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.

6319 C3 Bearing: Your Go-To for High-Speed, Heavy-Duty Reliability

Sourcing the right 6319 C3 bearing shouldn't mean endless supplier hunts or quality gambles. We've shipped thousands to U.S. operations managers facing pump failures or motor overhauls.

Quick Inquiry? Talk specs and pricing with our engineer today. +86 18134111662

Picture this: your conveyor line in Ohio grinds to a halt mid-shift because the spindle bearing seized under load. Turns out, it was a cheap import with C0 clearance that couldn't handle the heat buildup. Happens more than you'd think in U.S. manufacturing floors pushing 24/7 cycles.

That's where the 6319 C3 steps in. Larger internal clearance fights thermal expansion, keeps things spinning smooth at speeds up to 4300 RPM greased. Not hype—straight from our Hebei lines where we test every batch.

At YIDI Motion, we've dialed in production for these since 2020. Chrome steel GCr15, precision-ground races, cages that don't gall. Exporting to 50+ countries, including steady U.S. routes via Qingdao port. Procurement folks appreciate our no-BS lead times: 15-25 days FOB for stock, OEM tweaks in 4-6 weeks.

Procurement Risks You're Likely Facing with 6319 C3 Bearings

Overlooked clearance? That's the killer. C3 isn't just a spec—it's insurance against preload from shaft growth. We've had U.S. importers return loads because domestic heat cycles turned C2 bearings into scrap.

Another pitfall: fake certifications. Plenty of Alibaba listings flash "ISO" badges that vanish under scrutiny. Or mismatched greases leading to washout in wet environments. Procurement directors tell us they waste weeks verifying.

Undersized dynamic loads—6319 handles 127 kN Cr, but knockoffs cap at 80%.
Poor surface finishes causing early fatigue.
Extended lead times from non-factory sellers—add 30% to your downtime.
Hidden MOQs that balloon small orders.

Short story: skip the middlemen. Direct from our 100-employee Hebei setup means audited quality, flexible runs down to 50 units.

Pro Tip: Always cross-check radial play against DIN 620. C3 typically lands 25-45 microns. Saves headaches later.

Our 6319 C3 Bearing: Built for What Matters

Deep groove, single row. That's the foundation. But we go deeper. Snap-ring grooves optional, but standard polyamide cages for low noise. Grease? Lithium-based NLGI 2, good to 120°C continuous.

What sets us apart? Japanese-imported grinders ensure Ra <0.4 microns on races. Tolerances hit P0 standard, ABEC 1 equivalent. U.S. buyers note our balls are grade G16—smoother roll-out than many Euro brands.

Heavy-duty? Static load Co at 96.5 kN means it laughs at momentary overloads in gearboxes or fans.

We've customized for OEMs: shielded versions (2Z), sealed (2RS) with FKM lips for oil baths. Vibration? V3 max per ISO 15242.

One operations manager from Texas shared how switching cut his rebuild frequency by half. Not magic— just clearance that matches real thermal swings.

Full Technical Specifications

Parameter	Value
Bearing Number	6319 C3
Type	Deep Groove Ball Bearing, Single Row
Bore Diameter (d)	95 mm
Outer Diameter (D)	170 mm
Width (B)	43 mm
Clearance	C3 (Group 3, 25-45 µm radial)
Dynamic Load Cr	127 kN
Static Load C0r	96.5 kN
Limiting Speed (Grease)	4300 rpm
Limiting Speed (Oil)	5000 rpm
Material	GCr15 Chrome Steel
Cage	Stamped Steel or Polyamide
Weight	3.02 kg

6207 c3 bearing 6304 bearing 6313 bearing

Need CAD drawings or load curves? Email us. Matches SKF 6319 C3 or NSK 6319 C3 footprints exactly.

Where 6319 C3 Excels in the Field

Electric motors top the list. That 95mm bore fits NEMA 200+ frames perfectly. Pumps? Centrifugal models in wastewater plants swear by the C3 for axial float.

Conveyors handle the width—43mm shoulders steady belts under shock loads. Gearboxes, too: pairs well with helical gears where misalignment creeps in.

Agricultural machinery: Tractors, harvesters—dust resistance with 2RS seals.
HVAC fans: High RPM without whine.
Woodworking spindles: Vibration damping extends tool life.
Marine winches: Corrosion options available.

Fans of comparison? Versus 6318, bigger OD means 30% more load capacity. Over 6320? Narrower profile for tight housings.

Inside YIDI Motion: 100% Factory Control

Shijiazhuang base, 100 staff. Senior techs 30%+. German grinders, Japanese autoclaves. Full ISO 9001:2015 audit trail.

OEM/ODM? Our wheelhouse. Branded for U.S. distributors, custom logos laser-etched. Min run 100pcs. Exports hit Germany, Canada, Japan—U.S. our fastest grower.

One-stop linear motion: pair with our ball screws for actuator builds.

Gearbox Bearing

Ready for OEM Quote? adam@yidimotion.com

Installation Insights from the Floor

Heat the bearing to 80°C max—induction preferred. Never hammer the ring. Shaft tolerance h6, housing H7 for that C3 play.

Lube light: 30% fill for horizontal shafts. Monitor temp first 50 hours; expect 60-70°C run-in.

Warning: Mismatched fits cause 40% of failures. Use our fit calculator—free download on request.

Shipping to USA: No Surprises

Qingdao to LA/Long Beach: 25-35 days LCL, 18-25 FCL. 20ft holds 4,500pcs packed 10/box. Duties? HS 8482.10, we handle paperwork.

FOB Qingdao standard. Samples? DHL 3-5 days, $50-80 freight.

Pro buyers consolidate with linear guides—saves 15% on ocean rates.

What Procurement Teams Say

John M., Ops Manager, Texas Fabricator
Switched from local supplier. C3 clearance nailed our spindle speeds. Lead time beat quotes by 10 days. Solid.

Maria R., Procurement, California Pump Maker
1,000pcs OEM run. RoHS certs checked out. No brinelling after 6 months. Pricing competitive vs. SKF reps.