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Introduction to NKMB 627ZZ Miniature Deep Groove Bearing

627ZZ miniature deep groove ball bearing (7x22x7mm) is a compact, high-precision bearing designed for applications requiring smooth rotation, 低騒音, and long service life in limited spaces. Manufactured by NKMB, the 627 series bearings are produced using advanced technology and strict quality control standards, ensuring stable and reliable performance for global customers.

NKMB offers both 627ZZさん (metal shielded) そして 627-2RS(ラトリー) (rubber sealed) versions to meet different operating environment requirements.


Detailed Parameters of 627ZZ / 627-2RS Bearing (NKMB)

Parameter Specification
Bearing Model 627ZZさん / 627-2RS(ラトリー)
Brand NKMB
Bearing Type Miniature Deep Groove Ball Bearing
内径 (身分証明書) 7 ミリメートル
外径 (外径) 22 ミリメートル
7 ミリメートル
Shield / Seal Type ZZさん (Double Metal Shields) / 2RS(ラトリー) (Rubber Seals)
材料 クロム鋼 (GCr15)
Ball Material Hardened Steel Balls
Cage Material Steel Cage
潤滑 Pre-lubricated High-Speed Grease
Precision Grade ABEC-1 / ABEC-3 (Optional)
Radial Clearance C0 (Standard), C3 Optional
Max Speed (脂肪) Approx. 20,000 RPM
Operating Temperature -20°C to +120°C
Noise Level Low Noise
重量 Approx. 9.2 g


Key Features of NKMB 627ZZ / 627-2RS Bearings

1. High Precision & Low Friction

NKMB 627 bearings are precision-ground to ensure accurate dimensions, low vibration, and smooth high-speed rotation, ideal for precision applications.

2. Shielded & Sealed Options

  • 627ZZさん: Double metal shields reduce dust entry while allowing higher rotational speeds

  • 627-2RS(ラトリー): Rubber seals provide superior sealing performance for dusty or humid environments

3. Compact Size with Reliable Load Capacity

Despite its miniature size, the 627 bearing supports moderate radial loads, making it suitable for continuous operation.

4. Long Service Life

Optimized heat treatment and surface finishing give NKMB bearings excellent wear resistance and durability.


Applications of NKMB 627 Miniature Deep Groove Bearings

NKMB 627ZZ / 627-2RS(ラトリー) bearings are widely used in:

  • Miniature electric motors

  • Cooling fans and blowers

  • Robotics and automation systems

  • Office automation equipment

  • 医療機器

  • Fitness equipment

  • Precision instruments and tools


Why Choose NKMB Miniature Bearings?

  • Stable and consistent manufacturing quality

  • Strict inspection and testing standards

  • OEM and customized bearing solutions

  • Competitive factory-direct pricing

  • Trusted NKMB brand in international markets

NKMB focuses on providing high-performance miniature bearing solutions for modern mechanical and electronic applications.


結論

627ZZ – NKMB Miniature Deep Groove Ball Bearing 7x22x7mm offers an excellent balance of precision, 耐久性, and compact design. With detailed technical parameters, low-noise operation, and flexible shield or seal options, it is an ideal choice for a wide range of miniature and high-speed applications.

For reliable miniature deep groove bearings, NKMB is a brand you can trust.