Merchandise Description


China Brand CZPT thrust ball bearing 51212 thrust ball bearing 8212 created in China ball bearing 


Merchandise NameThrust Ball bearing 51212



Cage Materialsteel

d — Interior diameter 60                                                                                      

D — Outer diameter  95

B — Inner ring thickness  26

Cr (kN) — Rated load   70.sixty

Cor (kN) — Rated load  133.00

Restricted speed with grease ( r/min)1900

Constrained velocity with oil ( r/min)2800

Optional precisionP0,P6,P5

Internet weight (KG).663


First packing3pcs wraped in plastic movie and brown paper.

Optional packingIndividual box bundle

PaymentT/T, West Union, L/C etc.

Trade TermsFOB, CIF, EXW

Lead time for stocks7 times following receipt of payment 

Lead time for things that need to be producedaround 30 days 

OEM serviceavailable

Product record




Types of Ball Bearings

In their most fundamental type, Ball Bearings have one typical feature – they are made of metal. The vast majority of these bearings are manufactured of 52100 steel, which has one percent chromium and 1 per cent carbon. The steel can be hardened by heat trea
tment. 440C stainless steel is used for rusting troubles. A cage all around the ball balls is traditionally made from slim steel. Even so, some bearings use molded plastic cages to save cash and friction.

Solitary-row types

Metal linear translation phases typically use solitary-row designs for ball bearings. These sorts of bearings offer smooth linear journey and can withstand substantial masses. The content steel has a large modulus of elasticity and a large stiffness, as effectively as a reduced thermal expansion than aluminum. For these motives, metal is the materials of option for a ball bearing in a typical user atmosphere. One-row styles for ball bearings are also suited for programs in humid or corrosive environments.
Single-row designs for ball bearings are available in a selection of measurements and are axially adjustable. They have a large radial ability, but need comparatively little space. One-row deep groove ball bearings with snap rings are STN 02 4605 or R47, respectively. Bearings with snap rings are discovered by a suffix these kinds of as NR. They might not have seals or shields installed.
These single-row angular get in touch with 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. The two axial and radial forces are transmitted in between single-row angular get in touch with ball bearings, and the ensuing internal drive need to be taken into account to compute equivalent dynamic bearing hundreds P.
One-row deep groove ball bearings are the most widespread kind of ball bearings. These bearings are made with only one particular row of rolling aspects. The single-row style is easy and tough, which can make it excellent for higher-pace purposes. Solitary-row patterns for ball bearings are also accessible in different bore sizes. They can also occur in a selection of designs and are non-separable. If you need to have a substantial-speed bearing, you may possibly want to decide for a double-row design and style.
In addition to single-row types for ball bearings, you can decide on ceramic or metal ball bearings. Ceramic balls are substantially tougher than steel balls, but they are not as challenging as metal. Consequently, ceramic bearings are stiffer than metal ball bearings, resulting in improved stress on the outer race groove and decrease load potential. This is a excellent reward for those who require the bearings to be lightweight and robust.
The big difference between one-row and double-row designs is in the way that the internal and outer ring are put in. A one-row style spots the internal ring in an eccentric situation relative to the outer ring. The two rings are in get in touch with at one particular level, which leads to a massive hole in the bearing. The balls are then inserted via the gap. As a consequence, the balls are evenly dispersed all through the bearing, which forces the interior and outer rings to turn into concentric.
Deep-groove ball bearings are 1 of the most well-known kinds of ball bearings. They are accessible in distinct types, like snap-ring, seal and defend arrangements. The race diameter of a deep-groove ball bearing is shut to the ball’s diameter. These sorts of bearings are suited for heavy loads, and their axial and radial help are exceptional. Their major disadvantage is that the make contact with angle cannot be altered to accommodate a wide range of relative masses.

Ceramic hybrid ball bearings

Hybrid ball bearings with ceramic balls have many rewards. They characteristic improved kinematic habits and need much less lubrication. For that reason, they can reduce running fees. Additionally, their reduced thermal enlargement coefficient allows for smaller sized modifications in speak to angle and preload variations, and they can retain tolerances. Furthermore, ceramic hybrid ball bearings have substantially increased existence spans compared to standard steel-steel ball bearings, with up to 10 times the lifespan.
Although ceramic bearings can be utilized in automotive applications, numerous people believe that they’re a bad selection for bicycle hubs. They don’t lessen excess weight and only operate well in higher-rpm environments. As a outcome, many cyclists don’t even hassle with ceramic-dependent bearings. Even so, the two Paul Lew and Alan are of the opinion that ceramic bearings are ideal suited for industrial or health care gear purposes. Additionally, Paul and Alan believe that they are excellent for high-altitude drone motors.
An additional edge of ceramic hybrid ball bearings is that they use much less friction than conventional steel-based mostly balls. They are also much more resilient, demanding less lubrication than steel-primarily based bearings. Moreover, the reduced friction and rolling resistance associated with ceramic-based mostly ball bearings implies that they can previous ten times more time than steel-based mostly bearings. A ceramic-based hybrid ball bearing can be utilised for apps exactly where pace and lubrication are critical.
Ceramic hybrid ball bearings attribute each metal and silicon nitride balls. Silicon nitride balls have 50% a lot more modulus of elasticity than metal balls and can increase precision and precision. Ceramic balls also have a smoother surface complete than metal balls, which decreases vibration and spindle deflection. These benefits outcome in increased pace and improved production quality. In addition to this, ceramic balls can also minimize the operating temperature, enhancing the operate setting.
Hybrid bearings are a well-known alternative to steel bearings. They have some advantages above standard metal bearings, and are becoming a well-known selection for engineered programs. Hybrid bearings are ideal for higher pace machines. The substance used to manufacture ceramic balls is a large-good quality alloy, and is comparatively low-cost. But you need to comprehend that lubrication is nevertheless essential for hybrid bearings. If you are not careful, you might finish up squandering money.
These ball bearings can be used in a lot of industries and apps, and they are widely compatible with most metals. The principal benefit of hybrid ball bearings is that they are very durable. Even though steel balls have a tendency to corrode and use out, ceramic ball bearings can stand up to these conditions whilst minimizing servicing and replacement charges. The positive aspects of hybrid ball bearings are distinct. So, take into account switching to these more recent types of ball bearings.

Self-aligning ball bearings

Self-aligning ball bearings are a good selection for numerous purposes. They are a great alternative to classic ball bearings, and they are excellent for rotating purposes in which the shaft need to transfer in many instructions. They are also perfect for use in rotating elements where a limited tolerance is necessary. You can choose amongst two kinds: simple and flex shaft. Read through on to locate out which one particular will suit your requirements.
Self-aligning ball bearings are made with a increased axial load carrying potential than one-row radial deep groove ball bearings. The amount of axial load carrying ability is dependent on the pressure angle. These bearings have a hollow raceway in the outer ring that enables the inner ring to pivot with no friction. They are frequently used for large-velocity apps. Because of their layout, they are highly exact.
Self-aligning ball bearings are radial bearings that feature two rows of balls in a spherical outer ring. They also function two deep uninterrupted raceway grooves in the interior ring. Their unique characteristics make them an superb decision for programs where shaft deflection is a significant aspect. Regardless of their modest size, they have a high amount of precision and can endure weighty masses.
Self-aligning ball bearings can compensate for misalignment in shaft apps. The inner ring and ball assembly are positioned inside an outer ring made up of a curved raceway. This spherical design and style permits the balls and cage to deflect and re-align close to the bearing middle. These bearings are also ideal for apps where shaft deflection is significant, this sort of as in basic woodworking machinery.
Yet another sort of self-aligning ball bearing utilizes a frequent concave outer race. Both balls and outer races immediately compensate for angular misalignment brought on by machining, assembly, and deflections. In contrast to spherical rollers, they have reduced frictional losses than their spherical counterparts. Self-alignment ball bearings also have reduce vibration amounts compared to other kinds of bearings.
Self-aligning ball bearings operate in misaligned programs simply because their spherical outer raceway can accommodate misalignment. This layout enables them to operate in purposes exactly where shaft deflection or housing deformation is common. They are consequently a lot more suitable for lower to medium-sized hundreds. The only genuine disadvantage to self-aligning ball bearings is their price tag. If you need to have to acquire a self-aligning ball bearing for your following venture, you can anticipate to spend close to $1500.

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