China factory Bolt Bearing for RV Speed Reducer/Industrial Robot ball bearing

Product Description

HangZhou Nanter Bearing Co., Ltd. specializes in the production and sales of needle roller bearings. There are 5,000 specifications and varieties of needle roller bearings ranging from inner diameter 3mm to outer diameter 350mm, including drawn cup needle roller bearings: HK, BK, SCE, SCH, B, BH, BHM, F, FY and other series, cage bearings: K, KZK and other series, one-way clutch needle roller bearings: HF, HFL, RC, RCB and other series, thrust needle roller bearings: NTA, TRA, TRB, TRC ,TRD, AXK, AS and other series, solid ring needle roller bearings: NA, RNA, NK, NKI, MR, Ml, NKS, NKIS and other series, inner and outer rings: IR, LR, Ml and other series , cylindrical roller bearings: N, NF, NU, NUP, NUPK, SL01, SL02, SL18, SL19, SL04 and other series, support rollers, bolt rollers: KR, STO, NUTR, NATR, NUKR, CF, CFH, CYR, etc. series, solid ring needle roller bearings: NK, NKI, RNA, NA, NKS, NKIS, MR, Ml metric and imperial series, combined radial-thrust bearings: NKIA, NKIB, NX, NKZ, NKXR series, water pump shaft Connected bearings: WR, WB series, and can design and develop various types of bearings suitable for users’ specific requirements according to users’ requirements.
Bearing products are widely used in automobiles, motorcycles, electric/pneumatic tools, light industrial machinery, engineering machinery, printing machinery, machine tool industry, packaging machinery and other fields.
The company always regards customer satisfaction as the driving force and unremitting pursuit, and all employees continue to fulfill their commitments to customers.
For more products and information, please visit the official website  

Supporting Roller Bearing

Model NATR, NATR—PP Supporting Roller Bering
Model NATV, NATV–PP Supporting Roller Bering
Model NATR supporting roller bearing includes outer ring, inner ring, needle cage assembly and baffle ring pressed and fixed in both sides of inner ring. Model NATR—PP support roller bearing has the seal ring. It has a large grease-storage space and can be used for a long time without adding lubricating grease.
The structure of Model NATV supporting roller bearing is same as that of Model NATR. Model NATV is the bearing with full of needles. It can withstand heavy load under the low speed. However it is necessary to add the lubricating grease at regular intervals. Model NATV—PP supporting roller needle bearing has the seal ring structure.
If the surface of outer ring is cylinder face, the letter X shall be added after designation of bearing.


Shaft Diameter Bearing Designation Boundary Dimensions Basic Load Rating Limiting Speed
without inner ring with inner ring d D B C d1 rs Dynamic Static As yoke type track rollers
Cw Cow
mm Without inner ring With inner ring mm min N rpm
16 NATR5 NATR 5 PP 5 16 12 11 12 0.15 3800 3750 3150 3300 •22000
NATV5 NATV 5 PP 5 16 12 11 12 0.15 6400 8500 4850 6500 8500
19 NATR6 NATR 6 PP 6 19 12 11 14 0.15 4250 4600 3500 3900 ,20000
NATV6 NATV6PP 6 19 12 11 14 0.15 7300 10800 5500 7900 7000
  NATR8 NATR 8 PP 8 24 15 14 19 0.3 6800 7700 5500 6400 •15000
  NATV8 NATV 8 PP 8 24 15 14 19 0.3 10400 15600 7800 11400 5500
30 NATR10 NATR 10 PP 10 30 15 14 23 0.6 8100 9700 6800 8400 11000
NATV10 NATV 10 PP 10 30 15 14 23 0.6 12200 19000 9500 14600 4500
32 NATR 12 NATR 12 PP 12 32 15 14 25 0.6 8700 11000 6900 8800 9000
NATV12 NATV 12 PP 12 32 15 14 25 0.6 13200 21700 9700 15400 3900
35 NATR 15 NATR 15 PP 15 35 19 18 27 0.6 12900 19000 9700 14100 7000
NATV15 NATV 15 PP 15 35 19 18 27 0.6 18300 35000 12800 23000 3400
  NATR 17 NATR 17 PP 17 40 21 20 32 1 14200 20400 10900 15500 6000
40 NATV17 NATV 17 PP 17 40 21 20 32 1 21000 39500 14800 26500 2900
  NATR 20 NATR 20 PP 20 47 25 24 37 1 19500 32000 15500 25500 4900
47 NATV20 NATV 20 PP 20 47 25 24 37 1 28000 59000 20600 42000 2600
52 NATR 25 NATR 25 PP 25 52 25 24 42 1 21200 38000 15400 26500 3600
NATV25 NATV 25 PP 25 52 25 24 42 1 31000 72000 20500 44000 2100
62 NATR 30 NATR 30 PP 30 62 29 28 51 1 34000 59000 23600 38500 2600
NATV30 NATV 30 PP 30 62 29 28 51 1 48500 108000 30500 63000 1700
  NATR 35 NATR 35 PP 35 72 29 28 58 1.1 37000 69000 25500 44500 2000
72 NATV35 NATV 35 PP 35 72 29 28 58 1.1 53000 127000 33000 73000 1400
  NATR 40 NATR 40 PP 40 80 32 30 66 1.1 49000 94000 33000 59000 1700
80 NATV40 NATV 40 PP 40 80 32 30 66 1.1 66000 159000 41000 90000 1300
85 NATR 45 NATR 45 PP 45 85 32 30 72 1.1 51000 157100 32500 59000 1500
90 NATR 50 NATR 50 PP 50 90 32 30 76 1.1 52000 108000 32000 59000 1300
NATV50 NATV 50 PP 50 90 32 30 76 1.1 72000 191000 40500 93000 1000

   Q1: Can I get a free sample?
A1: We provide samples free in freight collected. For special samples requirement, please contact us for more details. 
Q2: How could I pay?
A2: We prefer T/T or L/C at sight. If you prefer other payment terms, please contact us freely.
Q3: What is your brand and packing way? Can you produce my brand and packing?
A3: Our brand is SGC and our own packing materials. We can make your brand. For more details, please contact us.
Q4: What is the delivery lead time?
A4: It depends on the order quantities. The mass production lead time is about 45-60 days after receipt of the deposit. 
Q5: Are you manufacturer or  trading company?
A5: We are manufacturer and exporter. We provide all kinds of OEM services for clients around the world.
Q6: Where is your main market?
A6: We export to the North America, Mexico, Australia, South-east Asia, Europe, U.A.E., Turkey, and other countries.

Our Services
1. Professional QC and QA team to make sure all products qualified before shipping.
2. Competitive price.
3 .Standard package to ensure the safe transportation.
4. Professional service.

Why choose us?
1. Production
    Qualified production, competitive price, professional service. 
2. Quality
    All products are inspected 100% before shipment by relative testing equipments.
3.The 24/7 service allows you to obtain the best solution in the shortest possible time for the problems you encounter in the field of industry and bearings.
4.For the needs of the industrial field and bearing products, we have made a series of solutions, from product selection to correct installation after ordering, we will give you the most timely answers and solutions for every problem you encounter.


Cage: With Cage
Rows Number: Multiple
Load Direction: Radial Bearing
Style: Without Outer Ring, Without Inner Ring
Material: Stainless Steel
Type: Open
US$ 2/Piece
1 Piece(Min.Order)

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Customized Request


Types of Ball Bearings

In their most basic form, Ball Bearings have one common feature – they are made of steel. The majority of these bearings are made of 52100 steel, which has one percent chromium and one percent carbon. The steel can be hardened by heat trea
tment. 440C stainless steel is used for rusting problems. A cage around the ball balls is traditionally made from thin steel. However, some bearings use molded plastic cages to save money and friction.

Single-row designs

Steel linear translation stages often use single-row designs for ball bearings. These types of bearings provide smooth linear travel and can withstand high loads. The material steel has a high modulus of elasticity and a high stiffness, as well as a lower thermal expansion than aluminum. For these reasons, steel is the material of choice for a ball bearing in a typical user environment. Single-row designs for ball bearings are also suitable for applications in humid or corrosive environments.
Single-row designs for ball bearings are available in a variety of sizes and are axially adjustable. They have a high radial capacity, but require relatively little space. Single-row deep groove ball bearings with snap rings are STN 02 4605 or R47, respectively. Bearings with snap rings are identified by a suffix such as NR. They may not have seals or shields installed.
These single-row angular contact ball bearings are capable of supporting axial and radial loads. In a two-raceway arrangement, the radial load on bearing A causes a radial load to act on bearing B. Both axial and radial forces are transmitted between single-row angular contact ball bearings, and the resulting internal force must be taken into account to calculate equivalent dynamic bearing loads P.
Single-row deep groove ball bearings are the most common type of ball bearings. These bearings are designed with only one row of rolling elements. The single-row design is simple and durable, which makes it ideal for high-speed applications. Single-row designs for ball bearings are also available in various bore sizes. They can also come in a variety of shapes and are non-separable. If you need a high-speed bearing, you may want to opt for a double-row design.
In addition to single-row designs for ball bearings, you can choose ceramic or steel ball bearings. Ceramic balls are considerably harder than steel balls, but they are not as hard as steel. Hence, ceramic bearings are stiffer than steel ball bearings, resulting in increased stress on the outer race groove and lower load capacity. This is a great benefit for those who need the bearings to be lightweight and strong.
The difference between single-row and double-row designs is in the way that the inner and outer ring are installed. A single-row design places the inner ring in an eccentric position relative to the outer ring. The two rings are in contact at one point, which causes a large gap in the bearing. The balls are then inserted through the gap. As a result, the balls are evenly distributed throughout the bearing, which forces the inner and outer rings to become concentric.
Deep-groove ball bearings are one of the most popular types of ball bearings. They are available in different designs, including snap-ring, seal and shield arrangements. The race diameter of a deep-groove ball bearing is close to the ball’s diameter. These types of bearings are suited for heavy loads, and their axial and radial support are excellent. Their main drawback is that the contact angle cannot be adjusted to accommodate a wide range of relative loads.

Ceramic hybrid ball bearings

Hybrid ball bearings with ceramic balls have numerous advantages. They feature improved kinematic behavior and require less lubrication. Consequently, they can reduce operating costs. Additionally, their low thermal expansion coefficient allows for smaller changes in contact angle and preload variations, and they can retain tolerances. Furthermore, ceramic hybrid ball bearings have significantly increased life spans compared to conventional steel-steel ball bearings, with up to 10 times the lifespan.
Although ceramic bearings can be used in automotive applications, many people believe that they’re a poor choice for bicycle hubs. They don’t reduce weight and only work well in high-rpm environments. As a result, many cyclists don’t even bother with ceramic-based bearings. However, both Paul Lew and Alan are of the opinion that ceramic bearings are best suited for industrial or medical equipment applications. Furthermore, Paul and Alan believe that they are ideal for high-altitude drone motors.
Another advantage of ceramic hybrid ball bearings is that they use less friction than conventional steel-based balls. They are also more durable, requiring less lubrication than steel-based bearings. Furthermore, the lower friction and rolling resistance associated with ceramic-based ball bearings means that they can last ten times longer than steel-based bearings. A ceramic-based hybrid ball bearing can be used for applications where speed and lubrication are critical.
Ceramic hybrid ball bearings feature both steel and silicon nitride balls. Silicon nitride balls have 50% more modulus of elasticity than steel balls and can improve accuracy and precision. Ceramic balls also have a smoother surface finish than steel balls, which reduces vibration and spindle deflection. These benefits result in increased speed and improved production quality. In addition to this, ceramic balls can also reduce the operating temperature, enhancing the work environment.
Hybrid bearings are a popular alternative to steel bearings. They have some benefits over traditional steel bearings, and are becoming a popular choice for engineered applications. Hybrid bearings are ideal for high speed machines. The material used to manufacture ceramic balls is a high-quality alloy, and is comparatively inexpensive. But you must understand that lubrication is still necessary for hybrid bearings. If you are not careful, you may end up wasting money.
These ball bearings can be used in many industries and applications, and they are widely compatible with most metals. The main advantage of hybrid ball bearings is that they are very durable. While steel balls tend to corrode and wear out, ceramic ball bearings can withstand these conditions while minimizing maintenance and replacement costs. The benefits of hybrid ball bearings are clear. So, consider switching to these newer types of ball bearings.

Self-aligning ball bearings

Self-aligning ball bearings are a good choice for many applications. They are a great alternative to traditional ball bearings, and they are ideal for rotating applications in which the shaft must move in several directions. They are also ideal for use in rotating parts where a tight tolerance is necessary. You can choose between two types: plain and flex shaft. Read on to find out which one will suit your needs.
Self-aligning ball bearings are designed with a higher axial load carrying capacity than single-row radial deep groove ball bearings. The amount of axial load carrying capacity is dependent upon the pressure angle. These bearings have a hollow raceway in the outer ring that allows the inner ring to pivot without friction. They are often used for high-speed applications. Because of their design, they are highly accurate.
Self-aligning ball bearings are radial bearings that feature two rows of balls in a spherical outer ring. They also feature two deep uninterrupted raceway grooves in the inner ring. Their unique features make them an excellent choice for applications where shaft deflection is a significant factor. Despite their small size, they have a high level of precision and can withstand heavy loads.
Self-aligning ball bearings can compensate for misalignment in shaft applications. The inner ring and ball assembly are positioned inside an outer ring containing a curved raceway. This spherical design allows the balls and cage to deflect and re-align around the bearing center. These bearings are also ideal for applications where shaft deflection is significant, such as in simple woodworking machinery.
Another type of self-aligning ball bearing uses a common concave outer race. Both balls and outer races automatically compensate for angular misalignment caused by machining, assembly, and deflections. Compared to spherical rollers, they have lower frictional losses than their spherical counterparts. Self-alignment ball bearings also have lower vibration levels compared to other types of bearings.
Self-aligning ball bearings operate in misaligned applications because their spherical outer raceway can accommodate misalignment. This design allows them to work in applications where shaft deflection or housing deformation is common. They are therefore more suitable for low to medium-sized loads. The only real drawback to self-aligning ball bearings is their price. If you need to purchase a self-aligning ball bearing for your next project, you can expect to pay around $1500.

China factory Bolt Bearing for RV Speed Reducer/Industrial Robot   ball bearingChina factory Bolt Bearing for RV Speed Reducer/Industrial Robot   ball bearing
editor by CX 2023-04-21