Wholesale 7x20x8.3mm 687ZZ U Groove Nylon PA6 Coated Pulley Bearings
| Item No : | 687ZZU / 687ZZ U-Groove Pulley |
| Size (d*D*B) : | 7x20x8.3mm |
| Material : | Chrome Steel +Nylon PA6 |
| Lead Time : | 10-15 days |
| Weight : | 0.0045KG |
| MOQ : | 2000 pcs |
⚙️Product Description:
Sourcing highly reliable, low-noise linear guide rollers for tracks or sliding systems? Our RMO Brand 687ZZ U-Groove Nylon PA6 Pulley Wheel (7x20x8.3mm) is an exceptionally versatile hardware component. It features a premium deep groove ball bearing seamlessly overmolded with high-grade, wear-resistant engineering plastic. Designed for smooth rolling and whisper-quiet translation, this roller can be fully customized with diverse bearing steels, outer plastics, and groove styles to match your exact mechanism. As a flexible B2B trade supplier, we offer cost-effective RMO factory-direct wholesale lots or source global tier-1 legacy brands to optimize your supply chain.
⚙️Product Features:
- Flexible Multi-Material Configurations: The core embedded bearing is selectively available in Chrome Steel (GCr15) for heavy loading, Carbon Steel for maximum cost savings, or Stainless Steel for ultimate corrosion resistance.
- Versatile Outer Coating Plastics: Injection molded with high-grade Nylon PA6, we alternatively offer PA66, POM (Polyoxymethylene), and PU (Polyurethane) to fit specific requirements for wear, impact, or dampening.
- Adaptable Multi-Groove Profiling: While configured as a standard U-Groove, our engineering lines support rapid custom tooling for V, R, H, Y, or custom flat tracking profiles to match any rail geometry.
- Super-Quiet & Wear-Resistant Rolling: The premium plastic jacket drastically dampens metal-to-metal impact, delivering a low-friction coefficient, high abrasion resistance, and ultra-quiet 360° operation.
- B2B Trade & Sourcing Elasticity: Expand your market margins with our competitive factory-direct RMO product lines, or request authentic top-tier international brand integration for high-end procurement contracts.
⚙️Product Application:
Precision-engineered to deliver smooth guidance and long service life in linear movement setups, the 687ZZ pulley is widely utilized in:
- Sliding doors, window roller systems, wardrobe cabinet rollers, and shower room door tracks.
- Automated conveyor lines, factory material handling tracks, and packaging machinery guide rollers.
- Precision 3D printers, DIY small CNC routers, linear actuators, and laser engraving components.
- Gym equipment cables, fitness wire rope tracking, and light-duty overhead rigging pulleys.
- Global hardware distributors, B2B sliding track wholesalers, and mechanical equipment assembly OEMs.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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⚙️Obtain Certificate:
About Rimao
Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.
We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!
⚙️Technical Parameters:
| Model No. | 687ZZU / 687ZZ U-Groove Pulley |
| Inner Bearing Model | 687ZZ (Metal Shielded for Dust Protection) |
| Size | 7x20x8.3mm |
| Groove Profile | |
| Bearing Material | |
| Outer Material | Nylon PA6 (Custom PA66, POM, PU Available) |
| Key Advantage | Low Noise, High Wear Resistance, Multipurpose Customization |
| Package | Woven Bags/Cartons |
| Mold Status | Existing Mold Available |
| Brand | RMO/Neutral/OEM/Other Brands |
| Lead Time | |
| Shipping Port | Guangzhou, Ningbo, Shanghai |
| Shipping Method | |
| Payment | 100% T/T, or 30% T/T In Advance, 70% T/T After Finished Production |
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