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.

6203Z Bearing Supplier | Wholesale Deep Groove Ball Bearing 17x40x12mm Factory China | OEM YIDI Motion

Meta Description:

Reliable 6203Z single shield bearings for industrial use. Chrome steel construction, precise tolerances. Export from Hebei factory to USA/EU. Specs, pricing, lead times. OEM/ODM options. Inquire now for samples.

Quick Navigation

1. Why Choose 6203Z Bearings?
2. Common Challenges in Bearing Procurement
3. Key Features of Our 6203Z
4. Detailed Technical Specifications
5. Real-World Applications
6. Installation and Maintenance Tips
7. Logistics from China to Your Door
8. Factory Capabilities at YIDI Motion
9. Certifications and Compliance
10. Buyer Reviews
11. Frequently Asked Questions
12. Next Steps: Get Your Quote

6203Z Bearing: Your Go-To Single Shield Deep Groove Solution

Sourcing reliable bearing 6203Z doesn't have to mean endless supplier hunts or quality gambles. At YIDI Motion, we've supplied thousands to US operations, keeping motors humming and downtime low.

17x40x12mm precision. Factory direct. OEM ready. Ships worldwide.

Why Choose 6203Z Bearings?

Over the years, I've seen procurement teams chase the cheapest option, only to face failures down the line. The 6203Z changes that. It's a standard deep groove ball bearing with a single metal shield on one side—Z designation means non-contact shield for low friction.

This isn't some generic part. Dimensions are tight: inner diameter 17mm, outer 40mm, width 12mm. Chrome steel GCr15 material holds up in motors, pumps, and conveyor setups. We've shipped pallets to Texas machine shops and Midwest distributors without a hitch.

Think about your last bearing headache. Vibration creeping in too soon? Shield popping off during spin-up? 6203Z tackles those. The metal shield keeps contaminants out while letting grease stay put. No over-lubrication mess, either.

In high-volume runs, consistency matters. Our batches pass radial load tests exceeding 4000N dynamic, 2000N static. That's real numbers from our Shijiazhuang line, not brochure fluff. Importers tell us it slots right into stepper motors or fan assemblies—no modifications needed.

Market's flooded with fakes from unverified mills. Spot the difference? Genuine 6203Z has laser-etched markings, smooth raceways, and that signature shield snap. We've had US buyers send back "bargains" that grenaded after 500 hours. Stick with proven exporters like us.

Procurement tip: Always match your speed rating. Ours handle 14000 RPM max, but derate for dusty environments. We've customized seals for automotive lines heading to Detroit—talk about OEM flexibility.

Word from the floor: Our Japanese-imported grinders ensure concentricity under 2 microns. That's why repeat orders from Canada hit 30% yearly. You're not buying a bearing; you're buying uptime.

Short on space? This compact profile fits where larger 6303s can't. We've seen it in CNC spindles and washing machine drums. Reliable under axial loads up to 8kN momentary. Solid choice for OEMs scaling production.

Common Challenges in Bearing Procurement

I've fielded calls from ops managers at 3AM over seized shafts. Root cause? Off-spec tolerances from shady suppliers. With 6203Z, inner ring bore stays true at 17.000-17.018mm. No slop, no premature wear.

Lead times kill schedules. Spot market fluctuates, but our stockpile means 7-15 days to US ports. Avoid the 45-day waits from inland factories.

Quality fakes mimic looks but fail vibration tests. Ours conform to ISO 15:2011 standards. Noise levels under 3dB at 3000RPM. Distributors in Florida swear by it for HVAC installs.

One importer overlooked shield type—open bearings contaminated fast. Z shield extends grease life 2x over unsealed. Practical for semi-enclosed housings.

Risk of counterfeits from unverified Alibaba listings.
Inconsistent heat treatment causing brinelling.
Long ocean freight delays without FOB Qingdao options.
Mismatched ABEC ratings leading to speed failures.
Poor packaging crushing shields in transit.

We've mitigated all that. Triple-layer boxing, silica desiccants. Buyers report zero DOA on 10k-unit orders.

Key Features of Our 6203Z

Non-negotiable: Dynamic load Cr 9.56kN. Static Cor 4.8kN. That's from SKF-equivalent testing. Shielded for light splash zones.

Cage is pressed steel—economical, quiet. Balls are grade 10, hardened to 60-65 HRC. No spalling in extended runs.

Grease: Lithium complex NLGI 2. Temp range -30°C to 120°C. Extendable with re-greasing ports.

Compared to ZZ double-shield? Single Z runs cooler, easier install. Ideal for belt drives where one side accesses grease fittings.

Our edge: Heat-stabilized rings post-annealing. Handles 150°C peaks without softening. Contractors in hot-shop presses love it.

Detailed Technical Specifications

Parameter	Value
Bearing Type	Deep Groove Ball, Single Metal Shield (Z)
Dimensions (d x D x B)	17mm x 40mm x 12mm
Dynamic Load Cr	9.56 kN
Static Load Cor	4.80 kN
Limiting Speed (Grease)	14,000 RPM
Material	GCr15 Chrome Steel
Precision Class	ABEC-1 / P0
Weight	0.067 kg
Operating Temp	-30°C to +120°C

Tolerances per GB/T 307.2-2017. Custom ABEC-3/5 available—M0 tolerance class on request.

Real-World Applications

Electric motors in conveyor belts. We've supplied OEM lines for packaging machines in California. Handles misalignment better than angular contacts in low-precision fits.

Power tools—drills, saws. Vibration damping shines here. One Florida distributor moved 5k units last quarter for tool rebuilds.

Household appliances: Fans, washers. Quiet operation, low starting torque. Ships to Mexico assemblers too.

Auto accessories: Window regulators, seat adjusters. Corrosion-resistant chrome steel for underbody exposure.

Pumps and compressors. Radial loads dominate; axial handled up to 20% dynamic rating.

Installation and Maintenance Tips

Heat the housing to 80°C max. Press-fit inner ring gently—arborgress only. Arbor upsets shields otherwise.

Alignment key. Shaft runout under 0.01mm. Misalign by 0.05°? Expect edge loading.

6202Z Bearing

Grease sparingly at install. Every 2000 hours after, depending on load. Watch for overheating—pull if over 90°C.

6203z bearing 6204z bearing bearing 6200z

Practical warning: In dirty shops, pair with lip seals. Shield alone won't cut fine dust.

We've trained US techs via video—saves callouts. Torque wrenches on locknuts prevent spin-out.

Logistics from China to Your Door

FOB Tianjin/Qingdao. 20' container holds 50k units. LCL for trials—samples in 5 days DHL.

US duties? HS 8482.10.2012, about 2.5%. We've handled customs for Ohio importers.

Lead: Stock 7 days, custom 25 days. Sea to LA 25 days total. Air for urgency.

Packaging: Inner plastic tubes, master cartons on pallets. Shrink-wrapped, corner protected. Zero damage record.

Ready for a shipping plan? Email adam@yidimotion.com with volume.

Factory Capabilities at YIDI Motion

HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. 2020 start, 100 staff. 30% senior techs. German/Japanese CNC grinders, auto-assembly lines.

One-stop linear motion: Ball screws, guides, actuators, splines, bearings. OEM/ODM your prints.

Exports to 50+ countries: Germany, USA, Canada, France, Japan. +86 18134111662. Addr: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China.

Vertical integration cuts costs 15-20% vs brokers. Monthly 6203Z output: 200k pcs.

Certifications and Compliance

ISO 9001:2015 Quality Management
ISO 14001 Environmental
RoHS Compliant—no lead/cadmium
REACH registered
SGS tested materials

Full audits available. EU/US specs met—no tariffs surprises.

Buyer Reviews

John M., Procurement Mgr, Texas Machinery Co.
"Switched to YIDI 6203Z after local prices spiked. Zero failures in 6 months on press motors. Lead time beat expectations. Recommended."

Maria G., Ops Director, Florida HVAC Distributor
"OEM batch for fans. Shields held in humid storage. Pricing 25% under competitors. Samples were spot-on."

David K., Engineer, Canadian Conveyor Firm
"Tested vs NTN—identical performance. Logistics smooth to Toronto. Will OEM next run."

Sarah L., Supply Chain Lead, Midwest Pump Maker
"Handled dusty pumps great. Maintenance intervals doubled. Factory tour convinced us for volume."