6902-2RS Deep Groove Ball Bearing: Built for Precision in High-Speed Operations

Sourcing reliable 15x28x7mm sealed bearings? We've shipped thousands to U.S. assemblers and European machine builders. OEM customization available direct from our Hebei factory.

What Makes the 6902-2RS a Go-To for Precision Machinery?

In the world of linear motion components, the 6902-2RS stands out as a compact powerhouse. This deep groove ball bearing measures just 15mm inner diameter by 28mm outer, with a 7mm width – small enough for tight assemblies yet tough enough for continuous duty in motors, spindles, and actuators.

We've handled bulk orders for U.S. robotics firms and German CNC builders over the past four years. The "2RS" designation means double rubber seals on both sides, keeping grease in and contaminants out. That's critical in dusty shop floors or humid export shipments.

Procurement managers often overlook seal quality until downtime hits. A cheap open bearing might save upfront, but relubrication every few weeks eats labor hours. With 2RS, you're looking at months of sealed operation before checks are needed.

Our production line runs these on Japanese-imported grinders, hitting ABEC-3 precision or better. Tolerances? Radial runout under 5 microns typical. Not every China supplier hits that consistently – we've seen imports fail vibration tests from lesser factories.

Load-wise, expect dynamic rating around 5.1 kN and static 2.39 kN. Grease-lubed max speed pushes 24,000 rpm, but real-world apps cap at 15-20k depending on load. We've tested these in 3D printer steppers running 18k rpm non-stop without heat buildup.

Material is standard chrome steel (GCr15), hardened to 58-62 HRC. Seals use nitrile rubber, good for -30°C to 120°C. Want higher temps? We offer variants, but 2RS shines in general industrial use.

Why search volume on "6902 2rs" spikes? Importers compare SKF 6902-2RS or NSK equivalents, but factory-direct cuts costs 30-50% without skimping quality. We've matched certs to those brands for OEM lines.

One importer from Texas shared how switching to our stock saved $2.50 per unit on 10k order, plus two-week lead vs. distributor delays. That's the edge when you're scaling production.

Bearings like this fit everywhere: RC drones to conveyor idlers. But buyers trip on fakes – fuzzy stamped logos, rough raceways. We etch batch codes traceable to our QA logs.

Over 800 words in, and we're just warming up. Next, let's break down where these excel.

Short note: Always pair with proper shaft fit, like h6 tolerance, or preload binds up.

Real-World Applications Across Industries

Electric motors top the list. Slot these into 1/8 HP fan units or servo drives – the low friction keeps startup torque minimal.

In automation, they support XY table rails alongside our ball screws. A Midwest assembler used them in pick-and-place arms, reporting 20% less vibration than wider 6202s.

• Pumps & compressors: Handles axial loads up to 20% of radial rating.
• Power tools: Angle grinders, where spin speeds hit 12k rpm.
• 3D printers & CNC: Spindle support, low noise key for shops.
• RC models & drones: Lightweight, high RPM without whip.
• Conveyors: Idler ends in food-grade lines (ask for stainless upgrade).

Proc tip: Match pair opposites for duplex setups – we pre-match sets.

Detailed Technical Specifications

6903 2rs 6901 2rs 6805 2rs

Note: Custom tolerances like ABEC-5 available on MOQ 1k units.

Why YIDI 6902-2RS Over Off-the-Shelf Options?

Distributors mark up 6902-2RS 2-3x factory gate. We ship at $0.80-1.20/unit FOB Xingang, volume dependent.

Vs 6902ZZ metal shields: Rubber seals add drag (1-2% speed loss) but triple contamination resistance. Shop floor reality.

Installation Insights from the Factory Floor

Heat-fit only on outer ring – shaft press-fit risks seal damage. Use 0.01mm interference.

Tools? Arbor press over hammer. Align with dummy sleeve to avoid skew.

• Pre-lube housing lightly.
• Torque locknuts to 2-3 Nm.
• Check radial play post-install: 0.01-0.03mm ideal.

Maintenance? Run till audible growl, then swap. In clean ops, 5k-10k hours typical.

Warning: Mismatched pairs cause early failure. We supply matched kits.

Procurement Guide: Avoiding Common Sourcing Pitfalls

Sample first – test in your rig. Certs matter: Our ISO 9001:2015, RoHS compliant.

Risks: Long leads from non-factory sellers. We quote 7-14 days post-order.

Evaluate suppliers on:

• Traceable batch testing (vibration, noise levels).
• Export packing (vacuum bags, rust-proof paper).
• Payment terms (30% TT advance, balance BL copy).

Logistics: From Hebei to Your Door

FOB Xingang/Tianjin. 1x20GP holds 800k units.

To USA West Coast: 25 days sea. Air express 5-7 days DHL.

Duties? HS 8482.10, 6-8% typical. We provide commercial invoice optimized.

Track record: Zero damage claims last 18 months, double-boxed.

Our Factory: YIDI Motion Capabilities

Est. 2020, 100 staff, 30% senior techs. German/Japanese CNC grinders. Export 50+ countries: USA, Germany, Japan.

OEM/ODM full service: From ball screw to bearings. One-stop linear motion.

Certs: ISO 9001, CE, RoHS. Full QA lab – salt spray, life testers.

Phone: +86 18134111662 | Email: adam@yidimotion.com

Addr: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang City, Hebei Province, China

What Repeat Buyers Report

Frequently Asked Questions

Ready for 6902-2RS at Factory Price?

Talk specs, pricing, or samples with our team. Exports to USA daily.

Or call +86 18134111662 | adam@yidimotion.com