6700 Series Deep Groove Ball Bearings
BMT Bearings 6700 Series Deep Groove Ball Bearings are thin-section precision components produced in our ISO9001 and IATF16949 certified factory. We use GCr15 bearing steel, automatic grinding and assembly lines, and full inspection for noise, vibration, and dimensional accuracy. Designed for compact equipment such as electric motors, pumps, and appliances, supporting stable high-speed rotation and radial load. We support OEM customization, bulk supply, and export cooperation based on real production capability and industrial application experience.
we manufacture the 6700 Series Deep Groove Ball Bearings with a focus on real operating performance rather than theoretical specifications. This series is designed for compact machinery where space is limited but rotational stability is critical.
In our production process, every bearing goes through controlled machining steps including precision turning, heat treatment, grinding, and automatic assembly. We monitor each batch using vibration testing equipment, noise detection systems, and dimensional gauges to ensure consistency before shipment.
We do not rely on sampling checks only. Every production batch is inspected according to internal quality standards aligned with ISO and automotive-grade requirements.
Technical Specifications
● 6700 Series Deep Groove Ball Bearings - Technical Specifications
● (Ultra-Thin Section, Single Row, Open/Shielded/Sealed)
| Bearing Model | Dimensions (mm) | Basic Load Ratings | Limiting Speed | Weight | ||||
| d | D | B | Cr (kN) | Cor (kN) | Grease | Oil | (kg) | |
| 6700 | 10 | 15 | 2 | 0.68 | 0.28 | 50, 000 | 70, 000 | 0.0008 |
| 6701 | 12 | 18 | 2.5 | 0.88 | 0.38 | 45, 000 | 63, 000 | 0.0012 |
| 6702 | 15 | 21 | 2.5 | 0.95 | 0.42 | 40, 000 | 56, 000 | 0.0015 |
| 6703 | 17 | 23 | 2.5 | 1.02 | 0.48 | 38, 000 | 53, 000 | 0.0018 |
| 6704 | 20 | 27 | 3 | 1.35 | 0.65 | 34, 000 | 48, 000 | 0.0028 |
| 6705 | 25 | 32 | 3 | 1.52 | 0.78 | 30, 000 | 42, 000 | 0.0035 |
| 6706 | 30 | 37 | 3.5 | 1.85 | 1.02 | 26, 000 | 36, 000 | 0.0052 |
| 6707 | 35 | 44 | 4 | 2.45 | 1.42 | 22, 000 | 32, 000 | 0.0085 |
| 6708 | 40 | 47 | 4 | 2.65 | 1.58 | 20, 000 | 28, 000 | 0.0092 |
| 6709 | 45 | 52 | 4 | 2.85 | 1.75 | 18, 000 | 25, 000 | 0.0105 |
| 6710 | 50 | 58 | 4.5 | 3.25 | 2.08 | 16, 000 | 22, 000 | 0.014 |
| 6711 | 55 | 64 | 5 | 4.05 | 2.65 | 14, 000 | 20, 000 | 0.019 |
| 6712 | 60 | 70 | 5 | 4.35 | 2.95 | 13, 000 | 18, 000 | 0.0225 |
| 6713 | 65 | 75 | 5 | 4.65 | 3.25 | 12, 000 | 17, 000 | 0.025 |
| 6714 | 70 | 80 | 5 | 4.95 | 3.55 | 11, 000 | 16, 000 | 0.028 |
| 6715 | 75 | 85 | 5 | 5.25 | 3.85 | 10, 000 | 15, 000 | 0.031 |
| 6716 | 80 | 90 | 5 | 5.55 | 4.15 | 9, 500 | 14, 000 | 0.034 |
| 6717 | 85 | 95 | 5 | 5.85 | 4.45 | 9, 000 | 13, 000 | 0.037 |
| 6718 | 90 | 100 | 5 | 6.15 | 4.75 | 8, 500 | 12, 000 | 0.04 |
| 6719 | 95 | 105 | 5 | 6.45 | 5.05 | 8, 000 | 11, 000 | 0.043 |
| 6720 | 100 | 110 | 5 | 6.75 | 5.35 | 7, 500 | 10, 000 | 0.046 |
| 6721 | 105 | 115 | 5 | 7.05 | 5.65 | 7, 000 | 9, 500 | 0.049 |
| 6722 | 110 | 120 | 5 | 7.35 | 5.95 | 6, 700 | 9, 000 | 0.052 |
| 6724 | 120 | 130 | 5 | 7.95 | 6.55 | 6, 300 | 8, 500 | 0.058 |
| 6726 | 130 | 140 | 5 | 8.55 | 7.15 | 6, 000 | 8, 000 | 0.064 |
| 6728 | 140 | 150 | 5 | 9.15 | 7.75 | 5, 600 | 7, 500 | 0.07 |
| 6730 | 150 | 160 | 5 | 9.75 | 8.35 | 5, 300 | 7, 000 | 0.076 |
| 6732 | 160 | 170 | 5 | 10.35 | 8.95 | 5, 000 | 6, 700 | 0.082 |
| 6734 | 170 | 180 | 5 | 10.95 | 9.55 | 4, 800 | 6, 300 | 0.088 |
| 6736 | 180 | 190 | 5 | 11.55 | 10.15 | 4, 500 | 6, 000 | 0.094 |
| 6738 | 190 | 200 | 5 | 12.15 | 10.75 | 4, 200 | 5, 600 | 0.1 |
| 6740 | 200 | 210 | 5 | 12.75 | 11.35 | 4, 000 | 5, 300 | 0.106 |
Sealing Options:
| Suffix | Description | Temp Range |
| -ZZ | Steel shields (non-contact) | -30°C to +120°C |
| -2RS | Rubber seals (contact) | -40°C to +120°C |
Internal Clearance Options:
| Suffix | Clearance | Application |
| C2 | Less than C0 | Precision systems |
| C0 | Normal | General purpose |
| C3 | Greater than C0 | High temperature/speed |
| C4 | Larger than C3 | Special applications |
For complete technical drawings or custom requirements, please contact our engineering department.
Engineering Focus and Material Control
For the 6700 Series Deep Groove Ball Bearings, we use:
· GCr15 high-carbon chromium bearing steel for inner and outer rings
· High-strength steel or polymer cages depending on application
· Controlled surface finishing to reduce friction points
· Strict roundness and runout control during grinding stages
This structure helps reduce abnormal noise in long-running equipment and improves stability under continuous load conditions.
Real Application Performance
Based on our export and OEM experience, this bearing series performs well in environments such as:
· Electric motors running for long duty cycles
· Water pumps requiring stable rotation under load variation
· Household appliances where low noise is a key requirement
· Light industrial machinery with compact installation space
We have supported long-term customers who require consistent replacement compatibility across multiple production batches.
Production Capability and Quality Control
BMT Bearings operates automated production lines with centralized process control. Instead of manual-dependent production, we use:
· Automatic grinding lines for dimensional consistency
· Controlled assembly systems to reduce human deviation
· Multi-stage inspection including noise and vibration testing
· Batch traceability from raw material to finished packing
This ensures that every shipment of 6700 Series Deep Groove Ball Bearings remains stable in performance even for large-volume orders.
Why Buyers Choose BMT Bearings
We focus on long-term supply relationships rather than one-time transactions. Our customers choose us because:
· We provide stable OEM production for repeat orders
· We maintain consistent quality across large batches
· We support export packaging standards for global shipment
· We respond with engineering-based solutions, not generic replies
Our goal is to ensure the bearing performs reliably in real machines, not only in catalogs.
FAQ
1. What makes the 6700 Series suitable for compact equipment?
The thin-section design reduces space usage while maintaining load stability, making it ideal for compact mechanical structures.
2. Can you guarantee consistency between batches?
Yes. We use automated grinding and assembly systems with batch-level inspection to control dimensional and performance variation.
3. What type of lubrication is recommended?
Both grease and oil lubrication can be used depending on operating speed and temperature. We can adjust filling according to customer requirements.
4. Do you support OEM production?
Yes. We support OEM branding, customized tolerances, packaging, and application-based modifications.
5. How do you test bearing performance?
We conduct noise testing, vibration analysis, dimensional inspection, and surface quality checks before shipment.
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No.183,Longfeng,West of Zhangting industrial Zone,Yuyao,Ningbo,China
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