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.

2RS Bearings: Reliable Sealed Deep Groove Solutions for Industrial Applications

Sourcing high-quality 2RS bearings shouldn't mean dealing with seal failures or inconsistent grease retention. At YIDI Motion, we've supplied these double-sealed ball bearings to OEMs across North America for years, handling everything from electric motors to conveyor systems.

Production line of 2RS sealed bearings at YIDI factory

Whether you're a procurement manager in the US looking for bulk wholesale or an engineer needing custom specs, our 2RS bearings deliver on dust protection and smooth rotation without the headaches of open designs.

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Procurement Risks with 2RS Bearings
Our 2RS Bearing Solution
Factory Capabilities & Export Experience
Real-World Applications
Installation & Maintenance Tips
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Common Procurement Risks When Buying 2RS Bearings

I've seen it too many times in my years as an export manager. A purchasing director orders 2RS sealed bearings from a low-cost supplier, only to find the rubber seals cracking after a few months in humid plant conditions. Suddenly, downtime hits, and replacement costs skyrocket.

Or worse, mismatched tolerances lead to vibration issues in high-speed spindles. Bearings that look identical on paper fail prematurely because the grease isn't formulated for your operating temps. Importers often overlook this.

Seal quality inconsistencies: Cheap 2RS bearings use thin rubber that wears fast under contamination.
Grease migration: Low-grade lubricants leak out, causing dry starts and early wear.
Dimension drift: Off-spec inner/outer rings bind during press-fits.
Supply chain delays: Overseas factories without stock mean weeks of waiting for containers.

One US client told me they lost a week's production because their previous supplier's 2RS bearings couldn't handle 80°C environments. We switched them over, and issues vanished. Procurement teams need suppliers who get these realities.

Skip the risks. Request our spec sheet to compare.

How Our 2RS Bearings Solve These Problems

Our double rubber sealed (2RS) deep groove ball bearings start with premium chrome steel rings, precision-ground to ABEC-3 tolerances. The seals? Nitrile rubber compounds that flex without cracking, even in dusty workshops or outdoor gear.

Grease is key. We pack them with high-temp lithium complex, stable from -30°C to 120°C. No purging during initial runs. Balls are grade 100Cr6, hardened just right for load distribution.

Close-up of 2RS bearing seals and grease

Compared to basic 2RS from generic listings, ours hold up in real ops. Take a typical 6205-2RS: dynamic load 14kN, speed up to 14,000 rpm greased. But it's the low friction that buyers notice—smoother startups mean less motor strain.

We've customized for OEMs too. Thicker shields for ag equipment, or food-grade seals meeting USDA guidelines. No minimums that scare off mid-size importers.

Buyer note: Always check radial clearance (C3 common for shafts with expansion). Our catalog flags this.

These aren't off-the-shelf fillers. They're built for procurement pros who hate surprises. See full specs below.

YIDI Motion Factory: Built for Global Supply

HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD., doing business as YIDI Motion, kicked off in 2020 with a focus on linear motion and bearings. Our Shijiazhuang facility runs 100 staff, over 30% senior techs. German and Japanese grinders ensure rings hit micron tolerances.

We export to 50+ countries—USA, Canada, Germany top the list. Containers leave weekly for East Coast ports. OEM/ODM? Full service. Send your drawing, we prototype in 7 days.

100,000 sqm production space
Imported heat treatment lines
In-house seal molding
Automated grease filling

Contact: +86 18134111662 | adam@yidimotion.com | 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China

We've powered US conveyor makers and pump assemblers. Reliability first.

Where 2RS Bearings Shine in US Operations

Electric motors in HVAC units. Conveyor rollers in warehouses. Fans, pumps, gearboxes—anywhere contamination is a threat but space is tight.

In ag, our 6305-2RS handles harvester vibrations. Automotive aftermarket loves the 6204-2RS for wheel hubs. Contractors report 20-30% longer life vs. single-sealed.