Wholesale R4ZZ Inch Bore U Groove Nylon Track Pulleys
| Item No : | R4ZZU / R4ZZ U-Groove Pulley |
| Size (d*D*B) : | 6.35×23.3×7.1mm |
| Material : | Chrome Steel +Nylon PA6 |
| Lead Time : | 10-15 days |
| Weight : | 0.006KG |
| MOQ : | 2000 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
Looking for precision sliding components that strictly comply with imperial measurement standards? Our RMO Brand R4ZZ U-Groove Nylon Pulley (6.35×23.3×7.1mm) is engineered around a standardized 1/4-inch bore, making it the perfect replacement or OEM part for North American machinery and specific imperial designs. Consisting of a high-accuracy R4ZZ miniature bearing enclosed in a durable engineering polymer tire, it delivers frictionless, low-vibration linear motion. Catering to global B2B operations, our flexible supply network allows you to secure highly profitable factory-direct RMO bulk orders or procure specified legacy brands to fulfill your regional hardware contracts.
⚙️Product Features:
- True Imperial Bore Compatibility: Precisely machined to a 6.35mm (1/4″) internal diameter, ensuring perfect shaft seating for machinery utilizing the US/Imperial unit system without requirement for adapter sleeves.
- Specialized Polymer Outer Jackets: Injection molded primarily with durable Nylon PA6, our customization line extends to PA66, low-friction POM, and shock-absorbing PU (Polyurethane) to tackle various operational stresses.
- Custom Track Profile Tooling: While featuring a high-retention U-Groove for standard tracks, we facilitate rapid prototyping for alternative profiles including V, R, H, and Y grooves tailored to specialized imperial rails.
- Engineered Internal Metallurgy: Select the optimum R4ZZ bearing core for your working environment: high-RPM Chrome Steel (GCr15), budget-friendly Carbon Steel, or moisture-resistant Stainless Steel.
- Micro-Vibration Dampening: The synthetic plastic casing effectively isolates the inner metal track from the external sliding rail, neutralizing high-frequency chatter and delivering an ultra-smooth acoustic profile.
⚙️Product Application:
Thanks to its exact 1/4-inch bore and robust plastic tracking surface, the R4ZZ guide roller is critical for:
- Imperial-spec desktop 3D printers, DIY CNC engraving machines, and laser cutter rail gantries.
- North American standard automated sliding windows, customized interior sliding tracks, and office furniture.
- Commercial cash counting machines, ATM transport mechanisms, and automated ticket printers.
- Wire guiding systems, textile spinning machinery, and small-scale bottling conveyor lines.
- Specialized hardware importers aiming to penetrate the USA and Canadian DIY automation parts market.
⚙️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. | R4ZZU / R4ZZ U-Groove Pulley |
| Inner Bearing Model | R4ZZ (Inch Series, Metal Shielded) |
| Size | 6.35×23.3×7.1mm |
| Groove Profile | |
| Bearing Material | |
| Outer Material | Nylon PA6 (Custom PA66, POM, PU Available) |
| Key Advantage | Perfect fit for 1/4″ shafts, smooth track running |
| 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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