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.

Reliable 6302, 6203ZE, 22222, 32314 Bearings – Wholesale OEM from Hebei YIDI

Sourcing precision bearings like 6302 deep groove, sealed 6203ZE, heavy-duty 22222 spherical rollers, 32314 tapers, and specialty LM67000LA or NA22 needle types? We've got stock and custom runs direct from our Shijiazhuang factory. Exports to USA, Europe, Canada – fast quotes, no middlemen.

Quick Inquiry: Need pricing on bearing 6302 or bulk 6203ZE? Email adam@yidimotion.com or call +86 18134111662. Samples ship in 3 days.

Why Procurement Managers Trust Us for 6302 / 6203ZE and Similar Bearings

Running a machine shop in Ohio or distributing parts across Texas? Bearings fail, downtime costs thousands. We've shipped over 500k units yearly since 2020 – models like 6302 for light loads, sealed 6203ZE for dusty environments, up to 22222 for high radial stress.

Take the 6302: 15mm ID, 42mm OD, 13mm wide. Standard deep groove ball, but ours hit ABEC-3 precision from Japanese-imported grinders. No grease leaks after 10,000 hours, unlike cheaper imports that seize early.

Procurement teams hit snags with inconsistent suppliers. One batch P5 tolerance, next P0 slop. Our Hebei YIDI plant runs DIN 620 specs across the board. Export manager here – I've fielded calls from US importers frustrated with lead times ballooning to 12 weeks. We cap at 4-6 for stock, 8-12 custom.

Beyond basics, 22222 spherical rollers handle misalignment in paper mills or crushers. 32314 tapers for truck axles – preload set right, no early cone wear. LM67000LA linear types for actuators, NA22 needles for compact hinges. Mix-match your BOM without minimums eating inventory.

ROI hits quick. A Midwest distributor swapped to our 6203ZE seals, cut warranty claims by half. Not hype – just chrome steel cages, nitrided races holding up in 80C shops.

Procurement Risks You're Likely Facing Right Now

Ever ordered bearing 6302 from Alibaba, got rusted boxes two months late? Happens too often. Specs list "GCr15 steel," arrives soft. Vibration tests fail at 3000 RPM.

Sealed 6203ZE sounds simple – ZZ or 2RS shield. But poor seals let contaminants in, spinning life drops 40%. We've tested returns: silicone rubber degrades fast in ozone-heavy factories.

Larger ones like 22222 or 32314? Freight nightmares. Oversized crates, customs holds on "machinery parts." One client in California waited 90 days post-clearance due to bad packing.

Mismatched tolerances: P6 promised, P10 delivered – shafts bind.
Grease inconsistencies: Lithium vs. polyurea – wrong one cooks at 120F.
MOQ traps: 1000-unit minimums for trials.
Cert fakes: ISO stamps that scan blurry.

Skip these. Request our test report packet – radial clearance charts, noise levels, salt spray results. Ships PDF same day.

Detailed Specs: 6302, 6203ZE, 22222, 32314, LM67000LA, NA22

Here's the lineup. All chrome steel (52100 equiv.), heat-treated to 58-62 HRC. Custom bores or seals? No problem – our CNC lathes handle it.

Model	Type	ID (mm)	OD (mm)	Width (mm)	Load (kN dyn/stat)	Speed (RPM)
6302	Deep Groove Ball	15	42	13	11.2/5.4	19000
6203ZE	Deep Groove, Sealed	17	40	12	9.56/4.6	16000
22222	Spherical Roller	110	200	53	308/425	3800
32314	Tapered Roller	70	150	51	390/580	4500
LM67000LA	Linear Motion	Varies	Custom	N/A	Per Design	High Speed
NA22	Needle Roller	22	34	17	19.8/30.1	14000

bearing 37431a / 37625 6204-2rs bearing hm212049 bearing

Notes: Loads per ISO 281. Speeds grease lubed. 203 often aliases 6203 – confirm your drawing. Tolerances P0-P6 standard.

Pro Tip: For 6203ZE in pumps, spec RS seal over ZZ – better water resistance.

Inside YIDI Motion: 100+ Staff, German/Japanese Gear

Shijiazhuang base since 2020. 30% senior techs – ex-SKF, Timken guys. Imported Okuma grinders, DMG Mori mills. Heat treat in vacuum furnaces, no decarb.

Annual output: 2M+ bearings. Line runs SF6 quenching for 32314 cups – consistent hardness. We've tooled OEM for US forklift makers, Canadian miners.

Certifications: ISO 9001:2015, RoHS compliant.
Testing: On-site dyno for 22222 shock loads, up to 500kN.
OEM/ODM: Rebrand your 6302 with laser etch.

Exports to 50+ countries. Germany loves our NA22 precision; US takes 6203ZE bulk.

Where These Bearings Excel – Application Breakdown

6302: Electric motors, fans. Small, quiet, cheap to stock.

6203ZE sealed: Ag equip, conveyors. Dust-proof in grain silos or wood shops.

6203Rs Bearing

22222: Vibrating screens, crushers. Self-aligns 2 degrees.

32314: Wheel hubs, gearboxes. Handles thrust + radial.

LM67000LA: CNC slides, automation. Low friction linear.

NA22: Gearboxes, appliances. Thin profile saves space.

One Texas driller used 32314 pairs – uptime jumped from 85% to 96%. Alignment key on install.

Logistics to USA: Realistic Timelines & Packing

Stock 6302/6203ZE: Air ship 7-10 days to LAX/JFK. Bulk 22222: Sea 25-35 days Shanghai-LA.

Packing: Foam sleeves, rust inhibitor paper, plywood crates IPPC stamped. 1CBM holds 500x 6302.

Duties? HS 8482.10 – we've handled Section 301 adds. DDP options via freight forwarders.

Warning: Avoid LCL for 32314 – damage risk high. FCL minimum smart.

Feedback from US & Global Buyers

John M., Operations Mgr, Texas Machinery
Ordered 10k 6203ZE last quarter. Seals held in 95F shop – no failures. Lead time beat SKF pricing. Will reorder.

Maria L., Procurement, Ontario Mining
22222 quality matched NSK samples. Customs smooth, docs perfect. Good for heavy vib apps.

Raj P., Supply Chain, Florida
NA22 compact size ideal for OEM actuators. Pricing 30% under local. Fast samples helped qualify.

Mike R., Engineer, Ohio Fan Maker
6302 runs cooler than expected. P5 tolerance spot-on. Container arrived no damage.

Frequently Asked Questions from Importers

Can you match NSK or FAG specs for 32314?: Yes, equivalent materials and processes. Send drawing for validation.
MOQ for 6302 bulk?: 500 pcs stock, 1000 custom. Samples 5-10 pcs free with freight collect.
Lead time to USA?: Stock 1-2 weeks air, production 4-6 weeks.
What grease in 6203ZE?: High-temp lithium NLGI 2, -30C to 150C.
OEM labeling possible?: Full service – logo, part #, barcode.