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Miniature ​Timken® miniature bearings, available in both inch and metric sizes, meet virtually all precision requirements including radial retainer, pivot, thrust, high-speed radial, angular contact and full ball complement Miniature A wide variety of bearing types and design variations are available to meet the requirements of virtually all precision instrument applications. Bearing types include radial retainer, pivot, thrust, high speed radial, angular contact and full ball complement. Many selections also are available in both inch and metric dimensions. Design Attributes Extended inner rings and flanged outer rings to facilitate mounting.Shields and seals for contamination protection.Radial play and contact angle variations to suit application loading and deflection requirementsVarious ball retainer styles and materials for optimum bearing performance.Factory lubrication from a stock of several hundred lubricants.Tolerance levels to exact application requirements.Ring and ball selection choices include AISI 440C stainless steel, SAE 52100 chrome steel, beryllium copper and ceramics.Performance testing for noise and friction torque specifications available. Applications Medical and industrial handpiecesFlow metersFuel controlsGyros, synchros and servosMotorsCryogenic coolersPulmonary assist devices Deep Groove Timken deep groove ball bearings deliver reliable performance in a wide range of applications and conditions, featuring super-finished raceways and controlled internal geometries to ensure quiet operation.  Deep Groove Extended Product Offering Our portfolio includes metric standard, miniature and thinsection deep groove ball bearings that span 3 mm to 150 mm bore sizes. They can be supplied with various sealing options and internal clearances. Regional Availability Readily available with the support of distribution and shipping centers in close proximity to your region. Interchangability Timken deep groove ball bearings follow ISO standards and are dimensionally interchangeable with competitor products. Quiet Running Our deep groove bearings deliver best-in-class noise and vibration performance for a wide variety of applications. High-Speed Capabilities Combination of surface finish and tight tolerances permits increased operating speeds under proper lubrication conditions. Robust Seals Timken offers single- and double-shielded, sealed, and combinations of those with an outer diameter snap ring. Seals are tested to withstand high-debris conditions and retain grease fill. Premium Lubricants Most Timken sealed and shielded deep groove ball bearings come standard with high-performance grease to reduce torque and bearing noise, including Mobil Polyrex™ EM and Chevron SRI™. Both lubricants have a wide operating temperature range from -29°C to 177°C. Total Quality As with all Timken products, you can be sure our deep groove ball bearings meet our rigorous worldwide quality standards Angular Contact Timken® Angular Contact Ball Bearings are designed to handle both radial and axial loading, and are specifically engineered for use in high-speed and high precision applications.  Angular Contact Timken® angular contact ball bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance. Double-row Conrad bearings can accommodate thrust in both directions. Size Range Single-row: 10 mm – 150 mm (0.3937 in. – 5.9055 in.) boreDouble-row: 12 mm – 150 mm (0.4724 in. – 5.9055 in.) bore Design Attributes Specific geometry of angular contact bearing raceways and shoulders creates ball contact angles that support higher axial loads.Expanded options include special lubricants, cage materials, preloads and coatings for additional corrosion resistance. Applications Angular contact ball bearings are engineered for use in high-speed, high precision applications for: AgricultureChemicalGeneral industryUtilities Precision High-speed applications for ultra-precision equipment require tight tolerances and super-fine surface finishes. Timken precision ball bearings, which deliver higher yields and lower costs, are the perfect choice.  Precision Precision ball bearings are used for high precision applications in a variety of markets, including aerospace,  health, machine tool, robotics and general industry. MM/MMV (Machine Tool Bearings) Super precision bearings manufactured to MM/MMV tolerances combine the accuracy and performance of ABEC 9/ISO P2 with the non-critical features of ABEC 7/ISO P4 levels for cost effectiveness. MMX (Machine Tool Bearings) Type MMX super precision bearings are made to ABEC 9/ISO P2 levels and have closer tolerances and running accuracies than ABEC 7/ISO P4 tolerances. Ideal for ultra-high speed grinding spindles designed for tight dimensional tolerances and super-fine surface finishes. HX (Machine Tool Bearings) Type HX delivers excellent running accuracy and are manufactured to precise ABEC9 (ISO P2) levels for runout tolerances. Ceramic Ball Bearings Ceramic hybrid angular contact ball bearings combine steel rings with ceramic rolling elements to deliver higher spindle speeds and increased dynamic radial stiffness. Ball Screw Support Bearings Ball screw support bearings are available in single- and double-row configurations and are widely used in motion control applications. Miniature & Instrument Bearings Miniature and instrument bearings are used in medical and industrial handpieces and other precision applications. Ball bearing designs include radial, angular contact, thrust and pivot. Thin Section Bearings Thin section bearings are available in radial, angular contact and fractured race designs and are used in precision applications such as gimbals, rotary joints and robotics Cylindrical roller Bearings Minimize drag. Reduce heat. And perform better, for longer, with less maintenance and downtime. These are the true tests of any bearing. Our comprehensive line of single-, double- and multi-row Timken cylindrical roller bearings helps extend equipment life and lower maintenance costs. Single Row Timken® single-row EMA series cylindrical roller bearings incorporate a unique cage design, proprietary internal geometry and special surface textures, available in a wide variety of size ranges and configurations.  NU (RIU, RU) These bearings carry radial load only and can accommodate both expansion and contraction. The relative axial displacement of one ring to the other occurs with minimum friction while the bearing is rotating. Type RIU and RU bearings may be used in one or two positions for shaft support if other means of axial location are provided. The outer ring has two integral ribs while the inner ring has a cylindrical outer diameter without ribs. Size range: 80 mm to 2000 mm OD Design Attributes Design has a cylindrical inner ring and two ribs on the outer ring, making type NU bearings well suited for use as floating bearings.Separable components simplify mounting and removal.Accommodates axial expansion and contraction.Provides axial displacement between rings with minimum friction while rotating.Supports heavy radial loads.Not suitable for applications with thrust loads. Applications Cement and coal pulverizersPumpsCompressorsPlanetary gearsGear boxesCentrifugesMining equipmentAggregate processingTransmissions  N (RIN, RN) These bearings carry radial load only and can accommodate both expansion and contraction. The relative axial displacement of one ring to the other occurs with minimum friction while the bearing is rotating. Type N bearings may be used in one or two positions for shaft support if other means of axial location are provided. The outer ring has a cylindrical bore without ribs and the inner ring incorporates two ribs. Size range: 80 mm to 2000 mm OD Design Attributes Design has a cylindrical outer ring and two ribs on the inner ring, making type N bearings well suited for use as floating bearings.Separable components simplify mounting and removal.Accommodates axial expansion and contraction.Provides axial displacement between rings with minimum friction while rotating.Supports heavy radial loads.Not suitable for applications with thrust loads. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilnsPower generation equipment such as pulverizers, gearboxes and gear drivesOilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives  NJ (RIJ, RJ) Cylindrical bearing type NJ has double-ribbed outer and single-ribbed inner rings and can support heavy radial loads, as well as light unidirectional thrust loads up to 10 percent of the radial load. The thrust load is transmitted between the diagonally opposed rib faces in a sliding rather than a rolling motion. Size range: 80 mm to 2000 mm OD Design Attributes Design features outer ring with two integral ribs and an inner ring with a single rib.Supports heavy radial and light unidirectional thrust load up to 10 percent of radial load.Angle ring can be used to turn a floating bearing into a fixed one. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilnsPower generation equipment such as pulverizers and gearboxes and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives NF (RIF, RF) Cylindrical bearing type NF has single-ribbed outer and double-ribbed inner rings and can support heavy radial loads, as well as light unidirectional thrust loads up to 10 percent of the radial load. The thrust load is transmitted between the diagonally opposed rib faces in a sliding rather than a rolling motion. Size range: 80 mm to 2000 mm OD Design Attributes Design features outer ring with one integral rib and an inner ring with two ribs.Supports heavy radial and light unidirectional thrust load up to 10 percent of radial load.Angle ring can be used to turn a floating bearing into a fixed one. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilnsPower generation equipment such as pulverizers, gearboxes, and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives NP (RIT, RT) Cylindrical bearing type NP has a double-ribbed inner ring and a single-ribbed outer ring with an abutting loose rib, which allows the bearing to provide axial location and to carry light thrust loads in both directions. Factors governing radial and thrust load capacities are the same for Types NJ. Size range: 80 mm to 2000 mm OD Design Attributes Design features an inner ring with two integral ribs and an outer ring with a single rib.Features an abutting loose rib.Carries light thrust loads in both directions.Provides axial location.May be used with RN or RU bearing to accommodate axial expansion/contraction. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilnsPower generation equipment such as pulverizers and gearboxes and gear drivesOilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives  NUP (RIP, RP) Cylindrical bearing type NUP has a double ribbed outer ring and a single-ribbed inner ring with an abutting loose rib, which allows the bearing to provide axial location and to carry light thrust loads in both directions. Factors governing radial and thrust load capacities are the same for type NJ. Size range: 80 mm to 2000 mm OD Design Attributes Design features an outer ring with two integral ribs and an inner ring with a single rib.Features an abutting loose rib.Carries light thrust loads in both directions.Provides axial location.May be used with RN or RU bearing to accommodate axial expansion/contraction. Applications Cement making equipment such as crushers; vertical, ball and rolling mills; conveyor drives; gear reducers, spherical pillow blocks; trunnions and rotary kilnsPower generation equipment such as pulverizers, gearboxes and gear drives Oilfield equipment such as mud pumps, drawworks, swivels, block hooks, crown blocks, traveling blocks and top drives Double Row Timken® two-row, or double-row, cylindrical bearings offer added radial capacity and are interchangeable. Dimensions and diameters under the rollers (NNU style) and over the rollers (NN style) meet ISO standards Double Row Two-row, or double-row, cylindrical bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard. Interchangeability is designed for the ring without the rollers to allow interchange with competitor inner rings. Size range: 80 mm to 2000 mm OD Design Attributes Designed to ISO/DIN specified interchangeable dimensions where available.Sold as complete assembly.Available in same size range as single row product.Current designs use NN, NNU nomenclature.Standard cage design is a drilled pocket, finger-style bronze retainer. Applications Gear DrivesCrop ShearRolling MillsMachine Tools Multiple Row Timken® four-row cylindrical roller bearings withstand the rigors of daily use in applications where moderate and high speeds, high radial loads, elevated temperatures and extreme debris present constant challenges.  Multiple Row Four-row cylindrical bearings are almost exclusive to metals industry and carry heavy radial loads in steel, aluminum and other metal rolling mills. Size Range: 145 mm to 1040 mm Bore. Design Attributes Design offers very high radial load capacity. No thrust capacity.Straight and tapered bores available.Inner races are interchangeable with outer assemblies. Applications Back-up rollsWork rollsCement crushing Single Row Full Complement Full-complement (NCF) single-row Timken® bearings include integral flanges on the inner and outer rings. These bearings also can manage axial loads in one direction and permit small axial displacements.  Single Row Full Complement Size range: 100 mm bore to 2000 mm OD Design Attributes Designed to ISO/DIN specified interchangeable boundary dimensions where available.Sold as a completely unitized assembly.Both single row and double row products available in same size range.Standard designs use NCF, NNCF nomenclature.Full complement construction, no cage included.High capacity, but operating speed may be an issue requiring close application scrutiny.Assembly outer ring design provides significant internal axial float capability. Applications Gear DrivesCrop ShearsRolling MillsGeneral Industrial Double Row Full Complement ​Two-row or double row cylindrical roller bearings are used in gear drives, rolling mills, and machine tools. The bearings are designed for additional strength and are used when the application carries radial loads. Double Row Full Complement Timken now offers a broader range of full complement cylindrical roller bearings to meet the need for increased radial load carrying capacity by maximizing the number of rollers in a given envelope.  The expanded offering includes multiple series of one-row and two-row designs starting at 100 mm bore. Size range: 100 mm bore to 2000 mm OD Design Attributes Designed to ISO/DIN specified interchangeable boundary dimensions where available.Sold as a completely unitized assembly.Both single row and double row products available in same size range.Standard designs use NCF, NNCF nomenclature.Full complement construction, no cage included.High capacity, but operating speed may be an issue requiring close application scrutiny.Assembly outer ring design provides significant internal axial float capability. Applications Gear DrivesCrop ShearsRolling MillsGeneral Industrial
Double row cylindrical roller bearings Double row cylindrical roller bearings have a low cross section, high load carrying capacity and high stiffness. Therefore they are mainly used in machine tools, rolling mill stands, plastic calenders, grinding mills and also large gearboxes. SKF produces double row cylindrical roller bearings mainly in the NNU design (fig 1) and the NN design (fig 2). The bearings are separable, i.e. the ring with integral flanges together with the roller and cage assemblies can be mounted separately from the other bearing ring or all bearing components can be mounted separately. This facilitates the mounting, inspection and maintenance of these bearings.  fig 1  fig 2 Double row cylindrical roller bearings are produced with both cylindrical bore and tapered bore; bearings of the NN design are generally supplied with tapered bore. When mounting bearings with tapered bore it is possible to achieve a certain radial internal clearance or a given preload. The bearings, except those of the NNUP design (fig 3) allow axial displacements between shaft and housing to take place inside the bearing itself within certain limits. 
Double row full complement cylindrical roller bearings The basic SKF assortment of double row full complement cylindrical roller bearings provided here includes NNCL (fig. 1), NNCF (fig. 2) and NNC (fig. 3) open design bearings, as well as sealed NNF design bearings (fig. 4). All bearings are non-separable and have an annular groove and three lubrication holes in the outer ring to facilitate lubrication. NNF design bearings have three additional lubrication holes in the inner ring. Single row full complement cylindrical roller bearings The basic SKF assortment of single row full complement cylindrical roller bearings provided here includes NCF and NJG design bearings. They are used to locate the shaft axially in one direction and eventually to accommodate axial displacement of the shaft relative to the housing in the opposite direction. NCF design NCF design bearings have two integral flanges on the inner ring and one on the outer ring (fig. 1). A retaining ring inserted in the outer ring on the side opposite the integral flange holds the bearing together. The retaining ring should not be loaded axially during operation.  fig. 1 NJG design NJG design bearings, which comprise the heavy 23 dimension series, are intended for very heavily loaded, low-speed applications. These bearings have two integral flanges on the outer ring and one on the inner ring (fig. 2). NJG design bearings have a self-retaining roller complement. Therefore, the outer ring with the roller complement can be separated from the inner ring without having to take special precautions to prevent the rollers from falling out (fig. 3). This simplifies mounting and dismounting.  fig. 2  fig. 3 Matched bearings SKF can supply matched bearings. To match bearings, SKF combines bearings so that the difference in cross-section height lies within a very small tolerance range. This reduced tolerance range is a precondition for equal load sharing between the bearings. Matched bearings are identified by a designation suffix:DR for a set of two bearingsTR for a set of three bearingsQR for a set of four bearings Multi-row cylindrical roller bearings Four-row (fig 1) and six-row cylindrical roller bearings (fig 2) are used almost exclusively for the roll necks of rolling mill stands, calenders and roller presses. Their friction is low compared with other roller bearings. As they are normally mounted with an interference fit on the roll neck, they are particularly suitable for rolling mill applications where the rolling speed is high.  fig 1  fig 2 The low bearing cross section allows for relatively large roll neck diameters in comparison with the roll diameter. Since very many rollers can be incorporated, the radial load carrying capacity is exceptionally high. Multi-row cylindrical roller bearings are only able to accommodate radial loads. They are therefore mounted together with deep groove or angular contact ball bearings, or with tapered roller bearings, either radial or thrust designs, which take up the axial loads. The four-row and six-row cylindrical roller bearings are of separable design, i.e. the ring or rings with integral flanges and the roller and cage assemblies can be mounted independently of the free rings, or all bearing components can be mounted separately. This considerably simplifies bearing mounting, maintenance and inspection. A certain limited axial displacement of the shaft with respect to the housing can be accommodated within the bearing. SKF four-row cylindrical roller bearings have a cylindrical bore and some sizes are also available with tapered bore. Bearings with tapered bore can be adjusted during mounting to give a certain radial internal clearance or a defined preload.
What is the designation for a bronze cage on cylindrical roller bearings?  Usually a G1 suffix is used to indicate a bronze or brass cage in a cylindrical roller bearing. In rare applications an L1 type cage has been used as well. What is the designation for a tapered bore on spherical roller bearings?  A tapered bore on any NTN bearing (except tapered roller bearings) is a “K” (1 to 12 ratio) or “K30” (1 to 30 ratio) suffix.
What is preload?  Preload is an initial load or "negative clearance" given to a bearing before or during operation. This results in the rolling element and raceway surfaces being under constant elastic compressive forces at their contact points. This has the effect of making the bearing extremely rigid so that even when load is applied to the bearing, radial or axial shaft displacement is minimized. Is it safe to use a C3 fit in place of a standard fit?  C3 is not a fit, it is an internal clearance. Fit is how tight or loose the shaft and housing hold the bearing in place. In most electric motor rebuild applications a C3 clearance can be used in place of a normal clearance. Contact NTN engineering for other applications. What is the difference between ABEC-3 and C3?  Does the fit get better going up to C4 or down to C2? ABEC-3 is an ABMA tolerance class. C3 is an internal clearance specification. Fit is the relationship between the bearing bore and outside diameters to the housing bore and shaft outside diameter. Tolerance, clearance, and fit are independent dimensions, although in some cases choosing a larger internal clearance can allow you to use a tighter interference fit. Please contact NTN engineering for details.
Silver Thin Bearings Precision Thin Section Bearings are available through National Precision Bearing. SilverThin bearings are produced in the USA. Standard Bearings from 1-inch bore to 35-inch bore, with Specials upon request. Angular, radial and four-point contact types stocked. If your requirements call for Precision Thin Section Bearings or large diameter Thin Section Torque Tube bearings, think SilverThin bearings. National Precision Bearing dealer in Bangalore Delhi and Kolkata.
Thrust Bearings SPB-USA, LLC is the factory-direct sales and marketing headquarters in the United States for Sapporo Precision, Inc., the Japanese based manufacturer of EZO Precision Ball Bearings, located in Sarasota, FL. This new facility enables Sapporo to serve the needs of OEM customers, as well as industrial distributors throughout North and South America. Since 1969, Sapporo Precision, Inc. has been the recognized as a world leader in the manufacture of precision miniature and medium-sized bearings in inch and metric dimensions, as well as chrome steel and stainless steel. EZO bearings are most sought after for use in applications such as; medical devices, aerospace products, power tools, machine tools, auxiliary power supplies, blowers, actuators, gyros, generators, vacuum pumps, food processing, robotics, x-ray machines, dental drills, centerfuges, paristaltic pumps, slot cars, atvs, linear motion devices, yoyo bearings, go carts, fishing reels, snow mobiles, dental products, AC/DC motors, automotive, marine applications, rotary encoders and semi conductor manufacturing equipment. Our sizes range from a very small .06mm bore diameter to the larger size 90mm bore diameter with a variety of closures and lubrications that stand up to the most demanding applications. EZO SPB-USA, LLC bearing dealer in Kolkata, Chennai, Bangalore.
EZO bearings are most sought after for use in applications such as; medical devices, aerospace products, power tools, machine tools, auxiliary power supplies, blowers, actuators, gyros, generators, vacuum pumps, food processing, robotics, x-ray machines, dental drills, centrifuges, peristaltic pumps, slot cars, atvs, linear motion devices, yoyo bearings, go carts, fishing reels, snow mobiles, dental products, AC/DC motors, automotive, marine applications, rotary encoders and semi conductor manufacturing equipment. Our sizes range from a very small .06mm bore diameter to the larger size 90mm bore diameter with a variety of closures and lubrications that stand up to the most demanding applications. EZO bearings dealer in Kolkata, Chennai and Bangalore.
An arrangement for mounting a bearing to the surface of a machine part in which the bearing has an inner and an outer race ring. The race ring opposed to the machine part is formed with a conically tapered surface forming a corresponding space therebetween. A radially extending annular flange is provided along the edge of the conically formed ring and a wedge block is located within the space. The arrangement is provided with screw means by which the block is securely pressed and forced into engagement with both the conical surface and the surface of the machine part. 9 Claims, 2 Drawing Figures BACKGROUND OF INVENTION The present invention relates to an arrangement for fastening machine elements such as roller bearings and the like on rotating shafts, in journal housings and the like. In mounting bearings for supporting rotary shafts in pillow blocks, journal housings and the like it is necessary to insure that no relative motion exists between the bearing and the shaft or housing on which it is secured. Even the smallest of such relative motion between the engaging faces can, over a period of time, result in severe corrosion to the surfaces. Such corrosion damages the engaging faces and make the dismantling of the bearing difficult and the reuse of the machine part or bearing part impossible. It is therefore essential that the machine element or bearing be securely fastened to the shaft or the associated housing in order to prevent relative movement, wandering or creeping between the parts. It has been known to fasten bearing on shafts by using eccentric rings adapted to sit on the side of an inner race ring provided with its own eccentric ring face. By turning the eccentric ring with respect to the inner ring the bearing can be securely fastened. The seated, located on one side of the inner race ring, produces a contact between the shaft and inner race ring only at certain defined places. At the other places aboutthe circumference of the shaft a gap or space exists between it and the bearing part. It is in these free places that corrosion and rust first appear and are built up. As i a result the bearing parts and shaft freeze together, so that when the parts are dismantled the bearing is easily damaged and may not be reusable. It is also known to fasten machine parts to shafts using clamping blocks. Such blocks generally took the form of split sleeves having cylindrical bores, conical outer surfaces and stamped tongues. However, once the machine parts were placed in operation these parts, particularly the tongues tended to bend and deform. These blocks could only be used once and when the hearing was demounted a new one had to be used. It was also known to employ several embodiments of bracing sleeves which had a conical cut-out portion which was braced with the machine part by itself or with the use of additional conical wedge like bodies. The bracing sleeve was also provided with a slot which carried means for axially sliding the brace. These braces were retained against becoming loose by using a tightening nut and a retaining plate at the small end of the conical outer surface. This made the device relatively large in the axial direction, and in many cases could not be used because the lack of room and difficulty in assembling the device in place. It is the object of the present invention to provide for the fastening of machine parts such as bearings on shafts, housing and the like in which the disadvantages of the prior art are overcome. It is a further object of the present invention to provide a bearing capable of being fastened on a bearing shaft, which insures secure locking, prevents relative movement and wandering of the parts. It is a further object to provide a device of the type described which is simple, economical, and easy to 2 applyto either shaft or housing and requires manipulation from only one side. It is another object of the present invention to provide a device of the type described which is easily demounted and capable of indefinite reuse. It is another object of the present invention to provide a device of the type described which significantly prevents corrosion from occurring between the mating and engaging parts. These objects as well as others, together with the advantages of the present invention will be seen from the following disclosure. SUMMARY OF INVENTION According to the present invention an arrangement for mounting a bearing to the surface of a machine part is provided, in which the bearing has an inner and an outer race ring. The race ring opposed to the machine part is formed with a conically tapered surface forming a corresponding space therebetween. A radially extending annular flange is provided along the edge of the conically formed ring and a wedge block is located within the space. The arrangement is provided with screw means by which the block is securely pressed and forced into engagement with both the conical surface and the surface of the machine part. In accordance with the present invention, the arrangement may be used to fasten hearings to rotating shafts, or to the journal housing itself. In the first instance, the inner race ring is provided with the conical surface on its inner face and is provided with the radial flange at the end having the widest radial opening. In the second instance'the outer race ring is provided on its outer surface or shell with the conical surface and is provided with an annular flange extending radially outward at the edge having the smallest radius. In either case the flange is'provided with a plurality of axial holes in which fastening means such as set-screws are located and adapted-to bear on the axial enlarged end of the wedge block. By turning the set-screws the edge block can be pressed to form a completely tight lock between the bearing ring and the machine part. It is preferred that the wedge block be annular and provided with an axial slit, in the manner of a split ring. In this manner as the block is wedged and pressed into place it can contract or expand to engage substantially all of the corresponding mating surfaces in which it is in contact with. The surfaces of the wedge blocks conform to the contour of the surfaces of the races, the shaft and machine part to which it corresponds. In either case, the flange may be made as an integral part of the race ring or it may be separable. If it is separably made it may be preferred to provide the associated race ring with a groove in which it seats and to provide the flange also a split ring so that it has a degree of resiliency holding it normally in place. The flange may also be formed as part of a ring nut arranged axially at the end of the race. The following is a complete description of the invention with respect to its embodiment in a bearing adapted to be secured to a shaft. The embodiment whereby the bearing may be secured to a surrounding housing will be clearly obvious, although not shown in the drawings
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