Tag Archives: swing gear

China Good quality Single Row Ball Swing Bearing (1199DBS103y) Turntable Bearing with Internal Gear Teeth Slewing Ring Bearing Slew Ring Bearing with Great quality

Merchandise Description

You should see details for slewing ring bearing swing bearing turntable bearing:
 

 

If you want a lot more information, remember to truly feel free of charge to get in touch with us for developing and creating, Attn: Susan Yang

1. Why decide on CZPT slewing bearings
Who we are?
We (HangZhou CZPT unique weighty-responsibility and huge bearing manufacturing CO., LTD) are a professional
bearing company in the world, proven in 2000, specializing in slewing bearings, slewing drives
and unique bearings, with design, generation, income, advertising and provider from OD200mm to 8000mm.
For 18 many years experiences, our bearings have flied to more than fifty nations.

Our specialized staff:
We have sixty staff, with 6 experienced engineers and expert technicists.
All our bearings are developed by CAD-packages, made in accordance to customers’ specific demands.
Our specialized team can also validate security & reliability dependent on the load situation and the toughness of raceway
as properly as gear and bolt connections.

Manufacturing:
Geared up with innovative producing equipments and test instruments, all bearings are of uniform marking
and packing with excellent quality, sensible prices and best solutions.

Top quality:
We have been certificated by ISO9001:2008, and we are also aligned to intercontinental top quality standards
from software consulting and engineering to productions, examinations, documentations and dispatch.
We will get ready further test reports if consumers want.

two. Construction of CZPT slewing bearings
Main Sorts:
Single row ball slewing ring bearings
Double row ball slewing ring bearings
Crossed roller slewing ring bearing
A few row cylindrical roller slewing bearings
BALL & ROLLER blended slewing bearings
Flanged slewing ring bearing
Gear Type:
Slewing bearings with external gear
Slewing bearings with inside equipment
Slew bearings with no gear
Flange sort:
Slewing bearings with external flange and inside equipment
Slew rings with interior flange and external equipment
Slew bearings with external and internal flange

3. About CZPT bearings Advantages:
3.1 introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office developing. 
3.2 Highlighted goods: slewing bearing and slewing drive
3.3 Funds: Present is 1 million RMB, but we are increasing the cash to ten million RMB
three.4 Employees: sixty
3.5 Certificate: ISO9001:2008, 3.1 certification, CCS certificate
All CZPT slew rings can betested by the 3rd party inspection organization if consumer demands, this kind of as BV, CCS, SGS, LR, Abdominal muscles and so on. All swing bearings inspection studies will be provided to consumers, which includes raw substance certificate, warmth remedy certificate, UT&PT and so on.
3.6 Yearly Exportation: 8 million USD
three.7 Warranty Period of time: All CZPT slewing ring bearings have a warranty time period of eighteen months, for some special doing work issue, guarantee interval can be lengthened to 3-4 a long time.
three.8 Production Time: All CZPT slewing ring bearings can be usually delivered timely, usual creation time is fifteen-fifty times dependent on different slew bearings diameters, often slew rings will be in stock.
3.9 Specialized Management
All CZPT slewing ring bearings are cast rings with content metal 50Mn or 42CrMo, slewing rings are machined by CNC lathe, slew bearings raceway are quenched by way of medium-frequency hardening with hardness fifty five-60HRC, turntable bearings are drilled holes by CNC drilling machine, slew gears are machined by hobbing equipment with equipment quenched if essential, swing bearings then are grinded by grinding machine with larger precision.

four. CZPT Slewing Bearing Packing 
four.1 Fundamental Packing
Bearing floor is coated with the anti-rust oil initial and then wrapped with the plastic film
And then packed with kraft paper and professional belts
At previous, with wood box absolutely at the outer packing to invoid the rust or the moist
We can depend on the customers  demand to be packed

four.2 CZPT slewing ring bearings can be packed by diverse methods.
If bearing diameter is significantly less than 2300mm, slewing rings will be typically packed by square plywood situation.
If bearing diameter is much more than 2300mm, slewing rings can be packed by sq. plywood case, spherical plywood scenario, or metal tripod. Each and every bundle way can be absolutely retained products safely and securely.

5. CZPT Slewing Bearing Transportation:
Slewing bearings can be supplied distinct supply phrases, this sort of as EXW, FOB, CIF, DDU and so on.
Also, slewing rings can be transported by diverse transportation techniques, by convey (this sort of as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.

Kinds of Ball Bearings

There are numerous types of ball bearings: Double-row angular contact, Four-position contact, Self-aligning, and Ceramic hybrid. Here’s a brief description of each and every. For far more information, go through our post about Double-row angular contact ball bearings. You are going to be greater educated about how they are created. Also, discover about how the cages that keep the balls in spot are secured with rivets.

Double-row, angular-speak to bearing

Double-row, angular-speak to ball bearings are equivalent in their contact surfaces in one direction, and the two pairs of bearings are set up axially reverse to one one more. This style allows them to assist blended loads in axial and radial instructions. These varieties of bearings are utilised for large-precision, higher-pace applications. They can be used in every little thing from turbines to dentistry products. Double-row, angular-get in touch with bearings are accessible at Grainger, as are one-row versions.
Double-row, angular-speak to ball bearings are a well-liked option for programs where substantial precision and large speed are essential. The layout functions of these bearings are ideal for purposes with axial area limitations. In distinction, they are smaller sized than two one-row angular-make contact with bearings and are offered in steel, polyamide, or brass cages. Whether or not you need to have a cage for high velocity or challenging working problems is up to you. If you are uncertain about the correct cage for your software, get in touch with Schaeffler.
One-row angular-make contact with ball bearings are the most typical kind of bearings. Double-row bearings are also accessible with a shielded outer ring, which safeguards the balls inside the bearing from external contaminants. Simply because these double-row bearings are a good selection for apps requiring large functionality, they are often the most reasonably priced option. They provide comparable efficiency as one-row bearings but are considerably much more rigid.
Preloading is a important overall performance characteristic for double-row angular-get in touch with ball bearings. Preloading can decrease the service daily life of double-row angular-speak to ball bearings by up to 380 percent. Alternatively, you can preload double-row angular-contact ball bearings by putting spacers amongst their outer rings. Good double-row angular-make contact with bearing installation will increase functioning precision and bearing existence.
bearing

Four-position contact ball bearing

The 4 Point Make contact with Ball Bearing Marketplace can be segmented into 3 kinds: 35 Degree, forty five Degree, and Other. The 35 Degree section is envisioned to witness the swiftest growth over the up coming couple of a long time, owing to its elevated operational pace and competence in axial and radial axis load managing. Other types of 4-position get in touch with ball bearings incorporate the Miniature and Deep Groove types. These are extensively used in cars, aerospace, and other industries.
These bearings are created for oil-totally free screw compressors, and they characteristic an outer-ring guided brass cage to minimize friction and boost managing accuracy. In addition, they have decrease upkeep expenses in comparison to conventional bearings. However, they have a increased indicate roughness benefit than their counterparts. Large-speed functions require substantial-pace bearings that can withstand rapidly pace adjustments. This is simply because of the higher friction charge, which outcomes from four-position speak to.
The 4-Stage Get in touch with Ball Bearing is a extremely versatile product, as it can deal with radial, thrust, and moment masses. Simply because of this, it is usually the initial selection for slow to reasonable-velocity programs. This design and style also has a simplified assembly method, requiring only a solitary double-50 %-change to put in. It is the initial choice of numerous automotive OEMs simply because it is very productive. If you want a ball bearing with these rewards, you should contact a local bearing organization.
The 4-Stage Speak to Ball Bearing Industry will proceed to develop despite a hard economy and risky trade situations. Demand from customers for automotive and aerospace factors is expected to increase alongside a assortment of technological advancements. In the meantime, demand from customers for power-efficient products will keep on to increase with changes in trade coverage, an imbalance in the offer-side ecosystem, and geopolitical threat. And even though all these variables will keep on to travel the industry growth, a number of problems are really worth taking into consideration.
The 4-Stage Get in touch with Bearing is created with the very same fundamental composition as its two-position counterpart. In a four-point get in touch with ball bearing, a single ball can have 4 unique factors of make contact with with two rings. Two of these make contact with factors may be in diagonal position. The two remaining contact factors alter place and accommodate radial hundreds. For that reason, the Four-Stage Get in touch with Bearing is more versatile and sturdy than its two-level counterparts.
bearing

Self-aligning ball bearing

The self-aligning ball bearing is an incredibly useful instrument in a lot of industries. This type of bearing has a sealing lip that helps make get in touch with with a clean chamfer on the interior ring. Because of the self-aligning mother nature of these bearings, they are not susceptible to misalignment. They can face up to temperatures ranging from -30°C to 120°C and should not be heated prior to installation.
A self-aligning ball bearing is an elastomer-primarily based spherical-shaped bearing with two rows of rolling components. These bearings can accommodate big radial loads, and their outer ring raceway is curved to give a spherical result. The inner ring, or cage, can be both cylindrical or conical. The internal diameter of a self-aligning ball bearing is normally cylindrical, but some are conical. They normally have 3 oil holes.
When deciding on a self-aligning ball bearing, search for a design with a big enough bearing diameter to accommodate the shaft’s bending. Self-aligning bearings may also be interchangeable with standard ball bearing assemblies. You can uncover specific values in maker catalogues. These bearings are useful in restricted purposes, despite the fact that they are not automatically ideal for everything. For case in point, in purposes exactly where combined masses are the major problem, self-aligning ball bearings must only be used if the software demands small misalignment.
A self-aligning ball bearing is a extremely-successful, strength-productive solution for a range of purposes. It is a simple, reduced-servicing remedy that can make your life less complicated. Its special outer raceway enables restraining springs to take up the deflection that is typical in other bearings. The end result is a cooler, smoother running vehicle. It also helps stop misalignment, which makes it best for use in numerous programs.
The SKF self-aligning ball bearing is an superb choice for applications involving hefty deflection of the shaft. They are the lowest-friction bearing accessible. Their metal plate bolstered seals stop them from separating from the shaft during procedure. They are also resistant to oil, creating them the perfect solution for higher-pace purposes. In addition to this, they are developed to function in a extensive assortment of temperatures.
bearing

Ceramic hybrid ball bearing

A hybrid ball bearing created from a mix of steel and ceramics is a good option for high-pace programs demanding electrical isolation. This mixture delivers an extended lifespan and minimum electrical corrosion or seizure chance. In addition, the hybrid ball bearings have much less friction than metal bearings and can run at minimal speeds. To discover much more about this hybrid kind of bearing, continue studying. We will also examine how it can help your software.
Total ceramic balls are generally more challenging than steel, but they do have reduce density, which means they’re not subject matter to the same large centrifugal forces as steel balls. These positive aspects make ceramic ball bearings significantly a lot more sturdy, with long lifespans. The two entire and hybrid ceramic ball bearings are offered from CZPT. Go through on to learn more about each and every variety. Here’s a look at some of the advantages of every single. You may be pleasantly surprised.
A hybrid ball bearing is made up of steel internal and outer rings and a ceramic ball. It can stand up to large speeds and masses, but it is also created to work in intense temperatures. This hybrid ball bearing also needs minimum lubrication and is suited for a selection of purposes. Because of its exclusive attributes, hybrid bearings are lightweight and challenging, and they spin quicker than steel balls. But how do you decide on the correct a single for your application?
A ceramic ball bearing is far better than a metal 1 for many purposes. Its higher speed capability and lower friction let it to run at increased speeds than steel balls. It is also considerably less sensitive to fluctuations in lubrication conditions than metal balls. They also are likely to be cheaper, so it can make feeling to invest in 1. It truly is really worth your while. They last longer, and they never demand a run-in time period.
A hybrid ball bearing is the greatest choice for electric powered spindles with large speed and hefty loads. A hybrid ceramic ball bearing has the edge of low heat and high stiffness, and can run at substantial speeds and hundreds. This thesis explores the dynamic characteristics of a hybrid ceramic ball bearing, including investigation calculations and experiment verification. The final results supply reputable knowledge and lay the foundation for expert spindle the best possible layout exams. It is a worthy addition to any equipment store.

China Good quality Single Row Ball Swing Bearing (1199DBS103y) Turntable Bearing with Internal Gear Teeth Slewing Ring Bearing Slew Ring Bearing     with Great qualityChina Good quality Single Row Ball Swing Bearing (1199DBS103y) Turntable Bearing with Internal Gear Teeth Slewing Ring Bearing Slew Ring Bearing     with Great quality

China Best Sales Four Point Contact Ball Turntable Bearing (2IE. 035.00 2IE. 074.00) Sirca External Gear Swing Bearing with Great quality

Merchandise Description

Remember to see information for  slewing ring bearing, 
SIRCA single row ball slewing ring bearing with external equipment
2IE.031.00
2IE.031.ten
2IE.035.00
2IE.040.00
2IE.043.00
2IE.050.00
2IE.064.00
2IE.074.00

If you require much more information, remember to feel totally free to contact us for designing and generating, Attn: Susan Yang

1. Why choose CZPT slewing bearings
Who we are?
We (HangZhou CZPT unique weighty-duty and massive bearing producing CO., LTD) are a professional
bearing company in the world, established in 2000, specializing in slewing bearings, slewing drives
and unique bearings, with layout, production, product sales, advertising and marketing and provider from OD200mm to 8000mm.
For 18 years encounters, our bearings have flied to a lot more than 50 nations around the world.

Our complex team:
We have sixty workers, with 6 experienced engineers and professional technicists.
All our bearings are designed by CAD-programs, produced in accordance to customers’ unique calls for.
Our complex team can also confirm security & reliability based on the load case and the strength of raceway
as nicely as gear and bolt connections.

Manufacturing:
Equipped with innovative production equipments and test instruments, all bearings are of uniform marking
and packing with outstanding high quality, reasonable rates and perfect providers.

High quality:
We have been certificated by ISO9001:2008, and we are also aligned to intercontinental high quality specifications
from software consulting and engineering to productions, exams, documentations and dispatch.
We will put together additional check studies if clients want.

two. Construction of CZPT slewing bearings
Primary Sorts:
Solitary row ball slewing ring bearings
Double row ball slewing ring bearings
Crossed roller slewing ring bearing
A few row cylindrical roller slewing bearings
BALL & ROLLER combined slewing bearings
Flanged slewing ring bearing
Gear Kind:
Slewing bearings with external equipment
Slewing bearings with inner equipment
Slew bearings without having gear
Flange sort:
Slewing bearings with external flange and internal equipment
Slew rings with inside flange and external equipment
Slew bearings with external and inside flange

3. About CZPT bearings Positive aspects:
3.1 introduction:we are a manufacturer of slewing bearing because 1993, our manufacturing unit occupies a area of 30000square meters with 4 workshop and 1 office developing. 
3.2 Showcased products: slewing bearing and slewing travel
three.3 Money: Current is 1 million RMB, but we are increasing the capital to ten million RMB
3.4 Workers: 60
three.5 Certificate: ISO9001:2008, 3.1 certificate, CCS certification
All CZPT slew rings can betested by the third social gathering inspection group if buyer requires, such as BV, CCS, SGS, LR, Abdominal muscles and so on. All swing bearings inspection reviews will be equipped to customers, which includes uncooked material certificate, warmth therapy certificate, UT&PT and so on.
3.6 Once-a-year Exportation: 8 million USD
three.7 Warranty Period: All CZPT slewing ring bearings have a warranty time period of eighteen months, for some special working situation, warranty period of time can be lengthened to 3-4 several years.
three.8 Generation Time: All CZPT slewing ring bearings can be typically shipped timely, normal creation time is 15-fifty times dependent on distinct slew bearings diameters, occasionally slew rings will be in inventory.
three.9 Complex Management
All CZPT slewing ring bearings are cast rings with content metal 50Mn or 42CrMo, slewing rings are machined by CNC lathe, slew bearings raceway are quenched via medium-frequency hardening with hardness 55-60HRC, turntable bearings are drilled holes by CNC drilling equipment, slew gears are machined by hobbing device with gear quenched if required, swing bearings then are grinded by grinding device with higher precision.

four. CZPT Slewing Bearing Packing 
four.1 Basic Packing
Bearing surface is coated with the anti-rust oil 1st and then wrapped with the plastic movie
And then packed with kraft paper and skilled belts
At previous, with wood box entirely at the outer packing to invoid the rust or the moist
We can count on the customers  demand to be packed

four.2 CZPT slewing ring bearings can be packed by distinct methods.
If bearing diameter is much less than 2300mm, slewing rings will be usually packed by square plywood situation.
If bearing diameter is more than 2300mm, slewing rings can be packed by sq. plywood scenario, spherical plywood situation, or steel tripod. Every package deal way can be entirely stored items securely.

5. CZPT Slewing Bearing Transportation:
Slewing bearings can be supplied distinct delivery conditions, these kinds of as EXW, FOB, CIF, DDU and so on.
Also, slewing rings can be transported by diverse transportation approaches, by convey (this sort of as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.
 

 

 

Types of Ball Bearings

In their most fundamental sort, Ball Bearings have 1 common feature – they are produced of steel. The vast majority of these bearings are produced of 52100 steel, which has one per cent chromium and one p.c carbon. The steel can be hardened by heat trea
tment. 440C stainless steel is utilised for rusting troubles. A cage about the ball balls is traditionally produced from thin metal. However, some bearings use molded plastic cages to preserve income and friction.
bearing

Single-row patterns

Metal linear translation levels often use single-row patterns for ball bearings. These varieties of bearings give sleek linear journey and can stand up to large loads. The content metal has a large modulus of elasticity and a large stiffness, as well as a reduce thermal enlargement than aluminum. For these motives, steel is the materials of decision for a ball bearing in a common consumer setting. One-row patterns for ball bearings are also suited for applications in humid or corrosive environments.
Single-row styles for ball bearings are obtainable in a assortment of sizes and are axially adjustable. They have a large radial potential, but require fairly little place. One-row deep groove ball bearings with snap rings are STN 02 4605 or R47, respectively. Bearings with snap rings are recognized by a suffix this kind of as NR. They may not have seals or shields mounted.
These solitary-row angular make contact with ball bearings are able of supporting axial and radial masses. In a two-raceway arrangement, the radial load on bearing A causes a radial load to act on bearing B. Equally axial and radial forces are transmitted in between single-row angular speak to ball bearings, and the resulting interior power need to be taken into account to determine equal dynamic bearing loads P.
Single-row deep groove ball bearings are the most typical type of ball bearings. These bearings are developed with only a single row of rolling aspects. The single-row design is straightforward and durable, which can make it best for higher-speed apps. Solitary-row designs for ball bearings are also offered in various bore measurements. They can also arrive in a range of styles and are non-separable. If you require a substantial-velocity bearing, you could want to decide for a double-row style.
In addition to solitary-row types for ball bearings, you can choose ceramic or metal ball bearings. Ceramic balls are significantly more challenging than steel balls, but they are not as tough as steel. Hence, ceramic bearings are stiffer than steel ball bearings, resulting in improved stress on the outer race groove and reduced load capability. This is a great gain for individuals who require the bearings to be light-weight and powerful.
The variation in between solitary-row and double-row styles is in the way that the interior and outer ring are set up. A single-row style places the internal ring in an eccentric position relative to the outer ring. The two rings are in speak to at a single stage, which leads to a huge gap in the bearing. The balls are then inserted through the gap. As a consequence, the balls are evenly dispersed through the bearing, which forces the inner and outer rings to grow to be concentric.
Deep-groove ball bearings are one particular of the most popular types of ball bearings. They are obtainable in distinct styles, such as snap-ring, seal and shield preparations. The race diameter of a deep-groove ball bearing is near to the ball’s diameter. These kinds of bearings are suited for heavy loads, and their axial and radial assistance are outstanding. Their main disadvantage is that the make contact with angle cannot be altered to accommodate a broad selection of relative masses.
bearing

Ceramic hybrid ball bearings

Hybrid ball bearings with ceramic balls have numerous benefits. They attribute enhanced kinematic conduct and need considerably less lubrication. For that reason, they can reduce functioning expenses. In addition, their reduced thermal enlargement coefficient allows for smaller sized adjustments in make contact with angle and preload versions, and they can retain tolerances. In addition, ceramic hybrid ball bearings have significantly increased daily life spans when compared to conventional steel-metal ball bearings, with up to 10 moments the lifespan.
Though ceramic bearings can be utilised in automotive programs, numerous individuals believe that they’re a inadequate decision for bicycle hubs. They do not reduce fat and only operate properly in higher-rpm environments. As a outcome, a lot of cyclists never even hassle with ceramic-dependent bearings. Nevertheless, equally Paul Lew and Alan are of the viewpoint that ceramic bearings are best suited for industrial or health-related products applications. In addition, Paul and Alan imagine that they are perfect for large-altitude drone motors.
An additional edge of ceramic hybrid ball bearings is that they use significantly less friction than typical steel-dependent balls. They are also more durable, demanding considerably less lubrication than metal-primarily based bearings. Additionally, the lower friction and rolling resistance linked with ceramic-primarily based ball bearings means that they can very last ten instances for a longer time than steel-based mostly bearings. A ceramic-based hybrid ball bearing can be used for applications in which pace and lubrication are vital.
Ceramic hybrid ball bearings attribute each steel and silicon nitride balls. Silicon nitride balls have 50% a lot more modulus of elasticity than steel balls and can increase precision and precision. Ceramic balls also have a smoother floor complete than metal balls, which minimizes vibration and spindle deflection. These benefits end result in improved pace and improved manufacturing top quality. In addition to this, ceramic balls can also lessen the functioning temperature, enhancing the perform environment.
Hybrid bearings are a common substitute to metal bearings. They have some rewards above standard metal bearings, and are getting to be a popular choice for engineered programs. Hybrid bearings are excellent for large pace machines. The content employed to manufacture ceramic balls is a large-top quality alloy, and is comparatively inexpensive. But you need to recognize that lubrication is even now required for hybrid bearings. If you are not careful, you could stop up losing cash.
These ball bearings can be employed in numerous industries and programs, and they are widely compatible with most metals. The major benefit of hybrid ball bearings is that they are very sturdy. Whilst steel balls have a tendency to corrode and use out, ceramic ball bearings can withstand these conditions whilst reducing routine maintenance and alternative expenses. The rewards of hybrid ball bearings are clear. So, consider switching to these newer kinds of ball bearings.
bearing

Self-aligning ball bearings

Self-aligning ball bearings are a excellent option for several purposes. They are a fantastic option to classic ball bearings, and they are perfect for rotating programs in which the shaft have to shift in a number of directions. They are also perfect for use in rotating areas exactly where a restricted tolerance is necessary. You can choose among two varieties: simple and flex shaft. Go through on to locate out which one will go well with your demands.
Self-aligning ball bearings are developed with a higher axial load carrying ability than solitary-row radial deep groove ball bearings. The volume of axial load carrying capacity is dependent upon the force angle. These bearings have a hollow raceway in the outer ring that makes it possible for the interior ring to pivot without having friction. They are usually used for high-velocity programs. Since of their design and style, they are very precise.
Self-aligning ball bearings are radial bearings that feature two rows of balls in a spherical outer ring. They also attribute two deep uninterrupted raceway grooves in the inner ring. Their special features make them an exceptional selection for purposes the place shaft deflection is a considerable element. Even with their tiny measurement, they have a high amount of precision and can withstand weighty loads.
Self-aligning ball bearings can compensate for misalignment in shaft programs. The inner ring and ball assembly are positioned inside of an outer ring that contains a curved raceway. This spherical design enables the balls and cage to deflect and re-align about the bearing centre. These bearings are also perfect for programs where shaft deflection is substantial, these kinds of as in straightforward woodworking equipment.
An additional kind of self-aligning ball bearing employs a frequent concave outer race. Both balls and outer races routinely compensate for angular misalignment brought on by machining, assembly, and deflections. In contrast to spherical rollers, they have decrease frictional losses than their spherical counterparts. Self-alignment ball bearings also have reduced vibration stages when compared to other kinds of bearings.
Self-aligning ball bearings run in misaligned programs simply because their spherical outer raceway can accommodate misalignment. This design and style allows them to operate in programs the place shaft deflection or housing deformation is frequent. They are therefore much more suited for minimal to medium-sized masses. The only real disadvantage to self-aligning ball bearings is their value. If you need to have to obtain a self-aligning ball bearing for your next project, you can assume to pay close to $1500.

China Best Sales Four Point Contact Ball Turntable Bearing (2IE. 035.00 2IE. 074.00) Sirca External Gear Swing Bearing     with Great qualityChina Best Sales Four Point Contact Ball Turntable Bearing (2IE. 035.00 2IE. 074.00) Sirca External Gear Swing Bearing     with Great quality