Product Description

No matter for the roller skates, skateboard, long board, or fitness equipment, CZPT bearing is the best choice to upgrade yours.

 

We Can Do Customized Service For bearings:
 

You can mark your logo or your company name on bearings, here are 2 different ways, 1 is print your logo on packing, another ways is engrave your logo on bearing, bellow here is pictures for your referce.

If you do not have the picture, our engineer can also design a perfect templet for you!

Technical Data
 

Inside Ø (mm):	8
Outside Ø (mm):	22
Width (mm):	7
Tolerance for inside-Ø (mm):	0/-0,008
Tolerance for outside-Ø (mm):	0/-0,009
Tolerance for width (mm):	0/-0,12
Rows Of Balls:	single row
Seal:	ZZ
Internal Clearance:	CN (Standard)
Flange:	no
Slot & Snap Ring:	no
Ring Material:	Chrome Steel
Rolling Element Material:	Chrome Steel
Cage Material:	Sheet Steel
Full Complement Ball Set:	no
Magnetic:	yes
Type of lubrication:	greased
Lifetime lubricated:	yes
Product weight:	0,0120 Kg

Features
 

• miniature ball bearing with smallest dimensions
• suitable for high radial loads and light axial loads in both directions
• suitable for high running accuracy, quiet running and very high speeds
• seal: non-contact gap seal on both sides made of a profiled sheet steel disc (ZZ) for higher speeds than with rubber seal
• good fixed bearing property, but can also be used as a floating bearing, each in both directions

Principal dimensions			Basic load ratings		Fatigue	Speed ratings		Mass	Designation
			dynamic	static	load
					limit	Reference speed	Limiting speed
d	D	B	C	C0	Pu				Explorer bearing
mm			kN		kN	r/min		kg	–
85	180	41	140	96,5	3,55	8000	5000	4,25	6317 *
85	180	41	140	96,5	3,55	–	2400	4,25	6317-2RS1 *
85	180	41	140	96,5	3,55	8000	4000	4,25	6317-2Z *
85	180	41	140	96,5	3,55	–	2400	4,25	6317-RS1 *
85	180	41	140	96,5	3,55	8000	5000	4,25	6317-Z *
85	210	52	174	137	4,75	7000	4500	9,50	6417
88,9	165,1	28,575	95,6	73,5	2,8	7500	5300	2,85	RLS 28
88,9	206,375	44,45	153	117	4,15	6300	4500	6,50	RMS 28
90	115	13	19,5	22	0,915	11000	7000	0,28	61818
90	115	13	19,5	22	0,915	–	3200	0,28	61818-2RS1
90	115	13	19,5	22	0,915	11000	5600	0,28	61818-2RZ
90	125	18	33,2	31,5	1,23	11000	6700	0,59	61918
90	140	16	43,6	39	1,56	10000	6300	0,85	16018 *
90	140	24	60,5	50	1,96	10000	6300	1,15	6018 *
90	140	24	60,5	50	1,96	–	2800	1,15	6018-2RS1 *
90	140	24	60,5	50	1,96	10000	5000	1,15	6018-2Z *
90	140	24	60,5	50	1,96	–	2800	1,15	6018-RS1 *
90	140	24	60,5	50	1,96	10000	6300	1,15	6018-Z *
90	160	30	101	73,5	2,8	8500	5300	2,15	6218 *
90	160	30	101	73,5	2,8	–	2600	2,15	6218-2RS1 *
90	160	30	101	73,5	2,8	8500	4300	2,15	6218-2Z *
90	160	30	101	73,5	2,8	–	2600	2,15	6218-RS1 *
90	160	30	101	73,5	2,8	8500	5300	2,15	6218-Z *
90	190	43	151	108	3,8	7500	4800	4,90	6318 *
90	190	43	151	108	3,8	–	2400	4,90	6318-2RS1 *
90	190	43	151	108	3,8	7500	3800	4,90	6318-2Z *
90	190	43	151	108	3,8	–	2400	4,90	6318-RS1 *
90	190	43	151	108	3,8	7500	4800	4,90	6318-Z *
90	225	54	186	150	5	6700	4300	11,5	6418
95	120	13	19,9	22,8	0,93	11000	6700	0,30	61819
95	120	13	19,9	22,8	0,93	–	3000	0,30	61819-2RS1
95	120	13	19,9	22,8	0,93	11000	5300	0,30	61819-2RZ
95	130	18	33,8	33,5	1,43	10000	6300	0,61	61919
95	130	18	33,8	33,5	1,43	–	3000	0,61	61919-2RS1
95	145	16	44,8	41,5	1,63	9500	6000	0,89	16019 *
95	145	24	63,7	54	2,08	9500	6000	1,20	6019 *
95	145	24	63,7	54	2,08	–	2800	1,20	6019-2RS1 *
95	145	24	63,7	54	2,08	9500	4800	1,20	6019-2Z *
95	145	24	63,7	54	2,08	–	2800	1,20	6019-RS1 *
95	145	24	63,7	54	2,08	9500	6000	1,20	6019-Z *
95	170	32	114	81,5	3	8000	5000	2,60	6219 *
95	170	32	114	81,5	3	–	2400	2,60	6219-2RS1 *
95	170	32	114	81,5	3	8000	4000	2,60	6219-2Z *
95	170	32	114	81,5	3	–	2400	2,60	6219-RS1 *
95	170	32	114	81,5	3	8000	5000	2,60	6219-Z *
95	200	45	159	118	4,15	7000	4500	5,65	6319 *
95	200	45	159	118	4,15	–	2200	5,65	6319-2RS1 *
95	200	45	159	118	4,15	7000	3600	5,65	6319-2Z *
95	200	45	159	118	4,15	–	2200	5,65	6319-RS1 *
95	200	45	159	118	4,15	7000	4500	5,65	6319-Z *
100	125	13	19,9	24	0,95	10000	6300	0,31	61820
100	125	13	19,9	24	0,95	–	3000	0,31	61820-2RS1
100	125	13	19,9	24	0,95	10000	5300	0,31	61820-2RZ
100	140	20	42,3	41	1,63	9500	6000	0,83	61920
100	150	16	46,2	44	1,73	9500	5600	0,91	16571 *
100	150	24	63,7	54	2,04	9500	5600	1,25	6571 *
100	150	24	63,7	54	2,04	–	2600	1,25	6571-2RS1 *
100	150	24	63,7	54	2,04	9500	4500	1,25	6571-2Z *
100	150	24	63,7	54	2,04	–	2600	1,25	6571-RS1 *
100	150	24	63,7	54	2,04	9500	5600	1,25	6571-Z *
100	180	34	127	93	3,35	7500	4800	3,15	6220 *
100	180	34	127	93	3,35	–	2400	3,15	6220-2RS1 *
100	180	34	127	93	3,35	7500	3800	3,15	6220-2Z *
100	180	34	127	93	3,35	–	2400	3,15	6220-RS1 *
100	180	34	127	93	3,35	7500	4800	3,15	6220-Z *
100	215	47	174	140	4,75	6700	4300	7,00	6320
100	215	47	174	140	4,75	6700	3400	7,00	6320-2Z
100	215	47	174	140	4,75	6700	4300	7,00	6320-Z
101,6	215,9	44,45	174	140	4,75	6000	4300	6,55	RMS 32
105	130	13	20,8	19,6	1	10000	6300	0,32	61821
105	130	13	20,8	19,6	1	–	2800	0,32	61821-2RS1
105	130	13	20,8	19,6	1	10000	5000	0,32	61821-2RZ
105	145	20	44,2	44	1,7	9500	5600	0,87	61921
105	160	18	54	51	1,86	8500	5300	1,20	16571 *
105	160	26	76,1	65,5	2,4	8500	5300	1,60	6571 *
105	160	26	76,1	65,5	2,4	–	2400	1,60	6571-2RS1 *
105	160	26	76,1	65,5	2,4	8500	4300	1,60	6571-2Z *
105	160	26	76,1	65,5	2,4	–	2400	1,60	6571-RS1 *
105	160	26	76,1	65,5	2,4	8500	5300	1,60	6571-Z *
105	190	36	140	104	3,65	7000	4500	3,70	6221 *
105	190	36	140	104	3,65	–	2200	3,70	6221-2RS1 *
105	190	36	140	104	3,65	7000	3600	3,70	6221-2Z *
105	190	36	140	104	3,65	–	2200	3,70	6221-RS1 *
105	190	36	140	104	3,65	7000	4500	3,70	6221-Z *
105	225	49	182	153	5,1	6300	4000	8,25	6321
105	225	49	182	153	5,1	6300	3200	8,25	6321-2Z
105	225	49	182	153	5,1	6300	4000	8,25	6321-Z
110	140	16	28,1	26	1,25	9500	5600	0,60	61822
110	140	16	28,1	26	1,25	–	2600	0,60	61822-2RS1
110	140	16	28,1	26	1,25	9500	4500	0,60	61822-2RZ
110	150	20	43,6	45	1,66	9000	5600	0,90	61922
110	170	19	60,2	57	2,04	8000	5000	1,45	16571 *
110	170	28	85,2	73,5	2,4	8000	5000	1,95	6571 *
110	170	28	85,2	73,5	2,4	–	2400	1,95	6571-2RS1 *
110	170	28	85,2	73,5	2,4	8000	4000	1,95	6571-2Z *
110	170	28	85,2	73,5	2,4	–	2400	1,95	6571-RS1 *
110	170	28	85,2	73,5	2,4	8000	5000	1,95	6571-Z *
110	200	38	151	118	4	6700	4300	4,35	6222 *
110	200	38	151	118	4	6700	3400	4,35	6222-2Z *
110	200	38	151	118	4	6700	4300	4,35	6222-Z *
110	240	50	203	180	5,7	6000	3800	9,55	6322
114,3	238,125	50,8	203	180	5,7	5300	3800	8,90	RMS 36
120	150	16	29,1	28	1,29	8500	5300	0,65	61824
120	150	16	29,1	28	1,29	–	2400	0,65	61824-2RS1
120	150	16	29,1	28	1,29	8500	4300	0,65	61824-2RZ
120	165	22	55,3	57	2,04	8000	5000	1,20	61924
120	180	19	63,7	64	2,2	7500	4800	1,60	16571 *
120	180	28	88,4	80	2,75	7500	4800	2,05	6571 *

ZheJiang CZPT Bearing Co.,ltd

ZheJiang CZPT Bearing Co.,ltd is a professional manufacturer and supplier for bearings for more than 15 years. Our factory is located in ZheJiang  province and covering an area of 20,000 square meters, it boasts of 120 staff, among which 6 are senior engineers and technicians, with a registered capital of 20,000,000 and an annual production capacity of 30,000,000 units of bearings.
our export department office is located in ZheJiang  city which is a port city ,for convenience inspection before shipment .
Our main products include ball bearings,roller bearings, wheel hub bearings etc. ,but also we accept customized products design and OEM Service based on the detailed drawings from our clients .
SKF, NSK, NTN, KOYO, NACHI, IKO, NMB , these famous brands all have deep connection and strong cooperation relationship with us . We can also export the above products in appropriate way according to clients’ market .  
After several years’ development, our company has formed a professional management system and our corporate value is “Considering more for customer’s consideration”, which is also our business principle.
Our products are comprehensive used in different fields such as , mining, petroleum, machinery, electric power, furniture etc. We sincerely wish to build reliable relationship with every of our customers from worldwide.
“Good quality with sincere service”  is our slogan to our clients.
 

Packing way:
 

* Industrial package + outer carton + pallet

* Single box + outer carton + pallet

* Tube package + middle box + outer carton + pallet

* Original packaging + pallet

* According to your requirements

How to Select:
Choose the bearing number or size.
Pricing adjusts according to the bearing size selected.

Our Main Customer:
-Manufacturer self use 
-Bearing Trader 
-Hardware shop 
-Automobile Sales Service Shop 4S

Why choose ZheJiang CZPT bearing?

Customer Service:

Our team has over 15 years combined experience with expert product and industry knowledge. We can advise upon the most suitable products for your application. All queries are handled by our team within 24 hours every working day.

Professional Team:

Our team undertakes training on a regular basis for continuous professional development. This ensures the high level of professionalism and skills our team showcases through our client visits, industry events and product knowledge.

We specialized in providing customized services to all major OEMS

Q1: What does ZheJiang CZPT Bearing & Manufacturing do? What are your specialties?
A1: With over 15 years’ experience, ZheJiang CZPT Bearing is a manufacturer of a full line of standard ball and roller bearings. Currently, we offer 13 different bearing series which are available across a wide size range, including IDs from 5/64″ to 6-1/2″ and ODs from 15/64″ to 13-3/4″.

In addition, we also make custom, made-to-order ball bearings and roller bearing components that aren’t shown on our website or catalog. We have quoted items per print, per sample, and as interchanges for other manufacturer’s products.

Q2: What types and styles of bearings do you make?
A2: We make a variety of bearing types, including ball bearings, roller bearings, thrust bearings, combination bearings, pillow block bearings, custom bearing, and more.

Moreover, we can make bearings in many styles and configurations, including single direction, double direction, caged, banded, separated, open, enclosed, full ball compliment, etc.

Q3: Do you offer any unique secondary services?
A3: Besides bearings, we offer a variety of secondary services to our contract manufacturing customers. Our diverse manufacturing capabilities include CNC turning and machining, manual turning and machining, CNC milling, lapping, super finishing, induction welding, laser marking of finished parts, automatic saw cutting, reverse engineering, and CNC grinding, including ID grinding, OD grinding, cylindrical grinding, centerless grinding, surface grinding, and double disk grinding.

Q4: What services separate ZheJiang CZPT Bearing from other suppliers?
A4: Unlike ZheJiang CZPT Bearing, some bearing suppliers do not manufacture their own products. Many of them purchase bearings in other factory, and quite often, these suppliers will change their source of supply without informing customers, resulting in quality issues. ZheJiang CZPT Bearing’s products are manufactured in north China manufacturing facility.

In addition, we hold a unique spot in the industry because we are CZPT to combine the capabilities of a large bearing manufacturer with the precision and attention to detail of a small bearing shop. This allows us to offer personalized service, short lead times, on-time delivery, trusted bearing expertise, innovative solutions, top quality products, and more.

Q5: Do you have any industry certifications?
A5: Yes. Upon request, we can provide SGS, material certs, inspection reports, and material trace ability. Please include all certifications you require along with your RFQ, if any.

Q6: What is your privacy policy, return policy, and terms & conditions? Is there a warranty?
A6: We do offer a warranty that says all products are free of manufacturing defects, and depending on the circumstances, we may allow returns with a 25% restocking fee.

Q7: What is your manufacturing process?
A7:  All materials are sourced domestically (i.e., chrome steel, stainless steel, ceramic, bronze, brass, etc.). Individual components for the bearings are machined in-house on our CNC lathes. Machined pieces are sent out locally for heat treating (hardening). Upon return, the pieces are precision machined, washed, and assembled into finished bearings. Bearings are laser marked and either stocked or packaged for shipping.
                                         

             

We are the factory that is willing to accompany with you to grow and develop together, we hope to establish a long-term cooperative relationship with you. And you are very welcome to contact me and visit our factory.

Mechanical advantages of pulleys

A pulley is a mechanical device used to transmit motion. The device has a variety of uses, including lifting heavy objects. In this article, we will discuss the mechanical advantages, types, common uses and safety considerations of pulleys. We’ll also discuss how to identify pulleys and their components, and what to look out for when using pulleys. Read on to learn more about pulleys.

Mechanical advantages of pulleys

The mechanical advantage of pulleys is that they change the direction of force from 1 direction to another. In this way, the person lifting the heavy object can change its position with minimal effort. The pulleys are also easy to install and require no lubrication after installation. They are also relatively cheap. Combinations of pulleys and cables can be used to change the direction of the load.
The mechanical advantage of a pulley system increases with the number of ropes used in the system. The more cycles a system has, the more efficient it is. If the system had only 1 rope, the force required to pull the weight would be equal. By adding a second rope, the effort required to pull the weight is reduced. This increase in efficiency is known as the mechanical advantage of the pulley.
Pulleys have many uses. For example, ziplines are 1 application. This is a good example of pulleys in use today. Pulley systems can be complex and require a lot of space. Using ziplines as an example, advanced students can calculate the mechanical advantage of multiple pulleys by dividing the work done by each pulley by the remainder or fraction. Regents at the University of Colorado created a zipline with K-12 input.
Another use for pulleys is weight lifting. This technique is very effective when using multiple strands of rope. A single rope going from 1 pulley to the other with just 2 hands is not enough to lift heavy objects. Using a pulley system will greatly increase the force you receive. This power is multiplied over a larger area. So your lifting force will be much greater than the force exerted by a single rope.
The pulley is a great invention with many uses. For example, when lifting heavy objects, pulleys are a great way to get the job done, and it’s easier to do than 1 person. The pulley is fixed on a hinge and rotates on a shaft or shaft. Then pull the rope down to lift the object. A pulley assembly will make the task easier. In addition, it will also allow power to be transferred from 1 rotary shaft to another.

Types of pulleys

If you are an engineer, you must have come across different types of pulleys. Some pulleys come in multiple types, but a typical pulley has only 1 type. These types of pulleys are used in various industrial processes. Here are some common types of pulleys that engineers encounter on the job. In addition to the above, there are many more. If you haven’t seen them in practice, you can check out a list of the different types below.
Fixed pulleys: Fixed pulleys have a roller attached to a fixed point. The force required to pull the load through the fixed pulley is the same as the force required to lift the object. Movable pulleys allow you to change the direction of the force, for example, by moving it laterally. Likewise, movable pulleys can be used to move heavy objects up and down. Commonly used in multi-purpose elevators, cranes and weight lifters.
Composite pulleys combine fixed and movable pulleys. This combination adds to the mechanical advantage of both systems. It can also change the direction of the force, making it easier to handle large loads. This article discusses the different types of pulleys used for lifting and moving. Braided pulleys are an example of these pulleys. They combine the advantages of both types.
A simple pulley consists of 1 or more wheels, which allow it to reverse the direction of the force used to lift the load. On the other hand, dual-wheel pulleys can help lift twice the weight. By combining multiple materials into 1 pulley, a higher ME will be required. Regardless of the type of pulley, understanding the principles behind it is critical.
Pulleys are an important part of construction and mechanical engineering, and their use dates back to Archimedes. They are a common feature of oil derricks and escalators. The main use of pulleys is to move heavy objects such as boats. In addition to this, they are used in other applications such as extending ladders and lifting heavy objects. The pulley also controls the aircraft rudder, which is important in many different applications.

Commonly used

Common uses for pulleys are varied. Pulley systems are found throughout most areas of the house, from adjustable clotheslines to motor pulleys in different machines. Commercially, 1 of the most common uses is for cranes. Cranes are equipped with pulleys to lift heavy objects. It is also common to use pulley systems in tall buildings, which allow tall buildings to move with relative ease.
Pulleys are commonly used in interception and zipline systems, where a continuous rope around the pulley transmits force. Depending on the application, the rope is either light or strong. Pulleys are formed by wrapping a rope around a set of wheels. The rope pulls the object in the direction of the applied force. Some elevators use this system. Pull a cable on 1 end and attach a counterweight on the other end.
Another common use for pulleys is to move heavy objects. Pulleys mounted on walls, ceilings or other objects can lift heavy objects like heavy toolboxes or 2×4 planks. The device can also be used to transfer power from 1 rotating shaft to another. When used to lift heavy objects, pulleys can be used to help you achieve your goals of a good workout.
Pulley systems have a variety of uses, from the most basic to the most advanced. Its popularity is indisputable and it is used in different industries. A good example is timing belts. These pulleys transmit power to other components in the same direction. They can also be static or dynamic depending on the needs of the machine. In most cases, the pulley system is custom made for the job.
Pulley systems can be simple or complex, but all 3 systems transfer energy efficiently. In most cases, the mechanical advantage of a single pulley is 1 and the mechanical advantage of a single active pulley is 2. On the other hand, a single live pulley only doubles the force. This means you can trade effort for distance. Pulleys are the perfect solution for many common applications.

Safety Notice

If you use pulleys, you need to take some safety precautions. First, make sure you’re wearing the correct protective gear. A hard hat is a must to avoid being hit by falling objects. You may also want to wear gloves for added protection. You should also maintain a good distance from the pulley so that nearby people can walk around it safely.
Another important safety measure to take before using a chain hoist is to barricade the area to be lifted. Use marker lines to prevent the load from sliding when moving horizontally. Finally, use only the sprocket set for vertical lift. Always install shackle pins before lifting. You should also wear personal protective equipment such as earplugs and safety glasses when using the chain hoist.
In addition to these safety measures, you should also use cables made from aerospace-grade nylon. They will last many cycles and are made of high quality materials. Also, make sure the cables are lubricated. These measures reduce friction and corrosion. No matter what industry you are in, be sure to follow these precautions to ensure a long service life for your cables. Consult the cable manufacturer if you are unsure of the appropriate material. A company with 60 years of experience in the cable industry can recommend the right material for your system.