Catalogo General Skf Pdf
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Optimized internal geometryThe internal geometry has been optimized for longer life, quieter running, improved seal attachment, low friction and increased ability to accommodate slight misalignments without reducing bearing life. SKF Explorer class bearingsHigh performance SKF Explorer deep groove ball bearings are printed in blue in the product tables. The higher performance of SKF Explorer deep groove ball bearings also includes quieter running. SKF Explorer bearings retain the designation of the earlier standard bearings. However, each bearing and its box are marked with the name SKF Explorer. Additional details on SKF Explorer performance class bearings can be found on page 23. Large product assortmentAvailable in a wide range (2. 5 to 800 mm inside bore diameter), the basic SKF design is available with a choice of shields, seals and snap rings. In addition, SKF produces max-type deep groove ball bearings with a filling slot. JEM bearingsFigure 1 Figure 2 In the USA, SKF offers bearings with C3 internal clearance, steel cages and quiet running characteristics packaged as JEM bearings.
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Quality performance in demanding applicationsCapable of meeting the severest demands in terms of operating speed, operating temperature, vibration, high running accuracy, low friction, and the ability to function in a contaminated environment with available seals and shields. Basic designDeep groove ball bearings, single rowSKF single row deep groove ball bearings have deep, uninterrupted raceways and a high degree of conformity between balls and raceways. This enables them to carry axial loads in both directions in addition to radial loads even at high speeds. Single row deep groove ball bearings are suitable for a wide variety of applications and are therefore produced in a large number of sizes and designs. Single row deep groove ball bearings of the basic design, i. e. open at both sides, (Figure 1) are produced by SKF in several series and in a very wide range of diameters. Those bearings of the basic design which are also produced as shielded or sealed bearings may, for manufacturing reasons, have recessed outer ring shoulders to take the shields or seals.
Cage designs: J M TC Y TN9Pressed steel cage, ball guided (not marked on bearings) Machined brass cage, rolling element guided Phenolic cage, inner ring guided Pressed brass cage, ball guided Cage of glass fiber reinforced polyamide 6. 6, ball guided 5.
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Catalogo general skf pdf manual
Clearance/tolerance: C1 C2 (C0)* C3 C4 C08 C78 C70 C782 C783Clearance < C2 Clearance < Normal Normal clearance Clearance > Normal Clearance > C3 ABEC5 running accuracy inner and outer Combination of C70 and C08 Reduced I. R. and O. diameter C78 and C2 clearance C78 and C3 clearance * Not marked on bearing or package. Note: C3 clearance, J-steel cages and quiet running characteristics available in JEM bearings. See page 27. W64 LT10 25 Deep groove ball bearings Product Details Technical features Boundary dimensions Tolerances In accordance with ISO 15-1998 Normal, ABEC 1 P6 (SKF Explorer) Up to 52 mm O. P5, ABEC 5 52 mm to 110 mm O. P6, ABEC 3 >110 mm O. Normal, ABEC 1 257 F (125 C) 2 minutes of arc Running accuracy Heat stabilization Misalignment Cage material Standard Optional Axial load max Steel Machined brass (M) 0. 5 x C0 for 6200, 6300 and 6400 series 0. 25 x C0 for 61800, 61900 and 6000 series 2RS1 Synthetic rubber (NBR) seals 2RS2 Synthetic rubber (FRM) seals 2Z Stamped steel Seals Shields Single row deep groove ball bearing (data tables on page 32) and ABEC 5 (data tables on page 46) Single row deep groove ball bearing Max type (data tables on page 47) 26 Introduction IntroductionDeep groove ball bearings are used in a particularly wide variety of applications.
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GJN grease provided as standard in JEM bearingsSKF provides GJN, a high temperature urea based grease, as the standard for all JEM deep groove ball bearings. GJN is accepted by major OEM electric motor manufactures in the U. S. and offers a wide range of operating temperature and is quiet running. Deep groove ball bearing single row Deep groove ball bearing with filling slots (Max type) 27 Deep groove ball bearingsIntroduction VariationsBearings with shieldsBearings with shields, designation suffix Z or 2Z, are produced in one of two designs, depending on the bearing series and size (Figure 3). The shields are made of sheet steel and normally have a cylindrical extension in the shield bore to form a long sealing gap with the inner ring shoulder. Shielded bearings are primarily intended for applications where the inner ring rotates. If the outer ring rotates, there is a risk that the grease will leak from the bearing at high speeds. Bearings with contact sealsBearings with contact seals, designation suffixes RSH, 2RSH or RS1, 2RS1 are manufactured in three designs depending on bearing series and size (Figure 5).
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They are relatively simple in design, non-separable, capable of operating at high and even very high speeds, and require little attention or maintenance in service provided the customer selects the appropriate bearing specifications for his application. These characteristics coupled with a price advantage make deep groove ball bearings the most popular of all rolling bearings. SKF produces deep groove ball bearings in a large number of designs and sizes. The most numerous are the single row bearings without filling slots (Conrad assembly). The bearings with filling slots described in the section starting on page 47 are used in special applications and consequently only a limited range is produced. ABEC 5 single row bearingsSKF produces single row deep groove ball bearings in a higher precision class (ABEC 5). These products are most frequently used in high-speed applications or where precision is critical as in cutting tools, electric motors, handheld tools, and spindles. ABEC 5 bearings are produced in the 6200 and 6300 series and are available in an open version only.
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They can be supplied with either a brass (Y) or phenolic (TC) cage. Product highlightsFast, quiet, robust bearingsIf the application is demanding and quiet running, smoothness, strength and low heat generation are mandatorySKF deep groove ball bearings fit the bill. Deep groove ball bearings with filling slots (Max type)Single row deep groove ball bearings with filling slots incorporate a greater number of balls than the corresponding size without filling slot, and have a filling slot in both outer and inner rings. The radial load carrying capacity is higher than that of bearings without filling slot, but their axial load carrying capacity is small. They are also unable to operate at the high speeds normally associated with deep groove ball bearings. SKF deep groove ball bearings with filling slots are available in various designs to meet market demands. The most common are described below (Figure 2) and are listed in the tables on page 47. Quiet runningHigh precision balls and specially designed raceway grinding equipment are used by SKF to produce some of the quietest running bearings available.
Bearings in the 60, 62 and 63 series up to 52 mm outside diameter are equipped with RSH seals to design (a). Other bearings have RS1 seals, which seal against the cylindrical surface of the inner ring shoulder (b) indicated by dimension d1 in the product table or against a recess in the inner ring side face (c) indicated by dimension d2 in the product table. The seals are inserted in recesses in the outer ring and provide good sealing at this position without deforming the outer ring. Standard seals are made of acrylonitrile butadiene rubber (NBR) with a sheet steel reinforcement. The permissible operating temperature range for these seals is -40 to 212 F (-40 to +100 C) and up to +250 F (+120 C) for brief periods. When sealed bearings are operated under extreme conditions, e. g.
2 years later the offices and production facilities were established