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  • How a One Way Clutch Works in Automotive Transmissions

    How a One Way Clutch Works in Automotive Transmissions

    A One Way Clutch helps to ensure smooth gear shifting by preventing the upcoming gear from rotating faster than the one currently in use.  Torque flows from the clutch into the transmission, keeping it in freewheeling mode until the moment it shifts gears. At that point the clutch locks in place to allow the transfer to occur smoothly.Said another way, a one way clutch is a “torque gate” that allows torque to flow in one direction but not another. A typical example is the Koyo? series of sprag clutches. These units break down into several components. While you’ll find some variation among manufacturers, the typical one way clutch you encounter in the shop will have these parts:The inner and outer rings, which hold the various parts of the sprag clutch in place.The sprags, which join the inner and outer rings together when transferring torque.The cage, a heat-treated carbon steel plate that spreads the sprags across the unit to ensure that torque is spread evenly across the unit.The spring, which ensures the sprags engage both inner and outer rings evenly.The end bearing, which keeps the inner and outer rings centered throughout the process.The drag clip, which holds the cage against the outer ring. This synchronizes the cage and outer ring so that the sprags engage smoothly.Diagnosing One Way Clutch ProblemsWhen these clutches fist begin to fail, a common sign is a clicking sound from the transmission. If left alone, this will progress to complete loss of forward speeds. Here’s a real life example of how sprag clutch problems affect daily driving:A 1984 Chevy half-ton truck with a four speed automatic transmission develops problems while traveling at highway speeds. The engine revs very high, but the vehicle slows down when the driver tries to accelerate. After coming to a complete stop, the vehicle will once again start off, but it continues to experience the same issues.Examination by a transmission tech reveals that the sprag clutch is worn. It will no longer lock down, thus torque is not transferred into the upcoming gears. Replacement of the defective unit solves the problem and the vehicle’s owner goes on his way.To sum up: one way clutches perform a valuable role in automatic transmissions.  When they fail, the results can be severe.  But, with proper troubleshooting and service, these problems can be resolved.
    05-02 2018
  • Application of One Way Bearing

    Application of One Way Bearing

    A one way clutch, also known as a “sprag clutch,” is a type of freewheeling clutch that helps transmissions to transfer torque and shift smoothly between speeds. When this component starts to go bad, problems can range from annoying clicking sounds to complete transmission failure.A one way clutch can be identified by its resemblance to a roller bearing, but instead uses stationary sprag bearings shaped like the number “8.” The clutch rotates easily in one direction, but binds the moment direction is reversed. Built-in springs soften the clutch’s reaction to the change, keeping the driver from feeling a backlash.These devices are used extensively in applications that we come across every day. For example, have you ever passed through a turn gate at a train stain or concert venue that locks up if you try to go backwards? If so, then you have felt a one way clutch at work. They are also used in motorcycles, helicopters, and hand tools like screwdrivers. Like CSK one way bearing also can be used in roller washing machine, conveyor, target-shooting machine, textile machine, printing press, scooter, electrombile, electronic toyes, reducer and so on. 
    04-26 2018
  • How to Clean One Way Bearing Clutch?

    How to Clean One Way Bearing Clutch?

    When one way bearings are inspected, the appearance of the bearings should first be recorded and the amount and condition of the residual lubricant should be checked. After the lubricant has been sampled for examination, the bearings should be cleaned. In general, light oil or kerosene may be used as a cleaning solution.Dismounted bearings should first be given a preliminary cleaning followed by a finishing rinse. Each bath should be provided with a metal net to support one way bearings in the oil without touching the sides or bottom of the tank. If one way bearings are rotated with foreign matter in them during preliminary cleaning, the raceways may be damaged. The lubricant and other deposits should be removed in the oil bath during the initial rough cleaning with a brush or other means.After the bearing is relatively clean, it is given the finishing rinse. The finishing rinse should be done carefully with the bearing being rotated while immersed in the rinsing oil. It is necessary to always keep the rinsing oil clean.
    04-18 2018
  • One Way Bearing Lubrication How to Do

    One Way Bearing Lubrication How to Do

    During operation process, how to handle exaggeration and the direction of the repair and maintenance of the lubrication is an important link of cannot be ignored.Bearing One Way Bearing Oil SoftOil bath total direction is the most gentle, soft low, mid to soft. Were immersed in the local correlation, oil soft groove tourism and related parts, and then restart the flow of oil and YouCao dough was slightly lower than the minimum should be the centre of the roll. A drop of oil soft, provide the necessary soft oil drops of oil composition quantitatively, guide the eight every 3 seconds, a drop of oil quantity is too much, hope to the bearing temperature increased.The soft oil circulation directionCorrelation with the pump oil is BaoSong until parts, through the correlation of oil cooling after soft filter. Because I can't put the hot oil circulation method, cooling and direction at a faster speed component relevance in practice.Bearing the spray of softBoring air shrinkage and soft oil oil after radiation fog, chaotic flow direction, can effectively avoid impurities and cooling in the direction of the invasion. For many components, low soft direction at a high speed.Radiation soft bearingOil pump pressure is low, and the other end of the shooting direction guiding significance, drain holes into YouCao inflows. In tourism, aircraft maintenance guidance for rolling, and the proportion of the high speed rotating airflow, the surrounding is very difficult, in oil soft, soft direction when a necessary radiation with the well-known low oil soft position, shall guide nozzle aircraft maintenance between inner ring and the central.
    04-11 2018
  • What is Sprag Clutch?

    What is Sprag Clutch?

    A sprag clutch is a one-way freewheel clutch.It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags are used. When the unit rotates in one direction the rollers slip or free-wheel, but when a torque is applied in the opposite direction, the rollers tilt slightly, producing a wedging action and binding because of friction. The sprags are spring-loaded so that they lock with very little backlash.ApplicationHelicoptersA sprag clutch is used in many helicopter designs to transfer power from the engine to the main rotor. In the event of an engine failure, the sprag clutch allows the main rotor to continue rotating faster than the engines so that the helicopter can enter autorotation.Motorcycle applicationsA sprag clutch is used in the electric starter motors of modern motorcycle engines to replace the Bendix gear common to automobile starters. Many modern sport and racing bikes use sprag clutches in the primary drive between the engine and transmission. This prevents the rear wheel from losing traction during rapid downshifts when the engine speed is not matched to road speed. If a sprag clutch is not present, much greater care is required when downshifting, because losing rear wheel traction can cause dangerous highside accidents.ConveyorsOn conveyor drives, a sprag clutch is used for indexing and anti-runback.OverrunningOverrunning occurs when two or more motors can be used to drive the same machine, including through the same shaft. A typical setup is as follows. The service drive, or prime mover, provides a combination of high speed and high power for normal operation. The secondary drive, or pony drive, can be run at low speed and low power, usually to position the conveyor for maintenance.The overrunning clutch allows the secondary drive to remain stationary during normal high speed operation of the conveyor drive.IndexingAn indexing motion provides for accuracy in the drive system. A link is installed between the prime mover and one race of the sprag clutch. The reciprocating motion of the prime mover is converted to an indexing movement on the other race of the sprag clutch.BackstoppingBackstopping prevents a loaded inclined conveyor from running back when the drive system is stopped. The outer race of the sprag clutch is fixed to the machine frame, usually via a torque arm. The inner race rotates freely in the forward direction of the conveyor drive. When the machine tries to run backward, the sprag clutch prevents this motion. In this application the sprag clutch is often called a "backstop" or "holdback".
    04-09 2018
  • One Way Bearing of Washing Machine

    One Way Bearing of Washing Machine

    One Way Bearing of washing machine has been damaged for many times. Customers have to care about the service life of one way bearing. The quality of bearing is directly related to the normal operation of the washing machine. The quality of the washing machine needs to be improved, and the bearing market will be better.At present, the development of bearing market has maintained a very good condition. For each enterprise, it is an important opportunity to develop. However, many enterprises has realized that it is the key to solve  the quality of one way bearing. How to identify whether bearing model conform to the requirements of the equipments is also important. In modern society, with the requirements of household products increasing, bearing products are widely used. The problem of one way bearing highly exposure, we need to pay attention to the improvement of the performance of the product.One way bearing of washing machine need to be able to withstand the high load operation. Comparing with washing machines, the operation environment of one way bearing is relatively simple. For high quality bearing products, it is very important to break the bearing development. Choosing WOK bearing, we will give you the best solution.
    03-06 2018
  • How to Prevent One Way Bearing Rust and Corrosion?

    How to Prevent One Way Bearing Rust and Corrosion?

    1.    Try to use solvent-free paint.2.    If it is possible, you can use an impregnated varnish without oxide such as epoxy-urethane or epoxy impregnated paint.3.    Before using melamine alkyd varnish, you should adjust the curing temperature and curing time. The curing temperature higher than 130 degree centigrade and curing time is more than 180min. Process must be strictly implemented, especially in high temperature and wet season. 4.    Using paint with no volatile acid.5.    Choosing paint that is resistant to hydrolysis.6.    Choosing mineral oil grease as far as possible.7.    In order to avoid water vapor and dust in the air into the one way bearing to cause noise and corrosion, grease container should be sealed. 8.    Choosing plastic film package with micro-hole to make the motor breathable before using. One way bearing was sealed with plastic film, the paint will remain in the bearing clutch and the moisture will be exposed. This situation should be avoided.9.     The grease may deteriorate under the influence of the high temperature when the motor cover spray power or paint is cured.10.  In order to solve the problem of corrosion, it is possible to discuss with motor manufacturers, bearing manufacturers and paint manufacturers to find out the best way.
    02-28 2018
  • Different Between Overrunning Clutch and One Way Bearing

    Different Between Overrunning Clutch and One Way Bearing

    Overrunning clutch is different from the one way bearing. Of course, some aspects still are similar or not similar in some aspects of one way bearing. What is overrunning clutch? Overrunning clutch is a basic and derived  component with the development of the electromechanical integration products. Its performance is a little similar to one way bearing, which is used for power transmission and separation of function between prime mover and working machine or driving shaft and auxiliary of internal machine. Overrunning clutch is mainly used to change the speed between the active part and the moving part or the rotation direction, so it has the automatic clutch function. Overrunning clutch is like a one way clutch which is divided into some types, and it is mainly divided into sprag type freewheel, ball bearing and ratchet overrunning clutch. There different series of overrunning clutch are also have many characteristics and advantages. 
    02-24 2018
  • 2017 Annual Meeting of Changzhou DingHao Precision Machine Co.,Ltd

    2017 Annual Meeting of Changzhou DingHao Precision Machine Co.,Ltd

    Time flies, a year has passed, and a new year is coming. Back in 2017, under the leader of the leaders of the company and the solidarity and collaboration of all the staffs, each department work actively to finish every task. 2017 was a year what is meaningful and fruitful. The development of the enterprise relies on the solidarity and cooperation of all employees and the courage to shoulder the responsibility. The rise and fall of enterprise are closely related to employees. In 2018, we will go ahead and make great achievements of one way bearing clutch and backstop. 
    02-07 2018

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