NTN UCF206D1 Four-Bolt Flanged Ball Bearing Unit
NTN UCF206D1 is a high-performance four-bolt square flanged ball bearing unit, integrating a UC206D1 spherical insert bearing and a heavy-duty cast iron F206 housing. The suffix D1 denotes an eccentric locking collar mechanism, which delivers stronger shaft locking force than traditional set screws and suits high-torque, high-speed applications. This unit conforms to JIS and ISO standards, featuring excellent self-aligning performance and contamination resistance.
NTN UCF206D1 is a high-performance four-bolt square flanged ball bearing unit, integrating a UC206D1 spherical insert bearing and a heavy-duty cast iron F206 housing. The suffix D1 denotes an eccentric locking collar mechanism, which delivers stronger shaft locking force than traditional set screws and suits high-torque, high-speed applications. This unit conforms to JIS and ISO standards, featuring excellent self-aligning performance and contamination resistance, ideal for diverse industrial scenarios.
Core Dimensions & Weight
| Parameter | Value |
|---|---|
| Shaft Diameter (d) | 30 mm (1.181 in) |
| Housing Length (A) | 120 mm |
| Housing Width (B) | 120 mm |
| Bolt Circle Diameter (J) | 95 mm |
| Mounting Bolt Size | M8 |
| Overall Height (H) | 112 mm |
| Net Weight | Approximately 1.2 kg (2.65 lbs) |
Technical Performance Ratings
| Parameter | Value |
|---|---|
| Basic Dynamic Load Rating (C) | 22.8 kN (5,126 lbf) |
| Basic Static Load Rating (C₀) | 13.5 kN (3,035 lbf) |
| Locking Mechanism | Eccentric collar locking |
| Seal Type | Double non-contact rubber seals with dust flinger |
| Self-alignment Angle | ±2° |
| Operating Temperature Range | -30°C to +130°C (-22°F to +266°F) |
| Reference Speed | 3,200 r/min |
| Limiting Speed | 6,000 r/min |
Structural Features & Advantages
- Eccentric Collar Locking: Provides uniform clamping force, prevents shaft slippage under heavy torque or frequent start-stop conditions, and ensures stable operation.
- High-Rigidity Housing: Precision-cast HT250 cast iron housing with enhanced vibration damping, resistant to impact and deformation in harsh working environments.
- Superior Sealing System: Double lip seals combined with a dust flinger effectively block dust, debris, and moisture, retaining lubricant and extending bearing service life.
- Self-aligning Capability: Spherical outer diameter of the insert bearing compensates for shaft misalignment caused by installation errors or frame deformation, avoiding additional bearing stress.
- NTN Precision Manufacturing: Precision-ground raceways and high-quality chrome steel balls ensure low noise, smooth rotation, and consistent performance.
Applications
This bearing unit is widely used in equipment requiring reliable and stable shaft support:
- Material handling systems (conveyor belts, elevators)
- Agricultural machinery (planters, harvesters, irrigation equipment)
- Industrial pumps, blowers, and compressors
- Textile, printing, and packaging machinery
- Construction and mining auxiliary equipment
