6803 Bearing: Precision Thin-Section Solutions for Linear Motion Systems

OEM Deep Groove Ball Bearings | 17mm ID x 26mm OD x 5mm Width | Factory-Direct Wholesale Export

Understanding the 6803 Bearing: A Deep Dive

We've handled thousands of orders for 6803 bearings over the years at YIDI Motion. These are thin-section deep groove ball bearings, part of the 6800 series metric standards. Basic dimensions: 17mm inner diameter, 26mm outer, and just 5mm wide. That slim profile makes them ideal where space is tight but loads can't be ignored.

Picture this: you're engineering a compact linear guide system for automation equipment. Standard bearings might bulk up the assembly, adding unnecessary weight and friction. The 6803 steps in with its low cross-section, maintaining high radial load capacity around 1.7kN dynamic. We've seen them spec'd in everything from spindle motors to precision robotics.

Material-wise, we run GCr15 chrome steel as standard—hardened to 58-62 HRC for durability. Seals? Contact rubber on both sides for most SKF-equivalent models, keeping grease in and contaminants out. Tolerabearing fits? P0 normal class, but we offer P6 upgrades for high-speed runs up to 20,000 RPM.

Not all 6803s are equal. Cheap imports from unverified sources often skimp on heat treatment, leading to early spalling under vibration. Our process involves German-imported grinders for mirror finishes on raceways. That translates to lower noise—vital in medical devices or CNC tooling—and longer intervals between relubes.

Let's talk tolerances. Bore diameter holds at 17mm -0/-9 microns. OD at 26mm 0/-7. Width variation under 4 microns across the batch. These aren't pulled from thin air; they're aligned with ISO 492 standards, which procurement teams in the US demand for compliance audits.

One thing buyers overlook: the internal design. Nine balls at 4.762mm diameter, optimized for that sweet spot between stiffness and speed. We've tested them against NTN and FAG counterparts in house—our 6803 holds up in axial loads too, up to 0.7kN static.

Export manager's note: when shipping to USA, customs flags non-ROHS parts. Ours clear with flying colors, low-lead grease and all. We've cut lead times to 7-10 days for stock 6803s by pre-stocking common variants.

In linear motion setups—like ball screw actuators—these bearings reduce deflection. A client in automotive testing reported 15% less runout after swapping to our thin-sections. Real numbers from real installs, not hype.

Curious about hybrids? We do ceramic ball upgrades for corrosive environments, but that's OEM territory. Start with basics: chat with our engineer via adam@yidimotion.com for custom recs.

This intro alone scratches the surface. Over 800 words in, and we're just warming up on why 6803s dominate compact OEM designs. Keep reading for apps and specs.

Real-World Applications for 6803 Bearings

Operations managers love these for stepper motors in 3D printers. The low inertia keeps steps precise without binding.

In skate hardware? Surprisingly common for high-speed wheels, but B2B? Think semiconductor wafer handlers. Space constraints demand thin profiles; 6803 delivers 25,000 RPM without drama.

• Automation: Linear modules and XY tables.
• Electronics: HDD spindles, fan motors.
• Medical: Pump drives, imaging gantries.
• Robotics: Joint pivots in collaborative arms.
• Textile: High-speed looms for tension control.

Procurement tip: match speed ratings to your RPM. Overspin a budget 6803, and you'll chase brinelling.

Pain Points in Sourcing 6803 Bearings

Sourcing thin-section bearings trips up even seasoned buyers. Lead times stretch to months from big names like SKF during peaks. Prices spike 30% on spot buys.

Quality roulette with Alibaba listings—half arrive with rough races, failing first load test. We've inspected returns: grease migration, seal pops after a week.

Logistics headaches too. Small OD means air freight minimums waste dollars. Importers deal with misdeclared HS codes (8482.10), delaying clearances.

Risk? Batch inconsistencies. One run P0, next borderline P6. Kills repeatability in OEM lines.

YIDI 6803 Advantages Over Standard Suppliers

No fluff. Our 6803s run cooler—5-7°C drop vs generic chrome steel in back-to-back tests. Why? Better ball-to-race conformity from Japanese CNC polishers.

OEM flexibility: engrave your logo, tweak clearances for shrink fits. MOQ as low as 100pcs for trials.

Cost? Factory gate pricing beats distributors by 20-25% on volume. No middleman markup.

6203 bearing 6304 bearing 6208 bearing

6803 Bearing Technical Specifications

Full datasheet? Email us.

Installation and Maintenance Insights

Press-fit carefully—use arbor tool, not hammer. Heat housing to 80°C max for OD slip.

Lube with lithium complex NLGI 2. Relube every 4,000 hours at 10,000 RPM.

Warning: Misalign by 0.5°? Expect edge loading. Always shim shafts true.

• Preload lightly for rigidity.
• Monitor vibration under 0.5 ips.
• Avoid washdown direct on seals.

YIDI Motion Factory Capabilities

Est. 2020, 100 staff, 30% senior techs. German/Japanese gear for grinding, assembly. Export to 50+ countries: USA, Germany, Japan.

OEM/ODM full service. One-stop linear motion: ball screws, guides, splines, bearings.

Address: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China.

Buyer Reviews: Real Procurement Stories

Logistics and Global Shipping

USA bound? Sea to LA/Long Beach: 25-30 days. Air: 5-7 days DHL. FCL 20ft loads 50k+ pcs.

HS 8482.10. Flat rate duties. We handle docs: CO, packing list, insurance optional.

Pro tip: Bundle with linear guides for better cube utilization.

6803 Bearing FAQs

Q: What's the MOQ for OEM 6803?
A: 100pcs trial, 1k+ full run.

Q: Stainless steel version available?
A: Yes, AISI440C. Lead +2 weeks.

Q: Can you match SKF 6803-2RS specs?
A: Exceeds in noise/vibration. Side-by-side data on request.

Q: Lead time to USA?
A: Stock 7 days, custom 3-4 weeks.

Q: Free samples?
A: For qualified buyers—inquire.

Ready to Source Reliable 6803 Bearings?

Reduce risks, cut costs. Talk to our team today.