R6 Deep Groove Radial Ball Bearing Double Rubber Seal Clearance C3 Bearing for Automotive Agricultural Tractors Construction Machinery
The Double Rubber Shielded Bearings R6 Deep Groove Radial Ball Bearing C3 is a compact, high-performance bearing designed for precision applications. It features double rubber shields to protect against dust and dirt while retaining lubrication. The deep groove design allows it to handle both radial and axial loads, and the C3 internal clearance ensures reliable operation in high-speed or high-temperature environments.
Key Features:
Type: Deep Groove Radial Ball Bearing
Shielding: Double Rubber Shields
Size: R6 (miniature bearing)
Clearance: C3 (greater than standard)
Load Capacity: Radial and axial loads
Applications:
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Small Electric Motors: Fans, power tools, and appliances.
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Precision Instruments: Optical devices and measuring tools.
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Compact Machinery: Small equipment with limited space.
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Office Equipment: Printers, scanners, etc.
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Toys and Models: Smooth rotation for hobby applications.
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Medical Devices: Lightweight and precise medical tools.

Technical Parameters of P4 Precision R Series Ball Bearings:
Basic Bearing No. | Bore d | Outer DiameterD | Width W | Radius r | Basic Load Rating KN |
Open | Shield Seal | Dynamic C |
Static C0
|
mm | inch | mm | inch | mm | inch | mm | inch | mm | inch |
R156 | 4.763 | 0.1875 | 7.938 | 0.3125 | 2.78 | 0.1094 | 3.18 | 0.1250 | 0.1 | 0.004 | 0.395 | 0.143 |
R166 | 4.763 | 0.1875 | 9.525 | 0.3750 | 3.18 | 0.1250 | 3.18 | 0.1250 | 0.1 | 0.004 | 0.71 | 0.268 |
R3 | 4.763 | 0.1875 | 12.700 | 0.5000 | 3.97 | 0.1562 | 4.98 | 0.1960 | 0.15 | 0.006 | 1.31 | 0.49 |
R3A | 4.763 | 0.1875 | 12.700 | 0.5000 | 4.98 | 0.1960 | 4.98 | 0.1960 | 0.15 | 0.006 | 1.31 | 0.49 |
R168 | 6.350 | 0.2500 | 9.525 | 0.3750 | 3.18 | 0.1250 | 3.18 | 0.1250 | 0.1 | 0.004 | 0.268 | 0.136 |
R188 | 6.350 | 0.2500 | 12.700 | 0.5000 | 3.18 | 0.1250 | 4.76 | 0.1875 | 0.15 | 0.006 | 0.83 | 0.37 |
R4 | 6.350 | 0.2500 | 15.875 | 0.6250 | 4.98 | 0.1960 | 4.98 | 0.1960 | 0.2 | 0.008 | 1.48 | 0.615 |
R4A | 6.350 | 0.2500 | 19.050 | 0.7500 | 5.56 | 0.2188 | 7.14 | 0.2812 | 0.3 | 0.012 | 2.34 | 0.885 |
R6 | 9.525 | 0.3750 | 22.225 | 0.8750 | 5.56 | 0.2188 | 7.14 | 0.2812 | 0.3 | 0.012 | 3.3 | 1.4 |
R8 | 12.70 | 0.5000 | 28.575 | 1.1250 | 6.35 | 0.2500 | 7.94 | 0.3125 | 0.3 | 0.012 | 3.912 | 2.245 |
R8-7 | 11.113 | 0.4375 | 28.575 | 1.1250 | 6.35 | 0.2500 | … | … | 0.3 | 0.012 | 3.912 | 2.245 |
R10 | 15.875 | 0.6250 | 34.925 | 1.3750 | 7.14 | 0.2812 | 8.73 | 0.3438 | 0.6 | 0.024 | 4.605 | 2.774 |
R12 | 19.050 | 0.7500 | 41.275 | 1.6250 | 7.94 | 0.3125 | 11.11 | 0.4375 | 0.6 | 0.024 | 7.246 | 4.445 |
Application Senarios of High Precision Ball Bearings

Customization Welcomed:
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We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.
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We can custom your packaging according to your design.
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All copyright owned by clients and we promised don't disclose any information.
Packing and Shipping:
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The deep groove ball bearings will be securely packaged individually, or tube packing or packed as customization packing
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Shipping method is negotiable.
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Other Technical Data of Bearings
ABEC-5 Tolerance Class ABEC-5 (P5)
Inner Ring | Tolerance in um/s |
d mm | Δdmp | Vdp²)Diameter Series | Vdmp | Kia | Sd | Sis3) | ΔBs | Vbs |
9 | 0,1,2,3,4 |
over | including | high | low | max | 3 | max | max | max | High | Low | max |
1)0.6 | 2.5 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
2.5 | 10 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -40 | 5 |
10 | 18 | 0 | -5 | 5 | 4 | 3 | 4 | 7 | 7 | 0 | -80 | 5 |
18 | 30 | 0 | -6 | 6 | 5 | 3 | 4 | 8 | 8 | 0 | -120 | 5 |
30 | 50 | 0 | -8 | 8 | 6 | 4 | 5 | 8 | 8 | 0 | -120 | 5 |
50 | 80 | 0 | -9 | 9 | 7 | 5 | 5 | 8 | 8 | 0 | -150 | 6 |
Outer Ring | Tolerance in um/s |
D mm | Δdmp | Vdp²)Diameter Series | Vdmp | Kia | SD4) SD15) | Sea4)5) | ΔBs | Vbs |
9 | 0,1,2,3,4 |
over | including | high | low | max |
| max | max | max | High | Low | max |
1)2.5 | 6 | 0 | -5 | 5 | 4 | 3 | 5 | 8 | 8 |
| 5 |
6 | 18 | 0 | -5 | 5 | 4 | 3 | 5 | 8 | 8 | 5 |
18 | 30 | 0 | -6 | 6 | 5 | 3 | 6 | 8 | 8 | 5 |
30 | 50 | 0 | -7 | 7 | 5 | 4 | 7 | 8 | 8 | 5 |
50 | 80 | 0 | -9 | 9 | 7 | 5 | 8 | 8 | 10 | 6 |
80 | 120 | 0 | -10 | 10 | 8 | 5 | 10 | 9 | 11 | 8 |
120 | 150 | 0 | -11 | 11 | 8 | 6 | 11 | 10 | 13 | 8 |
ABEC-7 Tolerance Class ABEC-7 (P4)
Inner Ring | Tolerance in um/s |
d mm | Δdmp | Δds | Vdp²)Diameter Series | Vdmp | Kia | Sd | Sia | ΔBs | Vbs |
7,8,9 | 1,7,2,3,4 |
over | including | high | low | high | low | max | max | max | max | max | High | low | Low | max |
1)0.6 | 2.5 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | -40 | 2.5 |
2.5 | 10 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -40 | -40 | 2.5 |
10 | 18 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 2.5 | 3 | 3 | 0 | -80 | -80 | 2.5 |
18 | 30 | 0 | -5 | 0 | -5 | 5 | 4 | 2.5 | 3 | 4 | 4 | 0 | -120 | -120 | 2.5 |
30 | 50 | 0 | -6 | 0 | -5 | 6 | 4 | 3 | 4 | 4 | 4 | 0 | -120 | -120 | 3 |
50 | 80 | 0 | -7 | 0 | -5 | 7 | 5 | 3.5 | 4 | 5 | 5 | 0 | -150 | -150 | 4 |
Outer Ring | Tolerance in um/s |
D mm | Δdmp | Δds | Vdp²)Diameter Series | Vdmp | Kia | Sd | Sia | ΔBs | Vbs |
7,8,9 | 1,7,2,3,4 |
over | including | high | low | high | low | max | max | max | max | max | High | low | max |
1)2.5 | 6 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 3 | 4 | 5 | Identical to ΔBs and VBs of inner ring of same bearing | 2.5 |
6 | 18 | 0 | -4 | 0 | -4 | 4 | 3 | 2 | 3 | 4 | 5 | 2.5 |
18 | 30 | 0 | -5 | 0 | -5 | 5 | 4 | 2.5 | 4 | 4 | 5 | 2.5 |
30 | 50 | 0 | -6 | 0 | -6 | 6 | 5 | 3 | 5 | 4 | 5 | 2.5 |
50 | 80 | 0 | -7 | 0 | -7 | 7 | 5 | 3.5 | 5 | 4 | 5 | 3 |
80 | 120 | 0 | -8 | 0 | -8 | 8 | 6 | 4 | 6 | 5 | 6 | 4 |
120 | 150 | 0 | -9 | 0 | -9 | 9 | 7 | 5 | 7 | 5 | 7 | 5 |
FAQ:
1.Q:Are you a factory or trading company?
A:Kent Bearing is specialized in manufacturing and exporting bearings, and we have our own factory and warehouse.
2.Q:Can I get some samples and do you offer free samples?
A:Yes, sure, Kent Bearing are honored to offer you samples.
3.Q: How about the shipping?
A: We can arrange the shipment or you may have the forwarder.
4.Q: Could you tell me the material of our bearing?
A: We have chrome steel, and stainless steel, ceramic and plastic material
5.Q: Can we get support if we have our own market position?
A: Please inform us detailed information about your market,we will discuss
and propose helpful suggestion for you and to find the best solution for you.