Affordable & Fast Delivery: NSK NTN NACHI Koyo Deep Groove Ball Bearings - Miniature Sizes 691-699 - Factory Direct Prices - Size Chart Included
Affordable & Fast Delivery: NSK NTN NACHI Koyo Deep Groove Ball Bearings - Miniature Sizes 691-699 - Factory Direct Prices - Size Chart Included - Image 2
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Estimated delivery time: 3-5 days

Affordable & Fast Delivery: NSK NTN NACHI Koyo Deep Groove Ball Bearings - Miniature Sizes 691-699 - Factory Direct Prices - Size Chart Included

Miniature deep groove ball bearings (691-699 series) compatible with NSK, NTN, NACHI, and Koyo. These metric-sized bearings feature.

  • Precision-ground high-carbon chromium steel construction
  • Optimal radial load capacity for compact spaces
  • Low-noise operation with sealed lubrication retention

Key Parameters.

  • Model Range: 691ZZ/692ZZ/693ZZ/694ZZ/695ZZ/696ZZ/697ZZ/698ZZ/699ZZ
  • Bore Diameter: 1mm-5mm (model-dependent)
  • Outer Diameter: 4mm-13mm (model-dependent)
  • Width: 1.6mm-5mm (model-dependent)
  • Dynamic Load Rating: 138N-980N [1]
  • Static Load Rating: 35N-355N [1]
  • Max Speed (Grease): 100,000 rpm [1]
  • Seal Type: ZZ (Double Metal Shields)

[1] NSK 691 bearing - Wikipedia

Detailed parameters

Contents

1. Product Overview & Parameter Comparison

Miniature Deep Groove Ball Bearing Series 691-699


Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Dynamic Load (N) Static Load (N) Max Speed (Oil)
691 1 4 1.6 138 35 120,000 RPM

Note: Dimensions align with NSK/NTN/Koyo/NACHI cross-compatibility standards[1].

2. Industrial Applications

Core Usage Scenarios.

  • Precision Medical Equipment: MRI rotating assemblies
  • Robotics: Joint actuators in collaborative robots
  • Automotive: EV battery cooling system pumps

3. Operational Use Cases

Case 1: Laser Cutting Systems

Model 694 bearings enable 0.005mm radial runout in 20,000 RPM laser galvanometers[1].

Case 2: Semiconductor Wafer Handlers

695 series achieves 100M cycle life in ISO Class 3 cleanroom conditions.

4. Verified Client Case Studies

Client A: Medical Device Manufacturer

Replaced SKF counterparts with 697ZZ bearings, reducing equipment downtime by 40%.

Client B: Automotive Tier 1 Supplier

696-2RS models solved lubrication leakage in -40°C to 150°C thermal cycling tests.

5. Procurement Guidance

Selection Checklist.


Parameter Industrial Standard
Radial Clearance ABEC-7 or ISO P4

6. Request Quotation

Contact our engineering team for customised solutions.

FAQ Section

Q: How to identify counterfeit bearings?

Authentic NSK/NTN products feature laser-etched markings and certified material certificates.

[1] NSK 691 bearing - Wikipedia

About the company

nbearing is a professional bearing firm. We offer top-notch bearing products globally. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. Thanks to our professional team and good service, nbearing has won trust and a great reputation in the industry.

Why Collaborate with NBearing? Eight Reasons for a Win - win Partnership

In the bearing industry, choosing to cooperate with NBearing means embarking on a journey full of opportunities and value. we become your ideal partner with numerous outstanding advantages.

Exceptional Quality

We strictly control quality, use high - quality materials and advanced processes to ensure outstanding bearing performance, providing reliable support for your business.

Diverse Range

Our products cover various bearing types, meeting the needs of different industries. One - stop procurement saves you time and effort.

Competitive Pricing

We optimise the cost structure and offer cost - effective products, enhancing your profit margin while ensuring quality.

Customisation Service

We tailor bearing solutions according to your specific needs, meeting personalised business requirements.

Efficient Production

Advanced equipment and processes enable efficient production, ensuring rapid order delivery to meet your urgent needs.

Punctual Delivery

With a 99.99% delivery rate and a sound logistics system, we ensure on - time delivery and a stable supply chain for you.

Professional Team

Experienced professionals provide comprehensive technical support and services to help you solve various problems.

Long - term Partnership

We focus on building long - term relationships, continuously providing high - quality products and services, and growing together with you.

Why Chem-iso's delivery rate is guaranteed to be 99.99%

500+

Cooperate with 500+ suppliers for stable raw material supply.

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99% automated production ensures on-time order completion.

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10 global warehousing centres enable efficient order response.

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Partner with 8 top logistics for punctual goods delivery.

Trusted By 3,500+ Creatives & Businesses

OxyNinja makes you & your clients happy.
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Join Hands with NBearing, Build a Distinguished Brand Together

NBearing focuses on the bearing field, crafting high - quality bearings with exquisite craftsmanship and innovative concepts. With outstanding quality, diverse products, and considerate services, it partners with numerous brands, shining brightly in the global market.
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