Needle Bearings Rnav4908-4912 – High-Load, Precision Roller Bearings
Basic Info
| Inner Diameter | 48 mm |
|---|---|
| Outer Diameter | 62 mm |
| Thickness | 22 mm |
| Type | Needle Roller Bearing, Radial, Closed |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Introduction
RNAV4908 is a compact, high-precision needle roller bearing without inner/outer rings. Designed for radial loads, it features robust bearing steel construction, multiple precision and clearance options (P0–P2, C0–C4), and fast delivery (3–7 days). Ideal for OEM/ODM applications.
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Description
Key Features & Technical Highlights
| Description | Value |
|---|---|
| Ultra-Compact Design | No inner/outer ring — saves radial space, ideal for tight assemblies |
| Precision Grades | P0, P6, P5, P4, P2 — meets aerospace & servo motor tolerances |
| High Load Capacity | Radial-only design with hardened bearing steel (GCr15) rollers |
| Sealed & Ready-to-Use | Closed-type construction — pre-lubricated with grease/oil, zero maintenance start |
| Standardized Dimensions | RNAV4908–RNAV4912 series: 48×62×22 mm (interchangeable per ISO 3580) |
| Global Compliance | HS Code 8482102000 — certified for EU, US, ASEAN import |
| OEM/ODM Support | Custom marking, packaging, and clearance (C0/C3/C4) available |
| Origin & Reliability | Made in China under strict SKF-aligned quality control (1M units/year capacity) |
| Application Range | Automotive transmissions, industrial gearboxes, printing presses, robotics joints |
| Why Choose Us? | SKF-trained technical team + real-time stock data — faster lead time (3–7 days) vs. generic suppliers |
FAQ: Are RNAV49xx bearings compatible with SKF NK/NKS series? Yes — identical dimensions and load ratings. Do they require additional cages? No — closed-type includes integrated cage & seals. What’s the max operating temperature? Up to 120°C with standard grease. Can they handle shock loads? Yes — optimized roller profile and hardened raceway (if mounted on shaft/housing).
Need exact specs, CAD files, or volume pricing? Send your inquiry now — our SKF-certified engineers reply within 2 hours.
