61903 2RS 6903 ZZ abec 5 17x30x7 mm hxhv si3n4 silicon nitride stainless steel hybrid ceramic ball bearing

• Customization: Available
• Aligning: Non-Aligning Bearing
• Separated: Unseparated
• Model NO.: 6903
• Rows Number: Single
• Load Direction: Radial Bearing
• Material: Ceramic
• Contact Angle: Standard
• OEM Service: Custom bearing′s size, logo, packing.
• Certificate: CE
• Feature: High temperature and corrosion resistant
• Full Ceramic Type: Ceramic rings and balls
• Hybrid Ceramic Type: Stainless steel rings and ceramic balls
• Seal Type: ZZ 2RS Open
• Bearing Balls and Rings: Black ceramic Si3N4, White ceramic ZrO2
• Bearing Retainer: PTFE PEEK Nylon or Steel Retainer
• Accuracy Grade: P0 P6 P5 P4 P2 or ABEC1 ABEC3 ABEC5 ABEC7 ABEC9
• Radial Clearance: C2 C0 C3 C4 C5
• Vibration Tolerance: V V1 V2 V3 V4
• Vibration Acceleration: Z Z1 Z2 Z3 Z4
• Lubrication: Oil or Grease
• Sample: Yes, In stock
• Bearing Price: Please contact us for factory wholeslae price.
• Transport Package: Universal Packing or Hxhv Packing
• Specification: 17x37x10mm
• Trademark: HXHV
• Origin: China
• HS Code: 6909110000
• Production Capacity: 60000 Pieces/Week
• Package Size: 20.00cm * 10.00cm * 2.00cm
• Package Gross Weight: 0.150kg

Product Description

Material:
1, Full Ceramic bearing's material:  SI3N4 or ZrO2 rings and balls, PTFE, PEEK or Nylon retainer.
2, Hybrid Ceramic bearing's material: Si3N4 or ZrO2 balls, chrome steel or stainless steel rings.
OEM Service: Custom bearing's size, logo, packing. 
Tip: The price above is only for reference, please contact us for ceramic bearing price.

What is better ceramic or steel bearings?
A ceramic ball bearing is also harder than steel bearings (up to 30%), which improves durability, and they also don't rust so less maintenance should be required. Most sealed ceramic bearings are actually hybrid ceramic bearings, which combine a steel race with ceramic ball bearings.

Why are ceramic bearings so good?
They are more corrosion-resistant, harder, and last longer in everyday use. In our higher-end CULT bearings (ceramic balls and races), lighter lubrication is needed, so they roll much quicker with less drag than standard steel bearings. Ceramic deals with heat better, so less friction is a bonus.

Why are ceramic bearings expensive?
This is mostly due to the additional time spent to perfect a quality ceramic ball. It takes weeks for a Kogel ball to sit in a tumbler and be perfectly polished.

Do ceramic bearings need grease?
No, full ceramic bearings can be run completely dry. They do not need lubrication to run. Ceramic is non-porous, unlike steel, as a result it is virtually frictionless.

How much faster are ceramic bearings?
He says ceramic bearings are said to be three to five times harder than steel bearings and, as a result, can withstand the force applied to them through chain tension and pedalling for longer. "The ceramic balls also insulate the steel races," says Sollenberger.

Are ceramic bearings loud?
Ceramic bearings are definitely louder than stock SS bearings.

Are ceramic ball bearings magnetic?
All-ceramic bearings are fully nonmagnetic. They also offer excellent resistance to corrosion and wear.

What is hybrid bearing?
Hybrid bearings have rings made of bearing steel and rolling elements made of bearing grade silicon nitride (Si3N4), which make the bearings electrically insulating. Silicon nitride rolling elements can extend bearing service life by offering enhanced bearing performance, even under difficult operating conditions.

What's the application of ceramic bearings?
Ceramic bearings can be used for skateboard, bike, motorcycle, bicycle, fishing reels, ceramic bottom bracket and so on.
ceramic bearings skateboard, ceramic wheel bearings, ceramic skate bearings, ceramic bearings bike,ceramic bearings bicycle, ceramic bearings road bike,ceramic wheel bearings motorcycle, high speed ceramic bearings, ceramic bearings for fishing reels, ceramic bearings motorcycle.

Dimension of ceramic Bearings

Model Number	Inner Diameter	Outer Diameter	Width	Weight
6900	10 mm	22 mm	6 mm	0.01 kg
6901	12 mm	24 mm	6 mm	0.011 kg
6902	15 mm	28 mm	7 mm	0.016 kg
6903	17 mm	30 mm	7 mm	0.018 kg
6904	20 mm	37 mm	9 mm	0.036 kg
6905	25 mm	42 mm	9 mm	0.045 kg
6906	30 mm	47 mm	9 mm	0.051 kg
6907	35 mm	55 mm	10 mm	0.08 kg
6908	40 mm	62 mm	12 mm	0.12 kg
6909	45 mm	68 mm	12 mm	0.14 kg
6910	50 mm	72 mm	12 mm	0.14 kg
6911	55 mm	80 mm	13 mm	0.19 kg
6912	60 mm	85 mm	13 mm	0.2 kg
6913	65 mm	90 mm	13 mm	0.2 kg
6914	70 mm	100 mm	16 mm	0.34 kg
6935	178 mm	200 mm	18 mm

Packing:

Universal Packing	Without any logo on bearings or packing.
HXHV Packing	With our brand HXHV on bearings and packing.
Customized Packing	Depends on buyer's requirements.
Original Brand Packing	Bearing and packing are both original. Please contact us for pictures.

OEM / Customized Service
We can engrave your logo or model number on bearings and packing box by laser.
If you need non-standard bearings. we can also product them for you.


Certificate:
Our bearings comes with CE certificate and our company has been verified by SGS Group. Please contact us for clear certificate photos.


Other Bearings:
We produce different types of full ceramic bearings and hybrid ceramic bearings. 

To get the latest price, please contact us.