CSK15PP One Way Clutch Bearing
The CSK series bearings are Precision One Way Freewheel Overrunning Clutches with an internal keyway. They are pre-lubricated with grease, making them ready for use upon delivery. Freewheel bearings are distinguished by their ability to turn in one direction only, allowing them to transmit torque without any backlash. They come filled with grease and require low maintenance. Torque is transmitted from the inner and outer race to the housing via an external keyway and onto the shaft through an internal keyway.
Operating temperature range: minus 40 deg F to plus 212 deg F or minus 40 deg C to plus 100 deg C.
Benefits: Cost effective replacement clutch bearing, low maintenance, Internally keyed.
FEATURE
Condition: New – High Quality
Type: One-Way Clutch Bearing
Model: CSK15PP
Brand: Geaebear ®
Material: Chrome Steel
Sealed: Sealed Both Sides
Inside Diameter: 15 mm
Outside Diameter: 35 mm
Thickness: 11 mm
Inner Keyway: 5 × 1.4 mm
Outer Keyway: 2 × 0.7 mm
ORated Torque Capacity: 13.5 Nm
Weight: 0.045 kg
Package includes: One Bearing
Applications / Industries
The CSK series bearings find applications across a wide range of industries, including Agricultural Machinery, Industrial Washing Machines, Clay Pigeon (Trap) Throwers, Conveying Equipment, Electric Motors, CNC Machinery, Trucks, Mining Equipment, Trains, Robotics, Dental Equipment, Elevators, Rolling Mills, Ship Rudder Shafts, and Aggregate Crushers, among others.
Free Shipping and Fast Delivery - GearBear ®
Free Shipping on ALL Australia Standard Orders
We offer free shipping on all orders within Australia. There is no minimum order requirement!
Select our Standard Shipping (Australia Post Standard Parcel + Registered) option for orders within Australia to receive free shipping. Delivery typically takes 2-7 business days.
Please note that if the above transportation channels are unavailable or impacted by factors beyond our control, we will switch to alternative shipping methods without prior notice.
Please note that we ship from Monday to Friday.
1. Our warehouse is located in Sydney West, NSW.
We will ship your items from our warehouse located in Sydney West, NSW. However, please be aware that in certain situations, we may need to ship your items from other states without prior notice.
2. Items are generally dispatched within 1 business day after payment has been cleared. Please contact us if you have not received the item within 14 business days.
30-Day Returns and Exchanges Policy - Gearbear ®
How To Return Or Exchange
We maintain high-quality control standards to ensure that all the products we ship are in perfect condition. However, a return or exchange request may be necessary. If, for some reason, you are not 100% satisfied with your purchase, we will gladly assist you with a return.
We suggest that you inspect your package upon arrival. In the rare case that there is a damaged item, a missing item, or an incorrect item in the package, please contact us immediately so that we can correct any problems.
Return / Exchange Guidelines:
To make the return/exchange service as easy as possible, please follow the guidelines below:
1. Please contact us before submitting an eBay return request or case.
2. Returned items will need to be in their original condition as delivered and cannot be accepted if they have been fitted or modified.
3. Please return the products through your local post office and include your filled-out return/exchange authorization form in the return package.
4. Once we receive the returned package, we will issue a refund within 7 business days.
Still have questions or concerns?
Please contact us via eBay Message.
We're happy to answer questions or help you with returns.
During working hours, we usually reply within 1 hour.
If you have a problem that needs to be tracked or verified, such as querying the delivery process of an item, not receiving the item, or receiving the item incorrectly in terms of size etc., we will need some time to verify the issue. We usually reply within 24 hours in such situations.
Please allow us some time to deal with the issue. Please do not worry, we will solve any problems for you. Please believe in us.
We would like to communicate with you in a friendly manner and solve the issues for you during a pleasant chat. Nothing means more to us than providing you with the customer service you truly deserve.
Bearing Material Grade - GearBear ®
The bearing industry uses different materials for the production of the various bearing components.
The materials are processed to achieve desirable properties to maximize bearing performance and life.
The materials described here are the most commonly used.
Extra Clean 52100 Chrome Steel Bearings
The raw steel used to produce high precision miniature bearings is processed with additional melting steps. The result is a type of steel with very uniform fine grain material structure, the bearing contact surfaces can be super finished very smooth so the bearing is very quiet. The most common heat treating method for chrome steel is to thru harden the steel in a controlled atmosphere furnace. Bearings manufactured from chrome steel can operate at continuous temperatures up to 120°C. Where higher temperatures are encountered, it is possible to Heat Stabilize the bearing components. By varying the heat treating process, bearings can be produced so they are capable of operating at temperatures of 220°C, and higher. For these applications, the components must be subjected to a tempering treatment at a higher temperature corresponding to the service temperature. This elevated tempering treatment has a detrimental effect on the hardness of the material and the load carrying capacity of the bearing is reduced. SAE 52100 is an excellent general purpose bearing steel. Due to its excellent hardness and wear resistance, it exhibits good fatigue life in rolling element bearings. However, the corrosion resistance of chrome steel is poor because of the low chromium content. The surfaces of the bearings must be protected with a coating of rust inhibitor or oil to stop oxidation.
Bearings Made Of Stainless Steels
Stainless steel materials are used to make bearing components because it is more resistant to surface corrosion due to the higher content of chromium (~18%) with the addition of nickel. The chromium reacts with oxygen to form a layer of chromium oxide on the surface, creating a passive film.
Martensitic Stainless Steel Bearings- AISI 440C
The carbon content in 400 series stainless steels is high enough so it can be hardened using standard heat-treating methods up to Rc58. Due to the lower hardness, the load carrying capacity is 20% lower in bearings made from this material, than they are with 52100 chrome steel bearings. The level of carbon content means the components are magnetic. The corrosion resistance is “good”, when 440C material is exposed to fresh water and mild chemicals. This material is primarily used by US bearing manufacturers.
Miniature bearings made from conventional 440C stainless steel will be slightly noisy because the large carbides that normally concentrate at the grain boundaries are exposed in the raceway finishing process. Larger bore bearings are not as affected by this condition. Bearings made from 400 series stainless steel can operate at higher temperatures than chrome steel, up to 250°C continuous. Bearings made from this material are generally more expensive than chrome steel bearings.
Martensitic Stainless Steel Bearings– ACD34 / KS440 / X65Cr13
Many miniature bearing manufacturers make their rings and balls with a stainless steel material with slightly lower carbon and chromium content than AISI 440C known under several names including ACD34, KS440, and X65Cr13. After heat treatment, this material has smaller carbides so the bearing will have superior low noise characteristics while offering the same corrosion resistance as 440C. For bearings produced from this material, some manufacturers will publish the same load ratings as those for chrome steel. This is due to the use of tightly controlled heat treating methods that result in hardness up to Rc 60. Although this is one of the most widely used stainless steels for ball bearings, there is no AISI designation for this material.
Martensitic Stainless Steel Bearings– SV30
Martensitic stainless steel can be modified during the processing of the raw steel by lowering the carbon content and introducing nitrogen as an alloying element. The nitrogen increases the saturation of the chromium which transforms into chromium nitrides, instead of chromium carbides. The result is a high strength, high hardness steel with asuperiormicrostructure that extends fatigue life byas much 100%(double) in certain applications. This material also offers enhanced corrosion resistance, even better than 440C and ACD34 –up to 5 times better. Bearings manufactured from this material can carry a price premium of 20 - 40% but often can be more than offset by the gains in superior performance. More information is available in theSV30 Technical Information Sheet.
Heat Treatment Of Bearing Steels
When bearing steels are in their soft (unhardened) state, metallurgists refer to their structure as being in the pearlite state. In order to harden the steel it must be heated to a very high temperature and then cooled very rapidly. When heated in the heat treat furnace to 1,750°F, the structure transforms from pearlite to what is known as austenite. After quenching (very rapid cooling), the structure then transforms from austenite to martensite. Once transformed to martensite, the steel becomes very hard. However, at this point it is not considered "thermally stabilized". This is because not all of the austenite transforms into martensite during the quenching process. This phenomenon is called "retained "austenite".
If the steel is not thermally stabilized, the retained austenite will over an extended period of time (possibly years) transform into martensite. This transformation is accompanied by an increase in volume that is called metallurgical growth (not to be confused with thermal growth). Metallurgical Growth will cause a change in dimension and form of any steel parts such as bearings' even at room temperature.
While not a problem with low precision commodity type bearings, in high precision (ABEC 5P, 7P, 9P) miniature bearings this lack of dimensional stability can cause problems. In order to eliminate this unwanted metallurgical growth, the steel must be subjected to thermal stabilization. This is accomplished by repeated cycles of chilling at -120 F and tempering to transform a large percentage of the retained austenite to martensite.
AISI316 Austenitic Stainless Steel Bearings
Bearing components made from 300 series stainless steel materials have greater corrosion resistance and are non-magnetic because of the low carbon content. However, the tradeoff is that this material cannot be hardened so the bearings can only operate under low loads and speeds. The surfaces of the bearing undergo a chemical reaction with the oxygen called a passivation process; the passive film developed on the surface protects the bearing from corrosion. The corrosion resistance is best when the bearing is not completely submerged in liquid (such as underwater applications). Bearings made from this material are usually special order items requiring minimum quantities; in addition they are more expensive.
Other 300 Series Stainless Steel Bearings
The bearing shields, seal washers and ball retainers are sometimes made from AISI303 or AISI304 stainless steel because they have moderate corrosion resistance and are better for forming into the various shapes.
Bearings Made Of Carbon Alloy Steel
Carbon steel materials are used to produce various components of bearings and have two basic types, Medium versus Low Carbon Alloy Steel.
Medium Carbon Alloy Steel Bearings
Bearings made from medium or low carbon alloy steel material are typically called “semi-precision” or “commercial grade” bearings. The typical materials are AISI8620 or AISI4320. The inner and outer rings are surface hardened in a heat-treating process call case hardening or carburizing. Bearings made from these materials cannot carry high loads or operate at high speeds and they do not have corrosion resistance. The bearings made from these materials are usually low cost.
Low Carbon Alloy Steel Bearings
Low carbon steel is used in the production of bearing cages, metal shields and metal washers around which rubber is molded for seals. Common materials are AISI C1008 and C1010. The material needs to be protected from corrosion with a coating of oil/grease (cages) or by plating (shields). Additional information on Retainers and Closures can be found in the respective technical bulletins.
Bearings Made Of Plastics And Non-Metallic Materials
Cages
Plastic materials are sometimes used forbearing cages. The most common is molded nylon plastic but molded acetal (POM) is also used. Other polymers are used in special bearing designs where specific performance requirements such as high speed, or low torque or low noise are identified.
Cages made from phenolic (phenol-formaldehyde) materials are most common in high speed ball bearings used in machine tool equipment spindles. The phenolic cages are lightweight and have high strength. The cost of processing this material has led to an increase use of plastics in its place. Additional information is contained in the Cages technical bulletin.
Seals
The most commonsealmaterial is nitrile rubber or Buna rubber. It has good mechanical properties, can be used across a wide temperature range, is resistant to many chemicals and is low in cost. Materials such as Viton and Silicone are expensive elastomers and they’re usually used when an application requires their unique properties.
Bearings Made Of Ceramic Materials
Bearings made with ceramic materials fall into a specialty niche in the bearing industry. The most common arrangement is a hybrid bearing, usually with stainless steel rings and ceramic balls. The most common ceramic material used is silicon nitride. Balls made from this material are hard, up to Rc78, and have a very smooth surface. Hybrid bearings are more expensive than all stainless steel bearings.
Why Buy Gearbear ® Bearings?
GearBear Bearings: Reliable and Durable, Excellent Performance
Since 2015, GearBear Bearings have sold over 800,000 bearings in Australia and have been tested in the harshest conditions. Our bearings are evaluated by top engineers, fishermen, machinists, cyclists, and hobbyists, proving to have outstanding reliability and performance.
GearBear Bearings are made with high-quality materials and advanced manufacturing processes to withstand high loads and extreme temperatures. Our bearings also undergo rigorous quality control to ensure they meet the highest standards.
GearBear Bearings are widely used in various industries and applications, including remote control cars, fishing gear, machinery, bicycles, and hobbyist projects. Whatever your bearing needs, GearBear Bearings can provide the reliability and performance you require.
Advantages of GearBear Bearings:
Reliable and Durable: Made with high-quality materials and advanced manufacturing processes to withstand high loads and extreme temperatures.
Excellent Performance: Low friction coefficient and high load-carrying capacity ensure smooth operation and extended lifespan of your equipment.
Cost-Effective: Offers excellent quality at a reasonable price, providing value for money.
Wide Applications: Widely used in various industries and applications, including remote control cars, fishing gear, machinery, bicycles, and hobbyist projects.
Choose GearBear Bearings with confidence, knowing that your equipment will perform reliably even in the most demanding conditions.
Frequently Asked Questions - GearBear ®
We're always glad to any questions you may have. If you need a quick answer, you can click on the shop's contact seller. Here are answers to the questions we're asked most often.
When I search I get a lot of results which do not look like the products I searched for?
Different manufacturers use lots of different names for their products. e.g. search for 6204 returns a bearing 3204, in the equivalents listing for this bearing is the 6204 search term listed as VBF 3056204, because this part number contains "6204" the search result for this is also returned. At the top of each search result page are a set of filters that can be used to fine-tune the search results.
Can you give me some guidelines when measuring bearings?
The biggest and most common mistake when taking bearing measurements is to measure metric bearings in inches and likewise inch sized bearings in mm, no amount of searching will produce results for this scenario. Some simple guidelines are:
Generally, metric bearings will have full mm dimensions. Thus 20mm bore x 47mm outside diameter x 14mm width = 6204 series metric bearing.
Imperial bearings measured in metric will not have full mm sizes. Thus 12.7mm bore x 28.57mm x 7.87mm is in reality 1/2 inch x 1-1/8 inch x 5/16 inch = KLNJ1/2 series imperial bearing.
Is there a method of measuring the clearance in a bearing after fitting and what should it be?
Feeler gauges need to be used in the bearing to determine what clearance remains between the bearing outer and the rolling elements. This will be stated generally in the manual for the equipment and not by the bearing manufacturers.
My bearing has 2 rubber seals but the number depicts only one, how do I get the correct number of seals?
Bearing manufacturers generally stamp the bearing number on the bearing and not on the seals, historically numbers on the seals refer to the bearing number and the seal on that side of the bearing only hence the reference of single 6205RS refers to one seal on that side only, for 2 seals 2RS would be the number but its rarely stamped on the seals. The same applies to metal shielded bearings, Z is a single shield reference for one side of the bearing becomes ZZ for 2 seals (Z becomes 2Z in some manufactures numbering schemes).
What are C2, C3, C4 and C5 bearings?
C3, C4 and C5 bearings are bearings that have an additional internal radial clearance to cope with high-speed environments where excess heat is generated. They are not suited to environments where critical alignment is required from the onset e.g. Where blades and cutters are set up to each other. Applications like motorcycle wheels or bicycle wheels do not require C3 rated bearings. Unless the bearing you are replacing specifically says C3 on it then you should not replace it with a C3 bearing, C3 Bearings are loose to the feel from new and often people complain at the quality of the bearing being poor and having more movement than the one they are replacing. C4 and C5 are even looser still than C3 clearance bearings. This is the characteristic of these higher than normal clearance bearings marked C3, C4 and C5. C2 marked bearings have less clearance internally than standard bearings and should only be used in applications that specify C2 clearance.
Can you explain double sealed bearings?
Some manufacturers put the bearing number on the seals, which is fine if you know that a bearing with 2 seals is referred to as 2RS or a ZZ or 2Z.
Customers often refer to these numbers and order a bearing with a number like xxxxRS which, when in the past, we have supplied as a single sealed unit. The customer then complains as they clearly required a 2 sealed bearing. To stop this problem we supply a double-sealed item. The customer can remove the surplus seal if it is not required. This can be done by applying light pressure at the edge of one of the seals with a blunt instrument. A large amount of pressure would need to be applied to a bearing to damage it.
LFS Sealed Bearings ~ What you need to know
We sell a lot of LFS bearings, in fact, a great deal more than we sell over the trade counter. It's the misconception that you are getting something better than a standard rubber sealed bearing. It's the opposite way round, LFS seals whilst offering lower friction than RS seals don't offer the same dust or water resistance.
The LFS seal is a none contact seal thus being a lower friction option, the RS is a contact seal and as such offers far better resistance to moisture and dust ingress or foreign matter than the LFS types. Consider your choice carefully, replace LFS with LFS but don't replace RS with LFS as it will undoubtedly lead to premature failure.
What temperature will oil seals work at?
Nitrile rubber oils seals, the most commonly found seals in engines, gearboxes and general industrial applications have a working temperature range of -22 deg C to +100 deg C (-22 deg Fahrenheit to 212 deg Fahrenheit)
Viton oil seals are available in a selection of sizes and can tolerate far higher extremes of temperature between -20 deg C to +200 deg C (-4 deg Fahrenheit to 400 deg Fahrenheit)
What inside diameter should my oil seal have?
The required inside diameter of an oil seal is the same as the shaft size it will be running on (the seal manufacturers make allowance for the seal to be the correct fit on a shaft).
If you can supply us with the shaft size, outside diameter and width you require we can locate the seal for you and send you a link to it.
If the seal is missing or damaged beyond measuring then simply measure the shaft diameter and the diameter of the bore in the housing into which it fits and as best you can the width of the seal, these will be your inside, outside and width dimensions.
What are the different characteristics between deep groove ball bearings?
The standards of internal clearance that bearings are manufactured to are quoted by a C then a number or for standard clearance bearings are denoted to be CN clearance which is never stated and places the bearing between C2 and C3 Clearance.
The is that as the number gets higher the internal clearance between all the moving parts gets larger to cope with hot and high-speed environments better than standard or C3 bearings (C3 having slightly more clearance than standard) bearings would.
In principle as a bearing gets hot with speed or its environment then the parts expand, whilst expanding the distances between all the moving parts gets smaller.
Standard bearings are what are known as CN clearance but this is never stated in the bearing number thus 6205CN would normally be stated as just 6205.
C2 is less than normal so the bearing is tighter (designed for slower-moving more precise applications that require little or no play in the bearings where the temperature remains fairly constant.
C3 is designed for hot running environments; engines etc. where the bearing temp could reach 100deg or more.
C4 more extreme temperature applications and higher speed environments.
C5 the highest clearance bearing available, are extremely loose to start and can knock until at operating speeds and temperature.
For these reasons the materials and designs vary to accommodate these characteristics.
What clearance is necessary between roller and crankshaft components?
As the diameter of the crankshaft increases the clearance will stay proportional to the diameter.
Do you supply automotive bearings?
The bearings we supply are suitable for most applications however we do not supply manufacturers specific bearings. E.g. if you have a bearing with a Renault part number on it then it’s not likely we can cross-reference it to anything standard. By the same token if you measure the bearing it will most likely be a standard bearing. Manufacturers do this and sell spares as OEM parts at a premium. (Original Equipment Manufacturer). Because there is such a phenomenal variety of bearings for cars we do not have access to cross-reference databases for these bearings. We do however sell wheel bearing kits for a very wide range of cars from stock.
Do you supply shoulder bearings?
If you meant "flanged bearings" then yes we do, they can be found [here] other than that we do not have a database that provides the necessary information, however, if you can provide the bearing number, I am sure we will be able to obtain the bearing required.
Do you supply gearbox oil seals?
Yes, we do, our oil seals are used in many types of gearbox, unfortunately, we do not have a database that provides this information, however, you can easily identify an oil seal from the shaft diameter it runs on, the outside diameter of the seal or the diameter of the housing it fits into and its's width.
As you can imagine there are thousands of makes and models of vehicles, fortunately, they all generally, with the exception of a few manufacturers, fit standard oil seals which can be identified by their sizes. If you can provide the dimensions of the seal, i.e. bore, diameter and width, I am sure I will be able to obtain the seal required.
Do you supply washing machine/drum bearing kits?
We do supply such bearings and seals, however, you will need to dismantle the machine first in order to obtain the bearing numbers and seals sizes.