Bicycle headset bearing is a component of bicycle headset, which is the set of parts on a bicycle that provides a rotatable interface between the bicycle fork and the head tube of the bicycle frame itself. Bicycle headset bearings are usually ball bearings. They provide a low friction contact between the bearing cup and the steerer. Bicycle headset bearing is a component of bicycle headset, which is the set of parts on a bicycle that provides a rotatable interface between the bicycle fork and the head tube of the bicycle frame itself. Bicycle headset bearings are usually ball bearings. They provide a low friction contact between the bearing cup and the steerer. Ceramic Conical& Flat Burr for Coffee Grinder
Ceramic burrs for coffee grinders are usually made of 95% or 99% alumina.
Why do some famous coffee grinder manufacturers choose ceramic burrs instead of
stainless steel? You will learn about these below:
Ceramic Conical Burr,Ceramic Flat Burr,Adjustable Ceramic Grinding Rotor,Ceramic Grind Core,Conical Burr for Coffee Mill Jinghui Industry Ltd. , https://www.ceramicteks.com
Bicycle headset  bearing B543 36 / 45 degree bearing 39.7 * 50.8 * 50.8 mm full ball bearings
Â
1. The inner circle and outer ring can be designed according to the requirements.
2. Bearing steel quality, also can provide stainless steel material as needed, using ceramic ball structure.
3. The order quantity reaches 5000 sets. The sealing ring can provide different colors.
4. The maintainer is the steel stamping storage rack, and the nylon cage can be changed as needed.
5. SHELL grease or other high-performance oils.
6. Design of double-sided sealing ring.
Specification as followings :
Â
Bearing No.
ID
OD
H
Chamfer º
Qty of Seal
Ref THÂ ind.
Material
ACB41K
30.15
41
6.5
36°/45°
2
TH-873
chrome steel
ACB39
30.15
39
6.5
45°/45°
2
Â
chrome steel
ACB41H7Â
30.15
41
7
45°/45°
1
Â
chrome steel
ACB418
30.15
41.8
6.5
45°/45°
2
Â
chrome steel
ACB418H7
30.15
41.8
7
45°/45°
2
Â
chrome steel
ACB418H8
30.6
41.8
8
45°/45°
1
Â
chrome steel
ACB418H8F
30.6
41.8
8
45°/45°
1
TH-870
chrome steel
ACB44
30.15
44
8
45°/45°
2
Â
chrome steel
ACB1645
40
52
7
45°/45°
2
Â
chrome steel
ACB52
40
52
8
45°/45°
2
Â
chrome steel
ACB1645/12
40
52
12
45°/45°
1
Â
chrome steel
ACB518K
40
51.8
8
36°/45°
2
TH-073
chrome steel
Bearing No.
ID
OD
W
Seals
Seals Color
Cage
Â
30.15
41.00
6.50
Two different seals
Black
Nylon 66
MH-P03K
30.15
41.00
6.50
Two different seals
Blue
Nylon 66
MH-P04
30.15
39.00
6.50
Two different seals
Black
Nylon 66
MH-P08
30.45
41.80
6.50
Two different seals
Orange
Nylon 66
MH-P09K
27.15
38.00
6.50
Two different seals
Blue
Nylon 66
MH-P15
33.05
43.80
7.00
Two different seals
Black
Nylon 66
MH-P16
40.00
52.00
7.00
Two different seals
Black
Nylon 66
MH-03K & MH-P09K: Inner Ring with Black Oxide treatment. 
use
The precision of the bearing is more careful than the general mechanical parts to install and debug.
1) keep the bearings and their surrounding environment clean, and try to install them in closed or semi-closed conditions;
2) use suitable tools and methods (heating) to install the bearing to avoid the brutal percussion, which will cause a strong impact on the bearing and destroy the internal channel;
3) keep the bearings well lubricated and use proper lubricant;
4) pay attention to bearing rust protection, avoid using in damp places, and wear gloves when installing and disassembling;
5) to formulate daily operation specifications for bearing;
6) in case of high temperature, high speed and other special conditions, please communicate with our company in advance, and we will make appropriate adjustments to the products to meet the requirements.
safekeeping
The bearings are coated with anti-rust oil and anti-rust paper in the factory. As long as the packaging is not damaged, the quality of the bearing will be guaranteed.
But long stored in humidity below 65%, the temperature is 20 ºC about conditions, the shelf in 30 cm above the ground is advisable.
In addition, the storage area should avoid direct sunlight or contact with the cold wall.
Packaging:
1.Neutral Package:Plastic Bag +Â Carton +Â Pallet;
2.Commercial Package:Plastic Bag +Â Box +Â Carton +Â Pallet;
3.As the clients' requirement.
Delivery:
1.Less than 1000 pcs , we will send by express.( Door to Door, Convenient ),
Or by  air transport.( Fastest and safest, but expensive )
2.More than 1000pcs , we will send by sea.( Cheapest, safe )
Payment:
1.Less than 1000 pcs , 100% T/T, Western Union in advance.
2.Between 1000-10000pcs, TT, Western Union, MoneyGram.
3.More than 10000pcs , TT, L/C ,Western Union, MoneyGram.
Bicycle headset  bearing B543 36 / 45 degree bearing 39.7 * 50.8 * 50.8 mm full ball bearings
Â
1. The inner circle and outer ring can be designed according to the requirements.
2. Bearing steel quality, also can provide stainless steel material as needed, using ceramic ball structure.
3. The order quantity reaches 5000 sets. The sealing ring can provide different colors.
4. The maintainer is the steel stamping storage rack, and the nylon cage can be changed as needed.
5. SHELL grease or other high-performance oils.
6. Design of double-sided sealing ring.
Specification as followings :
Â
Bearing No.
ID
OD
H
Chamfer º
Qty of Seal
Ref THÂ ind.
Material
ACB41K
30.15
41
6.5
36°/45°
2
TH-873
chrome steel
ACB39
30.15
39
6.5
45°/45°
2
Â
chrome steel
ACB41H7Â
30.15
41
7
45°/45°
1
Â
chrome steel
ACB418
30.15
41.8
6.5
45°/45°
2
Â
chrome steel
ACB418H7
30.15
41.8
7
45°/45°
2
Â
chrome steel
ACB418H8
30.6
41.8
8
45°/45°
1
Â
chrome steel
ACB418H8F
30.6
41.8
8
45°/45°
1
TH-870
chrome steel
ACB44
30.15
44
8
45°/45°
2
Â
chrome steel
ACB1645
40
52
7
45°/45°
2
Â
chrome steel
ACB52
40
52
8
45°/45°
2
Â
chrome steel
ACB1645/12
40
52
12
45°/45°
1
Â
chrome steel
ACB518K
40
51.8
8
36°/45°
2
TH-073
chrome steel
Bearing No.
ID
OD
W
Seals
Seals Color
Cage
Â
30.15
41.00
6.50
Two different seals
Black
Nylon 66
MH-P03K
30.15
41.00
6.50
Two different seals
Blue
Nylon 66
MH-P04
30.15
39.00
6.50
Two different seals
Black
Nylon 66
MH-P08
30.45
41.80
6.50
Two different seals
Orange
Nylon 66
MH-P09K
27.15
38.00
6.50
Two different seals
Blue
Nylon 66
MH-P15
33.05
43.80
7.00
Two different seals
Black
Nylon 66
MH-P16
40.00
52.00
7.00
Two different seals
Black
Nylon 66
MH-03K & MH-P09K: Inner Ring with Black Oxide treatment.
use
The precision of the bearing is more careful than the general mechanical parts to install and debug.
1) keep the bearings and their surrounding environment clean, and try to install them in closed or semi-closed conditions;
2) use suitable tools and methods (heating) to install the bearing to avoid the brutal percussion, which will cause a strong impact on the bearing and destroy the internal channel;
3) keep the bearings well lubricated and use proper lubricant;
4) pay attention to bearing rust protection, avoid using in damp places, and wear gloves when installing and disassembling;
5) to formulate daily operation specifications for bearing;
6) in case of high temperature, high speed and other special conditions, please communicate with our company in advance, and we will make appropriate adjustments to the products to meet the requirements.
safekeeping
The bearings are coated with anti-rust oil and anti-rust paper in the factory. As long as the packaging is not damaged, the quality of the bearing will be guaranteed.
But long stored in humidity below 65%, the temperature is 20 ºC about conditions, the shelf in 30 cm above the ground is advisable.
In addition, the storage area should avoid direct sunlight or contact with the cold wall.
Packaging:
1.Neutral Package:Plastic Bag +Â Carton +Â Pallet;
2.Commercial Package:Plastic Bag +Â Box +Â Carton +Â Pallet;
3.As the clients' requirement.
Delivery:
1.Less than 1000 pcs , we will send by express.( Door to Door, Convenient ),
Or by  air transport.( Fastest and safest, but expensive )
2.More than 1000pcs , we will send by sea.( Cheapest, safe )
Payment:
1.Less than 1000 pcs , 100% T/T, Western Union in advance.
2.Between 1000-10000pcs, TT, Western Union, MoneyGram.
3.More than 10000pcs , TT, L/C ,Western Union, MoneyGram.
The grinding burrs are the primary function parts to pulverize whole coffee beans into powder. Flat burrs are flat and have tiny teeth to grind the coffee beans into smaller particles. Conical burrs have a cone-shaped spinning inner burr and a stationary outer burr.
1. Alumina ceramic is an eco-friendly material which meet
FDA, LFGB regulations fully;
2. Alumina ceramic have much better wear resistance which is
around 276 times than stainless steel.
3. The ceramic burr has so less heat in grinding that the
flavor of fresh coffee bean powder can be maintained.
4. The ceramic burr has stable chemical properties, will not
be oxidized in the air, nor will it react with acid and alkali.
5. Ceramic grinding cores have cost advantages and high production
efficiency.
Our products can be made into white, gray, brown, black and
other colors as required. Whether it is R&D samples produced in small
batches or low-cost projects in large batches, we can provide the best
solutions and ODM customized services.
Bicycle Headset Bearing B543 36 / 45 Degree Full Ball Bearings
Model NO.: B543
Size: 39.7 * 50.8 * 50.8 mm
Stock: Rich
Quality: Best
Weight: 0.01kgs
Cagee Material: J Plate Stamping
Trademark: JPG
Transport Package: as Customer′s Request
Specification: depends on order
Origin: Jiangsu Nanjing
HS Code: 84821020
Model NO.: B543
Size: 39.7 * 50.8 * 50.8 mm
Stock: Rich
Quality: Best
Weight: 0.01kgs
Cagee Material: J Plate Stamping
Trademark: JPG
Transport Package: as Customer′s Request
Specification: depends on order
Origin: Jiangsu Nanjing
HS Code: 84821020