Ningbo Kent Bearing Co., Ltd
Ningbo Kent Bearing Co., Ltd
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R188ZZ Double Metal Shielded Ball Bearing Chrome Steel P6 Z2 Bearing for Automobile Motorcycles Wheels
The R188ZZ Bearing is a high-performance, shielded ball bearing made from chrome steel, designed for applications requiring precision, durability, and reliability. With a P6 precision grade, this bearing ensures smooth operation, low noise, and high rotational accuracy, making it ideal for wheel applications such as skateboards, inline skates, and small vehicles. The double metal shields (ZZ) provide effective protection against dust and debris while retaining lubrication, ensuring long-lasting performance. Its compact size and robust construction make it a popular choice for customized wheel systems.
Chrome Steel Construction: Provides excellent wear resistance and durability.
Double Metal Shields (ZZ): Protects against dust and debris while retaining lubrication.
P6 Precision Grade: Ensures smooth and quiet operation with minimal vibration.
High-Speed Capability: Designed for efficient operation at high rotational speeds.
Compact and Lightweight: Ideal for applications with space constraints.
Low Maintenance: Shielded design reduces the need for frequent relubrication.
Customizable for Wheels: Tailored for use in skateboards, inline skates, and small vehicles.
| Parameter | Measurement (mm) |
|---|---|
| Inner Diameter (ID) | 6.35mm |
| Outer Diameter (OD) | 12.7 mm |
| Width (W) | 3.18mm |
High Precision: P6 precision ensures minimal vibration and noise, making it ideal for smooth wheel rotation.
Contamination Protection: The double metal shields (ZZ) ensure reliable performance in dusty or dirty environments.
High-Speed Performance: Designed for smooth operation at high rotational speeds, perfect for wheels.
Durability: Chrome steel construction provides excellent resistance to wear and tear.
Low Friction: Designed for efficient operation, reducing energy loss and heat generation.
Compact Design: Its small size makes it suitable for compact wheel systems.
Inline Skate Wheels: Ensures efficient and quiet operation in inline skates.
Scooter Wheels: Provides reliable performance in scooter wheels for both recreational and professional use.
Hoverboard Wheels: Suitable for hoverboard wheels, offering smooth rotation and durability.
Model Car Wheels: Used in model cars and other hobby projects requiring compact and precise bearings.
Technical Parameters of P6 R Series Ball Bearings:
Application Senarios of High Precision Ball Bearings
Customization Welcomed:
We can printing your brand (logo,artwork)on the shield or laser engraving your brand on the shield.
We can custom your packaging according to your design.
All copyright owned by clients and we promised don't disclose any information.
Packing and Shipping:
The deep groove ball bearings will be securely packaged individually, or tube packing or packed as customization packing
Shipping method is negotiable.
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.