Customization: Off-the-shelf options ignore your OEM needs, forcing expensive reworks.
Compliance Headaches: Lack of USA-compliant certs like RoHS or ABEC ratings leads to regulatory rejects.

These issues cost USA firms $1.2 billion annually in bearing-related downtime (per McKinsey industrial report). Ready for a better way? Scroll to our solutions.

YIDI Motion: Your Reliable Wholesale Angular Contact Ball Bearing Supplier

Established in 2020, HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. (YIDI Motion) is a powerhouse factory with 100+ employees, 30% senior technicians, and advanced German/Japanese equipment. We export to 50+ countries, including the USA, offering one-stop linear motion solutions: ball screws, linear guides, and wholesale angular contact ball bearings.

Our USP? Powerful Factory Direct pricing, Quality Assurance with full traceability, OEM/ODM Design, and High-Speed Delivery to USA ports in 7-14 days via optimized logistics.

Core Advantages (3-6 Key Benefits)

Cost Savings: 37% lower than USA distributors—e.g., 7208 bearing at $8.50/unit for 1000+ MOQ.
Superior Durability: Super-finished raceways extend life by 50%, handling 1.5M RPM in spindles.
Customization: Tailored contact angles (15°/25°/40°), hybrid ceramic options for high-speed apps.
Fast USA Delivery: DHL/FedEx for samples, sea freight for bulk—under $0.20/unit shipping.
Full Compliance: ABEC-5/P5 precision, RoHS/REACH for USA markets.
OEM/ODM Expertise: 100+ custom projects yearly, from prototype to production.

Technical Specifications Table

Angular contact ball bearings excel in combined radial-axial loads, with a contact angle optimizing thrust capacity. Here's a comprehensive spec table for our popular series—optimized for machine tools, pumps, and automotive.

Model	Bore (d mm)	OD (D mm)	Width (B mm)	Contact Angle	Dynamic Load (C kN)	Static Load (C0 kN)	Max Speed (RPM)	Precision
7204B	20	47	14	40°	14.1	7.2	18,000	ABEC-5/P5
7205B	25	52	15	40°	17.3	9.5	16,000	ABEC-5/P5
7208B	40	80	18	40°	35.0	23.4	12,000	ABEC-7/P4
7305B (Double Row)	25	62	17	40°	28.5	18.2	14,000	ABEC-5/P5
71912 (High-Speed)	60	85	13	15°	20.4	16.6	24,000	ABEC-7/P4

sealed angular contact ball bearing single row angular contact ball bearing precision angular contact bearing

Materials: Chrome steel GCr15 (or stainless AISI440C), ceramic hybrids available. Seals: Rubber (2RS) or metal shields (ZZ). Lubrication: Grease KLUBER or oil for high-speed. Performance Characteristics: Low friction torque (<0.5 Nm), axial stiffness up to 150 N/µm, vibration level V2. These specs make our bearings ideal for high precision angular contact bearings wholesale needs.