NMB Miniature Ball Bearings 606 607 608 609 625 626 627 628 629 635 636 637 638 639 Zz 2RS
| Customization: | Available |
|---|---|
| Contact Angle: | 15° |
| Aligning: | Aligning Bearing |
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Basic Info.
- Model NO.
- 606 607 608 609
- Separated
- Separated
- Rows Number
- Double
- Load Direction
- Radial Bearing
- Material
- Bearing Steel
- Clearance
- C2 C0 C3 C4
- Vibration
- Zv2 Zv3 Zv4
- Precision
- P6 P5 P4 P2
- Cage
- Brass Steel Nylon
- Seal
- Rubber Steel or Open
- Grease
- High Speed
- Transport Package
- Single Box
- Specification
- 6206-2RS
- Trademark
- AABBCC
- Origin
- China
- HS Code
- 8482102000
- Production Capacity
- 500000PCS/Year
Product Description
NMB Bearings: Product Introduction
Precision in Miniature, Engineered for Extreme Environments Since 1951
NMB (MinebeaMitsumi Inc.), established in 1951 as Japan's pioneer in miniature bearings, dominates global markets with over 70 years of innovation in ultra-compact, high-reliability motion solutions. As the world's largest producer of bearings under 22 mm OD (60%+ market share)610, NMB integrates proprietary materials science, fully vertical manufacturing, and automated precision grinding to deliver unmatched performance in space-constrained and harsh-environment applications. Certified to ISO 9001/14001, NMB operates 12 integrated production hubs across Japan, Asia, Europe, and the Americas, serving 150+ countries with 48-hour OEM support and monthly output of 260 million units36.
Core Technologies & Advantages
Micro-Scale Engineering Excellence:
-
Sub-1.5 mm OD Bearings: World's smallest mass-produced bearings for micro-motors and medical devices, achieving P4 tolerance (sub-micron accuracy)610.
-
Vertical Integration: 100% in-house production of rings, cages, seals, and rolling elements ensures zero-supply-chain risk and 200% longer lifespan vs. industry standards13.
Extreme Environment Resilience:
-
Aerospace-Grade Materials: SUS440C stainless steel and PTFE-lined bushings enable lubrication-free operation in aircraft landing gear and engine systems47.
-
C-Lube Solid Lubrication: Porous resin matrices support 5-year maintenance-free operation in semiconductor equipment (-40°C to 250°C)7.
Smart Manufacturing Leadership:
-
J-Fit Interchangeability: Patented housing tolerance (J7/H7/K7) guarantees 100% cross-factory compatibility, reducing micro-vibration by 30%7.
-
QR-Coded Traceability: Laser-etched housings link to real-time maintenance logs for predictive servicing7.
Global Applications:
Aerospace (Landing Gear, Engine Controls), Automotive (ABS/ESC, EGR Systems), Robotics, HDD Spindles, Medical Devices, and Industrial IoT.
NMB Bearing Product Range Table
Comprehensive Solutions for Miniaturization & High-Reliability Demands
| Category | Type | Key Series | Technical Highlights | Primary Applications |
|---|---|---|---|---|
| Micro Ball Bearings | Deep Groove (Open/Shielded) | 60/62/63 Series (e.g., 626ZZ) |
OD 1.5-22 mm, low noise (<20 dB), 50,000+ rpm69 | HDD Spindles, Drone Motors, Dental Tools |
| Aerospace Joints | Rod End Bearings | HR Series (3-Piece) | Cr-Mo steel, 980 N/mm² tensile strength, ±25° misalignment | Aircraft Wing Controls, Landing Gear7 |
| Spherical Plain Bearings | Metal-to-Metal Type | 440C stainless steel, high static loads (e.g., cargo doors)7 | Helicopter Rotors, Engine Mounts | |
| Specialty Lubrication | PTFE-Lined Bushings | - | Self-lubricating, CIP-resistant, 2× lifespan in chemical exposure45 | Aircraft Actuators, Pharma Mixers |
| High-Speed Rollers | Needle Roller Assemblies | RNA/NA Series (e.g., RNA4920) |
Double-row design, shaft-as-raceway, 30% radial space savings58 | Automotive Transmissions, Construction Gear |
| Aircraft-Grade Rollers | Cylindrical Rollers | - | Automatic alignment, low startup torque for flight control systems5 | Aircraft Engines, Flight Surfaces |
| Sealed Solutions | Dust-Proof Spherical | D-Type | Silicone/NBR seals, laser-welded 304 stainless retainers7 | Construction Machinery, Off-Road Vehicles |
| Hybrid Ceramic | EV Motor Bearings | HA-II | Si3N4 balls, 100,000+ rpm, 30% lower energy loss | Electric Vehicle Drivetrains6 |
Innovative Sub-Categories:
-
Fluid Dynamic Bearings: For HDD spindles, eliminating ball-induced vibration10.
-
Split Outer Ring Bearings: Simplified maintenance in conveyor pulleys and mining screens7.
-
Drum Fan Bearings: Low-torque designs for HVAC blowers (40% heat reduction)8.
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